Updating to 1.15

build.gradle

@@ -1,10 +1,6 @@
-// Fabric build script
-// 03/06/2019
-// https://github.com/FabricMC/fabric-example-mod/blob/master/build.gradle
-
 plugins {
     id 'java-library'
-    id 'fabric-loom' version '0.2.5-SNAPSHOT'
+    id 'fabric-loom' version '0.2.6-SNAPSHOT'
     id 'maven-publish'
 }
 
@@ -59,7 +55,9 @@ dependencies {
     modApi "com.minelittlepony:Kirin:${project.kirin_version}"
     include "com.minelittlepony:Kirin:${project.kirin_version}"
 
-    modImplementation "io.github.prospector.modmenu:ModMenu:1.6.2-93"
+    modCompileOnly("io.github.prospector:modmenu:${project.modmenu_version}") {
+        transitive = false
+    }
 }
 
 processResources {

gradle.properties

@@ -2,19 +2,20 @@ org.gradle.jvmargs=-Xmx3G
 org.gradle.daemon=false
 
 # Fabric Properties
-	# check these on https://fabricmc.net/use
-	minecraft_version=1.14.4
-	yarn_mappings=1.14.4+build.2
-	loader_version=0.4.8+
+  # check these on https://fabricmc.net/use
+  minecraft_version=1.15.2
+  yarn_mappings=1.15.2+build.7:v2
+  loader_version=0.7.6+build.180
 
 # Mod Properties
-	group=com.minelittlepony
-	displayname=Unicopia
-	authors=Sollace
-	description=Magical Abilities for Mine Little Pony!
-	version=3
-	release=SNAPSHOT
+  group=com.minelittlepony
+  displayname=Unicopia
+  authors=Sollace
+  description=Magical Abilities for Mine Little Pony!
+  version=3
+  release=SNAPSHOT
 
 # Dependencies
-	fabric_version=0.3.0+
-	kirin_version=1.14.4-1.4.4
+  fabric_version=0.4.29+
+  modmenu_version=1.8.+
+  kirin_version=1.5.2-1.15.2

src/main/java/com/minelittlepony/unicopia/ability/ChangelingDisguiseAbility.java

@@ -9,8 +9,8 @@ import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.entity.InAnimate;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.magic.spell.DisguiseSpell;
+import com.minelittlepony.unicopia.particles.UParticles;
 import com.minelittlepony.unicopia.util.VecHelper;
-import com.minelittlepony.unicopia.util.particles.UParticles;
 
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.Entity;
@@ -76,7 +76,7 @@ public class ChangelingDisguiseAbility extends ChangelingFeedAbility {
             }
         }
 
-        player.getEntityWorld().playSound(null, player.getBlockPos(), SoundEvents.ENTITY_PARROT_IMITATE_POLAR_BEAR, SoundCategory.PLAYERS, 1.4F, 0.4F);
+        player.getEntityWorld().playSound(null, player.getBlockPos(), SoundEvents.ENTITY_PARROT_IMITATE_RAVAGER, SoundCategory.PLAYERS, 1.4F, 0.4F);
 
         iplayer.getEffect(DisguiseSpell.class).orElseGet(() -> {
             DisguiseSpell disc = new DisguiseSpell();

src/main/java/com/minelittlepony/unicopia/ability/ChangelingFeedAbility.java

@@ -9,6 +9,8 @@ import org.lwjgl.glfw.GLFW;
 
 import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.entity.player.Pony;
+import com.minelittlepony.unicopia.particles.ParticleUtils;
+import com.minelittlepony.unicopia.particles.UParticles;
 import com.minelittlepony.unicopia.util.MagicalDamageSource;
 import com.minelittlepony.unicopia.util.VecHelper;
 
@@ -68,7 +70,7 @@ public class ChangelingFeedAbility implements Ability<Ability.Hit> {
     }
 
     private boolean canFeed(Pony player) {
-        return player.getOwner().getHealth() < player.getOwner().getHealthMaximum() || player.getOwner().canConsume(false);
+        return player.getOwner().getHealth() < player.getOwner().getMaximumHealth() || player.getOwner().canConsume(false);
     }
 
     private boolean canDrain(Entity e) {
@@ -101,7 +103,7 @@ public class ChangelingFeedAbility implements Ability<Ability.Hit> {
     public void apply(Pony iplayer, Hit data) {
         PlayerEntity player = iplayer.getOwner();
 
-        float maximumHealthGain = player.getHealthMaximum() - player.getHealth();
+        float maximumHealthGain = player.getMaximumHealth() - player.getHealth();
         int maximumFoodGain = player.canConsume(false) ? (20 - player.getHungerManager().getFoodLevel()) : 0;
 
         if (maximumHealthGain > 0 || maximumFoodGain > 0) {
@@ -134,13 +136,12 @@ public class ChangelingFeedAbility implements Ability<Ability.Hit> {
             living.damage(d, damage);
         }
 
-        // TODO: ParticleTypeRegistry
-        //ParticleTypeRegistry.spawnParticles(UParticles.CHANGELING_MAGIC, living, 7);
+        ParticleUtils.spawnParticles(UParticles.CHANGELING_MAGIC, living, 7);
 
         if (changeling.hasStatusEffect(StatusEffects.NAUSEA)) {
-            living.addPotionEffect(changeling.removePotionEffect(StatusEffects.NAUSEA));
+            living.addStatusEffect(changeling.removeStatusEffectInternal(StatusEffects.NAUSEA));
         } else if (changeling.getEntityWorld().random.nextInt(2300) == 0) {
-            living.addPotionEffect(new StatusEffectInstance(StatusEffects.WITHER, 20, 1));
+            living.addStatusEffect(new StatusEffectInstance(StatusEffects.WITHER, 20, 1));
         }
 
         if (living instanceof PlayerEntity) {
@@ -148,7 +149,7 @@ public class ChangelingFeedAbility implements Ability<Ability.Hit> {
             damage *= 1.6F;
 
             if (!changeling.hasStatusEffect(StatusEffects.HEALTH_BOOST)) {
-                changeling.addPotionEffect(new StatusEffectInstance(StatusEffects.HEALTH_BOOST, 13000, 1));
+                changeling.addStatusEffect(new StatusEffectInstance(StatusEffects.HEALTH_BOOST, 13000, 1));
             }
         }
 

src/main/java/com/minelittlepony/unicopia/ability/EarthPonyGrowAbility.java

@@ -4,8 +4,8 @@ import org.lwjgl.glfw.GLFW;
 
 import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.entity.player.Pony;
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
 import com.minelittlepony.unicopia.util.VecHelper;
-import com.minelittlepony.unicopia.util.particles.UParticles;
 
 import net.minecraft.block.BlockState;
 import net.minecraft.item.BoneMealItem;
@@ -95,7 +95,7 @@ public class EarthPonyGrowAbility implements Ability<Ability.Pos> {
         player.addExertion(3);
 
         if (player.getWorld().isClient()) {
-            player.spawnParticles(UParticles.UNICORN_MAGIC, 1);
+            player.spawnParticles(MagicParticleEffect.UNICORN, 1);
         }
     }
 

src/main/java/com/minelittlepony/unicopia/ability/EarthPonyStompAbility.java

@@ -133,9 +133,9 @@ public class EarthPonyStompAbility implements Ability<EarthPonyStompAbility.Data
                 if (dist <= rad + 3) {
                     double force = dist / 5;
                     i.addVelocity(
-                            -(player.x - i.x) / force,
-                            -(player.y - i.y - 2) / force + (dist < 1 ? dist : 0),
-                            -(player.z - i.z) / force);
+                            -(player.getX() - i.getX()) / force,
+                            -(player.getY() - i.getY() - 2) / force + (dist < 1 ? dist : 0),
+                            -(player.getZ() - i.getZ()) / force);
 
                     DamageSource damage = MagicalDamageSource.causePlayerDamage("smash", player);
 
@@ -157,7 +157,7 @@ public class EarthPonyStompAbility implements Ability<EarthPonyStompAbility.Data
             });
 
             BlockPos.iterate(pos.add(-rad, -rad, -rad), pos.add(rad, rad, rad)).forEach(i -> {
-                if (i.getSquaredDistance(player.x, player.y, player.z, true) <= rad*rad) {
+                if (i.getSquaredDistance(player.getX(), player.getY(), player.getZ(), true) <= rad*rad) {
                     spawnEffect(player.world, i);
                 }
             });
@@ -169,7 +169,7 @@ public class EarthPonyStompAbility implements Ability<EarthPonyStompAbility.Data
             iplayer.subtractEnergyCost(rad);
         } else if (data.hitType == 1) {
 
-            boolean harmed = player.getHealth() < player.getHealthMaximum();
+            boolean harmed = player.getHealth() < player.getMaximumHealth();
 
             if (harmed && player.world.random.nextInt(30) == 0) {
                 iplayer.subtractEnergyCost(3);
@@ -230,11 +230,11 @@ public class EarthPonyStompAbility implements Ability<EarthPonyStompAbility.Data
             yVel *= y * 5;
 
             for (int i = 0; i < shape.getVolumeOfSpawnableSpace(); i++) {
-                Vec3d point = shape.computePoint(player.getEntityWorld().random);
+                Vec3d point = shape.computePoint(player.getEntityWorld().random).add(player.getPos());
                 player.world.addParticle(new BlockStateParticleEffect(ParticleTypes.BLOCK, Blocks.DIRT.getDefaultState()),
-                        player.x + point.x,
-                        player.y + y + point.y,
-                        player.z + point.z,
+                        point.x,
+                        point.y + y,
+                        point.z,
                         0, yVel, 0
                 );
             }
@@ -350,7 +350,7 @@ public class EarthPonyStompAbility implements Ability<EarthPonyStompAbility.Data
                     WorldEvent.DESTROY_BLOCK.play(w, pos, state);
 
                     ItemEntity item = new ItemEntity(EntityType.ITEM, w);
-                    item.setPosition(pos.getX() + w.random.nextFloat(), pos.getY() - 0.5, pos.getZ() + w.random.nextFloat());
+                    item.setPos(pos.getX() + w.random.nextFloat(), pos.getY() - 0.5, pos.getZ() + w.random.nextFloat());
                     item.setStack(getApple(w, log));
 
                     drops.add(item);

src/main/java/com/minelittlepony/unicopia/ability/PegasusCloudInteractionAbility.java

@@ -6,8 +6,9 @@ import org.lwjgl.glfw.GLFW;
 
 import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.entity.player.Pony;
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
+import com.minelittlepony.unicopia.particles.UParticles;
 import com.minelittlepony.unicopia.util.VecHelper;
-import com.minelittlepony.unicopia.util.particles.UParticles;
 
 import net.minecraft.entity.Entity;
 
@@ -76,7 +77,7 @@ public class PegasusCloudInteractionAbility implements Ability<Ability.Numeric>
 
     @Override
     public void preApply(Pony player) {
-        player.spawnParticles(UParticles.UNICORN_MAGIC, 10);
+        player.spawnParticles(MagicParticleEffect.UNICORN, 10);
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/ability/UnicornCastingAbility.java

@@ -5,7 +5,7 @@ import org.lwjgl.glfw.GLFW;
 import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.magic.spell.ShieldSpell;
-import com.minelittlepony.unicopia.util.particles.UParticles;
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
 
 /**
  * A magic casting ability for unicorns.
@@ -60,11 +60,11 @@ public class UnicornCastingAbility implements Ability<Ability.Hit> {
 
     @Override
     public void preApply(Pony player) {
-        player.spawnParticles(UParticles.UNICORN_MAGIC, 5);
+        player.spawnParticles(MagicParticleEffect.UNICORN, 5);
     }
 
     @Override
     public void postApply(Pony player) {
-        player.spawnParticles(UParticles.UNICORN_MAGIC, 5);
+        player.spawnParticles(MagicParticleEffect.UNICORN, 5);
     }
 }

src/main/java/com/minelittlepony/unicopia/ability/UnicornTeleportAbility.java

@@ -4,8 +4,8 @@ import org.lwjgl.glfw.GLFW;
 
 import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.entity.player.Pony;
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
 import com.minelittlepony.unicopia.util.VecHelper;
-import com.minelittlepony.unicopia.util.particles.UParticles;
 
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
@@ -131,10 +131,10 @@ public class UnicornTeleportAbility implements Ability<Ability.Pos> {
             }
         }
 
-        player.setPosition(
-                data.x + (player.x - Math.floor(player.x)),
+        player.setPos(
+                data.x + (player.getX() - Math.floor(player.getX())),
                 data.y,
-                data.z + (player.z - Math.floor(player.z)));
+                data.z + (player.getZ() - Math.floor(player.getZ())));
         iplayer.subtractEnergyCost(distance);
 
         player.fallDistance /= distance;
@@ -166,11 +166,11 @@ public class UnicornTeleportAbility implements Ability<Ability.Pos> {
     @Override
     public void preApply(Pony player) {
         player.addExertion(3);
-        player.spawnParticles(UParticles.UNICORN_MAGIC, 5);
+        player.spawnParticles(MagicParticleEffect.UNICORN, 5);
     }
 
     @Override
     public void postApply(Pony player) {
-        player.spawnParticles(UParticles.UNICORN_MAGIC, 5);
+        player.spawnParticles(MagicParticleEffect.UNICORN, 5);
     }
 }

src/main/java/com/minelittlepony/unicopia/advancement/AdvancementPredicate.java

@@ -24,7 +24,7 @@ class AdvancementPredicate {
     }
 
     public boolean test(ServerWorld world, PlayerAdvancementTracker tracker) {
-        Advancement advancement = world.getServer().getAdvancementManager().get(id);
+        Advancement advancement = world.getServer().getAdvancementLoader().get(id);
 
         return advancement != null && tracker.getProgress(advancement).isDone();
     }

src/main/java/com/minelittlepony/unicopia/advancement/BOHDeathCriterion.java

@@ -36,7 +36,7 @@ public class BOHDeathCriterion extends AbstractCriterion<BOHDeathCriterion.Entry
     }
 
     public void trigger(ServerPlayerEntity player) {
-        PlayerAdvancementTracker key = player.getAdvancementManager();
+        PlayerAdvancementTracker key = player.getAdvancementTracker();
 
         Optional.ofNullable(listeners.get(key)).ifPresent(e -> {
             e.trigger((ServerWorld)player.world, key);
@@ -68,7 +68,7 @@ public class BOHDeathCriterion extends AbstractCriterion<BOHDeathCriterion.Entry
         public void trigger(ServerWorld world, PlayerAdvancementTracker tracker) {
             listeners.stream()
                 .filter(listener -> listener.getConditions().test(world, tracker))
-                .forEach(winner -> winner.apply(advancement));
+                .forEach(winner -> winner.grant(advancement));
         }
     }
 }

src/main/java/com/minelittlepony/unicopia/block/AbstractDoorBlock.java

@@ -10,6 +10,7 @@ import net.minecraft.block.DoorBlock;
 import net.minecraft.block.Material;
 import net.minecraft.block.enums.DoubleBlockHalf;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
@@ -31,7 +32,7 @@ public abstract class AbstractDoorBlock extends DoorBlock {
     }
 
     @Override
-    public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
         return toggleDoor(world, pos, false, true, player);
     }
 
@@ -52,15 +53,15 @@ public abstract class AbstractDoorBlock extends DoorBlock {
         return player == null || material != Material.METAL;
     }
 
-    protected boolean toggleDoor(World world, BlockPos pos, boolean open, boolean force, @Nullable PlayerEntity player) {
+    protected ActionResult toggleDoor(World world, BlockPos pos, boolean open, boolean force, @Nullable PlayerEntity player) {
         if (!canOpen(player)) {
-            return false;
+            return ActionResult.PASS;
         }
 
         BlockState state = world.getBlockState(pos);
 
         if (state.getBlock() != this) {
-            return false;
+            return ActionResult.PASS;
         }
 
         BlockPos lower = getPrimaryDoorPos(state, pos);
@@ -68,11 +69,11 @@ public abstract class AbstractDoorBlock extends DoorBlock {
         BlockState mainDoor = pos == lower ? state : world.getBlockState(lower);
 
         if (mainDoor.getBlock() != this) {
-            return false;
+            return ActionResult.PASS;
         }
 
         if (!force && mainDoor.get(OPEN) == open) {
-            return false;
+            return ActionResult.FAIL;
         }
 
         state = mainDoor.cycle(OPEN);
@@ -83,7 +84,7 @@ public abstract class AbstractDoorBlock extends DoorBlock {
 
         world.playLevelEvent(player, sound.getId(), pos, 0);
 
-        return true;
+        return ActionResult.SUCCESS;
     }
 
     protected BlockPos getPrimaryDoorPos(BlockState state, BlockPos pos) {

src/main/java/com/minelittlepony/unicopia/block/BlockGrowingCuccoon.java

@@ -8,8 +8,8 @@ import com.minelittlepony.unicopia.util.MagicalDamageSource;
 import com.minelittlepony.unicopia.util.PosHelper;
 
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
+import net.fabricmc.fabric.api.tools.FabricToolTags;
 import net.minecraft.block.Block;
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityContext;
@@ -18,22 +18,23 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.Items;
 import net.minecraft.nbt.CompoundTag;
+import net.minecraft.nbt.NbtHelper;
 import net.minecraft.particle.ParticleTypes;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.sound.BlockSoundGroup;
 import net.minecraft.sound.SoundCategory;
-import net.minecraft.state.StateFactory;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.EnumProperty;
 import net.minecraft.state.property.IntProperty;
 import net.minecraft.util.StringIdentifiable;
-import net.minecraft.util.TagHelper;
 import net.minecraft.util.math.Box;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.shape.VoxelShape;
 import net.minecraft.world.BlockView;
-import net.minecraft.world.ViewableWorld;
 import net.minecraft.world.World;
+import net.minecraft.world.WorldView;
 
 public class BlockGrowingCuccoon extends Block {
 
@@ -53,7 +54,6 @@ public class BlockGrowingCuccoon extends Block {
             Block.createCuboidShape(2, 0, 2, 14, 12, 14),
     };
 
-    @SuppressWarnings("deprecation")
     public BlockGrowingCuccoon() {
         super(FabricBlockSettings.of(UMaterials.HIVE)
                 .ticksRandomly()
@@ -61,11 +61,11 @@ public class BlockGrowingCuccoon extends Block {
                 .lightLevel(9)
                 .slipperiness(0.5F)
                 .sounds(BlockSoundGroup.SLIME)
-                .breakByTool(net.fabricmc.fabric.api.tools.FabricToolTags.SHOVELS, 2)
+                .breakByTool(FabricToolTags.SHOVELS, 2)
                 .build()
         );
 
-        setDefaultState(stateFactory.getDefaultState()
+        setDefaultState(stateManager.getDefaultState()
                 .with(AGE, 0)
                 .with(SHAPE, Shape.BULB));
     }
@@ -87,18 +87,13 @@ public class BlockGrowingCuccoon extends Block {
         return true;
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return BlockRenderLayer.TRANSLUCENT;
-    }
-
     @Override
     public Block.OffsetType getOffsetType() {
         return Block.OffsetType.XZ;
     }
 
     @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random rand) {
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random rand) {
         if (!checkSupport(world, pos)) {
             breakConnected(world, pos);
             return;
@@ -108,7 +103,7 @@ public class BlockGrowingCuccoon extends Block {
 
         BlockPos below = pos.down();
 
-        if (world.isBlockLoaded(below)) {
+        if (world.isChunkLoaded(below)) {
             boolean spaceBelow = world.isAir(below);
 
             Shape shape = state.get(SHAPE);
@@ -163,7 +158,7 @@ public class BlockGrowingCuccoon extends Block {
     }
 
     @Override
-    public boolean canPlaceAt(BlockState state, ViewableWorld world, BlockPos pos) {
+    public boolean canPlaceAt(BlockState state, WorldView world, BlockPos pos) {
         return super.canPlaceAt(state, world, pos) && checkSupport(world, pos);
     }
 
@@ -200,7 +195,7 @@ public class BlockGrowingCuccoon extends Block {
                                 PlayerEntity player = (PlayerEntity)living;
 
                                 skull.setTag(new CompoundTag());
-                                skull.getTag().put("SkullOwner", TagHelper.serializeProfile(new CompoundTag(), player.getGameProfile()));
+                                skull.getTag().put("SkullOwner", NbtHelper.fromGameProfile(new CompoundTag(), player.getGameProfile()));
                                 player.dropItem(skull, true);
                             } else {
                                 living.dropItem(Items.SKELETON_SKULL, 1);
@@ -244,7 +239,7 @@ public class BlockGrowingCuccoon extends Block {
 
 
     @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
         builder.add(AGE, SHAPE);
     }
 
@@ -264,9 +259,9 @@ public class BlockGrowingCuccoon extends Block {
                         .offset(offset.x, offset.y, offset.z)
                         .getBoundingBox();
 
-                double x = bounds.minX + (bounds.maxX - bounds.minX) * rand.nextFloat();
-                double y = bounds.minY;
-                double z = bounds.minZ + (bounds.maxZ - bounds.minZ) * rand.nextFloat();
+                double x = bounds.x1 + (bounds.x2 - bounds.x1) * rand.nextFloat();
+                double y = bounds.y1;
+                double z = bounds.z1 + (bounds.z2 - bounds.z1) * rand.nextFloat();
 
                 world.addParticle(ParticleTypes.DRIPPING_LAVA, x, y, z, 0, 0, 0);
             }

src/main/java/com/minelittlepony/unicopia/block/ChiselledChitinBlock.java

@@ -11,7 +11,7 @@ import net.minecraft.block.BlockState;
 import net.minecraft.block.MaterialColor;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemPlacementContext;
-import net.minecraft.state.StateFactory;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.Properties;
 import net.minecraft.util.BlockMirror;
 import net.minecraft.util.BlockRotation;
@@ -27,7 +27,7 @@ public class ChiselledChitinBlock extends Block {
                 .materialColor(MaterialColor.BLACK)
                 .build()
         );
-        setDefaultState(stateFactory.getDefaultState()
+        setDefaultState(stateManager.getDefaultState()
                 .with(Properties.FACING, Direction.UP)
         );
     }
@@ -49,7 +49,7 @@ public class ChiselledChitinBlock extends Block {
     }
 
     @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
         builder.add(Properties.FACING);
     }
 

src/main/java/com/minelittlepony/unicopia/block/ChitinBlock.java

@@ -10,7 +10,7 @@ import net.minecraft.block.Blocks;
 import net.minecraft.block.MaterialColor;
 import net.minecraft.entity.EntityContext;
 import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.state.StateFactory;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.EnumProperty;
 import net.minecraft.util.StringIdentifiable;
 import net.minecraft.util.math.BlockPos;
@@ -29,7 +29,7 @@ public class ChitinBlock extends Block {
                 .materialColor(MaterialColor.BLACK)
                 .build()
         );
-        setDefaultState(stateFactory.getDefaultState().with(COVERING, Covering.UNCOVERED));
+        setDefaultState(stateManager.getDefaultState().with(COVERING, Covering.UNCOVERED));
 
         // TODO: drops:
         //  UItems.chitin_shell x 3
@@ -72,7 +72,7 @@ public class ChitinBlock extends Block {
     }
 
     @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
         builder.add(COVERING);
     }
 

src/main/java/com/minelittlepony/unicopia/block/FruitLeavesBlock.java

@@ -16,11 +16,13 @@ import net.minecraft.block.Material;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.DyeItem;
 import net.minecraft.item.ItemStack;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.sound.BlockSoundGroup;
 import net.minecraft.sound.SoundCategory;
 import net.minecraft.sound.SoundEvents;
-import net.minecraft.state.StateFactory;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.BooleanProperty;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.DyeColor;
 import net.minecraft.util.Hand;
 import net.minecraft.util.hit.BlockHitResult;
@@ -48,13 +50,19 @@ public class FruitLeavesBlock extends LeavesBlock implements Colourful {
                 .build()
         );
 
-        setDefaultState(stateFactory.getDefaultState()
+        setDefaultState(stateManager.getDefaultState()
             .with(HEAVY, false)
             .with(DISTANCE, 7)
             .with(PERSISTENT, false)
         );
     }
 
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder);
+        builder.add(HEAVY);
+    }
+
     public FruitLeavesBlock hardy(boolean value) {
         hardy = value;
         return this;
@@ -81,7 +89,7 @@ public class FruitLeavesBlock extends LeavesBlock implements Colourful {
     }
 
     @Override
-    public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
         ItemStack stack = player.getStackInHand(hand);
 
         if (Pony.of(player).getSpecies().canUseEarth()) {
@@ -104,15 +112,15 @@ public class FruitLeavesBlock extends LeavesBlock implements Colourful {
                 }
             }
 
-            return true;
+            return ActionResult.SUCCESS;
         }
 
-        return false;
+        return ActionResult.PASS;
     }
 
     @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random rand) {
-        if (!world.isClient && world.isBlockLoaded(pos) && !state.get(PERSISTENT)) {
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random rand) {
+        if (!world.isClient && world.isChunkLoaded(pos) && !state.get(PERSISTENT)) {
             int growthChance = getGrowthChance(world, pos, state);
 
             if (!state.get(HEAVY) && (growthChance <= 0 || rand.nextInt(growthChance) == 0)) {
@@ -123,7 +131,7 @@ public class FruitLeavesBlock extends LeavesBlock implements Colourful {
                 if (state.get(HEAVY) && (growthChance <= 0 || rand.nextInt(growthChance) == 0)) {
                     dropContents(world, pos, state, 0);
                 } else {
-                    super.onScheduledTick(state, world, pos, rand);
+                    super.scheduledTick(state, world, pos, rand);
                 }
             }
         }
@@ -132,7 +140,7 @@ public class FruitLeavesBlock extends LeavesBlock implements Colourful {
     protected int getGrowthChance(World world, BlockPos pos, BlockState state) {
         int chance = baseGrowthChance;
 
-        if (!hardy && !world.isDaylight()) {
+        if (!hardy && !world.isDay()) {
             chance *= 40;
         }
 
@@ -169,10 +177,4 @@ public class FruitLeavesBlock extends LeavesBlock implements Colourful {
         world.playSound(null, pos, SoundEvents.ENTITY_ITEM_FRAME_PLACE, SoundCategory.BLOCKS, 0.3F, 1);
         world.setBlockState(pos, state.with(HEAVY, false));
     }
-
-    @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
-        super.appendProperties(builder);
-        builder.add(HEAVY);
-    }
 }

src/main/java/com/minelittlepony/unicopia/block/GlowingGemBlock.java

@@ -4,7 +4,7 @@ import java.util.Random;
 
 import com.minelittlepony.unicopia.gas.CloudType;
 import com.minelittlepony.unicopia.gas.Gas;
-import com.minelittlepony.unicopia.util.particles.UParticles;
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
 
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
 import net.minecraft.block.Block;
@@ -16,12 +16,14 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.Items;
 import net.minecraft.particle.ParticleTypes;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.sound.BlockSoundGroup;
 import net.minecraft.sound.SoundCategory;
 import net.minecraft.sound.SoundEvents;
-import net.minecraft.state.StateFactory;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.BooleanProperty;
 import net.minecraft.state.property.Properties;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
@@ -65,12 +67,17 @@ public class GlowingGemBlock extends TorchBlock implements Gas {
                 .sounds(BlockSoundGroup.GLASS)
                 .build()
         );
-        setDefaultState(stateFactory.getDefaultState()
+        setDefaultState(stateManager.getDefaultState()
                 .with(Properties.FACING, Direction.UP)
                 .with(ON, true)
         );
     }
 
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        builder.add(Properties.FACING).add(ON);
+    }
+
     @Override
     public VoxelShape getOutlineShape(BlockState state, BlockView source, BlockPos pos, EntityContext context) {
         switch (state.get(Properties.FACING)) {
@@ -83,7 +90,7 @@ public class GlowingGemBlock extends TorchBlock implements Gas {
     }
 
     @Override
-    public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
 
         if (!state.get(ON)) {
             ItemStack held = player.getStackInHand(hand);
@@ -99,10 +106,10 @@ public class GlowingGemBlock extends TorchBlock implements Gas {
                 }
             }
 
-            return true;
+            return ActionResult.SUCCESS;
         }
 
-        return false;
+        return ActionResult.PASS;
     }
 
     @Override
@@ -126,7 +133,7 @@ public class GlowingGemBlock extends TorchBlock implements Gas {
 
         if (state.get(ON)) {
             for (int i = 0; i < 3; i++) {
-                world.addParticle(UParticles.UNICORN_MAGIC,
+                world.addParticle(MagicParticleEffect.UNICORN,
                         x - 0.3, y - 0.3, z - 0.3,
                         rand.nextFloat(), rand.nextFloat(), rand.nextFloat());
             }
@@ -136,7 +143,7 @@ public class GlowingGemBlock extends TorchBlock implements Gas {
     }
 
     @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random random) {
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random random) {
         if (world.hasRain(pos)) {
             if (state.get(ON)) {
                 world.playSound(null, pos, SoundEvents.BLOCK_REDSTONE_TORCH_BURNOUT, SoundCategory.BLOCKS, 0.5F, 2.6F + (world.random.nextFloat() - world.random.nextFloat()) * 0.8F);
@@ -188,9 +195,4 @@ public class GlowingGemBlock extends TorchBlock implements Gas {
 
         return 0;
     }
-
-    @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
-        builder.add(Properties.FACING).add(ON);
-    }
 }

src/main/java/com/minelittlepony/unicopia/block/HiveWallBlock.java

@@ -12,6 +12,7 @@ import com.minelittlepony.unicopia.util.shape.Shape;
 import com.minelittlepony.unicopia.util.shape.Sphere;
 
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
+import net.fabricmc.fabric.api.tools.FabricToolTags;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
@@ -22,18 +23,20 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemPlacementContext;
 import net.minecraft.particle.BlockStateParticleEffect;
 import net.minecraft.particle.ParticleTypes;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.sound.BlockSoundGroup;
 import net.minecraft.sound.SoundCategory;
-import net.minecraft.state.StateFactory;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.EnumProperty;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
 import net.minecraft.util.StringIdentifiable;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.Vec3d;
-import net.minecraft.world.ViewableWorld;
 import net.minecraft.world.World;
+import net.minecraft.world.WorldView;
 
 public class HiveWallBlock extends FallingBlock {
 
@@ -42,7 +45,6 @@ public class HiveWallBlock extends FallingBlock {
 
     private static final Shape shape = new Sphere(false, 1.5);
 
-    @SuppressWarnings("deprecation")
     public HiveWallBlock() {
         super(FabricBlockSettings.of(UMaterials.HIVE)
                 .noCollision()
@@ -51,16 +53,21 @@ public class HiveWallBlock extends FallingBlock {
                 .ticksRandomly()
                 .lightLevel(1)
                 .sounds(BlockSoundGroup.SAND)
-                .breakByTool(net.fabricmc.fabric.api.tools.FabricToolTags.PICKAXES, 1)
+                .breakByTool(FabricToolTags.PICKAXES, 1)
                 .build()
         );
-        setDefaultState(stateFactory.getDefaultState()
+        setDefaultState(stateManager.getDefaultState()
                 .with(STATE, State.GROWING).with(AXIS, Axis.Y)
         );
     }
 
     @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random rand) {
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        builder.add(STATE).add(AXIS);
+    }
+
+    @Override
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random rand) {
 
         if (rand.nextInt(300) == 0) {
             world.playSound(null, pos, USounds.INSECT, SoundCategory.BLOCKS, 1, 1);
@@ -137,7 +144,7 @@ public class HiveWallBlock extends FallingBlock {
     }
 
     @Override
-    public int getTickRate(ViewableWorld view) {
+    public int getTickRate(WorldView view) {
        return 10;
     }
 
@@ -200,7 +207,7 @@ public class HiveWallBlock extends FallingBlock {
     }
 
     @Override
-    public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
 
         if (hand == Hand.MAIN_HAND && player.getStackInHand(hand).isEmpty()) {
             Pony iplayer = Pony.of(player);
@@ -214,11 +221,11 @@ public class HiveWallBlock extends FallingBlock {
                     }
                 });
 
-                return true;
+                return ActionResult.SUCCESS;
             }
         }
 
-        return false;
+        return ActionResult.PASS;
     }
 
     @Override
@@ -257,7 +264,7 @@ public class HiveWallBlock extends FallingBlock {
     }
 
     protected boolean canSpreadInto(World world, BlockPos pos, Axis axis) {
-        if (world.isBlockLoaded(pos) && isEmptySpace(world, pos)) {
+        if (world.isChunkLoaded(pos) && isEmptySpace(world, pos)) {
             boolean one = false;
 
             for (Direction facing : axis.getFacings()) {
@@ -277,11 +284,6 @@ public class HiveWallBlock extends FallingBlock {
         return false;
     }
 
-    @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
-        builder.add(STATE).add(AXIS);
-    }
-
     public enum State implements StringIdentifiable {
         GROWING,
         STABLE,

src/main/java/com/minelittlepony/unicopia/block/SlimeLayerBlock.java

@@ -1,7 +1,6 @@
 package com.minelittlepony.unicopia.block;
 
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Material;
 import net.minecraft.block.MaterialColor;
@@ -23,11 +22,6 @@ public class SlimeLayerBlock extends SnowBlock {
         // TODO: drops Items.SLIME_BALL x1
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return BlockRenderLayer.TRANSLUCENT;
-    }
-
     @Override
     public void onSteppedOn(World world, BlockPos pos, Entity entity) {
         float factor = getMotionFactor(world.getBlockState(pos));

src/main/java/com/minelittlepony/unicopia/block/StickBlock.java

@@ -2,7 +2,6 @@ package com.minelittlepony.unicopia.block;
 
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
 import net.minecraft.block.Block;
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.FarmlandBlock;
 import net.minecraft.block.Material;
@@ -12,6 +11,7 @@ import net.minecraft.item.ItemStack;
 import net.minecraft.item.Items;
 import net.minecraft.item.LeadItem;
 import net.minecraft.sound.BlockSoundGroup;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
@@ -20,8 +20,8 @@ import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.shape.VoxelShape;
 import net.minecraft.util.shape.VoxelShapes;
 import net.minecraft.world.BlockView;
-import net.minecraft.world.ViewableWorld;
 import net.minecraft.world.World;
+import net.minecraft.world.WorldView;
 
 public class StickBlock extends Block {
 
@@ -43,11 +43,6 @@ public class StickBlock extends Block {
         // TODO: drops Items.STICK x1
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return BlockRenderLayer.TRANSLUCENT;
-    }
-
     @Deprecated
     @Override
     public VoxelShape getOutlineShape(BlockState state, BlockView source, BlockPos pos, EntityContext context) {
@@ -61,18 +56,21 @@ public class StickBlock extends Block {
     }
 
     @Override
-    public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
         if (!world.isClient) {
             return LeadItem.attachHeldMobsToBlock(player, world, pos);
         }
 
         ItemStack stack = player.getStackInHand(hand);
 
-        return stack.getItem() == Items.LEAD || stack.isEmpty();
+        if (stack.getItem() == Items.LEAD || stack.isEmpty()) {
+            return ActionResult.SUCCESS;
+        }
+        return ActionResult.PASS;
     }
 
     @Override
-    public boolean canPlaceAt(BlockState state, ViewableWorld world, BlockPos pos) {
+    public boolean canPlaceAt(BlockState state, WorldView world, BlockPos pos) {
         Block block = state.getBlock();
 
         return block instanceof StickBlock || block instanceof FarmlandBlock;

src/main/java/com/minelittlepony/unicopia/block/TallCropBlock.java

@@ -12,7 +12,8 @@ import net.minecraft.block.CropBlock;
 import net.minecraft.entity.EntityContext;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.Item;
-import net.minecraft.state.StateFactory;
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.EnumProperty;
 import net.minecraft.state.property.IntProperty;
 import net.minecraft.util.StringIdentifiable;
@@ -21,8 +22,8 @@ import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.shape.VoxelShape;
 import net.minecraft.util.shape.VoxelShapes;
 import net.minecraft.world.BlockView;
-import net.minecraft.world.ViewableWorld;
 import net.minecraft.world.World;
+import net.minecraft.world.WorldView;
 
 public class TallCropBlock extends CropBlock {
 
@@ -53,6 +54,11 @@ public class TallCropBlock extends CropBlock {
         setDefaultState(getDefaultState().with(HALF, Half.BOTTOM));
     }
 
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        builder.add(AGE, HALF);
+    }
+
     @Override
     public OffsetType getOffsetType() {
         return OffsetType.XZ;
@@ -74,8 +80,8 @@ public class TallCropBlock extends CropBlock {
     }
 
     @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random rand) {
-        if (rand.nextInt(10) != 0 && world.isBlockLoaded(pos) && world.getLightLevel(pos.up()) >= 9) {
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random rand) {
+        if (rand.nextInt(10) != 0 && world.isChunkLoaded(pos) && world.getLightLevel(pos.up()) >= 9) {
             if (canGrow(world, rand, pos, state)) {
                 growUpwards(world, pos, state, 1);
             }
@@ -123,7 +129,7 @@ public class TallCropBlock extends CropBlock {
     }
 
     @Override
-    public boolean canPlaceAt(BlockState state, ViewableWorld world, BlockPos pos) {
+    public boolean canPlaceAt(BlockState state, WorldView world, BlockPos pos) {
         return getHalf(state) != Half.BOTTOM || super.canPlaceAt(state, world, pos);
     }
 
@@ -160,11 +166,6 @@ public class TallCropBlock extends CropBlock {
         return super.getGrowthAmount(world) / 2;
     }
 
-    @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
-        builder.add(AGE, HALF);
-    }
-
     @Override
     public VoxelShape getCollisionShape(BlockState state, BlockView view, BlockPos pos, EntityContext context) {
         if (getHalf(state) != Half.MIDDLE) {

src/main/java/com/minelittlepony/unicopia/block/TomatoPlantBlock.java

@@ -15,10 +15,12 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.Items;
+import net.minecraft.loot.context.LootContext;
 import net.minecraft.sound.BlockSoundGroup;
 import net.minecraft.sound.SoundCategory;
-import net.minecraft.state.StateFactory;
+import net.minecraft.state.StateManager;
 import net.minecraft.state.property.EnumProperty;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
 import net.minecraft.util.StringIdentifiable;
 import net.minecraft.util.hit.BlockHitResult;
@@ -26,9 +28,8 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.util.shape.VoxelShape;
 import net.minecraft.world.BlockView;
-import net.minecraft.world.ViewableWorld;
 import net.minecraft.world.World;
-import net.minecraft.world.loot.context.LootContext;
+import net.minecraft.world.WorldView;
 
 public class TomatoPlantBlock extends CropBlock {
 
@@ -49,6 +50,12 @@ public class TomatoPlantBlock extends CropBlock {
         // if mature: UItems.tomato
     }
 
+    @Override
+    protected void appendProperties(StateManager.Builder<Block, BlockState> builder) {
+        super.appendProperties(builder);
+        builder.add(TYPE);
+    }
+
     @Deprecated
     @Override
     public VoxelShape getOutlineShape(BlockState state, BlockView source, BlockPos pos, EntityContext context) {
@@ -56,12 +63,6 @@ public class TomatoPlantBlock extends CropBlock {
         return StickBlock.BOUNDING_BOX.offset(off.x, off.y, off.z);
     }
 
-    @Override
-    protected void appendProperties(StateFactory.Builder<Block, BlockState> builder) {
-        super.appendProperties(builder);
-        builder.add(TYPE);
-    }
-
     @Override
     public Block.OffsetType getOffsetType() {
         return Block.OffsetType.XZ;
@@ -73,7 +74,7 @@ public class TomatoPlantBlock extends CropBlock {
     }
 
     @Override
-    public boolean canPlaceAt(BlockState state, ViewableWorld world, BlockPos pos) {
+    public boolean canPlaceAt(BlockState state, WorldView world, BlockPos pos) {
         if (world.getBlockState(pos.down()).getBlock() instanceof TomatoPlantBlock) {
             return true;
         }
@@ -106,7 +107,7 @@ public class TomatoPlantBlock extends CropBlock {
     }
 
     @Override
-    public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
 
         if (hand == Hand.MAIN_HAND && isMature(state)) {
             if (player.getStackInHand(hand).isEmpty()) {
@@ -126,11 +127,11 @@ public class TomatoPlantBlock extends CropBlock {
 
                 world.setBlockState(pos, state.with(getAgeProperty(), 0));
 
-                return true;
+                return ActionResult.SUCCESS;
             }
         }
 
-        return false;
+        return ActionResult.PASS;
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/block/UBlocks.java

@@ -24,9 +24,9 @@ import net.minecraft.util.Identifier;
 import net.minecraft.util.registry.Registry;
 
 public interface UBlocks {
-    CloudBlock normal_cloud = register(new CloudBlock(UMaterials.CLOUD, CloudType.NORMAL), "cloud_block");
-    CloudBlock enchanted_cloud = register(new CloudBlock(UMaterials.CLOUD, CloudType.ENCHANTED), "enchanted_cloud_block");
-    CloudBlock packed_cloud = register(new CloudBlock(UMaterials.CLOUD, CloudType.PACKED), "packed_cloud_block");
+    CloudBlock normal_cloud = register(new CloudBlock(CloudType.NORMAL), "cloud_block");
+    CloudBlock enchanted_cloud = register(new CloudBlock(CloudType.ENCHANTED), "enchanted_cloud_block");
+    CloudBlock packed_cloud = register(new CloudBlock(CloudType.PACKED), "packed_cloud_block");
 
     CloudStairsBlock cloud_stairs = register(new CloudStairsBlock(normal_cloud.getDefaultState(), FabricBlockSettings.of(UMaterials.CLOUD).build()), "cloud_stairs");
 
@@ -43,7 +43,7 @@ public interface UBlocks {
 
     CloudAnvilBlock anvil = register(new CloudAnvilBlock(), "anvil");
 
-    CloudFenceBlock cloud_fence = register(new CloudFenceBlock(UMaterials.CLOUD, CloudType.NORMAL), "cloud_fence");
+    CloudFenceBlock cloud_fence = register(new CloudFenceBlock(CloudType.NORMAL), "cloud_fence");
 
     TallCropBlock alfalfa = register(new TallCropBlock(FabricBlockSettings.of(Material.PLANT).noCollision().ticksRandomly().breakInstantly().sounds(BlockSoundGroup.CROP).build()), "alfalfa");
 

src/main/java/com/minelittlepony/unicopia/block/USlab.java

@@ -3,12 +3,12 @@ package com.minelittlepony.unicopia.block;
 import java.util.Random;
 
 import net.minecraft.block.Block;
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.SlabBlock;
 import net.minecraft.block.enums.SlabType;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.BlockView;
 import net.minecraft.world.World;
@@ -37,20 +37,9 @@ public abstract class USlab<T extends Block> extends SlabBlock {
         return state.get(TYPE) == SlabType.DOUBLE;
     }
 
-    @Deprecated
     @Override
-    public boolean isOpaque(BlockState state) {
-        return isDouble(state) && modelBlock != null && modelBlock.isOpaque(state);
-    }
-
-    @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random rand) {
-        modelBlock.onScheduledTick(state, world, pos, rand);
-    }
-
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return modelBlock.getRenderLayer();
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random rand) {
+        modelBlock.scheduledTick(state, world, pos, rand);
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/client/URenderers.java

@@ -1,39 +1,39 @@
 package com.minelittlepony.unicopia.client;
 
+import com.minelittlepony.unicopia.client.particle.ChangelingMagicParticle;
+import com.minelittlepony.unicopia.client.particle.DiskParticle;
+import com.minelittlepony.unicopia.client.particle.MagicParticle;
+import com.minelittlepony.unicopia.client.particle.RaindropsParticle;
+import com.minelittlepony.unicopia.client.particle.SphereParticle;
 import com.minelittlepony.unicopia.client.render.ButterflyEntityRenderer;
 import com.minelittlepony.unicopia.client.render.CloudEntityRenderer;
 import com.minelittlepony.unicopia.client.render.CuccoonEntityRenderer;
 import com.minelittlepony.unicopia.client.render.RainbowEntityRenderer;
 import com.minelittlepony.unicopia.client.render.SpearEntityRenderer;
-import com.minelittlepony.unicopia.client.render.RenderSpellbook;
+import com.minelittlepony.unicopia.client.render.SpellbookEntityRender;
 import com.minelittlepony.unicopia.client.render.SpellcastEntityRenderer;
-import com.minelittlepony.unicopia.entity.ButterflyEntity;
-import com.minelittlepony.unicopia.entity.CloudEntity;
-import com.minelittlepony.unicopia.entity.CuccoonEntity;
-import com.minelittlepony.unicopia.entity.ProjectileEntity;
-import com.minelittlepony.unicopia.entity.RainbowEntity;
-import com.minelittlepony.unicopia.entity.SpearEntity;
-import com.minelittlepony.unicopia.entity.SpellbookEntity;
-import com.minelittlepony.unicopia.entity.SpellcastEntity;
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
+import com.minelittlepony.unicopia.entity.UEntities;
+import com.minelittlepony.unicopia.particles.UParticles;
+
+import net.fabricmc.fabric.api.client.particle.v1.ParticleFactoryRegistry;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
 import net.minecraft.client.render.entity.FlyingItemEntityRenderer;
 
 public interface URenderers {
     static void bootstrap() {
-        EntityRendererRegistry.INSTANCE.register(CloudEntity.class, CloudEntityRenderer::new);
-        EntityRendererRegistry.INSTANCE.register(SpellcastEntity.class, SpellcastEntityRenderer::new);
-        EntityRendererRegistry.INSTANCE.register(ProjectileEntity.class, (manager, context) -> new FlyingItemEntityRenderer<>(manager, context.getItemRenderer()));
-        EntityRendererRegistry.INSTANCE.register(SpellbookEntity.class, RenderSpellbook::new);
-        EntityRendererRegistry.INSTANCE.register(RainbowEntity.class, RainbowEntityRenderer::new);
-        EntityRendererRegistry.INSTANCE.register(ButterflyEntity.class, ButterflyEntityRenderer::new);
-        EntityRendererRegistry.INSTANCE.register(CuccoonEntity.class, CuccoonEntityRenderer::new);
-        EntityRendererRegistry.INSTANCE.register(SpearEntity.class, SpearEntityRenderer::new);
+        EntityRendererRegistry.INSTANCE.register(UEntities.CLOUD, CloudEntityRenderer::new);
+        EntityRendererRegistry.INSTANCE.register(UEntities.MAGIC_SPELL, SpellcastEntityRenderer::new);
+        EntityRendererRegistry.INSTANCE.register(UEntities.THROWN_ITEM, (manager, context) -> new FlyingItemEntityRenderer<>(manager, context.getItemRenderer()));
+        EntityRendererRegistry.INSTANCE.register(UEntities.SPELLBOOK, SpellbookEntityRender::new);
+        EntityRendererRegistry.INSTANCE.register(UEntities.RAINBOW, RainbowEntityRenderer::new);
+        EntityRendererRegistry.INSTANCE.register(UEntities.BUTTERFLY, ButterflyEntityRenderer::new);
+        EntityRendererRegistry.INSTANCE.register(UEntities.CUCCOON, CuccoonEntityRenderer::new);
+        EntityRendererRegistry.INSTANCE.register(UEntities.THROWN_SPEAR, SpearEntityRenderer::new);
 
-        // TODO: ParticleFactoryRegistry
-        //ParticleFactoryRegistry.instance().register(UParticles.UNICORN_MAGIC, MagicParticle::new);
-        //ParticleFactoryRegistry.instance().register(UParticles.CHANGELING_MAGIC, ChangelingMagicParticle::new);
-        //ParticleFactoryRegistry.instance().register(UParticles.RAIN_DROPS, RaindropsParticle::new);
-        //ParticleFactoryRegistry.instance().register(UParticles.SPHERE, SphereParticle::new);
-        //ParticleFactoryRegistry.instance().register(UParticles.DISK, DiskParticle::new);
+        ParticleFactoryRegistry.getInstance().register(UParticles.UNICORN_MAGIC, MagicParticle.Factory::new);
+        ParticleFactoryRegistry.getInstance().register(UParticles.CHANGELING_MAGIC, ChangelingMagicParticle.Factory::new);
+        ParticleFactoryRegistry.getInstance().register(UParticles.RAIN_DROPS, RaindropsParticle.Factory::new);
+        ParticleFactoryRegistry.getInstance().register(UParticles.SPHERE, SphereParticle.Factory::new);
+        ParticleFactoryRegistry.getInstance().register(UParticles.DISK, DiskParticle.Factory::new);
     }
 }

src/main/java/com/minelittlepony/unicopia/client/UnicopiaClient.java

@@ -13,7 +13,6 @@ import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.Unicopia;
 import com.minelittlepony.unicopia.ability.Abilities;
 import com.minelittlepony.unicopia.block.UBlocks;
-import com.minelittlepony.unicopia.client.render.DisguiseRenderer;
 import com.minelittlepony.unicopia.ducks.Colourful;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.item.UItems;
@@ -21,10 +20,8 @@ import com.minelittlepony.unicopia.magic.spell.SpellRegistry;
 import com.minelittlepony.unicopia.network.MsgRequestCapabilities;
 import com.minelittlepony.unicopia.util.dummy.DummyClientPlayerEntity;
 import com.mojang.authlib.GameProfile;
-import com.mojang.blaze3d.platform.GlStateManager;
-
 import net.fabricmc.api.ClientModInitializer;
-import net.fabricmc.fabric.api.client.render.ColorProviderRegistry;
+import net.fabricmc.fabric.api.client.rendering.v1.ColorProviderRegistry;
 import net.fabricmc.fabric.api.event.client.ClientTickCallback;
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
@@ -36,7 +33,7 @@ import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.BlockItem;
 import net.minecraft.util.math.BlockPos;
-import net.minecraft.world.ExtendedBlockView;
+import net.minecraft.world.BlockRenderView;
 
 public class UnicopiaClient extends InteractionManager implements ClientModInitializer {
 
@@ -52,6 +49,45 @@ public class UnicopiaClient extends InteractionManager implements ClientModIniti
      */
     private static Race clientPlayerRace = getclientPlayerRace();
 
+    @Override
+    public void onInitializeClient() {
+        clientPlayerRace = getclientPlayerRace();
+        InteractionManager.instance = this;
+
+        ClientTickCallback.EVENT.register(this::tick);
+        ClientReadyCallback.EVENT.register(client -> {
+            Abilities.getInstance().getValues().forEach(keyboard::addKeybind);
+        });
+
+        //BuildInTexturesBakery.getBuiltInTextures().add(new Identifier(Unicopia.MODID, "items/empty_slot_gem"));
+
+        ColorProviderRegistry.ITEM.register((stack, tint) -> {
+            return getLeavesColor(((BlockItem)stack.getItem()).getBlock().getDefaultState(), null, null, tint);
+        }, UItems.apple_leaves);
+        ColorProviderRegistry.BLOCK.register(UnicopiaClient::getLeavesColor, UBlocks.apple_leaves);
+        ColorProviderRegistry.ITEM.register((stack, tint) -> {
+            if (MAGI.test(MinecraftClient.getInstance().player)) {
+                return SpellRegistry.instance().getSpellTintFromStack(stack);
+            }
+            return 0xFFFFFF;
+        }, UItems.spell, UItems.curse);
+    }
+
+    private void tick(MinecraftClient client) {
+        PlayerEntity player = client.player;
+
+        if (player != null && !player.removed) {
+            Race newRace = getclientPlayerRace();
+
+            if (newRace != clientPlayerRace) {
+                clientPlayerRace = newRace;
+
+                Unicopia.getConnection().send(new MsgRequestCapabilities(player, clientPlayerRace), Target.SERVER);
+            }
+        }
+
+        keyboard.onKeyInput();
+    }
     private static Race getclientPlayerRace() {
         if (!Config.getInstance().ignoresMineLittlePony()
                 && MinecraftClient.getInstance().player != null) {
@@ -93,72 +129,7 @@ public class UnicopiaClient extends InteractionManager implements ClientModIniti
         return MinecraftClient.getInstance().options.perspective;
     }
 
-    public void postRenderEntity(Entity entity) {
-        if (entity instanceof PlayerEntity) {
-            Pony iplayer = Pony.of((PlayerEntity)entity);
-
-            if (iplayer.getGravity().getGravitationConstant() < 0) {
-                GlStateManager.translated(0, entity.getDimensions(entity.getPose()).height, 0);
-                GlStateManager.scalef(1, -1, 1);
-                entity.prevPitch *= -1;
-                entity.pitch *= -1;
-            }
-        }
-    }
-
-    public boolean renderEntity(Entity entity, float renderPartialTicks) {
-
-        if (DisguiseRenderer.getInstance().renderDisguise(entity, renderPartialTicks)) {
-            return true;
-        }
-
-        if (entity instanceof PlayerEntity) {
-            Pony iplayer = Pony.of((PlayerEntity)entity);
-
-            if (iplayer.getGravity().getGravitationConstant() < 0) {
-                GlStateManager.scalef(1, -1, 1);
-                GlStateManager.translated(0, -entity.getDimensions(entity.getPose()).height, 0);
-                entity.prevPitch *= -1;
-                entity.pitch *= -1;
-            }
-
-            if (DisguiseRenderer.getInstance().renderDisguiseToGui(iplayer)) {
-                return true;
-            }
-
-            if (iplayer.isInvisible()) {
-                return true;
-            }
-        }
-
-        return false;
-    }
-
-    @Override
-    public void onInitializeClient() {
-        clientPlayerRace = getclientPlayerRace();
-        InteractionManager.instance = this;
-
-        ClientTickCallback.EVENT.register(this::tick);
-        ClientReadyCallback.EVENT.register(client -> {
-            Abilities.getInstance().getValues().forEach(keyboard::addKeybind);
-        });
-
-        //BuildInTexturesBakery.getBuiltInTextures().add(new Identifier(Unicopia.MODID, "items/empty_slot_gem"));
-
-        ColorProviderRegistry.ITEM.register((stack, tint) -> {
-            return getLeavesColor(((BlockItem)stack.getItem()).getBlock().getDefaultState(), null, null, tint);
-        }, UItems.apple_leaves);
-        ColorProviderRegistry.BLOCK.register(UnicopiaClient::getLeavesColor, UBlocks.apple_leaves);
-        ColorProviderRegistry.ITEM.register((stack, tint) -> {
-            if (MAGI.test(MinecraftClient.getInstance().player)) {
-                return SpellRegistry.instance().getSpellTintFromStack(stack);
-            }
-            return 0xFFFFFF;
-        }, UItems.spell, UItems.curse);
-    }
-
-    private static int getLeavesColor(BlockState state, @Nullable ExtendedBlockView world, @Nullable BlockPos pos, int tint) {
+    private static int getLeavesColor(BlockState state, @Nullable BlockRenderView world, @Nullable BlockPos pos, int tint) {
         Block block = state.getBlock();
 
         if (block instanceof Colourful) {
@@ -172,19 +143,4 @@ public class UnicopiaClient extends InteractionManager implements ClientModIniti
         return GrassColors.getColor(0.5D, 1);
     }
 
-    private void tick(MinecraftClient client) {
-        PlayerEntity player = client.player;
-
-        if (player != null && !player.removed) {
-            Race newRace = getclientPlayerRace();
-
-            if (newRace != clientPlayerRace) {
-                clientPlayerRace = newRace;
-
-                Unicopia.getConnection().send(new MsgRequestCapabilities(player, clientPlayerRace), Target.SERVER);
-            }
-        }
-
-        keyboard.onKeyInput();
-    }
 }

src/main/java/com/minelittlepony/unicopia/client/gui/ClientHooks.java

@@ -2,20 +2,16 @@ package com.minelittlepony.unicopia.client.gui;
 
 import com.minelittlepony.unicopia.client.gui.UHud;
 import com.minelittlepony.unicopia.entity.player.Pony;
-import com.mojang.blaze3d.platform.GlStateManager;
-
 import net.minecraft.client.MinecraftClient;
 
 @Deprecated
 // TODO: forge events
 class ClientHooks {
     public static void beforePreRenderHud() {
-        GlStateManager.pushMatrix();
-
         MinecraftClient client = MinecraftClient.getInstance();
 
         if (client.player != null && client.world != null) {
-            UHud.instance.repositionElements(Pony.of(client.player), client.window, true);
+            UHud.instance.repositionElements(Pony.of(client.player), client.getWindow(), true);
         }
     }
 
@@ -24,9 +20,7 @@ class ClientHooks {
         MinecraftClient client = MinecraftClient.getInstance();
 
         if (client.player != null && client.world != null) {
-            UHud.instance.renderHud(Pony.of(client.player), client.window);
+            UHud.instance.renderHud(Pony.of(client.player), client.getWindow());
         }
-
-        GlStateManager.popMatrix();
     }
 }

src/main/java/com/minelittlepony/unicopia/client/particle/ChangelingMagicParticle.java

@@ -5,7 +5,7 @@ import net.fabricmc.api.Environment;
 import net.minecraft.client.particle.Particle;
 import net.minecraft.client.particle.ParticleFactory;
 import net.minecraft.client.particle.SpriteProvider;
-import net.minecraft.particle.DustParticleEffect;
+import net.minecraft.particle.DefaultParticleType;
 import net.minecraft.world.World;
 
 public class ChangelingMagicParticle extends MagicParticle {
@@ -31,7 +31,7 @@ public class ChangelingMagicParticle extends MagicParticle {
     }
 
     @Environment(EnvType.CLIENT)
-    public static class Factory implements ParticleFactory<DustParticleEffect> {
+    public static class Factory implements ParticleFactory<DefaultParticleType> {
         private final SpriteProvider provider;
 
         public Factory(SpriteProvider provider) {
@@ -39,7 +39,7 @@ public class ChangelingMagicParticle extends MagicParticle {
         }
 
         @Override
-        public Particle createParticle(DustParticleEffect effect, World world, double x, double y, double z, double dx, double dy, double dz) {
+        public Particle createParticle(DefaultParticleType effect, World world, double x, double y, double z, double dx, double dy, double dz) {
             MagicParticle particle = new MagicParticle(world, x, y, z, dx, dy, dz);
             particle.setSprite(provider);
             return particle;

src/main/java/com/minelittlepony/unicopia/client/particle/DiskParticle.java

@@ -1,28 +1,28 @@
 package com.minelittlepony.unicopia.client.particle;
 
-import net.minecraft.client.render.BufferBuilder;
+import com.minelittlepony.unicopia.client.render.model.DiskModel;
+
+import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.render.Camera;
-import net.minecraft.particle.ParticleEffect;
+import net.minecraft.client.render.RenderLayer;
+import net.minecraft.client.render.VertexConsumer;
+import net.minecraft.client.render.VertexConsumerProvider;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.world.World;
 
-import org.lwjgl.opengl.GL14;
-
-import com.minelittlepony.unicopia.client.render.DiskModel;
-import com.mojang.blaze3d.platform.GlStateManager;
-
 public class DiskParticle extends SphereParticle {
 
     private static final DiskModel model = new DiskModel();
 
-    protected double rotX;
-    protected double rotY;
-    protected double rotZ;
+    protected float rotX;
+    protected float rotY;
+    protected float rotZ;
 
-    public DiskParticle(ParticleEffect type, World w,
+    public DiskParticle(World w,
             double x, double y, double z,
             float radius,
             int red, int green, int blue, float alpha,
-            double rX, double rY, double rZ) {
+            float rX, float rY, float rZ) {
         super(w, x, y, z, radius, red, green, blue, alpha);
 
         rotX = rX;
@@ -31,17 +31,17 @@ public class DiskParticle extends SphereParticle {
     }
 
     @Override
-    public void buildGeometry(BufferBuilder buffer, Camera viewer, float partialTicks, float x, float z, float yz, float xy, float xz) {
+    public void buildGeometry(VertexConsumer vertexConsumer, Camera camera, float tickDelta) {
         if (alpha <= 0) {
             return;
         }
 
-        GL14.glBlendColor(red, green, blue, alpha);
-
-        model.setPosition(this.x, this.y, this.z);
-        model.render(radius);
-
-        GlStateManager.color4f(1, 1, 1, 1);
+        MatrixStack matrices = new MatrixStack();
+        VertexConsumerProvider.Immediate immediate = MinecraftClient.getInstance().getBufferBuilders().getEntityVertexConsumers();
+        model.setPosition(x, y, z);
+        model.setRotation(rotX, rotY, rotZ);
+        model.render(matrices, radius, immediate.getBuffer(RenderLayer.getTranslucent()), 1, 1, red, green, blue, alpha);
+        immediate.draw();
     }
 }
 

src/main/java/com/minelittlepony/unicopia/client/particle/MagicParticle.java

@@ -1,13 +1,14 @@
 package com.minelittlepony.unicopia.client.particle;
 
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
+
 import net.fabricmc.api.EnvType;
 import net.fabricmc.api.Environment;
+import net.fabricmc.fabric.api.client.particle.v1.FabricSpriteProvider;
 import net.minecraft.client.particle.Particle;
 import net.minecraft.client.particle.ParticleFactory;
 import net.minecraft.client.particle.ParticleTextureSheet;
 import net.minecraft.client.particle.SpriteBillboardParticle;
-import net.minecraft.client.particle.SpriteProvider;
-import net.minecraft.particle.DustParticleEffect;
 import net.minecraft.world.World;
 
 public class MagicParticle extends SpriteBillboardParticle {
@@ -96,16 +97,16 @@ public class MagicParticle extends SpriteBillboardParticle {
     }
 
     @Environment(EnvType.CLIENT)
-    public static class Factory implements ParticleFactory<DustParticleEffect> {
-        private final SpriteProvider provider;
+    public static class Factory implements ParticleFactory<MagicParticleEffect> {
+        private final FabricSpriteProvider provider;
 
-        public Factory(SpriteProvider provider) {
+        public Factory(FabricSpriteProvider provider) {
             this.provider = provider;
         }
 
         @Override
-        public Particle createParticle(DustParticleEffect effect, World world, double x, double y, double z, double dx, double dy, double dz) {
-            MagicParticle particle = effect.getAlpha() > 0 ?
+        public Particle createParticle(MagicParticleEffect effect, World world, double x, double y, double z, double dx, double dy, double dz) {
+            MagicParticle particle = effect.hasTint() ?
                     new MagicParticle(world, x, y, z, dx, dy, dz, effect.getRed(), effect.getGreen(), effect.getBlue())
                      : new MagicParticle(world, x, y, z, dx, dy, dz);
             particle.setSprite(provider);

src/main/java/com/minelittlepony/unicopia/client/particle/SphereParticle.java

@@ -5,20 +5,18 @@ import net.minecraft.client.particle.Particle;
 import net.minecraft.client.particle.ParticleFactory;
 import net.minecraft.client.particle.ParticleTextureSheet;
 import net.minecraft.client.particle.SpriteProvider;
-import net.minecraft.client.render.BufferBuilder;
 import net.minecraft.client.render.Camera;
+import net.minecraft.client.render.RenderLayer;
+import net.minecraft.client.render.VertexConsumer;
+import net.minecraft.client.render.VertexConsumerProvider;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.entity.Entity;
 import net.minecraft.particle.DefaultParticleType;
-import net.minecraft.particle.ParticleEffect;
 import net.minecraft.world.World;
 
-import org.lwjgl.opengl.GL11;
-import org.lwjgl.opengl.GL14;
-
-import com.minelittlepony.unicopia.client.render.SphereModel;
+import com.minelittlepony.unicopia.client.render.model.SphereModel;
 import com.minelittlepony.unicopia.magic.Caster;
-import com.minelittlepony.unicopia.util.particles.ParticleConnection.AttachableParticle;
-import com.mojang.blaze3d.platform.GlStateManager;
+import com.minelittlepony.unicopia.particles.ParticleConnection.AttachableParticle;
 
 public class SphereParticle extends Particle implements AttachableParticle {
 
@@ -33,11 +31,7 @@ public class SphereParticle extends Particle implements AttachableParticle {
 
     private static final SphereModel model = new SphereModel();
 
-    public SphereParticle(ParticleEffect type, World w,
-            double x, double y, double z,
-            float radius,
-            int red, int green, int blue, float alpha,
-            double vX, double vY, double vZ) {
+    public SphereParticle(World w, double x, double y, double z, float radius, int red, int green, int blue, float alpha, double vX, double vY, double vZ) {
         this(w, x, y, z, radius, red, green, blue, alpha);
 
         this.velocityX = vX;
@@ -68,66 +62,6 @@ public class SphereParticle extends Particle implements AttachableParticle {
         this.caster = caster;
     }
 
-    @Override
-    public ParticleTextureSheet getType() {
-        // TODO Auto-generated method stub
-        return null;
-    }
-
-    @Override
-    public void tick() {
-        super.tick();
-
-        if (caster != null) {
-            if (!caster.hasEffect() || caster.getEffect().isDead() || caster.getEntity().removed) {
-                markDead();
-            } else {
-                Entity e = caster.getEntity();
-
-                if (caster.getWorld().getEntityById(e.getEntityId()) == null) {
-                    markDead();
-                }
-
-                setPos(e.x, e.y, e.z);
-            }
-        } else {
-            radius *= 0.9998281;
-        }
-    }
-
-    @Override
-    public void buildGeometry(BufferBuilder buffer, Camera viewer, float partialTicks, float x, float z, float yz, float xy, float xz) {
-        if (alpha <= 0 || radius <= 0) {
-            return;
-        }
-
-        GL11.glPushAttrib(GL11.GL_ALL_ATTRIB_BITS);
-        GlStateManager.depthMask(false);
-        GlStateManager.shadeModel(GL11.GL_SMOOTH);
-
-        GlStateManager.enableAlphaTest();
-        GlStateManager.enableBlend();
-        MinecraftClient.getInstance().gameRenderer.disableLightmap();
-        GlStateManager.enableLighting();
-
-        GL14.glBlendColor(red, green, blue, alpha);
-
-        GlStateManager.blendFunc(GlStateManager.SourceFactor.SRC_COLOR, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA);
-        GlStateManager.disableTexture();
-
-        model.setPosition(this.x, this.y, this.z);
-        model.render(radius);
-
-        GlStateManager.enableTexture();
-        GlStateManager.disableLighting();
-        MinecraftClient.getInstance().gameRenderer.enableLightmap();
-
-        GlStateManager.disableBlend();
-        GlStateManager.depthMask(true);
-        GlStateManager.color4f(1, 1, 1, 1);
-        GL11.glPopAttrib();
-    }
-
     @Override
     public void setAttribute(int key, Object value) {
         if (key == 0) {
@@ -147,6 +81,45 @@ public class SphereParticle extends Particle implements AttachableParticle {
         }
     }
 
+    @Override
+    public ParticleTextureSheet getType() {
+        return ParticleTextureSheet.CUSTOM;
+    }
+
+    @Override
+    public void tick() {
+        super.tick();
+
+        if (caster != null) {
+            if (!caster.hasEffect() || caster.getEffect().isDead() || caster.getEntity().removed) {
+                markDead();
+            } else {
+                Entity e = caster.getEntity();
+
+                if (caster.getWorld().getEntityById(e.getEntityId()) == null) {
+                    markDead();
+                }
+
+                setPos(e.getX(), e.getY(), e.getZ());
+            }
+        } else {
+            radius *= 0.9998281;
+        }
+    }
+
+    @Override
+    public void buildGeometry(VertexConsumer vertexConsumer, Camera camera, float tickDelta) {
+        if (alpha <= 0 || radius <= 0) {
+            return;
+        }
+
+        MatrixStack matrices = new MatrixStack();
+        VertexConsumerProvider.Immediate immediate = MinecraftClient.getInstance().getBufferBuilders().getEntityVertexConsumers();
+        model.setPosition(x, y, z);
+        model.render(matrices, radius, immediate.getBuffer(RenderLayer.getTranslucent()), 1, 1, red, green, blue, alpha);
+        immediate.draw();
+    }
+
     public static class Factory implements ParticleFactory<DefaultParticleType> {
         private final SpriteProvider provider;
 
@@ -155,7 +128,7 @@ public class SphereParticle extends Particle implements AttachableParticle {
         }
 
         @Override
-        public Particle createParticle(DefaultParticleType defaultParticleType_1, World world, double x, double y, double z, double dx, double dy, double dz) {
+        public Particle createParticle(DefaultParticleType type, World world, double x, double y, double z, double dx, double dy, double dz) {
             RaindropsParticle particle = new RaindropsParticle(world, x, y, z, dx, dy, dz);
             particle.setSprite(provider);
             return particle;

src/main/java/com/minelittlepony/unicopia/client/render/ButterflyEntityRenderer.java

@@ -2,11 +2,11 @@ package com.minelittlepony.unicopia.client.render;
 
 import com.minelittlepony.unicopia.client.render.model.ButterflyEntityModel;
 import com.minelittlepony.unicopia.entity.ButterflyEntity;
-import com.mojang.blaze3d.platform.GlStateManager;
 
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
 import net.minecraft.client.render.entity.EntityRenderDispatcher;
 import net.minecraft.client.render.entity.LivingEntityRenderer;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.util.Identifier;
 import net.minecraft.util.math.MathHelper;
 
@@ -17,22 +17,22 @@ public class ButterflyEntityRenderer extends LivingEntityRenderer<ButterflyEntit
     }
 
     @Override
-    protected Identifier getTexture(ButterflyEntity entity) {
+    public Identifier getTexture(ButterflyEntity entity) {
         return entity.getVariety().getSkin();
     }
 
     @Override
-    protected void scale(ButterflyEntity entity, float ticks) {
-        GlStateManager.scalef(0.35F, 0.35F, 0.35F);
+    protected void scale(ButterflyEntity entity, MatrixStack matrixStack, float ticks) {
+        matrixStack.scale(0.35F, 0.35F, 0.35F);
     }
 
     @Override
-    protected void setupTransforms(ButterflyEntity entity, float age, float yaw, float ticks) {
+    protected void setupTransforms(ButterflyEntity entity, MatrixStack matrixStack, float age, float yaw, float ticks) {
 
         if (!entity.isResting()) {
-            GlStateManager.translated(0, MathHelper.cos(age / 3F) / 10F, 0);
+            matrixStack.translate(0, MathHelper.cos(age / 3F) / 10F, 0);
         }
 
-        super.setupTransforms(entity, age, yaw, ticks);
+        super.setupTransforms(entity, matrixStack, age, yaw, ticks);
     }
 }

src/main/java/com/minelittlepony/unicopia/client/render/CloudEntityRenderer.java

@@ -1,8 +1,10 @@
 package com.minelittlepony.unicopia.client.render;
 
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
+import net.minecraft.client.render.VertexConsumerProvider;
 import net.minecraft.client.render.entity.EntityRenderDispatcher;
 import net.minecraft.client.render.entity.LivingEntityRenderer;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.util.Identifier;
 
 import org.lwjgl.opengl.GL11;
@@ -21,18 +23,18 @@ public class CloudEntityRenderer extends LivingEntityRenderer<CloudEntity, Cloud
     }
 
     @Override
-    public void scale(CloudEntity entity, float par2) {
+    public void scale(CloudEntity entity, MatrixStack matrixStack, float par2) {
         float scale = entity.getCloudSize();
 
-        GL11.glScalef(scale, scale, scale);
+        matrixStack.scale(scale, scale, scale);
     }
 
     @Override
-    protected void render(CloudEntity entity, float limbSwing, float limbSwingAmount, float ageInTicks, float netHeadYaw, float headPitch, float scaleFactor) {
+    public void render(CloudEntity entity, float f, float g, MatrixStack matrixStack, VertexConsumerProvider vertexConsumerProvider, int i) {
 
         if (!entity.removed) {
-            GlStateManager.pushMatrix();
-            GlStateManager.translatef(0, -entity.getHeight()/entity.getCloudSize() + 0.3F, 0);
+            matrixStack.push();
+            matrixStack.translate(0, -entity.getHeight()/entity.getCloudSize() + 0.3F, 0);
 
             GlStateManager.disableLighting();
             GlStateManager.enableBlend();
@@ -43,18 +45,18 @@ public class CloudEntityRenderer extends LivingEntityRenderer<CloudEntity, Cloud
 
             GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
 
-            super.render(entity, limbSwing, limbSwingAmount, ageInTicks, netHeadYaw, headPitch, scaleFactor);
+            super.render(entity, f, g, matrixStack, vertexConsumerProvider, i);
 
             GlStateManager.disableBlend();
             GlStateManager.enableLighting();
             GlStateManager.color4f(1, 1, 1, 1);
 
-            GlStateManager.popMatrix();
+            matrixStack.pop();
         }
     }
 
     @Override
-    protected Identifier getTexture(CloudEntity entity) {
+    public Identifier getTexture(CloudEntity entity) {
         if (entity.getIsRaining() && entity.getIsThundering()) {
             return rainCloud;
         }

src/main/java/com/minelittlepony/unicopia/client/render/CuccoonEntityRenderer.java

@@ -4,12 +4,14 @@ import com.minelittlepony.unicopia.InteractionManager;
 import com.minelittlepony.unicopia.Unicopia;
 import com.minelittlepony.unicopia.client.render.model.CuccoonEntityModel;
 import com.minelittlepony.unicopia.entity.CuccoonEntity;
-import com.mojang.blaze3d.platform.GlStateManager;
+import com.mojang.blaze3d.systems.RenderSystem;
 
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
 import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.render.VertexConsumerProvider;
 import net.minecraft.client.render.entity.EntityRenderDispatcher;
 import net.minecraft.client.render.entity.LivingEntityRenderer;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.entity.Entity;
 import net.minecraft.util.Identifier;
 
@@ -22,7 +24,7 @@ public class CuccoonEntityRenderer extends LivingEntityRenderer<CuccoonEntity, C
     }
 
     @Override
-    protected Identifier getTexture(CuccoonEntity entity) {
+    public Identifier getTexture(CuccoonEntity entity) {
         return TEXTURE;
     }
 
@@ -32,22 +34,21 @@ public class CuccoonEntityRenderer extends LivingEntityRenderer<CuccoonEntity, C
     }
 
     @Override
-    public void render(CuccoonEntity entity, double x, double y, double z, float entityYaw, float partialTicks) {
-
+    public void render(CuccoonEntity entity, float yaw, float tickDelta, MatrixStack matrices, VertexConsumerProvider vertices, int light) {
         if (entity.hasPassengers()) {
             Entity rider = entity.getPrimaryPassenger();
 
             if (!(rider == MinecraftClient.getInstance().player) || InteractionManager.instance().getViewMode() != 0) {
-                GlStateManager.enableAlphaTest();
-                GlStateManager.enableBlend();
+                RenderSystem.enableAlphaTest();
+                RenderSystem.enableBlend();
 
-                renderManager.render(rider, x, y + rider.getMountedHeightOffset(), z, entityYaw, partialTicks, true);
+                renderManager.render(rider, rider.getX(), rider.getY() + rider.getMountedHeightOffset(), rider.getZ(), rider.yaw, tickDelta, matrices, vertices, light);
 
-                GlStateManager.disableBlend();
-                GlStateManager.disableAlphaTest();
+                RenderSystem.disableBlend();
+                RenderSystem.disableAlphaTest();
             }
         }
 
-        super.render(entity, x, y, z, entityYaw, partialTicks);
+        super.render(entity, yaw, tickDelta, matrices, vertices, light);
     }
 }

src/main/java/com/minelittlepony/unicopia/client/render/DisguiseRenderer.java

@@ -1,83 +0,0 @@
-package com.minelittlepony.unicopia.client.render;
-
-import com.minelittlepony.unicopia.entity.player.Pony;
-import com.minelittlepony.unicopia.magic.spell.DisguiseSpell;
-
-import net.minecraft.client.MinecraftClient;
-import net.minecraft.client.render.entity.EntityRenderDispatcher;
-import net.minecraft.entity.Entity;
-
-public class DisguiseRenderer {
-
-    private static final DisguiseRenderer INSTANCE = new DisguiseRenderer();
-
-    public static DisguiseRenderer getInstance() {
-        return INSTANCE;
-    }
-
-    private final MinecraftClient mc = MinecraftClient.getInstance();
-
-    private boolean rendering;
-
-    public boolean renderDisguise(Entity entity, float usedPartialTick) {
-
-        EntityRenderDispatcher renderMan = mc.getEntityRenderManager();
-
-        if (rendering) {
-            renderMan.setRenderShadows(true);
-            renderStaticDisguise(renderMan, entity);
-            renderMan.setRenderShadows(false);
-
-            return true;
-        } else {
-            renderMan.setRenderShadows(renderMan.shouldRenderShadows() || usedPartialTick != 1);
-        }
-
-        return false;
-    }
-
-    protected void renderStaticDisguise(EntityRenderDispatcher renderMan, Entity entity) {
-        Entity observer = mc.getCameraEntity();
-
-        double x = entity.x - observer.x;
-        double y = entity.y - observer.y;
-        double z = entity.z - observer.z;
-
-        renderDisguise(renderMan, entity, x, y, z);
-    }
-
-    public boolean renderDisguiseToGui(Pony player) {
-        DisguiseSpell effect = player.getEffect(DisguiseSpell.class, false);
-
-        if (effect == null || effect.isDead()) {
-            return false;
-        }
-
-        EntityRenderDispatcher renderMan = mc.getEntityRenderManager();
-
-        if (renderMan.shouldRenderShadows()) {
-            return false;
-        }
-
-        Entity e = effect.getDisguise();
-
-        // Check for a disguise and render it in our place.
-        if (e != null) {
-            effect.update(player);
-
-            e.setCustomNameVisible(false);
-            e.setInvisible(false);
-            e.y = player.getOwner().y;
-
-            renderDisguise(renderMan, e, 0, 0, 0);
-        }
-
-        return true;
-    }
-
-    protected void renderDisguise(EntityRenderDispatcher renderMan, Entity entity, double x, double y, double z) {
-        rendering = false;
-        renderMan.render(entity, x, y, z, 0, 1, false);
-        rendering = true;
-    }
-}

src/main/java/com/minelittlepony/unicopia/client/render/DiskModel.java

@@ -1,14 +0,0 @@
-package com.minelittlepony.unicopia.client.render;
-
-public class DiskModel extends SphereModel {
-
-    @Override
-    protected void drawShape() {
-       /* Disk sphere = new Disk();
-
-        sphere.setDrawStyle(GLU.GLU_FILL);
-        sphere.setNormals(GL.GLU_SMOOTH);
-        sphere.draw(0, 1, 32, 32);*/
-        // TODO: GLU Disk
-    }
-}

src/main/java/com/minelittlepony/unicopia/client/render/ModelQuads.java

@@ -1,32 +0,0 @@
-package com.minelittlepony.unicopia.client.render;
-
-import java.util.ArrayList;
-import java.util.List;
-
-import net.minecraft.client.model.Box;
-import net.minecraft.client.model.Cuboid;
-import net.minecraft.client.model.Quad;
-import net.minecraft.client.model.Vertex;
-import net.minecraft.client.render.BufferBuilder;
-
-public class ModelQuads extends Box {
-
-    public ModelQuads(Cuboid renderer) {
-        super(renderer, 0, 0, 0, 0, 0, 0, 0, 0, 0);
-    }
-
-    protected List<Quad> quadList = new ArrayList<>();
-
-    public ModelQuads addFace(Vertex... vertices) {
-        quadList.add(new TexturedShape2d(vertices));
-
-        return this;
-    }
-
-    @Override
-    public void render(BufferBuilder renderer, float scale) {
-        for (Quad i : quadList) {
-            i.render(renderer, scale);
-        }
-    }
-}

src/main/java/com/minelittlepony/unicopia/client/render/RainbowEntityRenderer.java

@@ -4,9 +4,11 @@ import org.lwjgl.opengl.GL11;
 
 import com.minelittlepony.unicopia.entity.RainbowEntity;
 import com.minelittlepony.unicopia.util.WorldHelper;
-import com.mojang.blaze3d.platform.GlStateManager;
+import com.mojang.blaze3d.platform.GlStateManager.DstFactor;
+import com.mojang.blaze3d.platform.GlStateManager.SrcFactor;
+import com.mojang.blaze3d.systems.RenderSystem;
 
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.render.BufferBuilder;
 import net.minecraft.client.render.Tessellator;
@@ -23,7 +25,12 @@ public class RainbowEntityRenderer extends EntityRenderer<RainbowEntity> {
 
     private static final Identifier TEXTURE = new Identifier("unicopia", "textures/environment/rainbow.png");
 
-    public void doRender(RainbowEntity entity, double x, double y, double z, float entityYaw, float partialTicks) {
+    @Override
+    public Identifier getTexture(RainbowEntity entity) {
+        return TEXTURE;
+    }
+
+    public void render(RainbowEntity entity, double x, double y, double z, float entityYaw, float partialTicks) {
         float distance = MinecraftClient.getInstance().getCameraEntity().distanceTo(entity);
         float maxDistance = 16 * MinecraftClient.getInstance().options.viewDistance;
         double r = entity.getRadius();
@@ -37,39 +44,31 @@ public class RainbowEntityRenderer extends EntityRenderer<RainbowEntity> {
             return;
         }
 
-        bindEntityTexture(entity);
+        RenderSystem.pushMatrix();
+        RenderSystem.disableLighting();
+        RenderSystem.disableCull();
+        RenderSystem.enableBlend();
+        RenderSystem.blendFunc(SrcFactor.SRC_ALPHA, DstFactor.ONE_MINUS_SRC_ALPHA);
 
-        GlStateManager.pushMatrix();
-        GlStateManager.disableLighting();
-        GlStateManager.disableCull();
-        GlStateManager.enableBlend();
-        GlStateManager.blendFunc(GlStateManager.SourceFactor.SRC_ALPHA, GlStateManager.DestFactor.ONE_MINUS_SRC_ALPHA);
+        RenderSystem.translated(x, y, z);
+        RenderSystem.rotatef(entityYaw, 0, 1, 0);
 
-        GlStateManager.translated(x, y, z);
-        GlStateManager.rotatef(entityYaw, 0, 1, 0);
-
-        GlStateManager.color4f(1, 1, 1, opacity);
+        RenderSystem.color4f(1, 1, 1, opacity);
 
         Tessellator tessellator = Tessellator.getInstance();
-        BufferBuilder bufferbuilder = tessellator.getBufferBuilder();
+        BufferBuilder bufferbuilder = tessellator.getBuffer();
 
-        bufferbuilder.begin(GL11.GL_QUADS, VertexFormats.POSITION_UV);
-        bufferbuilder.vertex(-r, r, 0).texture(1, 0).end();
-        bufferbuilder.vertex( r, r, 0).texture(0, 0).end();
-        bufferbuilder.vertex( r, 0, 0).texture(0, 1).end();
-        bufferbuilder.vertex(-r, 0, 0).texture(1, 1).end();
+        bufferbuilder.begin(GL11.GL_QUADS, VertexFormats.POSITION_TEXTURE);
+        bufferbuilder.vertex(-r, r, 0).texture(1, 0).next();
+        bufferbuilder.vertex( r, r, 0).texture(0, 0).next();
+        bufferbuilder.vertex( r, 0, 0).texture(0, 1).next();
+        bufferbuilder.vertex(-r, 0, 0).texture(1, 1).next();
 
         tessellator.draw();
 
-        GlStateManager.disableBlend();
-        GlStateManager.enableCull();
-        GlStateManager.enableLighting();
-        GlStateManager.popMatrix();
+        RenderSystem.disableBlend();
+        RenderSystem.enableCull();
+        RenderSystem.enableLighting();
+        RenderSystem.popMatrix();
     }
-
-    @Override
-    protected Identifier getTexture(RainbowEntity entity) {
-        return TEXTURE;
-    }
-
 }

src/main/java/com/minelittlepony/unicopia/client/render/RenderSpellbook.java

@@ -1,78 +0,0 @@
-package com.minelittlepony.unicopia.client.render;
-
-import com.minelittlepony.unicopia.client.render.model.SpellbookModel;
-import com.minelittlepony.unicopia.entity.SpellbookEntity;
-import com.mojang.blaze3d.platform.GlStateManager;
-
-import net.minecraft.util.math.MathHelper;
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
-import net.minecraft.client.render.entity.EntityRenderDispatcher;
-import net.minecraft.client.render.entity.LivingEntityRenderer;
-import net.minecraft.util.Identifier;
-
-public class RenderSpellbook extends LivingEntityRenderer<SpellbookEntity, SpellbookModel> {
-
-    private static final Identifier BLUE = new Identifier("unicopia", "textures/entity/enchanting_table_book_blue.png");
-    private static final Identifier NORMAL = new Identifier("unicopia", "textures/entity/enchanting_table_book.png");
-
-    public RenderSpellbook(EntityRenderDispatcher manager, EntityRendererRegistry.Context context) {
-        super(manager, new SpellbookModel(), 0);
-    }
-
-    @Override
-    protected Identifier getTexture(SpellbookEntity entity) {
-        return entity.getIsAltered() ? BLUE : NORMAL;
-    }
-
-    @Override
-    protected float getLyingAngle(SpellbookEntity entity) {
-        return 0;
-    }
-
-    @Override
-    protected void render(SpellbookEntity entity, float time, float walkSpeed, float stutter, float yaw, float pitch, float increment) {
-
-        float breath = MathHelper.sin((entity.age + stutter) / 20) * 0.01F + 0.1F;
-
-        float first_page_rot = walkSpeed + (breath * 10);
-        float second_page_rot = 1 - first_page_rot;
-        float open_angle = 0.9f - walkSpeed;
-
-        if (first_page_rot > 1) first_page_rot = 1;
-        if (second_page_rot > 1) second_page_rot = 1;
-
-        if (!entity.getIsOpen()) {
-            GlStateManager.translatef(0, 1.44f, 0);
-        } else {
-            GlStateManager.translatef(0, 1.2f + breath, 0);
-        }
-        GlStateManager.pushMatrix();
-
-        if (!entity.getIsOpen()) {
-            first_page_rot = second_page_rot = open_angle = 0;
-            GlStateManager.rotatef(90.0F, 1.0F, 0.0F, 0.0F);
-            GlStateManager.rotatef(90.0F, 0.0F, 0.0F, 1.0F);
-            GlStateManager.translatef(-0.25f, 0, 0);
-        } else {
-            GlStateManager.rotatef(-60.0F, 0.0F, 0.0F, 1.0F);
-        }
-
-        GlStateManager.enableCull();
-        super.render(entity, 0, first_page_rot, second_page_rot, open_angle, 0, 0.0625F);
-
-        GlStateManager.popMatrix();
-    }
-
-    @Override
-    protected void setupTransforms(SpellbookEntity entity, float p_77043_2_, float p_77043_3_, float partialTicks) {
-        GlStateManager.rotatef(-MathHelper.lerp(entity.prevYaw, entity.yaw, partialTicks), 0, 1, 0);
-    }
-
-    @Override
-    protected boolean hasLabel(SpellbookEntity targetEntity) {
-        return super.hasLabel(targetEntity)
-                && (targetEntity.isCustomNameVisible()
-                        || targetEntity.hasCustomName()
-                        && targetEntity == renderManager.targetedEntity);
-    }
-}

src/main/java/com/minelittlepony/unicopia/client/render/SpearEntityRenderer.java

@@ -3,7 +3,7 @@ package com.minelittlepony.unicopia.client.render;
 import com.minelittlepony.unicopia.Unicopia;
 import com.minelittlepony.unicopia.entity.SpearEntity;
 
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
 import net.minecraft.client.render.entity.EntityRenderDispatcher;
 import net.minecraft.client.render.entity.ProjectileEntityRenderer;
 import net.minecraft.util.Identifier;
@@ -16,7 +16,7 @@ public class SpearEntityRenderer extends ProjectileEntityRenderer<SpearEntity> {
     }
 
     @Override
-    protected Identifier getTexture(SpearEntity entity) {
+    public Identifier getTexture(SpearEntity entity) {
         return TEXTURE;
     }
 }

src/main/java/com/minelittlepony/unicopia/client/render/SpellbookEntityRender.java

@@ -0,0 +1,59 @@
+package com.minelittlepony.unicopia.client.render;
+
+import com.minelittlepony.unicopia.client.render.model.SpellbookModel;
+import com.minelittlepony.unicopia.entity.SpellbookEntity;
+import net.minecraft.util.math.MathHelper;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
+import net.minecraft.client.render.entity.EntityRenderDispatcher;
+import net.minecraft.client.render.entity.LivingEntityRenderer;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.client.util.math.Vector3f;
+import net.minecraft.util.Identifier;
+
+public class SpellbookEntityRender extends LivingEntityRenderer<SpellbookEntity, SpellbookModel> {
+
+    private static final Identifier BLUE = new Identifier("unicopia", "textures/entity/enchanting_table_book_blue.png");
+    private static final Identifier NORMAL = new Identifier("unicopia", "textures/entity/enchanting_table_book.png");
+
+    public SpellbookEntityRender(EntityRenderDispatcher manager, EntityRendererRegistry.Context context) {
+        super(manager, new SpellbookModel(), 0);
+    }
+
+    @Override
+    public Identifier getTexture(SpellbookEntity entity) {
+        return entity.getIsAltered() ? BLUE : NORMAL;
+    }
+
+    @Override
+    protected float getLyingAngle(SpellbookEntity entity) {
+        return 0;
+    }
+
+    @Override
+    protected void setupTransforms(SpellbookEntity entity, MatrixStack matrices, float p_77043_2_, float p_77043_3_, float partialTicks) {
+
+        if (!entity.getIsOpen()) {
+            matrices.translate(0, 1.44f, 0);
+        } else {
+            matrices.translate(0, 1.2f + MathHelper.sin((entity.age + partialTicks) / 20) * 0.01F + 0.1F, 0);
+        }
+
+        if (!entity.getIsOpen()) {
+            matrices.multiply(Vector3f.POSITIVE_X.getDegreesQuaternion(90));
+            matrices.multiply(Vector3f.POSITIVE_Z.getDegreesQuaternion(90));
+            matrices.translate(-0.25f, 0, 0);
+        } else {
+            matrices.multiply(Vector3f.NEGATIVE_Z.getDegreesQuaternion(60));
+        }
+
+        matrices.multiply(Vector3f.NEGATIVE_Y.getDegreesQuaternion(MathHelper.lerp(entity.prevYaw, entity.yaw, partialTicks)));
+    }
+
+    @Override
+    protected boolean hasLabel(SpellbookEntity targetEntity) {
+        return super.hasLabel(targetEntity)
+                && (targetEntity.isCustomNameVisible()
+                        || targetEntity.hasCustomName()
+                        && targetEntity == renderManager.targetedEntity);
+    }
+}

src/main/java/com/minelittlepony/unicopia/client/render/SpellcastEntityRenderer.java

@@ -2,39 +2,86 @@ package com.minelittlepony.unicopia.client.render;
 
 import com.minelittlepony.unicopia.client.render.model.GemEntityModel;
 import com.minelittlepony.unicopia.entity.SpellcastEntity;
+import com.mojang.blaze3d.platform.GlStateManager;
 
-import net.fabricmc.fabric.api.client.render.EntityRendererRegistry;
-import net.minecraft.client.render.VisibleRegion;
+import net.fabricmc.fabric.api.client.rendereregistry.v1.EntityRendererRegistry;
+import net.minecraft.client.render.Frustum;
+import net.minecraft.client.render.VertexConsumerProvider;
 import net.minecraft.client.render.entity.EntityRenderDispatcher;
 import net.minecraft.client.render.entity.LivingEntityRenderer;
+import net.minecraft.client.render.entity.feature.FeatureRenderer;
+import net.minecraft.client.render.entity.feature.FeatureRendererContext;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.util.Identifier;
 
 public class SpellcastEntityRenderer extends LivingEntityRenderer<SpellcastEntity, GemEntityModel> {
 
-    private static final Identifier gem = new Identifier("unicopia", "textures/entity/gem.png");
+    private static final Identifier TEXTURE = new Identifier("unicopia", "textures/entity/gem.png");
 
     public SpellcastEntityRenderer(EntityRenderDispatcher manager, EntityRendererRegistry.Context context) {
         super(manager, new GemEntityModel(), 0);
+        addFeature(new TierFeature(this));
     }
 
     @Override
-    protected Identifier getTexture(SpellcastEntity entity) {
-        return gem;
+    public Identifier getTexture(SpellcastEntity entity) {
+        return TEXTURE;
     }
 
     @Override
-    public boolean isVisible(SpellcastEntity livingEntity, VisibleRegion camera, double camX, double camY, double camZ) {
+    public boolean shouldRender(SpellcastEntity entity, Frustum visibleRegion, double cameraX, double cameraY, double cameraZ) {
         return true;
     }
 
     @Override
     protected float getLyingAngle(SpellcastEntity entity) {
+
         return 0;
     }
 
+    @Override
+    public void render(SpellcastEntity livingEntity, float f, float g, MatrixStack matrixStack, VertexConsumerProvider vertexConsumerProvider, int i) {
+        super.render(livingEntity, f, g, matrixStack, vertexConsumerProvider, i);
+    }
+
     @Override
     protected boolean hasLabel(SpellcastEntity targetEntity) {
         return super.hasLabel(targetEntity) && (targetEntity.isCustomNameVisible()
                  || targetEntity.hasCustomName() && targetEntity == renderManager.targetedEntity);
     }
+
+    class TierFeature extends FeatureRenderer<SpellcastEntity, GemEntityModel> {
+
+        public TierFeature(FeatureRendererContext<SpellcastEntity, GemEntityModel> context) {
+            super(context);
+        }
+
+        @Override
+        public void render(MatrixStack matrices, VertexConsumerProvider vertexConsumers, int light, SpellcastEntity entity, float limbAngle, float limbDistance, float tickDelta, float customAngle, float headYaw, float headPitch) {
+
+            int tiers = Math.min(entity.getCurrentLevel(), 5);
+
+            for (int i = 0; i <= tiers; i++) {
+                float grow = (1 + i) * 0.2F;
+
+                matrices.scale(1 + grow, 1 + grow, 1 + grow);
+                matrices.translate(0, -grow, 0);
+
+                if (i == 5) {
+                    matrices.push();
+                    matrices.translate(0.6F, 0.8F, 0);
+                    matrices.scale(0.4F, 0.4F, 0.4F);
+                    FeatureRenderer.render(model, model, TEXTURE, matrices, vertexConsumers, light, entity, limbAngle, limbDistance, entity.age, headYaw, headPitch, 1, 1, 1, 1);
+                    matrices.pop();
+                }
+            }
+
+            for (int i = entity.getCurrentLevel(); i > 0; i--) {
+                matrices.push();
+                GlStateManager.translatef(0.6F, 0, 0);
+                FeatureRenderer.render(model, model, TEXTURE, matrices, vertexConsumers, light, entity, limbAngle, limbDistance, entity.age, headYaw, headPitch, 1, 1, 1, 1);
+                matrices.pop();
+            }
+        }
+    }
 }

src/main/java/com/minelittlepony/unicopia/client/render/SphereModel.java

@@ -1,87 +0,0 @@
-package com.minelittlepony.unicopia.client.render;
-
-import org.lwjgl.opengl.GL11;
-
-import com.mojang.blaze3d.platform.GlStateManager;
-
-import net.minecraft.client.render.block.entity.BlockEntityRenderDispatcher;
-import net.minecraft.client.util.GlAllocationUtils;
-
-public class SphereModel {
-
-    private int displayList;
-    private boolean baked;
-
-    protected double posX;
-    protected double posY;
-    protected double posZ;
-
-    protected float rotX;
-    protected float rotY;
-    protected float rotZ;
-
-    public void setPosition(double x, double y, double z) {
-        posX = x - BlockEntityRenderDispatcher.renderOffsetX;
-        posY = y - BlockEntityRenderDispatcher.renderOffsetY;
-        posZ = z - BlockEntityRenderDispatcher.renderOffsetZ;
-    }
-
-    public void setRotation(float x, float y, float z) {
-        rotX = x;
-        rotY = y;
-        rotZ = z;
-    }
-
-    public void render(float scale) {
-        if (scale == 0) {
-            return;
-        }
-
-        if (!baked) {
-            baked = true;
-            bake();
-        }
-
-        GlStateManager.pushMatrix();
-
-        if (posX != 0 && posY != 9 && posZ != 0) {
-            GlStateManager.translated(posX, posY, posZ);
-        }
-
-        glRotate(rotX, 1, 0, 0);
-        glRotate(rotY, 0, 1, 0);
-        glRotate(rotZ, 0, 0, 1);
-
-        GlStateManager.scalef(scale, scale, scale);
-
-        GlStateManager.callList(displayList);
-
-        GlStateManager.popMatrix();
-    }
-
-    private void bake() {
-        displayList = GlAllocationUtils.genLists(1);
-        GlStateManager.newList(displayList, GL11.GL_COMPILE);
-
-        drawShape();
-
-        GlStateManager.endList();
-    }
-
-    protected void drawShape() {
-
-        /*Sphere sphere = new Sphere();
-
-        sphere.setDrawStyle(GLU.GLU_FILL);
-        sphere.setNormals(GLU.GLU_SMOOTH);
-        sphere.draw(1, 32, 32);*/
-        // TODO: GLU Sphere
-    }
-
-    static void glRotate(float angle, float x, float y, float z) {
-        if (angle != 0) {
-            GlStateManager.rotatef(angle, x, y, z);
-        }
-    }
-
-}

src/main/java/com/minelittlepony/unicopia/client/render/TexturedShape2d.java

@@ -1,55 +0,0 @@
-package com.minelittlepony.unicopia.client.render;
-
-import net.minecraft.client.model.Quad;
-import net.minecraft.client.model.Vertex;
-import net.minecraft.client.render.BufferBuilder;
-import net.minecraft.client.render.Tessellator;
-import net.minecraft.client.render.VertexFormats;
-import net.minecraft.util.math.Vec3d;
-
-public class TexturedShape2d extends Quad {
-
-    protected boolean invertNormal;
-
-    public TexturedShape2d(Vertex... vertices) {
-        super(vertices);
-    }
-
-    public TexturedShape2d(Vertex[] vertices, int texcoordU1, int texcoordV1, int texcoordU2, int texcoordV2, float textureWidth, float textureHeight) {
-        super(vertices, texcoordU1, texcoordV1, texcoordU2, texcoordV2, textureWidth, textureHeight);
-    }
-
-    public TexturedShape2d setInvertNormal() {
-        invertNormal = true;
-        return this;
-    }
-
-    @Override
-    public void render(BufferBuilder renderer, float scale) {
-        Vec3d vec3d = vertices[1].pos.reverseSubtract(vertices[0].pos);
-        Vec3d vec3d1 = vertices[1].pos.reverseSubtract(vertices[2].pos);
-        Vec3d vec3d2 = vec3d1.crossProduct(vec3d).normalize();
-        float f = (float)vec3d2.x;
-        float f1 = (float)vec3d2.y;
-        float f2 = (float)vec3d2.z;
-
-        if (invertNormal) {
-            f = -f;
-            f1 = -f1;
-            f2 = -f2;
-        }
-
-        renderer.begin(7, VertexFormats.POSITION_UV_NORMAL);
-
-        for (int i = 0; i < vertexCount; ++i) {
-            Vertex positiontexturevertex = vertices[i];
-            renderer
-                .vertex(positiontexturevertex.pos.x * scale, positiontexturevertex.pos.y * scale, positiontexturevertex.pos.z * scale)
-                .texture(positiontexturevertex.u, positiontexturevertex.v)
-                .normal(f, f1, f2)
-                .end();
-        }
-
-        Tessellator.getInstance().draw();
-    }
-}

src/main/java/com/minelittlepony/unicopia/client/render/model/ButterflyEntityModel.java

@@ -1,73 +1,70 @@
 package com.minelittlepony.unicopia.client.render.model;
 
 import com.minelittlepony.unicopia.entity.ButterflyEntity;
-import com.mojang.blaze3d.platform.GlStateManager;
+import com.mojang.blaze3d.systems.RenderSystem;
 
-import net.minecraft.client.model.Cuboid;
+import net.minecraft.client.model.ModelPart;
+import net.minecraft.client.render.VertexConsumer;
 import net.minecraft.client.render.entity.model.EntityModel;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.util.math.MathHelper;
 
 public class ButterflyEntityModel extends EntityModel<ButterflyEntity> {
 
-    private Cuboid body;
+    private ModelPart body;
 
-    private Cuboid leftWingInner;
-    private Cuboid leftWingOuter;
+    private ModelPart leftWingInner;
+    private ModelPart leftWingOuter;
 
-    private Cuboid rightWingInner;
-    private Cuboid rightWingOuter;
+    private ModelPart rightWingInner;
+    private ModelPart rightWingOuter;
 
     public ButterflyEntityModel() {
         textureWidth = 64;
         textureHeight = 64;
 
-        body = new Cuboid(this, 0, 0);
-        body.rotationPointZ = -10;
-        body.rotationPointY = 12;
+        body = new ModelPart(this, 0, 0);
+        body.pivotX = -10;
+        body.pivotY = 12;
 
-        rightWingInner = new Cuboid(this, 42, 0);
+        rightWingInner = new ModelPart(this, 42, 0);
         rightWingInner.roll = -0.2F;
-        rightWingInner.addBox(-13, -5, 0, 10, 19, 1);
+        rightWingInner.addCuboid(-13, -5, 0, 10, 19, 1);
 
         body.addChild(rightWingInner);
 
-        rightWingOuter = new Cuboid(this, 24, 16);
-        rightWingOuter.setRotationPoint(-13, 10, 0.1F);
+        rightWingOuter = new ModelPart(this, 24, 16);
+        rightWingOuter.setPivot(-13, 10, 0.1F);
         rightWingOuter.roll = -0.2F;
-        rightWingOuter.addBox(0, 0, 0, 10, 12, 1);
+        rightWingOuter.addCuboid(0, 0, 0, 10, 12, 1);
 
         rightWingInner.addChild(rightWingOuter);
 
-        leftWingInner = new Cuboid(this, 42, 0);
+        leftWingInner = new ModelPart(this, 42, 0);
         leftWingInner.mirror = true;
         leftWingInner.roll = 0.2F;
-        leftWingInner.addBox(2, -5, 0, 10, 19, 1);
+        leftWingInner.addCuboid(2, -5, 0, 10, 19, 1);
 
         body.addChild(leftWingInner);
 
-        leftWingOuter = new Cuboid(this, 24, 16);
+        leftWingOuter = new ModelPart(this, 24, 16);
         leftWingOuter.mirror = true;
         leftWingOuter.roll = -0.2F;
-        leftWingOuter.setRotationPoint(2, 10, 0.1F);
-        leftWingOuter.addBox(0, 0, 0, 10, 12, 1);
+        leftWingOuter.setPivot(2, 10, 0.1F);
+        leftWingOuter.addCuboid(0, 0, 0, 10, 12, 1);
 
         leftWingInner.addChild(leftWingOuter);
     }
 
     @Override
-    public void render(ButterflyEntity entityIn, float limbSwing, float limbSwingAmount, float ageInTicks, float netHeadYaw, float headPitch, float scale) {
-
-        setAngles(entityIn, limbSwing, limbSwingAmount, ageInTicks, netHeadYaw, headPitch, scale);
-
-        GlStateManager.disableLighting();
-
-        body.render(scale);
-
-        GlStateManager.enableLighting();
+    public void render(MatrixStack matrices, VertexConsumer vertexConsumer, int light, int overlay, float red, float green, float blue, float alpha) {
+        RenderSystem.disableLighting();
+        body.render(matrices, vertexConsumer, light, overlay, red, green, blue, alpha);
+        RenderSystem.enableLighting();
     }
 
     @Override
-    public void setAngles(ButterflyEntity entity, float limbSwing, float limbSwingAmount, float ageInTicks, float netHeadYaw, float headPitch, float scaleFactor) {
+    public void setAngles(ButterflyEntity entity, float limbSwing, float limbSwingAmount, float ageInTicks, float headYaw, float headPitch) {
 
         float flap = MathHelper.cos(ageInTicks) * (float)Math.PI / 4;
 

src/main/java/com/minelittlepony/unicopia/client/render/model/CloudEntityModel.java

@@ -1,32 +1,37 @@
 package com.minelittlepony.unicopia.client.render.model;
 
+import com.google.common.collect.ImmutableList;
 import com.minelittlepony.unicopia.entity.CloudEntity;
 
-import net.minecraft.client.model.Cuboid;
-import net.minecraft.client.render.entity.model.EntityModel;
+import net.minecraft.client.model.ModelPart;
+import net.minecraft.client.render.entity.model.CompositeEntityModel;
 
-public class CloudEntityModel extends EntityModel<CloudEntity> {
+public class CloudEntityModel extends CompositeEntityModel<CloudEntity> {
 
-    private final Cuboid body;
+    private final ModelPart body;
 
     public CloudEntityModel() {
-        body = new Cuboid(this, 0, 0);
+        body = new ModelPart(this, 0, 0);
         body.setTextureSize(250, 90);
 
         body.setTextureOffset(0, 0);
-        body.addBox(-24, 5, -24, 48, 10, 48);
+        body.addCuboid(-24, 5, -24, 48, 10, 48);
 
         body.setTextureOffset(0, 58);
-        body.addBox(-10, 14.999F, -10, 30, 2, 30);
+        body.addCuboid(-10, 14.999F, -10, 30, 2, 30);
 
         body.setTextureOffset(120, 58);
-        body.addBox(-10, 3.001F, -10, 30, 2, 30);
+        body.addCuboid(-10, 3.001F, -10, 30, 2, 30);
 
-        body.rotationPointY += 4.2;
+        body.pivotY += 4.2;
     }
 
     @Override
-    public void render(CloudEntity cloud, float limbSwing, float limbSwingAmount, float ageInTicks, float netHeadYaw, float headPitch, float scale) {
-        body.render(scale);
+    public Iterable<ModelPart> getParts() {
+        return ImmutableList.of(body);
+    }
+
+    @Override
+    public void setAngles(CloudEntity entity, float limbAngle, float limbDistance, float customAngle, float headYaw, float headPitch) {
     }
 }

src/main/java/com/minelittlepony/unicopia/client/render/model/CuccoonEntityModel.java

@@ -1,68 +1,65 @@
 package com.minelittlepony.unicopia.client.render.model;
 
 import com.minelittlepony.unicopia.entity.CuccoonEntity;
-import com.mojang.blaze3d.platform.GlStateManager;
-import com.mojang.blaze3d.platform.GlStateManager.DestFactor;
-import com.mojang.blaze3d.platform.GlStateManager.SourceFactor;
+import com.mojang.blaze3d.platform.GlStateManager.DstFactor;
+import com.mojang.blaze3d.platform.GlStateManager.SrcFactor;
+import com.mojang.blaze3d.systems.RenderSystem;
 
-import net.minecraft.client.model.Cuboid;
+import net.minecraft.client.model.ModelPart;
+import net.minecraft.client.render.VertexConsumer;
 import net.minecraft.client.render.entity.model.EntityModel;
+import net.minecraft.client.util.math.MatrixStack;
 
 public class CuccoonEntityModel extends EntityModel<CuccoonEntity> {
 
-    private final Cuboid body;
+    private final ModelPart body;
+
+    private float breatheAmount;
 
     public CuccoonEntityModel() {
-        body = new Cuboid(this, 0, 0);
+        body = new ModelPart(this, 0, 0);
         body.setTextureSize(250, 250);
 
         body.setTextureOffset(0, 0);
 
         // cuccoon shape
-        body.addBox(-4, -2, -4, 8, 2, 8);
-        body.addBox(-7.5F, 0, -7.5F, 15, 6, 15);
-        body.addBox(-10, 4, -10, 20, 6, 20);
-        body.addBox(-11.5F, 10, -11.5F, 23, 8, 23);
-        body.addBox(-10, 17, -10, 20, 6, 20);
-        body.addBox(-11.5F, 22, -11.5F, 23, 2, 23);
-
-
-        // pile of blocks
-        // body.addBox(-10, offsetY + 10, -10, 12, 12, 12);
-        // body.addBox(-14, offsetY + 14, 4, 10, 10, 10);
-        // body.addBox(-17, offsetY + 17, 3, 8, 8, 8);
-        // body.addBox(0, offsetY + 10, 0, 12, 12, 12);
-        // body.addBox(-7, offsetY + 6, -7, 16, 16, 16);
-        // body.addBox(-7, offsetY + 0, -7, 12, 12, 12);
+        body.addCuboid(-4, -2, -4, 8, 2, 8);
+        body.addCuboid(-7.5F, 0, -7.5F, 15, 6, 15);
+        body.addCuboid(-10, 4, -10, 20, 6, 20);
+        body.addCuboid(-11.5F, 10, -11.5F, 23, 8, 23);
+        body.addCuboid(-10, 17, -10, 20, 6, 20);
+        body.addCuboid(-11.5F, 22, -11.5F, 23, 2, 23);
     }
 
     @Override
-    public void render(CuccoonEntity entity, float limbSwing, float limbSwingAmount, float ageInTicks, float netHeadYaw, float headPitch, float scale) {
+    public void render(MatrixStack matrices, VertexConsumer vertexConsumer, int light, int overlay, float red, float green, float blue, float alpha) {
+        matrices.push();
 
-        float breatheAmount = entity.getBreatheAmount(ageInTicks) / 8;
+        RenderSystem.enableBlend();
+        RenderSystem.enableAlphaTest();
+        RenderSystem.enableRescaleNormal();
 
-        GlStateManager.pushMatrix();
+        RenderSystem.blendFunc(SrcFactor.SRC_ALPHA, DstFactor.ONE_MINUS_SRC_ALPHA);
 
-        GlStateManager.enableBlend();
-        GlStateManager.enableAlphaTest();
-        GlStateManager.enableNormalize();
+        matrices.scale(1 - breatheAmount, 1 + breatheAmount, 1 - breatheAmount);
+        matrices.translate(0, -breatheAmount * 1.3F, 0);
 
-        GlStateManager.blendFunc(SourceFactor.SRC_ALPHA, DestFactor.ONE_MINUS_SRC_ALPHA);
+        body.render(matrices, vertexConsumer, light, overlay, red, green, blue, alpha);
 
-        GlStateManager.scalef(1 - breatheAmount, 1 + breatheAmount, 1 - breatheAmount);
-        GlStateManager.translatef(0, -breatheAmount * 1.3F, 0);
+        matrices.scale(0.9F, 0.9F, 0.9F);
+        matrices.translate(0, 0.2F, 0);
 
-        body.render(scale);
+        body.render(matrices, vertexConsumer, light, overlay, red, green, blue, alpha);
 
-        GlStateManager.scalef(0.9F, 0.9F, 0.9F);
-        GlStateManager.translatef(0, 0.2F, 0);
+        RenderSystem.disableRescaleNormal();
+        RenderSystem.disableAlphaTest();
+        RenderSystem.disableBlend();
 
-        body.render(scale);
+        matrices.pop();
+    }
 
-        GlStateManager.disableNormalize();
-        GlStateManager.disableAlphaTest();
-        GlStateManager.disableBlend();
-
-        GlStateManager.popMatrix();
+    @Override
+    public void setAngles(CuccoonEntity entity, float limbAngle, float limbDistance, float customAngle, float headYaw, float headPitch) {
+        breatheAmount = entity.getBreatheAmount(customAngle) / 8;
     }
 }

src/main/java/com/minelittlepony/unicopia/client/render/model/DiskModel.java

@@ -0,0 +1,23 @@
+package com.minelittlepony.unicopia.client.render.model;
+
+import net.minecraft.client.render.VertexConsumer;
+import net.minecraft.client.util.math.Matrix4f;
+import net.minecraft.client.util.math.MatrixStack;
+
+public class DiskModel extends SphereModel {
+
+    @Override
+    public void render(MatrixStack.Entry matrices, VertexConsumer vertexWriter, int light, int overlay, float r, float g, float b, float a) {
+        Matrix4f model = matrices.getModel();
+
+        final double num_rings = 30;
+        final double zenithIncrement = Math.PI / num_rings;
+
+        double radius = 1;
+
+        for(double zenith = 0; zenith < Math.PI; zenith += zenithIncrement) {
+            drawVertex(model, vertexWriter, radius, zenith, Math.PI, light, overlay, r, g, b, a);
+        }
+    }
+
+}

src/main/java/com/minelittlepony/unicopia/client/render/model/GemEntityModel.java

@@ -1,82 +1,42 @@
 package com.minelittlepony.unicopia.client.render.model;
 
-import com.minelittlepony.unicopia.client.render.ModelQuads;
 import com.minelittlepony.unicopia.entity.SpellcastEntity;
 import com.minelittlepony.unicopia.util.Color;
-import com.mojang.blaze3d.platform.GLX;
-import com.mojang.blaze3d.platform.GlStateManager;
-
-import net.minecraft.client.model.Cuboid;
-import net.minecraft.client.model.Vertex;
+import net.minecraft.client.model.ModelPart;
+import net.minecraft.client.render.VertexConsumer;
 import net.minecraft.client.render.entity.model.EntityModel;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.entity.EntityPose;
 import net.minecraft.util.math.MathHelper;
 
 public class GemEntityModel extends EntityModel<SpellcastEntity> {
 
-    private Cuboid body;
+    private ModelPart body;
+
+    private int tint;
 
     public GemEntityModel() {
         textureWidth = 256;
         textureHeight = 256;
 
-        body = new Cuboid(this);
-        body.y = 1.2f;
-
-        int size = 1;
-
-        body.boxes.add(new ModelQuads(body).addFace(
-            new Vertex( size, 0,     size, 0,     0.5f),
-            new Vertex(-size, 0,     size, 0.25f, 0.25f),
-            new Vertex( 0, size * 2, 0, 0,     0.25f),
-            new Vertex( 0, size * 2, 0, 0,     0.25f)
-        ).addFace(
-            new Vertex( size,  0,     size, 0,     0.25f),
-            new Vertex(-size,  0,     size, 0.25f, 0),
-            new Vertex( 0, -size * 2, 0, 0.25f, 0.25f),
-            new Vertex( 0, -size * 2, 0, 0.25f, 0.25f)
-        ).addFace(
-            new Vertex(size, 0,    -size, 0.25f, 0.5f),
-            new Vertex(size, 0,     size, 0.5f,  0.25f),
-            new Vertex(0, size * 2, 0, 0.25f, 0.25f),
-            new Vertex(0, size * 2, 0, 0.25f, 0.25f)
-        ).addFace(
-            new Vertex(size,  0,    -size, 0.25f, 0.25f),
-            new Vertex(size,  0,     size, 0.5f,  0),
-            new Vertex(0, -size * 2, 0, 0.5f,  0.25f),
-            new Vertex(0, -size * 2, 0, 0.5f,  0.25f)
-        ).addFace(
-            new Vertex(-size, 0,    -size, 0.5f,  0.5f),
-            new Vertex( size, 0,    -size, 0.75f, 0.25f),
-            new Vertex( 0, size * 2, 0, 0.5f,  0.25f),
-            new Vertex( 0, size * 2, 0, 0.5f,  0.25f)
-        ).addFace(
-            new Vertex(-size,  0,    -size, 0.5f,  0.25f),
-            new Vertex( size,  0,    -size, 0.75f, 0),
-            new Vertex( 0, -size * 2, 0, 0.75f, 0.25f),
-            new Vertex( 0, -size * 2, 0, 0.75f, 0.25f)
-        ).addFace(
-            new Vertex(-size, 0,     size, 0.75f, 0.5f),
-            new Vertex(-size, 0,    -size, 1,     0.25f),
-            new Vertex( 0, size * 2, 0, 0.75f, 0.25f),
-            new Vertex( 0, size * 2, 0, 0.75f, 0.25f)
-        ).addFace(
-            new Vertex(-size,  0,     size, 0.75f, 0.25f),
-            new Vertex(-size,  0,    -size, 1,     0),
-            new Vertex( 0, -size * 2, 0, 1,     0.25f),
-            new Vertex( 0, -size * 2, 0, 1,     0.25f)
-        ));
+        body = new ModelPart(this);
+        body.pivotY = 1.2f;
     }
 
     @Override
-    public void render(SpellcastEntity entity, float time, float walkSpeed, float stutter, float yaw, float pitch, float scale) {
+    public void setAngles(SpellcastEntity entity, float limbAngle, float limbDistance, float customAngle, float headYaw, float headPitch) {
+        tint = entity.hasEffect() ? entity.getEffect().getTint() : -1;
 
-        GlStateManager.pushMatrix();
+        float floatOffset = MathHelper.sin((entity.age + customAngle) / 10 + entity.hoverStart) / 10 + 0.1F;
 
-        float floatOffset = MathHelper.sin((entity.age + stutter) / 10 + entity.hoverStart) / 10 + 0.1F;
-        GlStateManager.translated(0, floatOffset - entity.getEyeHeight(EntityPose.STANDING), 0);
+        boolean unstable = entity.overLevelCap();
 
-        floatOffset = (entity.age + stutter) / 20;
+        body.pivotX = unstable ? (float)Math.sin(customAngle) / 5F : 0;
+        body.pivotY = 1.2F + floatOffset - entity.getEyeHeight(EntityPose.STANDING);
+        body.pivotZ = unstable ? (float)Math.cos(customAngle) / 5F : 0;
+        body.pitch = unstable ? (float)Math.sin(customAngle) : 0;
+
+        floatOffset = (entity.age + customAngle) / 20;
         if (entity.getCurrentLevel() > 0) {
             floatOffset *= entity.getCurrentLevel() + 1;
         }
@@ -84,74 +44,19 @@ public class GemEntityModel extends EntityModel<SpellcastEntity> {
         floatOffset += entity.hoverStart;
         floatOffset *= 180 / (float)Math.PI;
 
-        GlStateManager.pushMatrix();
+        body.yaw = floatOffset;
 
-        if (entity.overLevelCap()) {
-            GlStateManager.translated(Math.sin(stutter) / 5, 0, Math.cos(stutter) / 5);
-
-            GlStateManager.rotatef((float)Math.sin(stutter), 0, 1, 0);
-        }
-
-        GlStateManager.rotated(floatOffset, 0, 1, 0);
-
-        body.render(scale);
-
-        GlStateManager.enableBlend();
-        GlStateManager.disableAlphaTest();
-        GlStateManager.blendFunc(1, 1);
-
-        setLightingConditionsBrightness(0xF0F0);
-
-        if (entity.hasEffect()) {
-            int tint = entity.getEffect().getTint();
-            GlStateManager.color4f(Color.r(tint), Color.g(tint), Color.b(tint), 1);
-        }
-
-        int tiers = Math.min(entity.getCurrentLevel(), 5);
-
-        for (int i = 0; i <= tiers; i++) {
-            float grow = (1 + i) * 0.2F;
-
-            GlStateManager.scalef(1 + grow, 1 + grow, 1 + grow);
-            GlStateManager.translatef(0, -grow, 0);
-            renderOverlay(grow, scale);
-
-            if (i == 5) {
-                GlStateManager.pushMatrix();
-                GlStateManager.rotatef(-floatOffset * 0.9F, 0, 1, 0);
-                GlStateManager.translatef(0.6F, 0.8F, 0);
-                GlStateManager.scalef(0.4F, 0.4F, 0.4F);
-                renderOverlay(grow, scale);
-                GlStateManager.popMatrix();
-            }
-
-        }
-        GlStateManager.popMatrix();
-
-        for (int i = entity.getCurrentLevel(); i > 0; i--) {
-            GlStateManager.pushMatrix();
-            GlStateManager.rotatef(floatOffset / i, 0, 1, 0);
-            GlStateManager.translatef(0.6F, 0, 0);
-            renderOverlay(0.6F, scale);
-            GlStateManager.popMatrix();
-        }
-
-        setLightingConditionsBrightness(entity.getLightmapCoordinates());
-
-        GlStateManager.disableBlend();
-        GlStateManager.enableAlphaTest();
-
-        GlStateManager.popMatrix();
     }
 
-    protected void renderOverlay(float grow, float scale) {
-        body.render(scale);
+    @Override
+    public void render(MatrixStack matrices, VertexConsumer vertexConsumer, int light, int overlay, float red, float green, float blue, float alpha) {
+        if (tint != -1) {
+            red = Color.r(tint);
+            green = Color.g(tint);
+            blue = Color.b(tint);
+        }
+
+        body.render(matrices, vertexConsumer, light, overlay, red, green, blue, alpha);
     }
 
-    private void setLightingConditionsBrightness(int brightness) {
-        int texX = brightness % 0x10000;
-        int texY = brightness / 0x10000;
-
-        GLX.glMultiTexCoord2f(GLX.GL_TEXTURE1, texX, texY);
-    }
 }

src/main/java/com/minelittlepony/unicopia/client/render/model/SpellbookModel.java

@@ -1,49 +1,69 @@
 package com.minelittlepony.unicopia.client.render.model;
 
+import java.util.List;
+
+import com.google.common.collect.ImmutableList;
 import com.minelittlepony.unicopia.entity.SpellbookEntity;
 
-import net.minecraft.client.model.Cuboid;
+import net.minecraft.client.model.ModelPart;
+import net.minecraft.client.render.VertexConsumer;
 import net.minecraft.client.render.entity.model.EntityModel;
+import net.minecraft.client.util.math.MatrixStack;
 import net.minecraft.util.math.MathHelper;
 
 public class SpellbookModel extends EntityModel<SpellbookEntity> {
-    private final Cuboid leftCover = (new Cuboid(this)).setTextureOffset(0, 0).addBox(-6.0F, -5.0F, 0.0F, 6, 10, 0);
-    private final Cuboid rightCover = (new Cuboid(this)).setTextureOffset(16, 0).addBox(0.0F, -5.0F, 0.0F, 6, 10, 0);
-    private final Cuboid leftBlock = (new Cuboid(this)).setTextureOffset(0, 10).addBox(0.0F, -4.0F, -0.99F, 5, 8, 1);
-    private final Cuboid rightBlock = (new Cuboid(this)).setTextureOffset(12, 10).addBox(0.0F, -4.0F, -0.01F, 5, 8, 1);
-    private final Cuboid leftPage = (new Cuboid(this)).setTextureOffset(24, 10).addBox(0.0F, -4.0F, 0.0F, 5, 8, 0);
-    private final Cuboid rightPage = (new Cuboid(this)).setTextureOffset(24, 10).addBox(0.0F, -4.0F, 0.0F, 5, 8, 0);
-    private final Cuboid spine = (new Cuboid(this)).setTextureOffset(12, 0).addBox(-1.0F, -5.0F, 0.0F, 2, 10, 0);
+    private final ModelPart leftCover = (new ModelPart(64, 32, 0, 0)).addCuboid(-6, -5, -0.005F, 6, 10, 0.005F);
+    private final ModelPart rightCover = (new ModelPart(64, 32, 16, 0)).addCuboid(0, -5, -0.005F, 6, 10, 0.005F);
+    private final ModelPart leftBlock = (new ModelPart(64, 32, 0, 10)).addCuboid(0, -4, -0.99F, 5, 8, 1);
+    private final ModelPart rightBlock = (new ModelPart(64, 32, 12, 10)).addCuboid(0, -4, -0.01F, 5, 8, 1);
+    private final ModelPart leftPage = (new ModelPart(64, 32, 24, 10)).addCuboid(0, -4, 0, 5, 8, 0.005F);
+    private final ModelPart rightPage = (new ModelPart(64, 32, 24, 10)).addCuboid(0, -4, 0, 5, 8, 0.005F);
+    private final ModelPart spine = (new ModelPart(64, 32, 12, 0)).addCuboid(-1, -5, 0, 2, 10, 0.005F);
+
+    private final List<ModelPart> parts = ImmutableList.of(leftCover, rightCover, spine, leftBlock, rightBlock, leftPage, rightPage);
 
     public SpellbookModel() {
-       this.leftCover.setRotationPoint(0.0F, 0.0F, -1.0F);
-       this.rightCover.setRotationPoint(0.0F, 0.0F, 1.0F);
-       this.spine.yaw = 1.5707964F;
+       leftCover.setPivot(0, 0, -1);
+       rightCover.setPivot(0, 0, 1);
+       spine.yaw = 1.5707964F;
     }
 
     @Override
-    public void render(SpellbookEntity entity, float float_1, float float_2, float float_3, float float_4, float float_5, float float_6) {
-       this.leftCover.render(float_6);
-       this.rightCover.render(float_6);
-       this.spine.render(float_6);
-       this.leftBlock.render(float_6);
-       this.rightBlock.render(float_6);
-       this.leftPage.render(float_6);
-       this.rightPage.render(float_6);
+    public void render(MatrixStack matrices, VertexConsumer vertexConsumer, int light, int overlay, float red, float green, float blue, float alpha) {
+       parts.forEach(modelPart -> {
+          modelPart.render(matrices, vertexConsumer, light, overlay, red, green, blue, alpha);
+       });
+    }
+
+    public void setPageAngles(float breath, float leftPageRot, float rightPageRot, float openAngle) {
+       float j = (MathHelper.sin(breath * 0.02F) * 0.1F + 1.25F) * openAngle;
+       leftCover.yaw = 3.1415927F + j;
+       rightCover.yaw = -j;
+       leftBlock.yaw = j;
+       rightBlock.yaw = -j;
+       leftPage.yaw = j - j * 2 * leftPageRot;
+       rightPage.yaw = j - j * 2 * rightPageRot;
+       leftBlock.pivotX = MathHelper.sin(j);
+       rightBlock.pivotX = MathHelper.sin(j);
+       leftPage.pivotX = MathHelper.sin(j);
+       rightPage.pivotX = MathHelper.sin(j);
     }
 
     @Override
-    public void setAngles(SpellbookEntity entity, float float_1, float float_2, float float_3, float float_4, float float_5, float float_6) {
-       float float_7 = (MathHelper.sin(float_1 * 0.02F) * 0.1F + 1.25F) * float_4;
-       this.leftCover.yaw = 3.1415927F + float_7;
-       this.rightCover.yaw = -float_7;
-       this.leftBlock.yaw = float_7;
-       this.rightBlock.yaw = -float_7;
-       this.leftPage.yaw = float_7 - float_7 * 2.0F * float_2;
-       this.rightPage.yaw = float_7 - float_7 * 2.0F * float_3;
-       this.leftBlock.rotationPointX = MathHelper.sin(float_7);
-       this.rightBlock.rotationPointX = MathHelper.sin(float_7);
-       this.leftPage.rotationPointX = MathHelper.sin(float_7);
-       this.rightPage.rotationPointX = MathHelper.sin(float_7);
+    public void setAngles(SpellbookEntity entity, float limbAngle, float limbDistance, float customAngle, float headYaw, float headPitch) {
+        float breath = MathHelper.sin((entity.age + customAngle) / 20) * 0.01F + 0.1F;
+
+        float first_page_rot = limbDistance + (breath * 10);
+        float second_page_rot = 1 - first_page_rot;
+        float open_angle = 0.9f - limbDistance;
+
+        if (first_page_rot > 1) first_page_rot = 1;
+        if (second_page_rot > 1) second_page_rot = 1;
+
+        if (!entity.getIsOpen()) {
+            first_page_rot = second_page_rot = open_angle = 0;
+        }
+
+        setPageAngles(breath, first_page_rot, second_page_rot, open_angle);
     }
 }

src/main/java/com/minelittlepony/unicopia/client/render/model/SphereModel.java

@@ -0,0 +1,99 @@
+package com.minelittlepony.unicopia.client.render.model;
+
+import net.minecraft.client.render.VertexConsumer;
+import net.minecraft.client.render.block.entity.BlockEntityRenderDispatcher;
+import net.minecraft.client.util.math.Matrix4f;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.client.util.math.Vector3f;
+import net.minecraft.client.util.math.Vector4f;
+import net.minecraft.util.math.Quaternion;
+import net.minecraft.util.math.Vec3d;
+
+public class SphereModel {
+
+    protected Vec3d pos;
+
+    protected Quaternion rotX;
+    protected Quaternion rotY;
+    protected Quaternion rotZ;
+
+    public void setPosition(double x, double y, double z) {
+        pos = new Vec3d(x, y, z).subtract(BlockEntityRenderDispatcher.INSTANCE.camera.getPos());
+    }
+
+    public void setRotation(float x, float y, float z) {
+        rotX = Vector3f.POSITIVE_X.getDegreesQuaternion(x);
+        rotY = Vector3f.POSITIVE_Y.getDegreesQuaternion(y);
+        rotZ = Vector3f.POSITIVE_Z.getDegreesQuaternion(z);
+    }
+
+    public void render(MatrixStack matrices, float scale, VertexConsumer vertexWriter, int light, int overlay, float r, float g, float b, float a) {
+        if (scale == 0) {
+            return;
+        }
+
+        matrices.push();
+
+        matrices.translate(pos.x, pos.y, pos.z);
+        matrices.multiply(rotX);
+        matrices.multiply(rotY);
+        matrices.multiply(rotZ);
+
+        matrices.scale(scale, scale, scale);
+
+        render(matrices.peek(), vertexWriter, light, overlay, r, g, b, a);
+
+        matrices.pop();
+    }
+
+    public void render(MatrixStack.Entry matrices, VertexConsumer vertexWriter, int light, int overlay, float r, float g, float b, float a) {
+
+        Matrix4f model = matrices.getModel();
+
+        final double num_rings = 30;
+        final double num_sectors = 30;
+        final double two_pi = Math.PI * 2;
+        final double zenithIncrement = Math.PI / num_rings;
+        final double azimuthIncrement = two_pi / num_sectors;
+
+        double radius = 1;
+
+        for(double zenith = 0; zenith < Math.PI; zenith += zenithIncrement) {
+            for(double azimuth = 0; azimuth < two_pi; azimuth += azimuthIncrement) {
+                drawVertex(model, vertexWriter, radius, zenith, azimuth, light, overlay, r, g, b, a);                                      // top left
+                drawVertex(model, vertexWriter, radius, zenith + zenithIncrement, azimuth, light, overlay, r, g, b, a);                    // top right
+                drawVertex(model, vertexWriter, radius, zenith + zenithIncrement, azimuth + azimuthIncrement, light, overlay, r, g, b, a); // bottom right
+                drawVertex(model, vertexWriter, radius, zenith, azimuth + azimuthIncrement, light, overlay, r, g, b, a);                   // bottom left
+            }
+        }
+    }
+
+    protected void drawQuad(Matrix4f model, VertexConsumer vertexWriter,
+            double radius, double zenith, double azimuth,
+            double zenithIncrement, double azimuthIncrement,
+            int light, int overlay, float r, float g, float b, float a) {
+
+
+    }
+
+    protected void drawVertex(Matrix4f model, VertexConsumer vertexWriter,
+            double radius, double zenith, double azimuth,
+            int light, int overlay, float r, float g, float b, float a) {
+        Vector4f position = convertToCartesianCoord(radius, zenith, azimuth);
+        position.transform(model);
+        vertexWriter.vertex(position.getX(), position.getY(), position.getZ(),
+                r, g, b, a,
+                0, 0, overlay, light, 0, 0, 0);
+    }
+
+    protected Vector4f convertToCartesianCoord(double radius, double zenith, double azimuth) {
+
+        double tanq = Math.tan(zenith);
+
+        double x = Math.pow(radius, 2) / (2 * tanq) - (tanq / 2);
+        double y = x * tanq;
+        double z = radius / Math.tan(azimuth);
+
+        return new Vector4f((float)x, (float)y, (float)z, 1);
+    }
+}

src/main/java/com/minelittlepony/unicopia/command/DisguiseCommand.java

@@ -49,7 +49,7 @@ public class DisguiseCommand {
     }
 
     static int disguise(ServerCommandSource source, PlayerEntity player, Identifier id, CompoundTag nbt, boolean isSelf) throws CommandSyntaxException {
-        nbt = nbt.method_10553();
+        nbt = nbt.copy();
         nbt.putString("id", id.toString());
 
         Pony iplayer = Pony.of(player);

src/main/java/com/minelittlepony/unicopia/container/BagOfHoldingContainer.java

@@ -67,14 +67,14 @@ public class BagOfHoldingContainer extends Container {
     @Override
     public ItemStack transferSlot(PlayerEntity playerIn, int index) {
         ItemStack resultingStack = ItemStack.EMPTY;
-        Slot slot = slotList.get(index);
+        Slot slot = slots.get(index);
 
         if (slot != null && slot.hasStack()) {
             ItemStack originalStack = slot.getStack();
             resultingStack = originalStack.copy();
 
             if (index < inventory.getInvSize()) {
-                if (!insertItem(originalStack, inventory.getInvSize(), slotList.size(), true)) {
+                if (!insertItem(originalStack, inventory.getInvSize(), slots.size(), true)) {
                     return ItemStack.EMPTY;
                 }
             } else if (!insertItem(originalStack, 0, inventory.getInvSize(), false)) {

src/main/java/com/minelittlepony/unicopia/container/BagOfHoldingInventory.java

@@ -20,6 +20,8 @@ import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.inventory.BasicInventory;
 import net.minecraft.inventory.Inventory;
 import net.minecraft.item.ItemStack;
+import net.minecraft.loot.context.LootContext;
+import net.minecraft.loot.context.LootContextParameters;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.nbt.ListTag;
 import net.minecraft.server.network.ServerPlayerEntity;
@@ -30,8 +32,6 @@ import net.minecraft.text.Text;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 import net.minecraft.world.explosion.Explosion.DestructionType;
-import net.minecraft.world.loot.context.LootContext;
-import net.minecraft.world.loot.context.LootContextParameters;
 
 public class BagOfHoldingInventory extends BasicInventory implements NbtSerialisable {
 
@@ -54,14 +54,14 @@ public class BagOfHoldingInventory extends BasicInventory implements NbtSerialis
     }
 
     public static void iterateContents(ItemStack stack, BiFunction<Integer, ItemStack, Boolean> itemConsumer) {
-        if (stack.hasTag() && stack.getTag().containsKey("inventory")) {
+        if (stack.hasTag() && stack.getTag().contains("inventory")) {
             CompoundTag compound = stack.getSubTag("inventory");
 
-            if (compound.containsKey("items")) {
+            if (compound.contains("items")) {
                 ListTag list = compound.getList("items", NBT_COMPOUND);
 
                 for (int i = 0; i < list.size(); i++) {
-                    ItemStack item = ItemStack.fromTag(list.getCompoundTag(i));
+                    ItemStack item = ItemStack.fromTag(list.getCompound(i));
                     if (!item.isEmpty() && !itemConsumer.apply(i, item)) {
                         break;
                     }
@@ -135,7 +135,7 @@ public class BagOfHoldingInventory extends BasicInventory implements NbtSerialis
                 BOHDeathCriterion.INSTANCE.trigger((ServerPlayerEntity)player);
             }
             player.damage(MagicalDamageSource.create("paradox"), 1000);
-            player.world.createExplosion(player, player.x, player.y, player.z, 5, DestructionType.DESTROY);
+            player.world.createExplosion(player, player.getX(), player.getY(), player.getZ(), 5, DestructionType.DESTROY);
         }
     }
 
@@ -154,7 +154,7 @@ public class BagOfHoldingInventory extends BasicInventory implements NbtSerialis
 
         return isIllegalBlock(Block.getBlockFromItem(stack.getItem()))
                 || stack.getItem().isIn(UTags.HAMMERPACE_IMMUNE)
-                || (compound != null && compound.containsKey("invalid"));
+                || (compound != null && compound.contains("invalid"));
     }
 
     protected boolean isIllegalBlock(Block block) {

src/main/java/com/minelittlepony/unicopia/container/BagOfHoldingScreen.java

@@ -4,12 +4,12 @@ import com.minelittlepony.common.client.gui.element.Scrollbar;
 import com.minelittlepony.unicopia.item.BagOfHoldingItem;
 import com.mojang.blaze3d.platform.GlStateManager;
 
-import net.minecraft.client.gui.screen.ingame.AbstractContainerScreen;
+import net.minecraft.client.gui.screen.ingame.ContainerScreen;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.sound.SoundEvents;
 import net.minecraft.util.Identifier;
 
-public class BagOfHoldingScreen extends AbstractContainerScreen<BagOfHoldingContainer> {
+public class BagOfHoldingScreen extends ContainerScreen<BagOfHoldingContainer> {
     private static final Identifier CHEST_GUI_TEXTURE = new Identifier("textures/gui/container/generic_54.png");
 
     private final int inventoryRows;
@@ -21,15 +21,16 @@ public class BagOfHoldingScreen extends AbstractContainerScreen<BagOfHoldingCont
         super(provider.createMenu(0, player.inventory, player), player.inventory, provider.getDisplayName());
 
         playerRows = playerInventory.getInvSize() / 9;
-        inventoryRows = (container.slotList.size() / 9) - 1;
+        inventoryRows = (container.slots.size() / 9) - 1;
+
     }
 
     @Override
     public void init() {
         super.init();
         scrollbar.reposition(
-                left + containerWidth,
-                top,
+                x + containerWidth,
+                y,
                 containerHeight,
                 (inventoryRows + 1) * 18 + 17);
         children.add(scrollbar);

src/main/java/com/minelittlepony/unicopia/container/HeavyInventory.java

@@ -55,7 +55,7 @@ public class HeavyInventory {
             CompoundTag bet = stack.getSubTag("BlockEntityTag");
             CompoundTag compound = stack.getSubTag("inventory");
 
-            boolean hasWeight = compound != null && compound.containsKey("weight");
+            boolean hasWeight = compound != null && compound.contains("weight");
 
             if (deep) {
                 if (!hasWeight && bet != null) {
@@ -76,7 +76,7 @@ public class HeavyInventory {
                 }
             }
 
-            if (hasWeight && (deep || !compound.containsKey("deep"))) {
+            if (hasWeight && (deep || !compound.contains("deep"))) {
                 return compound.getDouble("weight");
             }
         }

src/main/java/com/minelittlepony/unicopia/container/SpellBookContainer.java

@@ -90,9 +90,9 @@ public class SpellBookContainer extends Container {
 
                     player.playSound(SoundEvents.BLOCK_NOTE_BLOCK_SNARE, 1, 1);
 
-                    worldObj.createExplosion(null, player.x, player.y, player.z, 0, DestructionType.NONE);
-                    worldObj.createExplosion(null, player.x, player.y, player.z, 0, DestructionType.NONE);
-                    worldObj.addParticle(ParticleTypes.EXPLOSION, player.x, player.y, player.z, 1, 0, 0);
+                    worldObj.createExplosion(null, player.getX(), player.getY(), player.getZ(), 0, DestructionType.NONE);
+                    worldObj.createExplosion(null, player.getX(), player.getY(), player.getZ(), 0, DestructionType.NONE);
+                    worldObj.addParticle(ParticleTypes.EXPLOSION, player.getX(), player.getY(), player.getZ(), 1, 0, 0);
 
                     AwaitTickQueue.enqueueTask(w -> player.container.close(player));
 
@@ -116,7 +116,7 @@ public class SpellBookContainer extends Container {
     @Override
     public ItemStack transferSlot(PlayerEntity player, int index) {
         ItemStack stack = ItemStack.EMPTY;
-        Slot slot = slotList.get(index);
+        Slot slot = slots.get(index);
 
         if (slot != null && slot.hasStack()) {
             ItemStack slotStack = slot.getStack();

src/main/java/com/minelittlepony/unicopia/container/SpellBookScreen.java

@@ -1,10 +1,9 @@
-package com.minelittlepony.unicopia.client.gui;
+package com.minelittlepony.unicopia.container;
 
 import org.lwjgl.opengl.GL11;
 
 import com.minelittlepony.common.client.gui.element.Button;
 import com.minelittlepony.unicopia.Unicopia;
-import com.minelittlepony.unicopia.container.SpellBookContainer;
 import com.minelittlepony.unicopia.container.SpellBookContainer.SpellbookSlot;
 import com.minelittlepony.unicopia.enchanting.IPageUnlockListener;
 import com.minelittlepony.unicopia.enchanting.Page;
@@ -13,14 +12,14 @@ import com.minelittlepony.unicopia.enchanting.Pages;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.mojang.blaze3d.platform.GlStateManager;
 
-import net.minecraft.client.gui.screen.ingame.AbstractContainerScreen;
+import net.minecraft.client.gui.screen.ingame.ContainerScreen;
 import net.minecraft.client.texture.MissingSprite;
 import net.minecraft.container.Slot;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.text.LiteralText;
 import net.minecraft.util.Identifier;
 
-public class SpellBookScreen extends AbstractContainerScreen<SpellBookContainer> implements IPageUnlockListener {
+public class SpellBookScreen extends ContainerScreen<SpellBookContainer> implements IPageUnlockListener {
 
     private static Page currentPage;
 
@@ -48,11 +47,11 @@ public class SpellBookScreen extends AbstractContainerScreen<SpellBookContainer>
     public void init() {
         super.init();
 
-        addButton(nextPage = new PageButton(left + 360, top + 185, true)).onClick(v -> {
+        addButton(nextPage = new PageButton(x + 360, y + 185, true)).onClick(v -> {
             currentPage = currentPage.next();
             onPageChange();
         });
-        addButton(prevPage = new PageButton(left + 20, top + 185, false)).onClick(v -> {
+        addButton(prevPage = new PageButton(x + 20, y + 185, false)).onClick(v -> {
             currentPage = currentPage.prev();
             onPageChange();
         });

src/main/java/com/minelittlepony/unicopia/container/SpellbookResultSlot.java

@@ -5,15 +5,21 @@ import com.minelittlepony.unicopia.enchanting.SpellCraftingEvent;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.item.MagicGemItem;
 import com.minelittlepony.unicopia.magic.spell.SpellRegistry;
+import com.mojang.datafixers.util.Pair;
 
+import net.minecraft.container.PlayerContainer;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.inventory.Inventory;
 import net.minecraft.item.ItemStack;
 import net.minecraft.item.MusicDiscItem;
 import net.minecraft.recipe.RecipeType;
 import net.minecraft.util.DefaultedList;
+import net.minecraft.util.Identifier;
 
 public class SpellbookResultSlot extends SpellBookContainer.SpellbookSlot {
+    // TODO: need to register this
+    public static final Identifier EMPTY_GEM_SLOT = new Identifier("unicopia", "empty_slot_gem");
+
 
     private final Pony player;
     private final SpellBookInventory craftMatrix;
@@ -95,7 +101,7 @@ public class SpellbookResultSlot extends SpellBookContainer.SpellbookSlot {
     }
 
     @Override
-    public String getBackgroundSprite() {
-        return "unicopia:items/empty_slot_gem";
+    public Pair<Identifier, Identifier> getBackgroundSprite() {
+        return Pair.of(PlayerContainer.BLOCK_ATLAS_TEXTURE, EMPTY_GEM_SLOT);
     }
 }

src/main/java/com/minelittlepony/unicopia/enchanting/Pages.java

@@ -19,7 +19,7 @@ import net.fabricmc.fabric.api.resource.IdentifiableResourceReloadListener;
 import net.minecraft.resource.JsonDataLoader;
 import net.minecraft.resource.ResourceManager;
 import net.minecraft.util.Identifier;
-import net.minecraft.util.SystemUtil;
+import net.minecraft.util.Util;
 import net.minecraft.util.profiler.Profiler;
 
 public class Pages extends JsonDataLoader implements IdentifiableResourceReloadListener {
@@ -38,7 +38,7 @@ public class Pages extends JsonDataLoader implements IdentifiableResourceReloadL
     private final Map<Identifier, PageInstance> pages = Maps.newHashMap();
     private List<PageInstance> pagesByIndex = Lists.newArrayList();
 
-    private final Map<String, IConditionFactory> conditionFactories = SystemUtil.consume(Maps.newHashMap(), m -> {
+    private final Map<String, IConditionFactory> conditionFactories = Util.make(Maps.newHashMap(), m -> {
         m.put("unicopia:compound_condition", CompoundCondition::new);
         m.put("unicopia:page_state", PageStateCondition::new);
         m.put("unicopia:spell_crafting", SpellCraftingEvent.Condition::new);
@@ -53,12 +53,6 @@ public class Pages extends JsonDataLoader implements IdentifiableResourceReloadL
         return ID;
     }
 
-    @Override
-    protected Map<Identifier, JsonObject> prepare(ResourceManager manager, Profiler profiler) {
-        // TODO: broken synthetic
-        return super.method_20731(manager, profiler);
-    }
-
     @Override
     protected void apply(Map<Identifier, JsonObject> data, ResourceManager manager, Profiler profiled) {
         pages.clear();

src/main/java/com/minelittlepony/unicopia/enchanting/recipe/AffineIngredients.java

@@ -37,12 +37,6 @@ public class AffineIngredients extends JsonDataLoader implements IdentifiableRes
         return ID;
     }
 
-    @Override
-    protected Map<Identifier, JsonObject> prepare(ResourceManager manager, Profiler profiler) {
-        // TODO: broken synthetic
-        return super.method_20731(manager, profiler);
-    }
-
     @Override
     protected void apply(Map<Identifier, JsonObject> data, ResourceManager manager, Profiler profiled) {
         storedIngredients.clear();

src/main/java/com/minelittlepony/unicopia/enchanting/recipe/SpellIngredient.java

@@ -10,12 +10,12 @@ import com.google.gson.JsonParseException;
 import net.minecraft.item.ItemStack;
 import net.minecraft.util.DefaultedList;
 import net.minecraft.util.PacketByteBuf;
-import net.minecraft.util.SystemUtil;
+import net.minecraft.util.Util;
 
 public interface SpellIngredient {
 
     SpellIngredient EMPTY = new SingleSpellIngredient(ItemStack.EMPTY, false);
-    Map<String, Serializer<? extends SpellIngredient>> SERIALIZERS = SystemUtil.consume(new HashMap<>(), map -> {
+    Map<String, Serializer<? extends SpellIngredient>> SERIALIZERS = Util.make(new HashMap<>(), map -> {
         map.put("compound", CompoundSpellIngredient.SERIALIZER);
         map.put("single", SingleSpellIngredient.SERIALIZER);
         map.put("affine", AffineIngredient.SERIALIZER);

src/main/java/com/minelittlepony/unicopia/entity/ButterflyEntity.java

@@ -88,7 +88,7 @@ public class ButterflyEntity extends AmbientEntity {
         super.tick();
 
         Vec3d vel = getVelocity();
-        setVelocity(vel.x, y * 0.6, vel.z);
+        setVelocity(vel.x, getY() * 0.6, vel.z);
     }
 
     public boolean isResting() {
@@ -156,14 +156,18 @@ public class ButterflyEntity extends AmbientEntity {
 
             // select a new hovering position
             if (hoveringPosition == null || random.nextInt(30) == 0 || hoveringPosition.getSquaredDistance(pos) < 4) {
-                hoveringPosition = new BlockPos(x + random.nextInt(7) - random.nextInt(7), y + random.nextInt(6) - 2, z + random.nextInt(7) - random.nextInt(7));
+                hoveringPosition = new BlockPos(
+                        getX() + random.nextInt(7) - random.nextInt(7),
+                        getY() + random.nextInt(6) - 2,
+                        getZ() + random.nextInt(7) - random.nextInt(7)
+                );
             }
 
             // hover casually towards the chosen position
 
-            double changedX = hoveringPosition.getX() + 0.5D - x;
-            double changedY = hoveringPosition.getY() + 0.1D - y;
-            double changedZ = hoveringPosition.getZ() + 0.5D - z;
+            double changedX = hoveringPosition.getX() + 0.5D - getX();
+            double changedY = hoveringPosition.getY() + 0.1D - getY();
+            double changedZ = hoveringPosition.getZ() + 0.5D - getZ();
 
             Vec3d vel = getVelocity();
 
@@ -185,7 +189,8 @@ public class ButterflyEntity extends AmbientEntity {
     }
 
     @Override
-    public void handleFallDamage(float distance, float damageMultiplier) {
+    public boolean handleFallDamage(float distance, float damageMultiplier) {
+        return false;
     }
 
     @Override
@@ -195,7 +200,7 @@ public class ButterflyEntity extends AmbientEntity {
     @Override
     public boolean canSpawn(IWorld world, SpawnType type) {
         if (type == SpawnType.NATURAL) {
-            return y < world.getSeaLevel() && world.getLightLevel(getBlockPos()) > 7;
+            return getY() < world.getSeaLevel() && world.getLightLevel(getBlockPos()) > 7;
         }
         return true;
     }

src/main/java/com/minelittlepony/unicopia/entity/CloudEntity.java

@@ -10,8 +10,8 @@ import com.minelittlepony.unicopia.ability.PegasusCloudInteractionAbility.ICloud
 import com.minelittlepony.unicopia.block.UBlocks;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.item.UItems;
-import com.minelittlepony.unicopia.util.particles.ParticleEmitter;
-import com.minelittlepony.unicopia.util.particles.UParticles;
+import com.minelittlepony.unicopia.particles.ParticleEmitter;
+import com.minelittlepony.unicopia.particles.UParticles;
 
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
@@ -102,11 +102,6 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
         return false;
     }
 
-    @Override
-    public int getLightmapCoordinates() {
-        return 0xF000F0;
-    }
-
     @Override
     public float getBrightnessAtEyes() {
         return 0xF000F0;
@@ -149,7 +144,7 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
     @Override
     protected void pushAway(Entity other) {
         if (other instanceof CloudEntity || other instanceof PlayerEntity) {
-            if (other.y > y) {
+            if (other.getY() > getY()) {
                 return;
             }
 
@@ -175,9 +170,9 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
         if (getIsRaining()) {
             if (world.isClient) {
                 for (int i = 0; i < 30 * getCloudSize(); i++) {
-                    double x = MathHelper.nextDouble(random, boundingbox.minX, boundingbox.maxX);
-                    double y = getBoundingBox().minY + getHeight()/2;
-                    double z = MathHelper.nextDouble(random, boundingbox.minZ, boundingbox.maxZ);
+                    double x = MathHelper.nextDouble(random, boundingbox.x1, boundingbox.x2);
+                    double y = getBoundingBox().y1 + getHeight()/2;
+                    double z = MathHelper.nextDouble(random, boundingbox.z1, boundingbox.z2);
 
                     ParticleEffect particleId = canSnowHere(new BlockPos(x, y, z)) ? ParticleTypes.ITEM_SNOWBALL : UParticles.RAIN_DROPS;
 
@@ -186,21 +181,20 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
 
                 Box rainedArea = boundingbox
                         .expand(1, 0, 1)
-                        .expand(0, -(y - getGroundPosition(x, z).getY()), 0);
+                        .expand(0, -(getY() - getGroundPosition(getBlockPos()).getY()), 0);
 
 
-                for (PlayerEntity j : world.getEntities(PlayerEntity.class, rainedArea)) {
-                    if (!canSnowHere(j.getBlockPos())) {
-                        j.world.playSound(j, j.getBlockPos(), SoundEvents.WEATHER_RAIN, SoundCategory.AMBIENT, 0.1F, 0.6F);
-                    }
+                for (PlayerEntity j : world.getEntities(PlayerEntity.class, rainedArea, j -> canSnowHere(j.getBlockPos()))) {
+                    j.world.playSound(j, j.getBlockPos(), SoundEvents.WEATHER_RAIN, SoundCategory.AMBIENT, 0.1F, 0.6F);
                 }
             }
 
             double width = getDimensions(getPose()).width;
-            BlockPos pos = getGroundPosition(
-                x + random.nextFloat() * width,
-                z + random.nextFloat() * width
-            );
+            BlockPos pos = getGroundPosition(new BlockPos(
+                getX() + random.nextFloat() * width,
+                getY(),
+                getZ() + random.nextFloat() * width
+            ));
 
             if (getIsThundering()) {
                 if (random.nextInt(3000) == 0) {
@@ -246,7 +240,7 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
                         }
                     }
 
-                    state.getBlock().onRainTick(world, below);
+                    state.getBlock().rainTick(world, below);
                 }
             }
 
@@ -277,7 +271,7 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
 
         for (Entity i : world.getEntities(this, boundingbox
                 .expand(1 / (1 + getCloudSize())), EquinePredicates.ENTITY_INTERACT_WITH_CLOUDS)) {
-            if (i.y > y + 0.5) {
+            if (i.getY() > getY() + 0.5) {
                 applyGravityCompensation(i);
             }
         }
@@ -285,9 +279,9 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
         if (isOnFire() && !dead) {
             for (int i = 0; i < 5; i++) {
                 world.addParticle(ParticleTypes.CLOUD,
-                        MathHelper.nextDouble(random, boundingbox.minX, boundingbox.maxX),
-                        MathHelper.nextDouble(random, boundingbox.minY, boundingbox.maxY),
-                        MathHelper.nextDouble(random, boundingbox.minZ, boundingbox.maxZ), 0, 0.25, 0);
+                        MathHelper.nextDouble(random, boundingbox.x1, boundingbox.x2),
+                        MathHelper.nextDouble(random, boundingbox.y1, boundingbox.y2),
+                        MathHelper.nextDouble(random, boundingbox.z1, boundingbox.z2), 0, 0.25, 0);
             }
         }
 
@@ -308,7 +302,7 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
 
     @Override
     public double getMountedHeightOffset() {
-        return getBoundingBox().maxY - getBoundingBox().minY - 0.25;
+        return getBoundingBox().y2 - getBoundingBox().y1 - 0.25;
     }
 
     @Override
@@ -320,14 +314,14 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
 
     @Override
     public void onPlayerCollision(PlayerEntity player) {
-        if (player.y >= y) {
+        if (player.getY() >= getY()) {
             if (applyGravityCompensation(player)) {
-                double difX = player.x - player.prevX;
-                double difZ = player.z - player.prevZ;
-                double difY = player.y - player.prevY;
+                double difX = player.getX() - player.prevX;
+                double difZ = player.getZ() - player.prevZ;
+                double difY = player.getY() - player.prevY;
 
                 player.horizontalSpeed = (float)(player.horizontalSpeed + MathHelper.sqrt(difX * difX + difZ * difZ) * 0.6);
-                player.distanceWalked = (float)(player.distanceWalked + MathHelper.sqrt(difX * difX + difY * difY + difZ * difZ) * 0.6);
+                player.distanceTraveled = (float)(player.distanceTraveled + MathHelper.sqrt(difX * difX + difY * difY + difZ * difZ) * 0.6);
 
                 if (Pony.of(player).stepOnCloud()) {
                     BlockSoundGroup soundtype = BlockSoundGroup.WOOL;
@@ -343,15 +337,15 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
     protected void mobTick() {
         if (!getStationary()) {
             if (!hasVehicle()) {
-                double distance = targetAltitude - y;
+                double distance = targetAltitude - getY();
 
-                if (targetAltitude < y && !world.isAir(getBlockPos())) {
+                if (targetAltitude < getY() && !world.isAir(getBlockPos())) {
                     distance = 0;
                 }
 
                 if (Math.abs(distance) < 1 && random.nextInt(7000) == 0) {
                     targetAltitude = getRandomFlyingHeight();
-                    distance = targetAltitude - y;
+                    distance = targetAltitude - getY();
                 }
 
                 if (Math.abs(distance) < 1) {
@@ -449,10 +443,10 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
             } else if (stack != null && stack.getItem() instanceof ShovelItem) {
                 return super.damage(source, amount * 1.5f);
             } else if (canFly) {
-                if (player.y < y || !world.isAir(getBlockPos())) {
-                    targetAltitude = y + 5;
-                } else if (player.y > y) {
-                    targetAltitude = y - 5;
+                if (player.getY() < getY() || !world.isAir(getBlockPos())) {
+                    targetAltitude = getY() + 5;
+                } else if (player.getY() > getY()) {
+                    targetAltitude = getY() - 5;
                 }
             }
         }
@@ -610,7 +604,7 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
     }
 
     public void spawnThunderbolt() {
-        spawnThunderbolt(getGroundPosition(x, z));
+        spawnThunderbolt(getGroundPosition(getBlockPos()));
     }
 
     public void spawnThunderbolt(BlockPos pos) {
@@ -619,10 +613,10 @@ public class CloudEntity extends FlyingEntity implements ICloudEntity, InAnimate
         }
     }
 
-    private BlockPos getGroundPosition(double x, double z) {
-        BlockPos pos = world.getTopPosition(Heightmap.Type.WORLD_SURFACE, new BlockPos(x, y, z));
+    private BlockPos getGroundPosition(BlockPos inPos) {
+        BlockPos pos = world.getTopPosition(Heightmap.Type.WORLD_SURFACE, inPos);
 
-        if (pos.getY() >= y) {
+        if (pos.getY() >= getY()) {
             while (World.isValid(pos)) {
                 pos = pos.down();
                 if (world.getBlockState(pos).hasSolidTopSurface(world, pos, this)) {

src/main/java/com/minelittlepony/unicopia/entity/ConstructionCloudEntity.java

@@ -82,7 +82,7 @@ public class ConstructionCloudEntity extends CloudEntity {
         if (hit != null) {
             Direction direction = hit.getSide();
 
-            mc.hitResult = hit = new BlockHitResult(hit.getPos(), direction, new BlockPos(hit.getPos()), false);
+            mc.crosshairTarget = hit = new BlockHitResult(hit.getPos(), direction, new BlockPos(hit.getPos()), false);
 
             int oldCount = stack.getCount();
             ActionResult result = mc.interactionManager.interactBlock(((ClientPlayerEntity)player), (ClientWorld)player.world, hand, hit);

src/main/java/com/minelittlepony/unicopia/entity/CuccoonEntity.java

@@ -9,8 +9,8 @@ import com.minelittlepony.unicopia.EquinePredicates;
 import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.USounds;
 import com.minelittlepony.unicopia.entity.player.Pony;
+import com.minelittlepony.unicopia.particles.UParticles;
 import com.minelittlepony.unicopia.util.MagicalDamageSource;
-import com.minelittlepony.unicopia.util.particles.UParticles;
 
 import net.minecraft.block.Blocks;
 import net.minecraft.entity.Entity;
@@ -124,12 +124,12 @@ public class CuccoonEntity extends LivingEntity implements IMagicals, InAnimate
             if (passenger instanceof LivingEntity) {
                 LivingEntity living = (LivingEntity)passenger;
 
-                if (!living.hasStatusEffect(StatusEffects.REGENERATION) && living.getHealth() < living.getHealthMaximum()) {
-                    living.addPotionEffect(new StatusEffectInstance(StatusEffects.REGENERATION, 20, 2));
+                if (!living.hasStatusEffect(StatusEffects.REGENERATION) && living.getHealth() < living.getMaximumHealth()) {
+                    living.addStatusEffect(new StatusEffectInstance(StatusEffects.REGENERATION, 20, 2));
                 }
 
-                if (!living.hasStatusEffect(StatusEffects.SLOWNESS) && living.getHealth() < living.getHealthMaximum()) {
-                    living.addPotionEffect(new StatusEffectInstance(StatusEffects.SLOWNESS, 2000, 4));
+                if (!living.hasStatusEffect(StatusEffects.SLOWNESS) && living.getHealth() < living.getMaximumHealth()) {
+                    living.addStatusEffect(new StatusEffectInstance(StatusEffects.SLOWNESS, 2000, 4));
                 }
             }
         }
@@ -137,9 +137,9 @@ public class CuccoonEntity extends LivingEntity implements IMagicals, InAnimate
         if (world.isClient) {
             EntityDimensions dims = getDimensions(getPose());
 
-            double x = this.x + dims.width * random.nextFloat() - dims.width/2;
-            double y = this.y + dims.height * random.nextFloat();
-            double z = this.z + dims.width * random.nextFloat() - dims.width/2;
+            double x = getX() + dims.width * random.nextFloat() - dims.width/2;
+            double y = getY() + dims.height * random.nextFloat();
+            double z = getZ() + dims.width * random.nextFloat() - dims.width/2;
 
             world.addParticle(ParticleTypes.DRIPPING_LAVA, x, y, z, 0, 0, 0);
         }
@@ -153,22 +153,22 @@ public class CuccoonEntity extends LivingEntity implements IMagicals, InAnimate
             if (hasPassengers()) {
                 Entity passenger = getPrimaryPassenger();
 
-                if (player.canConsume(false) || player.getHealth() < player.getHealthMaximum()) {
+                if (player.canConsume(false) || player.getHealth() < player.getMaximumHealth()) {
                     DamageSource d = MagicalDamageSource.causePlayerDamage("feed", player);
 
                     Pony.of(player).spawnParticles(UParticles.CHANGELING_MAGIC, 7);
 
                     if (passenger instanceof LivingEntity) {
                         if (player.hasStatusEffect(StatusEffects.NAUSEA)) {
-                            ((LivingEntity)passenger).addPotionEffect(player.removePotionEffect(StatusEffects.NAUSEA));
+                            ((LivingEntity)passenger).addStatusEffect(player.removeStatusEffectInternal(StatusEffects.NAUSEA));
                         } else if (random.nextInt(2300) == 0) {
-                            ((LivingEntity)passenger).addPotionEffect(new StatusEffectInstance(StatusEffects.WITHER, 20, 1));
+                            ((LivingEntity)passenger).addStatusEffect(new StatusEffectInstance(StatusEffects.WITHER, 20, 1));
                         }
                     }
 
                     if (passenger instanceof PlayerEntity) {
                         if (!player.hasStatusEffect(StatusEffects.HEALTH_BOOST)) {
-                            player.addPotionEffect(new StatusEffectInstance(StatusEffects.HEALTH_BOOST, 13000, 1));
+                            player.addStatusEffect(new StatusEffectInstance(StatusEffects.HEALTH_BOOST, 13000, 1));
                         }
                     }
 
@@ -226,9 +226,9 @@ public class CuccoonEntity extends LivingEntity implements IMagicals, InAnimate
             double d1 = random.nextGaussian() * 0.02;
 
             world.addParticle(new BlockStateParticleEffect(ParticleTypes.BLOCK, Blocks.SLIME_BLOCK.getDefaultState()),
-                    x + random.nextFloat() * dims.width * 2 - dims.width,
-                    y + random.nextFloat() * dims.height,
-                    z + random.nextFloat() * dims.width * 2 - dims.width,
+                    getX() + random.nextFloat() * dims.width * 2 - dims.width,
+                    getY() + random.nextFloat() * dims.height,
+                    getZ() + random.nextFloat() * dims.width * 2 - dims.width,
                     d2, d0, d1);
         }
     }
@@ -244,7 +244,7 @@ public class CuccoonEntity extends LivingEntity implements IMagicals, InAnimate
 
                     i -= j;
 
-                    world.spawnEntity(new ExperienceOrbEntity(world, x, y, z, j));
+                    world.spawnEntity(new ExperienceOrbEntity(world, getX(), getY(), getZ(), j));
                 }
 
                 removeAllPassengers();
@@ -292,7 +292,7 @@ public class CuccoonEntity extends LivingEntity implements IMagicals, InAnimate
     }
 
     @Override
-    public void setEquippedStack(EquipmentSlot slot, ItemStack stack) {
+    public void equipStack(EquipmentSlot slot, ItemStack stack) {
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/entity/FollowCasterGoal.java

@@ -15,7 +15,7 @@ import net.minecraft.entity.mob.MobEntity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.MathHelper;
-import net.minecraft.world.ViewableWorld;
+import net.minecraft.world.WorldView;
 
 public class FollowCasterGoal<T extends MobEntity> extends Goal {
 
@@ -25,7 +25,7 @@ public class FollowCasterGoal<T extends MobEntity> extends Goal {
 
     protected LivingEntity owner;
 
-    protected final ViewableWorld world;
+    protected final WorldView world;
 
     public final double followSpeed;
 
@@ -79,15 +79,15 @@ public class FollowCasterGoal<T extends MobEntity> extends Goal {
     @Override
     public void start() {
         timeout = 0;
-        oldWaterCost = entity.getPathNodeTypeWeight(PathNodeType.WATER);
-        entity.setPathNodeTypeWeight(PathNodeType.WATER, 0);
+        oldWaterCost = entity.getPathfindingPenalty(PathNodeType.WATER);
+        entity.setPathfindingPenalty(PathNodeType.WATER, 0);
     }
 
     @Override
     public void stop() {
         owner = null;
         navigation.stop();
-        entity.setPathNodeTypeWeight(PathNodeType.WATER, oldWaterCost);
+        entity.setPathfindingPenalty(PathNodeType.WATER, oldWaterCost);
     }
 
     @Override
@@ -107,15 +107,15 @@ public class FollowCasterGoal<T extends MobEntity> extends Goal {
             return;
         }
 
-        int x = MathHelper.floor(owner.x) - 2;
-        int y = MathHelper.floor(owner.getBoundingBox().minY);
-        int z = MathHelper.floor(owner.z) - 2;
+        int x = MathHelper.floor(owner.getX()) - 2;
+        int y = MathHelper.floor(owner.getBoundingBox().y1);
+        int z = MathHelper.floor(owner.getZ()) - 2;
 
         for (int offX = 0; offX <= 4; offX++) {
             for (int offZ = 0; offZ <= 4; offZ++) {
                 if ((offX < 1 || offZ < 1 || offX > 3 || offZ > 3) && canMoveInto(new BlockPos(x + offX, y - 1, z + offZ))) {
 
-                    entity.setPositionAndAngles((x + offX) + 0.5F, y, (z + offZ) + 0.5F, entity.headYaw, entity.pitch);
+                    entity.updatePositionAndAngles((x + offX) + 0.5F, y, (z + offZ) + 0.5F, entity.headYaw, entity.pitch);
                     navigation.stop();
 
                     return;
@@ -131,4 +131,4 @@ public class FollowCasterGoal<T extends MobEntity> extends Goal {
                 && world.isAir(pos.up())
                 && world.isAir(pos.up(2));
     }
-}
+}

src/main/java/com/minelittlepony/unicopia/entity/LivingEntityCapabilities.java

@@ -115,7 +115,7 @@ public class LivingEntityCapabilities implements RaceContainer<LivingEntity>, Ca
 
     @Override
     public void fromNBT(CompoundTag compound) {
-        if (compound.containsKey("effect")) {
+        if (compound.contains("effect")) {
             setEffect(SpellRegistry.instance().createEffectFromNBT(compound.getCompound("effect")));
         }
     }

src/main/java/com/minelittlepony/unicopia/entity/ProjectileEntity.java

@@ -54,14 +54,14 @@ public class ProjectileEntity extends ThrownItemEntity implements IMagicals, Adv
     }
 
     public ProjectileEntity(EntityType<ProjectileEntity> type, World world, LivingEntity thrower) {
-        this(type, world, thrower.x, thrower.y + thrower.getStandingEyeHeight(), thrower.z);
+        this(type, world, thrower.getX(), thrower.getY() + thrower.getStandingEyeHeight(), thrower.getZ());
         setOwner(thrower);
     }
 
     public ProjectileEntity(EntityType<ProjectileEntity> type, World world, double x, double y, double z) {
         super(type, world);
 
-        setPosition(x, y, z);
+        setPos(x, y, z);
     }
 
     @Override
@@ -224,7 +224,7 @@ public class ProjectileEntity extends ThrownItemEntity implements IMagicals, Adv
           ParticleEffect effect = getParticleParameters();
 
           for(int i = 0; i < 8; i++) {
-             world.addParticle(effect, x, y, z, 0, 0, 0);
+             world.addParticle(effect, getX(), getY(), getZ(), 0, 0, 0);
           }
        }
 
@@ -234,7 +234,7 @@ public class ProjectileEntity extends ThrownItemEntity implements IMagicals, Adv
     public void readCustomDataFromTag(CompoundTag compound) {
         super.readCustomDataFromTag(compound);
 
-        if (compound.containsKey("effect")) {
+        if (compound.contains("effect")) {
             setEffect(SpellRegistry.instance().createEffectFromNBT(compound.getCompound("effect")));
         }
     }

src/main/java/com/minelittlepony/unicopia/entity/RainbowEntity.java

@@ -42,7 +42,7 @@ public class RainbowEntity extends Entity implements InAnimate {
 
         float yaw = (int)MathHelper.nextDouble(random, 0, 360);
 
-        setPositionAndAngles(0, 0, 0, yaw, 0);
+        updatePositionAndAngles(0, 0, 0, yaw, 0);
 
         radius = MathHelper.nextDouble(random, RAINBOW_MIN_SIZE, RAINBOW_MAX_SIZE);
         ticksAlive = 10000;
@@ -59,10 +59,8 @@ public class RainbowEntity extends Entity implements InAnimate {
     }
 
     @Override
-    public void setPosition(double x, double y, double z) {
-        this.x = x;
-        this.y = y;
-        this.z = z;
+    public void setPos(double x, double y, double z) {
+        super.setPos(x, y, z);
 
         float width = getDimensions(getPose()).width;
         setBoundingBox(new Box(
@@ -77,7 +75,7 @@ public class RainbowEntity extends Entity implements InAnimate {
     }
 
     @Override
-    public boolean shouldRenderAtDistance(double distance) {
+    public boolean shouldRender(double distance) {
         return true;
     }
 
@@ -96,8 +94,8 @@ public class RainbowEntity extends Entity implements InAnimate {
         if (!removed) {
             Box bounds = SPAWN_COLLISSION_RADIUS.offset(getPos());
 
-            world.getEntities(RainbowEntity.class, bounds).forEach(this::attackCompetitor);
-            world.getEntities(RainbowEntity.Spawner.class, bounds).forEach(this::attackCompetitor);
+            world.getEntities(RainbowEntity.class, bounds, null).forEach(this::attackCompetitor);
+            world.getEntities(RainbowEntity.Spawner.class, bounds, null).forEach(this::attackCompetitor);
         }
     }
 
@@ -137,8 +135,8 @@ public class RainbowEntity extends Entity implements InAnimate {
             Box bounds = SPAWN_COLLISSION_RADIUS.offset(getPos());
 
             return super.canSpawn(world, type)
-                    && world.getEntities(RainbowEntity.class, bounds).isEmpty()
-                    && world.getEntities(RainbowEntity.Spawner.class, bounds).isEmpty();
+                    && world.getEntities(RainbowEntity.class, bounds, null).isEmpty()
+                    && world.getEntities(RainbowEntity.Spawner.class, bounds, null).isEmpty();
         }
 
         @Override
@@ -157,7 +155,7 @@ public class RainbowEntity extends Entity implements InAnimate {
 
         public void trySpawnRainbow() {
             RainbowEntity rainbow = UEntities.RAINBOW.create(world);
-            rainbow.setPosition(x, y, z);
+            rainbow.setPos(getX(), getY(), getZ());
             world.spawnEntity(rainbow);
         }
     }
@@ -168,7 +166,7 @@ public class RainbowEntity extends Entity implements InAnimate {
         }
 
         @Override
-        public void method_11188(ClientPlayPacketListener listener) {
+        public void apply(ClientPlayPacketListener listener) {
             // TODO: Packet needs to be registered, and handling separated
             MinecraftClient client = MinecraftClient.getInstance();
 

src/main/java/com/minelittlepony/unicopia/entity/SpearEntity.java

@@ -67,8 +67,8 @@ public class SpearEntity extends ArrowEntity implements AdvancedProjectile {
     }
 
     @Override
-    public void method_7449(int amount) {
-        super.method_7449(amount);
+    public void setPunch(int amount) {
+        super.setPunch(amount);
         getDataTracker().set(KNOCKBACK, amount);
     }
 
@@ -99,7 +99,7 @@ public class SpearEntity extends ArrowEntity implements AdvancedProjectile {
                     LivingEntity target = (LivingEntity)entity;
 
                     if (!world.isClient) {
-                        target.setStuckArrows(target.getStuckArrows() + 1);
+                        target.setStuckArrowCount(target.getStuckArrowCount() + 1);
                     }
 
                     int knockback = getDataTracker().get(KNOCKBACK);
@@ -171,7 +171,7 @@ public class SpearEntity extends ArrowEntity implements AdvancedProjectile {
 
     @Override
     public void launch(Entity shooter, float pitch, float yaw, float pitchOffset, float velocity, float inaccuracy) {
-        method_7474(shooter, pitch, yaw, pitchOffset, velocity, inaccuracy);
+        setProperties(shooter, pitch, yaw, pitchOffset, velocity, inaccuracy);
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/entity/SpellbookEntity.java

@@ -4,7 +4,7 @@ import com.minelittlepony.unicopia.EquinePredicates;
 import com.minelittlepony.unicopia.item.UItems;
 
 import net.minecraft.container.Container;
-import net.minecraft.container.NameableContainerProvider;
+import net.minecraft.container.NameableContainerFactory;
 import net.minecraft.entity.EntityType;
 import net.minecraft.entity.damage.DamageSource;
 import net.minecraft.entity.data.DataTracker;
@@ -24,7 +24,7 @@ import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.GameRules;
 import net.minecraft.world.World;
 
-public class SpellbookEntity extends MobEntity implements NameableContainerProvider, IMagicals {
+public class SpellbookEntity extends MobEntity implements NameableContainerFactory, IMagicals {
 
     private static final TrackedData<Boolean> OPENED = DataTracker.registerData(SpellbookEntity.class, TrackedDataHandlerRegistry.BOOLEAN);
     private static final TrackedData<Boolean> ALTERED = DataTracker.registerData(SpellbookEntity.class, TrackedDataHandlerRegistry.BOOLEAN);
@@ -85,7 +85,7 @@ public class SpellbookEntity extends MobEntity implements NameableContainerProvi
     @Override
     public void tick() {
         boolean open = getIsOpen();
-        jumping = open && isInWater();
+        jumping = open && isTouchingWater();
         super.tick();
         if (open && world.isClient) {
 
@@ -98,7 +98,7 @@ public class SpellbookEntity extends MobEntity implements NameableContainerProvi
                     if (random.nextInt(320) == 0) {
                         for (int offY = 0; offY <= 1; ++offY) {
                             world.addParticle(ParticleTypes.ENCHANT,
-                                    x, y, z,
+                                    getX(), getY(), getZ(),
                                     offX/2F + random.nextFloat(),
                                     offY/2F - random.nextFloat() + 0.5f,
                                     offZ/2F + random.nextFloat()
@@ -110,7 +110,7 @@ public class SpellbookEntity extends MobEntity implements NameableContainerProvi
         }
 
         if (world.random.nextInt(30) == 0) {
-            float celest = world.getStarsBrightness(1) * 4;
+            float celest = world.getSkyAngleRadians(1) * 4;
 
             boolean isDay = celest > 3 || celest < 1;
 
@@ -136,7 +136,7 @@ public class SpellbookEntity extends MobEntity implements NameableContainerProvi
 
             BlockSoundGroup sound = BlockSoundGroup.WOOD;
 
-            world.playSound(x, y, z, sound.getBreakSound(), SoundCategory.BLOCKS, sound.getVolume(), sound.getPitch(), true);
+            world.playSound(getX(), getY(), getZ(), sound.getBreakSound(), SoundCategory.BLOCKS, sound.getVolume(), sound.getPitch(), true);
 
             if (world.getGameRules().getBoolean(GameRules.DO_TILE_DROPS)) {
                 dropItem(UItems.spellbook, 1);
@@ -178,7 +178,7 @@ public class SpellbookEntity extends MobEntity implements NameableContainerProvi
         super.readCustomDataFromTag(compound);
 
         setIsOpen(compound.getBoolean("open"));
-        setUserSetState(compound.containsKey("force_open") ? compound.getBoolean("force_open") : null);
+        setUserSetState(compound.contains("force_open") ? compound.getBoolean("force_open") : null);
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/entity/SpellcastEntity.java

@@ -79,14 +79,14 @@ public class SpellcastEntity extends MobEntityWithAi implements IMagicals, Caste
     }
 
     @Override
-    public boolean shouldRenderAtDistance(double distance) {
+    public boolean shouldRender(double distance) {
         if (getCurrentLevel() > 0) {
             distance /= getCurrentLevel();
         }
         if (distance > 0) {
             distance--;
         }
-        return super.shouldRenderAtDistance(distance);
+        return super.shouldRender(distance);
     }
 
     @Override
@@ -223,7 +223,7 @@ public class SpellcastEntity extends MobEntityWithAi implements IMagicals, Caste
                 } else if (world.random.nextInt((int)(exhaustionChance * 500)) == 0) {
                     setEffect(null);
                 } else if (world.random.nextInt((int)(exhaustionChance * 3500)) == 0) {
-                    world.createExplosion(this, x, y, z, getCurrentLevel()/2, DestructionType.BREAK);
+                    world.createExplosion(this, getX(), getY(), getZ(), getCurrentLevel()/2, DestructionType.BREAK);
                     remove();
                 }
             }
@@ -266,7 +266,7 @@ public class SpellcastEntity extends MobEntityWithAi implements IMagicals, Caste
     protected void onDeath() {
         BlockSoundGroup sound = BlockSoundGroup.STONE;
 
-        world.playSound(x, y, z, sound.getBreakSound(), SoundCategory.NEUTRAL, sound.getVolume(), sound.getPitch(), true);
+        world.playSound(getX(), getY(), getZ(), sound.getBreakSound(), SoundCategory.NEUTRAL, sound.getVolume(), sound.getPitch(), true);
 
         if (world.getGameRules().getBoolean(GameRules.DO_TILE_DROPS)) {
             int level = getCurrentLevel();
@@ -352,14 +352,14 @@ public class SpellcastEntity extends MobEntityWithAi implements IMagicals, Caste
     @Override
     public void readCustomDataFromTag(CompoundTag compound) {
         super.readCustomDataFromTag(compound);
-        if (compound.containsKey("affinity")) {
+        if (compound.contains("affinity")) {
             setAffinity(Affinity.of(compound.getString("affinity")));
         }
 
         setOwner(compound.getUuid("owner"));
         setCurrentLevel(compound.getInt("level"));
 
-        if (compound.containsKey("effect")) {
+        if (compound.contains("effect")) {
             setEffect(SpellRegistry.instance().createEffectFromNBT(compound.getCompound("effect")));
         }
     }

src/main/java/com/minelittlepony/unicopia/entity/WildCloudEntity.java

@@ -90,10 +90,10 @@ public class WildCloudEntity extends CloudEntity {
 
             targetAltitude = getRandomFlyingHeight();
 
-            if (y < minSpawnHeight) {
+            if (getY() < minSpawnHeight) {
                 minSpawnHeight += random.nextInt(Math.max(1,  (int)getMaximumFlyingHeight() - (int)minSpawnHeight));
 
-                setPositionAndAngles(x, minSpawnHeight - 1, z, yaw, pitch);
+                updatePositionAndAngles(getX(), minSpawnHeight - 1, getZ(), yaw, pitch);
                 moveToBoundingBoxCenter();
             }
 
@@ -115,7 +115,7 @@ public class WildCloudEntity extends CloudEntity {
             setIsRaining(packData.leader.getIsRaining());
             setIsThundering(packData.leader.getIsThundering());
 
-            setPositionAndAngles(position.x, position.y, position.z, packData.leader.yaw, packData.leader.pitch);
+            updatePositionAndAngles(position.x, position.y, position.z, packData.leader.yaw, packData.leader.pitch);
             checkBlockCollision();
         }
 

src/main/java/com/minelittlepony/unicopia/entity/player/AbilityDelegate.java

@@ -144,7 +144,7 @@ class AbilityDelegate implements AbilityReceiver, Updatable, NbtSerialisable {
         warmup = compound.getInt("warmup");
         cooldown = compound.getInt("cooldown");
 
-        if (compound.containsKey("activeAbility")) {
+        if (compound.contains("activeAbility")) {
             Abilities.getInstance()
                 .getPowerFromName(compound.getString("activeAbility"))
                 .ifPresent(p -> activeAbility = p);

src/main/java/com/minelittlepony/unicopia/entity/player/GravityDelegate.java

@@ -10,8 +10,8 @@ import com.minelittlepony.unicopia.entity.FlightControl;
 import com.minelittlepony.unicopia.entity.Updatable;
 import com.minelittlepony.unicopia.magic.MagicEffect;
 import com.minelittlepony.unicopia.mixin.MixinEntity;
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
 import com.minelittlepony.unicopia.util.NbtSerialisable;
-import com.minelittlepony.unicopia.util.particles.UParticles;
 import com.minelittlepony.unicopia.util.MutableVector;
 
 import net.minecraft.entity.Entity;
@@ -134,14 +134,14 @@ public class GravityDelegate implements Updatable, FlightControl, NbtSerialisabl
                         rnd.nextGaussian() * entity.getWidth()
                 );
 
-                player.addParticle(UParticles.UNICORN_MAGIC, pos, velocity.toImmutable());
+                player.addParticle(MagicParticleEffect.UNICORN, pos, velocity.toImmutable());
             }
         }
 
         entity.abilities.allowFlying = checkCanFly(player);
 
         if (!entity.abilities.creativeMode) {
-            entity.abilities.flying |= entity.abilities.allowFlying && isFlying && !entity.onGround && !entity.isInWater();
+            entity.abilities.flying |= entity.abilities.allowFlying && isFlying && !entity.onGround && !entity.isTouchingWater();
         }
 
         isFlying = entity.abilities.flying && !entity.abilities.creativeMode;
@@ -153,7 +153,7 @@ public class GravityDelegate implements Updatable, FlightControl, NbtSerialisabl
             }
 
             if (gravity < 0) {
-                entity.onGround = !entity.world.isAir(new BlockPos(entity.x, entity.y + entity.getHeight() + 0.5F, entity.z));
+                entity.onGround = !entity.world.isAir(new BlockPos(entity.getX(), entity.getY() + entity.getHeight() + 0.5F, entity.getZ()));
 
                 if (entity.onGround) {
                     entity.abilities.flying = false;
@@ -263,8 +263,8 @@ public class GravityDelegate implements Updatable, FlightControl, NbtSerialisabl
             }
         }
 
-        lastTickPosX = entity.x;
-        lastTickPosZ = entity.z;
+        lastTickPosX = entity.getX();
+        lastTickPosZ = entity.getZ();
 
         entity.setVelocity(velocity.toImmutable());
     }
@@ -325,8 +325,8 @@ public class GravityDelegate implements Updatable, FlightControl, NbtSerialisabl
     }
 
     protected double getHorizontalMotion(Entity e) {
-        double motionX = e.x - lastTickPosX;
-        double motionZ = e.z - lastTickPosZ;
+        double motionX = e.getX() - lastTickPosX;
+        double motionZ = e.getZ() - lastTickPosZ;
 
         return (motionX * motionX)
                + (motionZ * motionZ);
@@ -382,7 +382,7 @@ public class GravityDelegate implements Updatable, FlightControl, NbtSerialisabl
         isFlying = compound.getBoolean("isFlying");
         isRainbooming = compound.getBoolean("isRainbooming");
 
-        if (compound.containsKey("gravity")) {
+        if (compound.contains("gravity")) {
             gravity = compound.getFloat("gravity");
         } else {
             gravity = 0;

src/main/java/com/minelittlepony/unicopia/entity/player/PlayerImpl.java

@@ -327,8 +327,8 @@ public class PlayerImpl implements Pony {
 
     @Override
     public boolean stepOnCloud() {
-        if (entity.fallDistance > 1 || entity.distanceWalked > nextStepDistance) {
-            nextStepDistance = entity.distanceWalked + 2;
+        if (entity.fallDistance > 1 || entity.distanceTraveled > nextStepDistance) {
+            nextStepDistance = entity.distanceTraveled + 2;
             entity.fallDistance = 0;
 
             return true;
@@ -372,16 +372,16 @@ public class PlayerImpl implements Pony {
 
                 player.getHungerManager().add(-health/2, -saturation/2);
 
-                player.addPotionEffect(new StatusEffectInstance(StatusEffects.NAUSEA, 100, 3, true, true));
+                player.addStatusEffect(new StatusEffectInstance(StatusEffects.NAUSEA, 100, 3, true, true));
             } else {
-                player.addPotionEffect(new StatusEffectInstance(StatusEffects.NAUSEA, 200, 3, true, true));
+                player.addStatusEffect(new StatusEffectInstance(StatusEffects.NAUSEA, 200, 3, true, true));
             }
 
             if (player.world.getDifficulty() != Difficulty.PEACEFUL && player.world.random.nextInt(20) == 0) {
-                player.addPotionEffect(new StatusEffectInstance(UEffects.FOOD_POISONING, 3, 2, true, true));
+                player.addStatusEffect(new StatusEffectInstance(UEffects.FOOD_POISONING, 3, 2, true, true));
             }
 
-            player.addPotionEffect(new StatusEffectInstance(StatusEffects.WEAKNESS, 2000, 2, true, true));
+            player.addStatusEffect(new StatusEffectInstance(StatusEffects.WEAKNESS, 2000, 2, true, true));
         }
     }
 
@@ -408,7 +408,7 @@ public class PlayerImpl implements Pony {
         powers.fromNBT(compound.getCompound("powers"));
         gravity.fromNBT(compound.getCompound("gravity"));
 
-        if (compound.containsKey("effect")) {
+        if (compound.contains("effect")) {
             setEffect(SpellRegistry.instance().createEffectFromNBT(compound.getCompound("effect")));
         }
 

src/main/java/com/minelittlepony/unicopia/entity/player/PlayerPageStats.java

@@ -45,7 +45,7 @@ public class PlayerPageStats implements NbtSerialisable, PageOwner {
     @Override
     public void fromNBT(CompoundTag compound) {
         pageStates.clear();
-        if (compound.containsKey("pageStates")) {
+        if (compound.contains("pageStates")) {
             CompoundTag pages = compound.getCompound("pageStates");
 
             pages.getKeys().forEach(key -> {

src/main/java/com/minelittlepony/unicopia/gas/CloudAnvilBlock.java

@@ -5,13 +5,15 @@ import java.util.Random;
 import com.minelittlepony.unicopia.util.WorldEvent;
 
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
+import net.fabricmc.fabric.api.tools.FabricToolTags;
 import net.minecraft.block.AnvilBlock;
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Material;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.sound.BlockSoundGroup;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
@@ -19,23 +21,17 @@ import net.minecraft.world.BlockView;
 import net.minecraft.world.World;
 
 public class CloudAnvilBlock extends AnvilBlock implements Gas {
-    @SuppressWarnings("deprecation")
     public CloudAnvilBlock() {
         super(FabricBlockSettings.of(Material.WOOL)
                 .strength(0.025F, 1)
                 .resistance(2000)
-                .breakByTool(net.fabricmc.fabric.api.tools.FabricToolTags.SHOVELS, 0)
+                .breakByTool(FabricToolTags.SHOVELS, 0)
                 .sounds(BlockSoundGroup.WOOL)
                 .ticksRandomly()
                 .build()
         );
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return BlockRenderLayer.TRANSLUCENT;
-    }
-
     @Override
     public void onLandedUpon(World world, BlockPos pos, Entity entityIn, float fallDistance) {
         if (!applyLanding(entityIn, fallDistance)) {
@@ -54,8 +50,8 @@ public class CloudAnvilBlock extends AnvilBlock implements Gas {
     }
 
     @Override
-    public boolean activate(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-        return false;
+    public ActionResult onUse(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+        return ActionResult.PASS;
     }
 
     @Override
@@ -66,7 +62,7 @@ public class CloudAnvilBlock extends AnvilBlock implements Gas {
     }
 
     @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random rand) {
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random rand) {
         BlockState below = world.getBlockState(pos.down());
 
         if (below.getBlock() instanceof Gas) {
@@ -75,7 +71,7 @@ public class CloudAnvilBlock extends AnvilBlock implements Gas {
             }
         }
 
-        super.onScheduledTick(state, world, pos, rand);
+        super.scheduledTick(state, world, pos, rand);
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/gas/CloudBlock.java

@@ -7,15 +7,12 @@ import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.item.MossItem;
 import com.minelittlepony.unicopia.util.HoeUtil;
 
-import net.fabricmc.fabric.api.block.FabricBlockSettings;
 import net.minecraft.block.Block;
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
-import net.minecraft.block.Material;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.item.ItemUsageContext;
-import net.minecraft.sound.BlockSoundGroup;
+import net.minecraft.server.world.ServerWorld;
 import net.minecraft.util.math.Direction;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.BlockView;
@@ -25,10 +22,8 @@ public class CloudBlock extends Block implements Gas, HoeUtil.Tillable {
 
     private final CloudType variant;
 
-    public CloudBlock(Material material, CloudType variant) {
-        super(FabricBlockSettings.of(material)
-                .strength(0.5F, 1)
-                .sounds(BlockSoundGroup.WOOL)
+    public CloudBlock(CloudType variant) {
+        super(variant.configure()
                 .ticksRandomly()
                 .build()
         );
@@ -42,12 +37,7 @@ public class CloudBlock extends Block implements Gas, HoeUtil.Tillable {
     }
 
     @Override
-    public boolean isOpaque(BlockState state) {
-        return variant != CloudType.NORMAL;
-    }
-
-    @Override
-    public void onScheduledTick(BlockState state, World world, BlockPos pos, Random rand) {
+    public void scheduledTick(BlockState state, ServerWorld world, BlockPos pos, Random rand) {
         if (rand.nextInt(10) == 0) {
             pos = pos.offset(Direction.random(rand), 1 + rand.nextInt(2));
             state = world.getBlockState(pos);
@@ -60,11 +50,6 @@ public class CloudBlock extends Block implements Gas, HoeUtil.Tillable {
         }
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return variant == CloudType.NORMAL ? BlockRenderLayer.TRANSLUCENT : super.getRenderLayer();
-    }
-
     @Override
     public boolean isSideInvisible(BlockState state, BlockState beside, Direction face) {
         if (beside.getBlock() instanceof Gas) {

src/main/java/com/minelittlepony/unicopia/gas/CloudDoorBlock.java

@@ -4,11 +4,12 @@ import com.minelittlepony.unicopia.block.AbstractDoorBlock;
 import com.minelittlepony.unicopia.block.UMaterials;
 
 import net.fabricmc.fabric.api.block.FabricBlockSettings;
-import net.minecraft.block.BlockRenderLayer;
+import net.fabricmc.fabric.api.tools.FabricToolTags;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.sound.BlockSoundGroup;
+import net.minecraft.util.ActionResult;
 import net.minecraft.util.Hand;
 import net.minecraft.util.hit.BlockHitResult;
 import net.minecraft.util.math.BlockPos;
@@ -16,20 +17,21 @@ import net.minecraft.world.BlockView;
 import net.minecraft.world.World;
 
 public class CloudDoorBlock extends AbstractDoorBlock implements Gas {
-
-    @SuppressWarnings("deprecation")
     public CloudDoorBlock() {
         super(FabricBlockSettings.of(UMaterials.CLOUD)
                 .sounds(BlockSoundGroup.WOOL)
                 .hardness(3)
                 .resistance(200)
-                .breakByTool(net.fabricmc.fabric.api.tools.FabricToolTags.SHOVELS, 0)
+                .breakByTool(FabricToolTags.SHOVELS, 0)
                 .build());
     }
 
     @Override
-    public boolean activate(BlockState state, World worldIn, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
-        return getCanInteract(state, player) && super.activate(state, worldIn, pos, player, hand, hit);
+    public ActionResult onUse(BlockState state, World worldIn, BlockPos pos, PlayerEntity player, Hand hand, BlockHitResult hit) {
+        if (!getCanInteract(state, player)) {
+            return ActionResult.PASS;
+        }
+        return super.onUse(state, worldIn, pos, player, hand, hit);
     }
 
     @Deprecated
@@ -40,11 +42,6 @@ public class CloudDoorBlock extends AbstractDoorBlock implements Gas {
         return Math.max(hardness, Math.min(60, hardness + (pos.getY() - 100)));
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return BlockRenderLayer.TRANSLUCENT;
-    }
-
     @Override
     public void onEntityCollision(BlockState state, World w, BlockPos pos, Entity entity) {
         if (!applyBouncyness(state, entity)) {

src/main/java/com/minelittlepony/unicopia/gas/CloudFarmlandBlock.java

@@ -3,7 +3,6 @@ package com.minelittlepony.unicopia.gas;
 import com.minelittlepony.unicopia.block.UBlocks;
 import com.minelittlepony.unicopia.ducks.Farmland;
 
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.FarmlandBlock;
 import net.minecraft.entity.Entity;
@@ -20,11 +19,6 @@ public class CloudFarmlandBlock extends FarmlandBlock implements Farmland, Gas {
         super(settings);
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return BlockRenderLayer.TRANSLUCENT;
-    }
-
     @Override
     public boolean isSideInvisible(BlockState state, BlockState beside, Direction face) {
 

src/main/java/com/minelittlepony/unicopia/gas/CloudFenceBlock.java

@@ -1,13 +1,9 @@
 package com.minelittlepony.unicopia.gas;
 
-import net.fabricmc.fabric.api.block.FabricBlockSettings;
-import net.minecraft.block.BlockRenderLayer;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.FenceBlock;
-import net.minecraft.block.Material;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.PlayerEntity;
-import net.minecraft.sound.BlockSoundGroup;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.BlockView;
 import net.minecraft.world.World;
@@ -16,13 +12,8 @@ public class CloudFenceBlock extends FenceBlock implements Gas {
 
     private final CloudType variant;
 
-    public CloudFenceBlock(Material material, CloudType variant) {
-        super(FabricBlockSettings.of(material)
-                .hardness(0.5F)
-                .resistance(1)
-                .sounds(BlockSoundGroup.WOOL)
-                .build());
-
+    public CloudFenceBlock(CloudType variant) {
+        super(variant.configure().build());
         this.variant = variant;
     }
 
@@ -31,21 +22,11 @@ public class CloudFenceBlock extends FenceBlock implements Gas {
         return variant == CloudType.NORMAL;
     }
 
-    @Override
-    public boolean isOpaque(BlockState state) {
-        return false;
-    }
-
     @Override
     public CloudType getCloudMaterialType(BlockState blockState) {
         return variant;
     }
 
-    @Override
-    public BlockRenderLayer getRenderLayer() {
-        return BlockRenderLayer.TRANSLUCENT;
-    }
-
     @Override
     public void onLandedUpon(World world, BlockPos pos, Entity entityIn, float fallDistance) {
         if (!applyLanding(entityIn, fallDistance)) {

src/main/java/com/minelittlepony/unicopia/gas/CloudType.java

@@ -1,17 +1,30 @@
 package com.minelittlepony.unicopia.gas;
 
 import com.minelittlepony.unicopia.EquinePredicates;
+import com.minelittlepony.unicopia.block.UMaterials;
 import com.minelittlepony.unicopia.entity.CloudEntity;
 
+import net.fabricmc.fabric.api.block.FabricBlockSettings;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.ItemEntity;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.sound.BlockSoundGroup;
 
 public enum CloudType {
     NORMAL,
     PACKED,
     ENCHANTED;
 
+    public FabricBlockSettings configure() {
+        FabricBlockSettings settings = FabricBlockSettings.of(UMaterials.CLOUD)
+                .strength(0.5F, 1)
+                .sounds(BlockSoundGroup.WOOL);
+        if (this != NORMAL ) {
+            settings.nonOpaque();
+        }
+        return settings;
+    }
+
     public boolean canInteract(Entity e) {
         if (e == null) {
             return false;

src/main/java/com/minelittlepony/unicopia/item/AlicornAmuletItem.java

@@ -73,9 +73,9 @@ public class AlicornAmuletItem extends ArmorItem implements AddictiveMagicalItem
 
         World world = entity.world;
 
-        double x = entity.x + world.random.nextFloat() - 0.5;
-        double z = entity.z + world.random.nextFloat() - 0.5;
-        double y = entity.y + world.random.nextFloat();
+        double x = entity.getX() + world.random.nextFloat() - 0.5;
+        double z = entity.getY() + world.random.nextFloat() - 0.5;
+        double y = entity.getZ() + world.random.nextFloat();
 
         ParticleEffect particle = world.random.nextBoolean() ? ParticleTypes.LARGE_SMOKE : ParticleTypes.FLAME;
 
@@ -138,7 +138,7 @@ public class AlicornAmuletItem extends ArmorItem implements AddictiveMagicalItem
 
         int hideFlags = 0;
 
-        if (!compound.containsKey("HideFlags") || ((hideFlags = compound.getInt("HideFlags")) & 2) == 0) {
+        if (!compound.contains("HideFlags") || ((hideFlags = compound.getInt("HideFlags")) & 2) == 0) {
             compound.putInt("HideFlags", hideFlags | 2);
         }
 
@@ -153,7 +153,7 @@ public class AlicornAmuletItem extends ArmorItem implements AddictiveMagicalItem
 
         PlayerEntity player = (PlayerEntity)entity;
 
-        if (player.getHealth() < player.getHealthMaximum()) {
+        if (player.getHealth() < player.getMaximumHealth()) {
             player.heal(0.5F);
         } else if (player.canConsume(false)) {
             player.getHungerManager().add(1, 0);
@@ -210,7 +210,7 @@ public class AlicornAmuletItem extends ArmorItem implements AddictiveMagicalItem
         if (stack.getDamage() >= getMaxDamage() - 1) {
             stack.damage(10, player, p -> p.sendEquipmentBreakStatus(EquipmentSlot.CHEST));
 
-            player.damage(MagicalDamageSource.ALICORN_AMULET, player.getHealthMaximum() - 0.01F);
+            player.damage(MagicalDamageSource.ALICORN_AMULET, player.getMaximumHealth() - 0.01F);
             player.getHungerManager().setFoodLevel(1);
 
             Vec3d pos = player.getPos();
@@ -233,7 +233,7 @@ public class AlicornAmuletItem extends ArmorItem implements AddictiveMagicalItem
         LocalDifficulty difficulty = player.getWorld().getLocalDifficulty(player.getOrigin());
         float amount = (attachedTime * (1 + needfulness)) * (1 + difficulty.getClampedLocalDifficulty());
 
-        amount = Math.min(amount, player.getOwner().getHealthMaximum());
+        amount = Math.min(amount, player.getOwner().getMaximumHealth());
 
         player.getOwner().damage(MagicalDamageSource.ALICORN_AMULET, amount);
 

src/main/java/com/minelittlepony/unicopia/item/AppleItem.java

@@ -92,7 +92,7 @@ public class AppleItem extends Item implements Toxic, ItemEntityCapabilities.Tic
                 float bob = MathHelper.sin(((float)item.getAge() + 1) / 10F + entity.hoverHeight) * 0.1F + 0.1F;
 
                 for (int i = 0; i < 3; i++) {
-                    entity.world.addParticle(ParticleTypes.AMBIENT_ENTITY_EFFECT, entity.x, entity.y + bob, entity.z,
+                    entity.world.addParticle(ParticleTypes.AMBIENT_ENTITY_EFFECT, entity.getX(), entity.getY() + bob, entity.getZ(),
                             entity.world.random.nextGaussian() - 0.5F,
                             entity.world.random.nextGaussian() - 0.5F,
                             entity.world.random.nextGaussian() - 0.5F);

src/main/java/com/minelittlepony/unicopia/item/BagOfHoldingItem.java

@@ -16,7 +16,7 @@ import com.minelittlepony.unicopia.util.VecHelper;
 import net.fabricmc.fabric.api.container.ContainerProviderRegistry;
 import net.minecraft.block.entity.BlockEntity;
 import net.minecraft.client.item.TooltipContext;
-import net.minecraft.container.NameableContainerProvider;
+import net.minecraft.container.NameableContainerFactory;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.ItemEntity;
 import net.minecraft.entity.player.PlayerEntity;
@@ -122,7 +122,7 @@ public class BagOfHoldingItem extends Item implements MagicalItem {
         return Affinity.NEUTRAL;
     }
 
-    public static class ContainerProvider implements NameableContainerProvider {
+    public static class ContainerProvider implements NameableContainerFactory {
 
         private Text customname = null;
 

src/main/java/com/minelittlepony/unicopia/item/CloudPlacerItem.java

@@ -36,7 +36,7 @@ public class CloudPlacerItem extends Item implements Dispensable {
 
     public void placeCloud(World world, BlockPos pos) {
         CloudEntity cloud = cloudSupplier.create(world);
-        cloud.setPositionAndAngles(pos, 0, 0);
+        cloud.refreshPositionAndAngles(pos, 0, 0);
         world.spawnEntity(cloud);
     }
 

src/main/java/com/minelittlepony/unicopia/item/RottenTomatoItem.java

@@ -54,7 +54,7 @@ public class RottenTomatoItem extends TomatoItem implements TossableItem {
                 duration += Math.max(0, effect.getDuration());
             }
 
-            entity.addPotionEffect(new StatusEffectInstance(StatusEffects.NAUSEA, duration, 4));
+            entity.addStatusEffect(new StatusEffectInstance(StatusEffects.NAUSEA, duration, 4));
 
         }
         return entity.eatFood(world, stack);

src/main/java/com/minelittlepony/unicopia/item/SpellbookItem.java

@@ -40,8 +40,8 @@ public class SpellbookItem extends BookItem implements Dispensable {
         if (!context.getWorld().isClient && EquinePredicates.MAGI.test(player)) {
             BlockPos pos = context.getBlockPos().offset(context.getSide());
 
-            double diffX = player.x - (pos.getX() + 0.5);
-            double diffZ = player.z - (pos.getZ() + 0.5);
+            double diffX = player.getX() - (pos.getX() + 0.5);
+            double diffZ = player.getZ() - (pos.getZ() + 0.5);
             float yaw = (float)Math.toDegrees(Math.atan2(diffZ, diffX) + Math.PI);
 
             placeBook(context.getWorld(), pos.getX(), pos.getY(), pos.getZ(), yaw);
@@ -58,8 +58,7 @@ public class SpellbookItem extends BookItem implements Dispensable {
     private static void placeBook(World world, int x, int y, int z, float yaw) {
         SpellbookEntity book = UEntities.SPELLBOOK.create(world);
 
-        book.setPositionAndAngles(x + 0.5, y, z + 0.5, yaw, 0);
-        //book.renderYawOffset = 0;
+        book.updatePositionAndAngles(x + 0.5, y, z + 0.5, yaw, 0);
         book.prevYaw = yaw;
 
         world.spawnEntity(book);

src/main/java/com/minelittlepony/unicopia/item/StaffItem.java

@@ -44,9 +44,9 @@ public class StaffItem extends SwordItem {
 
         for (int i = 0; i < 130; i++) {
             w.addParticle(new BlockStateParticleEffect(ParticleTypes.BLOCK, Blocks.OAK_LOG.getDefaultState()),
-                    target.x + (target.world.random.nextFloat() - 0.5F) * (dims.width + 1),
-                    (target.y + dims.height / 2) + (target.world.random.nextFloat() - 0.5F) * dims.height,
-                    target.z + (target.world.random.nextFloat() - 0.5F) * (dims.width + 1),
+                    target.getX() + (target.world.random.nextFloat() - 0.5F) * (dims.width + 1),
+                    (target.getY() + dims.height / 2) + (target.world.random.nextFloat() - 0.5F) * dims.height,
+                    target.getZ() + (target.world.random.nextFloat() - 0.5F) * (dims.width + 1),
                     0, 0, 0
             );
         }

src/main/java/com/minelittlepony/unicopia/item/StickItem.java

@@ -44,7 +44,7 @@ public class StickItem extends Item {
             ItemStack itemstack = context.getStack();
 
             if (player instanceof ServerPlayerEntity) {
-                Criterions.PLACED_BLOCK.handle((ServerPlayerEntity)player, pos.up(), itemstack);
+                Criterions.PLACED_BLOCK.trigger((ServerPlayerEntity)player, pos.up(), itemstack);
             }
 
             if (player == null || !player.abilities.creativeMode) {

src/main/java/com/minelittlepony/unicopia/item/TomatoItem.java

@@ -23,7 +23,7 @@ public class TomatoItem extends Item {
     @Override
     public ItemStack finishUsing(ItemStack stack, World world, LivingEntity entity) {
         stack = super.finishUsing(stack, world, entity);
-        entity.removePotionEffect(StatusEffects.NAUSEA);
+        entity.removeStatusEffect(StatusEffects.NAUSEA);
         return stack;
     }
 

src/main/java/com/minelittlepony/unicopia/item/UEffects.java

@@ -20,7 +20,7 @@ public interface UEffects {
                     StatusEffectInstance foodEffect = e.getStatusEffect(p);
                     nausea = new StatusEffectInstance(StatusEffects.NAUSEA, foodEffect.getDuration(), foodEffect.getAmplifier(), foodEffect.isAmbient(), foodEffect.shouldShowParticles());
 
-                    e.addPotionEffect(nausea);
+                    e.addStatusEffect(nausea);
                 }
 
                 e.damage(MagicalDamageSource.FOOD_POISONING, i);

src/main/java/com/minelittlepony/unicopia/item/ZapAppleItem.java

@@ -74,7 +74,7 @@ public class ZapAppleItem extends AppleItem {
         player.damage(MagicalDamageSource.ZAP_APPLE, 120);
 
         if (w instanceof ServerWorld) {
-            ((ServerWorld) w).addLightning(new LightningEntity(w, player.x, player.y, player.z, false));
+            ((ServerWorld) w).addLightning(new LightningEntity(w, player.getX(), player.getY(), player.getZ(), false));
         }
 
         return stack;
@@ -87,7 +87,7 @@ public class ZapAppleItem extends AppleItem {
     }
 
     public TypedActionResult<ItemStack> onFedTo(ItemStack stack, PlayerEntity player, Entity e) {
-        e.onStruckByLightning(new LightningEntity(e.world, e.x, e.y, e.z, false));
+        e.onStruckByLightning(new LightningEntity(e.world, e.getX(), e.getY(), e.getZ(), false));
 
         if (!player.abilities.creativeMode) {
             stack.decrement(1);
@@ -105,7 +105,7 @@ public class ZapAppleItem extends AppleItem {
     }
 
     public Item getAppearance(ItemStack stack) {
-        if (stack.hasTag() && stack.getTag().containsKey("appearance")) {
+        if (stack.hasTag() && stack.getTag().contains("appearance")) {
             return Registry.ITEM.get(new Identifier(stack.getTag().getString("appearance")));
         }
 

src/main/java/com/minelittlepony/unicopia/magic/Castable.java

@@ -49,7 +49,7 @@ public interface Castable extends MagicalItem, Dispensable {
         SpellcastEntity spell = new SpellcastEntity(null, world);
 
         spell.setAffinity(getAffinity(stack));
-        spell.setPositionAndAngles(pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5, 0, 0);
+        spell.updatePositionAndAngles(pos.getX() + 0.5, pos.getY() + 0.5, pos.getZ() + 0.5, 0, 0);
         spell.setEffect(effect);
 
         world.spawnEntity(spell);

src/main/java/com/minelittlepony/unicopia/magic/Caster.java

@@ -7,8 +7,8 @@ import java.util.stream.Stream;
 import javax.annotation.Nullable;
 
 import com.minelittlepony.unicopia.entity.Owned;
+import com.minelittlepony.unicopia.particles.ParticleSource;
 import com.minelittlepony.unicopia.util.VecHelper;
-import com.minelittlepony.unicopia.util.particles.ParticleSource;
 
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.LivingEntity;

src/main/java/com/minelittlepony/unicopia/magic/TossedMagicEffect.java

@@ -46,7 +46,7 @@ public interface TossedMagicEffect extends MagicEffect, Tossable<Caster<?>> {
 
         Entity entity = caster.getOwner();
 
-        world.playSound(null, entity.x, entity.y, entity.z, getThrowSound(caster), SoundCategory.NEUTRAL, 0.7F, 0.4F / (world.random.nextFloat() * 0.4F + 0.8F));
+        world.playSound(null, entity.getX(), entity.getY(), entity.getZ(), getThrowSound(caster), SoundCategory.NEUTRAL, 0.7F, 0.4F / (world.random.nextFloat() * 0.4F + 0.8F));
 
         if (caster.isLocal()) {
             AdvancedProjectile projectile = new ProjectileEntity(null, world, caster.getOwner());

src/main/java/com/minelittlepony/unicopia/magic/spell/AbstractAttachableSpell.java

@@ -105,7 +105,7 @@ public abstract class AbstractAttachableSpell extends AbstractSpell {
     public void fromNBT(CompoundTag compound) {
         super.fromNBT(compound);
 
-        if (compound.containsKey("target")) {
+        if (compound.contains("target")) {
             targettedEntityId = compound.getUuid("target");
         }
     }

src/main/java/com/minelittlepony/unicopia/magic/spell/AttractiveSpell.java

@@ -3,8 +3,8 @@ package com.minelittlepony.unicopia.magic.spell;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.magic.Affinity;
 import com.minelittlepony.unicopia.magic.Caster;
+import com.minelittlepony.unicopia.particles.MagicParticleEffect;
 import com.minelittlepony.unicopia.util.MagicalDamageSource;
-import com.minelittlepony.unicopia.util.particles.UParticles;
 import com.minelittlepony.unicopia.util.shape.Sphere;
 
 import net.minecraft.entity.Entity;
@@ -35,7 +35,7 @@ public class AttractiveSpell extends ShieldSpell {
         Vec3d pos = source.getOriginVector();
 
         source.spawnParticles(new Sphere(false, range), range * 9, p -> {
-            source.addParticle(UParticles.UNICORN_MAGIC, p, p.subtract(pos)); // getTint()
+            source.addParticle(new MagicParticleEffect(getTint()), p, p.subtract(pos));
         });
     }