Fix up spells slightly

src/main/java/com/minelittlepony/unicopia/Predicates.java

@@ -12,12 +12,12 @@ public final class Predicates {
         return player != null && PlayerSpeciesList.instance().getPlayer(player).getPlayerSpecies().canInteractWithClouds();
     };
 
-    public static final Predicate<EntityPlayer> MAGI = player -> {
+    public static final Predicate<Entity> MAGI = entity -> {
-        return player != null && PlayerSpeciesList.instance().getPlayer(player).getPlayerSpecies().canCast();
+        return entity instanceof EntityPlayer && PlayerSpeciesList.instance().getPlayer((EntityPlayer)entity).getPlayerSpecies().canCast();
     };
 
     public static final Predicate<Entity> ITEMS = entity -> {
-        return entity.isEntityAlive() && entity instanceof EntityItem;
+        return entity instanceof EntityItem && entity.isEntityAlive();
     };
 
     public static final Predicate<EntityItem> ITEM_INTERACT_WITH_CLOUDS = item -> {

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

@@ -1,10 +1,13 @@
 package com.minelittlepony.unicopia.entity;
 
+import org.apache.commons.lang3.StringUtils;
+
 import com.minelittlepony.unicopia.Predicates;
 import com.minelittlepony.unicopia.UItems;
-import com.minelittlepony.unicopia.item.ItemSpell;
+import com.minelittlepony.unicopia.item.ICastable;
 import com.minelittlepony.unicopia.network.EffectSync;
 import com.minelittlepony.unicopia.spell.ICaster;
+import com.minelittlepony.unicopia.spell.ILevelled;
 import com.minelittlepony.unicopia.spell.IMagicEffect;
 import com.minelittlepony.unicopia.spell.SpellRegistry;
 
@@ -28,7 +31,7 @@ import net.minecraft.util.SoundCategory;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
 
-public class EntitySpell extends EntityLiving implements IMagicals, ICaster<EntityLivingBase> {
+public class EntitySpell extends EntityLiving implements IMagicals, ICaster<EntityLivingBase>, ILevelled {
 
 	private EntityLivingBase owner = null;
 
@@ -102,7 +105,7 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 	}
 
 	protected void setOwner(String ownerName) {
-		if (ownerName != null && ownerName.length() != 0) {
+		if (!StringUtils.isEmpty(ownerName)) {
 			dataManager.set(OWNER, ownerName);
 		}
 	}
@@ -110,7 +113,7 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 	protected String getOwnerName() {
 		String ownerName = dataManager.get(OWNER);
 
-		if (ownerName == null || ownerName.length() == 0) {
+		if (!StringUtils.isEmpty(ownerName)) {
 			if (owner instanceof EntityPlayer) {
 				return owner.getName();
 			}
@@ -135,7 +138,7 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 
 	protected void displayTick() {
 		if (hasEffect()) {
-		    getEffect().renderAt(this, world, posX, posY, posZ, getLevel());
+		    getEffect().render(this, getCurrentLevel());
 		}
 	}
 
@@ -152,7 +155,7 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 				setDead();
 				onDeath();
 			} else {
-			    getEffect().updateAt(this, world, posX, posY, posZ, getLevel());
+			    getEffect().update(this, getCurrentLevel());
 			}
 
 			if (getEffect().allowAI()) {
@@ -186,7 +189,7 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 		world.playSound(posX, posY, posZ, sound.getBreakSound(), SoundCategory.NEUTRAL, sound.getVolume(), sound.getPitch(), true);
 
 		if (world.getGameRules().getBoolean("doTileDrops")) {
-			int level = getLevel();
+			int level = getCurrentLevel();
 
 			ItemStack stack = new ItemStack(UItems.spell, level + 1);
 			if (hasEffect()) {
@@ -204,44 +207,14 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 		super.setDead();
 	}
 
-	public int getLevel() {
-		return dataManager.get(LEVEL);
-	}
-
-	public void setLevel(int radius) {
-		dataManager.set(LEVEL, radius);
-	}
-
-	public boolean tryLevelUp(ItemStack stack) {
-
-		if (SpellRegistry.stackHasEnchantment(stack)) {
-		    if (!getEffect().getName().equals(SpellRegistry.getKeyFromStack(stack))) {
-		        return false;
-		    }
-
-			increaseLevel();
-
-			if (!world.isRemote) {
-				if ((rand.nextFloat() * getLevel()) > 10 || overLevelCap()) {
-					world.createExplosion(this, posX, posY, posZ, getLevel()/2, true);
-					setDead();
-					return false;
-				}
-            }
-
-			playSound(SoundEvents.ENTITY_ZOMBIE_VILLAGER_CURE, 0.1f, 1);
-
-			return true;
-		}
-		return false;
-	}
-
 	public EnumActionResult applyPlayerInteraction(EntityPlayer player, Vec3d vec, EnumHand hand) {
 		if (Predicates.MAGI.test(player)) {
 			ItemStack currentItem = player.getHeldItem(EnumHand.MAIN_HAND);
 
-			if (currentItem != null && currentItem.getItem() instanceof ItemSpell) {
+			if (currentItem != null
-				tryLevelUp(currentItem);
+			        && currentItem.getItem() instanceof ICastable
+			        && ((ICastable)currentItem.getItem()).canFeed(this, currentItem)
+			        && tryLevelUp(currentItem)) {
 
 				if (!player.capabilities.isCreativeMode) {
 					currentItem.shrink(1);
@@ -258,24 +231,48 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 		return EnumActionResult.FAIL;
 	}
 
-	public void increaseLevel() {
+    public boolean tryLevelUp(ItemStack stack) {
-		setLevel(getLevel() + 1);
+        if (SpellRegistry.stackHasEnchantment(stack)) {
+            if (!getEffect().getName().equals(SpellRegistry.getKeyFromStack(stack))) {
+                return false;
+            }
+
+            addLevels(1);
+
+            if (!world.isRemote) {
+                if ((rand.nextFloat() * getCurrentLevel()) > 10 || overLevelCap()) {
+                    world.createExplosion(this, posX, posY, posZ, getCurrentLevel()/2, true);
+                    setDead();
+                    return false;
+                }
+            }
+
+            playSound(SoundEvents.ENTITY_ZOMBIE_VILLAGER_CURE, 0.1f, 1);
+
+            return true;
+        }
+
+        return false;
+    }
+
+	@Override
+	public int getMaxLevel() {
+	    return getEffect().getMaxLevel();
 	}
 
-	public boolean canLevelUp() {
+	@Override
-		int max = getEffect().getMaxLevel();
+    public int getCurrentLevel() {
-		return max < 0 || getLevel() < max;
+        return dataManager.get(LEVEL);
-	}
+    }
+
+	@Override
+    public void setCurrentLevel(int level) {
+        dataManager.set(LEVEL, Math.min(level, 0));
+    }
 
 	public boolean overLevelCap() {
-		int max = getEffect().getMaxLevel();
+		int max = getMaxLevel();
-		return max > 0 && getLevel() >= (max * 1.1);
+		return max > 0 && getCurrentLevel() >= (max * 1.1);
-	}
-
-	public void decreaseLevel() {
-		int level = getLevel() - 1;
-		if (level < 0) level = 0;
-		setLevel(level);
 	}
 
 	@Override
@@ -287,7 +284,7 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 	public void readEntityFromNBT(NBTTagCompound compound) {
 		super.readEntityFromNBT(compound);
 		setOwner(compound.getString("ownerName"));
-        setLevel(compound.getInteger("level"));
+        setCurrentLevel(compound.getInteger("level"));
 
 		if (compound.hasKey("effect")) {
 		    setEffect(SpellRegistry.instance().createEffectFromNBT(compound.getCompoundTag("effect")));
@@ -299,7 +296,7 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 		super.writeEntityToNBT(compound);
 
         compound.setString("ownerName", getOwnerName());
-        compound.setInteger("level", getLevel());
+        compound.setInteger("level", getCurrentLevel());
 
         if (hasEffect()) {
 			compound.setTag("effect", SpellRegistry.instance().serializeEffectToNBT(getEffect()));

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

@@ -1,5 +1,6 @@
 package com.minelittlepony.unicopia.item;
 
+import com.minelittlepony.unicopia.entity.EntitySpell;
 import com.minelittlepony.unicopia.spell.IDispenceable;
 import com.minelittlepony.unicopia.spell.IMagicEffect;
 import com.minelittlepony.unicopia.spell.SpellCastResult;
@@ -16,4 +17,7 @@ public interface ICastable extends IMagicalItem {
     SpellCastResult onDispenseSpell(IBlockSource source, ItemStack stack, IDispenceable effect);
 
     SpellCastResult onCastSpell(EntityPlayer player, World world, BlockPos pos, ItemStack stack, IMagicEffect effect, EnumFacing side, float hitX, float hitY, float hitZ);
+
+    boolean canFeed(EntitySpell spell, ItemStack stack);
+
 }

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

@@ -180,4 +180,12 @@ public class ItemSpell extends Item implements ICastable {
 
     	return spell;
 	}
+
+    @Override
+    public boolean canFeed(EntitySpell entity, ItemStack stack) {
+
+        IMagicEffect effect = entity.getEffect();
+
+        return effect != null && effect.getName().equals(SpellRegistry.getKeyFromStack(stack));
+    }
 }

src/main/java/com/minelittlepony/unicopia/model/ModelGem.java

@@ -80,8 +80,8 @@ public class ModelGem extends ModelBase {
         GlStateManager.translate(0, floatOffset, 0);
 
         floatOffset = (spell.ticksExisted + stutter) / 20;
-        if (spell.getLevel() > 0) {
+        if (spell.getCurrentLevel() > 0) {
-        	floatOffset *= spell.getLevel() + 1;
+        	floatOffset *= spell.getCurrentLevel() + 1;
         }
 
         floatOffset += spell.hoverStart;

src/main/java/com/minelittlepony/unicopia/player/PlayerCapabilities.java

@@ -139,10 +139,10 @@ class PlayerCapabilities implements IPlayer, ICaster<EntityPlayer> {
                 setEffect(null);
             } else {
                 if (entity.getEntityWorld().isRemote) { //  && entity.getEntityWorld().getWorldTime() % 10 == 0
-                    getEffect().render(entity);
+                    getEffect().render(this);
                 }
 
-                if (!getEffect().update(entity)) {
+                if (!getEffect().update(this)) {
                     setEffect(null);
                 }
             }

src/main/java/com/minelittlepony/unicopia/spell/AbstractSpell.java

@@ -1,8 +1,5 @@
 package com.minelittlepony.unicopia.spell;
 
-import net.minecraft.entity.Entity;
-import net.minecraft.world.World;
-
 public abstract class AbstractSpell implements IMagicEffect {
 
 	protected boolean isDead = false;
@@ -16,14 +13,4 @@ public abstract class AbstractSpell implements IMagicEffect {
 	public boolean getDead() {
 		return isDead;
 	}
-
-	@Override
-	public boolean update(Entity source) {
-		return false;
-	}
-
-	@Override
-	public boolean updateAt(ICaster<?> source, World w, double x, double y, double z, int level) {
-		return false;
-	}
 }

src/main/java/com/minelittlepony/unicopia/spell/ICaster.java

@@ -4,6 +4,8 @@ import com.minelittlepony.unicopia.player.IOwned;
 
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityLivingBase;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.World;
 
 public interface ICaster<E extends EntityLivingBase> extends IOwned<E> {
     void setEffect(IMagicEffect effect);
@@ -20,4 +22,12 @@ public interface ICaster<E extends EntityLivingBase> extends IOwned<E> {
     default Entity getEntity() {
         return getOwner();
     }
+
+    default World getWorld() {
+        return getEntity().getEntityWorld();
+    }
+
+    default BlockPos getOrigin() {
+        return getEntity().getPosition();
+    }
 }

src/main/java/com/minelittlepony/unicopia/spell/ILevelled.java

@@ -0,0 +1,26 @@
+package com.minelittlepony.unicopia.spell;
+
+public interface ILevelled {
+
+    /**
+     * Maximum level this spell can reach or -1 for unlimited.
+     * <br>
+     * If a gem goes past this level it is more likely to explode.
+     */
+    default int getMaxLevel() {
+        return 0;
+    }
+
+    default boolean canLevelUp() {
+        int max = getMaxLevel();
+        return max < 0 || getCurrentLevel() < max;
+    }
+
+    int getCurrentLevel();
+
+    void setCurrentLevel(int level);
+
+    default void addLevels(int levels) {
+        setCurrentLevel(getCurrentLevel() + levels);
+    }
+}

src/main/java/com/minelittlepony/unicopia/spell/IMagicEffect.java

@@ -2,24 +2,10 @@ package com.minelittlepony.unicopia.spell;
 
 import com.minelittlepony.unicopia.InbtSerialisable;
 
-import net.minecraft.entity.Entity;
-import net.minecraft.world.World;
-
 /**
- *
+ * Interface for a magic spells
- * Interface for a magic spell
- *
  */
-public interface IMagicEffect extends InbtSerialisable {
+public interface IMagicEffect extends InbtSerialisable, ILevelled {
-
-	/**
-	 * Maximum level this spell can reach or -1 for unlimited.
-	 * <br>
-	 * If a gem goes past this level it is more likely to explode.
-	 */
-	default int getMaxLevel() {
-	    return 0;
-	}
 
 	String getName();
 
@@ -39,42 +25,34 @@ public interface IMagicEffect extends InbtSerialisable {
 	 * @param source	The entity we are currently attached to.
 	 * @return true to keep alive
 	 */
-	boolean update(Entity source);
+	boolean update(ICaster<?> caster);
-
-	/**
-	 * Called every tick when attached to a player. Used to apply particle effects.
-	 * Is only called on the client side.
-	 *
-	 * @param source	The entity we are currently attached to.
-	 */
-	default void render(Entity source) {
-
-	}
 
 	/**
 	 * Called every tick when attached to a gem.
 	 *
-	 * @param source	The entity we are attached to.
+	 * @param source   The entity we are currently attached to.
-	 * @param w			The world
+	 * @param level		Current active spell level
-	 * @param x			Entity position x
-	 * @param y			Entity position y
-	 * @param z			Entity position z
-	 * @param level		Current spell level
 	 */
-	boolean updateAt(ICaster<?> source, World w, double x, double y, double z, int level);
+	boolean update(ICaster<?> source, int level);
+
+    /**
+     * Called every tick when attached to a player. Used to apply particle effects.
+     * Is only called on the client side.
+     *
+     * @param source    The entity we are currently attached to.
+     */
+    default void render(ICaster<?> source) {
+
+    }
 
 	/**
 	 * Called every tick when attached to an entity to produce particle effects.
 	 * Is only called on the client side.
 	 *
 	 * @param source	The entity we are attached to.
-	 * @param w			The world
-	 * @param x			Entity position x
-	 * @param y			Entity position y
-	 * @param z			Entity position z
 	 * @param level		Current spell level
 	 */
-	default void renderAt(ICaster<?> source, World w, double x, double y, double z, int level) {
+	default void render(ICaster<?> source, int level) {
 
 	}
 

src/main/java/com/minelittlepony/unicopia/spell/SpellShield.java

@@ -1,5 +1,8 @@
 package com.minelittlepony.unicopia.spell;
 
+import java.util.Random;
+
+import com.minelittlepony.unicopia.Predicates;
 import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.Unicopia;
 import com.minelittlepony.unicopia.client.particle.Particles;
@@ -15,8 +18,8 @@ import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.SoundEvents;
 import net.minecraft.nbt.NBTTagCompound;
 import net.minecraft.util.math.AxisAlignedBB;
+import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Vec3d;
-import net.minecraft.world.World;
 
 public class SpellShield extends AbstractSpell {
 
@@ -26,12 +29,18 @@ public class SpellShield extends AbstractSpell {
 	}
 
 	public SpellShield(int type) {
-		setStrength(type);
+	    setCurrentLevel(type);
 	}
 
-	public void setStrength(int level) {
+    @Override
-		strength = level;
+    public int getCurrentLevel() {
-	}
+        return strength;
+    }
+
+    @Override
+    public void setCurrentLevel(int level) {
+        strength = level;
+    }
 
 	@Override
     public String getName() {
@@ -44,21 +53,28 @@ public class SpellShield extends AbstractSpell {
 	}
 
 	@Override
-	public void render(Entity source) {
+	public void render(ICaster<?> source) {
-		spawnParticles(source.getEntityWorld(), source.posX, source.posY, source.posZ, 4 + (strength * 2));
+		spawnParticles(source, 4 + (strength * 2));
 	}
 
-	public void renderAt(ICaster<?> source, World w, double x, double y, double z, int level) {
+	@Override
-		if (w.rand.nextInt(4 + level * 4) == 0) {
+	public void render(ICaster<?> source, int level) {
-			spawnParticles(w, x, y, z, 4 + (level * 2));
+		if (source.getWorld().rand.nextInt(4 + level * 4) == 0) {
+			spawnParticles(source, 4 + (level * 2));
 		}
 	}
 
-	protected void spawnParticles(World w, double x, double y, double z, int strength) {
+	protected void spawnParticles(ICaster<?> source, int strength) {
 	    IShape sphere = new Sphere(true, strength);
 
+	    Random rand = source.getWorld().rand;
+
+	    int x = source.getOrigin().getX();
+	    int y = source.getOrigin().getY();
+	    int z = source.getOrigin().getZ();
+
 	    for (int i = 0; i < strength * 6; i++) {
-    	    Vec3d pos = sphere.computePoint(w.rand);
+    	    Vec3d pos = sphere.computePoint(rand);
     	    Particles.instance().spawnParticle(Unicopia.MAGIC_PARTICLE, false,
     	            pos.x + x, pos.y + y, pos.z + z,
     	            0, 0, 0);
@@ -66,12 +82,12 @@ public class SpellShield extends AbstractSpell {
 	}
 
 	@Override
-	public boolean update(Entity source) {
+	public boolean update(ICaster<?> source) {
-		applyEntities(null, source, source.getEntityWorld(), source.posX, source.posY, source.posZ, strength);
+	    update(source, strength);
 
-		if (source.getEntityWorld().getWorldTime() % 50 == 0) {
+		if (source.getEntity().getEntityWorld().getWorldTime() % 50 == 0) {
 			double radius = 4 + (strength * 2);
-			if (!IPower.takeFromPlayer((EntityPlayer)source, radius/4)) {
+			if (!IPower.takeFromPlayer((EntityPlayer)source.getOwner(), radius/4)) {
 				setDead();
 			}
 		}
@@ -80,49 +96,52 @@ public class SpellShield extends AbstractSpell {
 	}
 
 	@Override
-	public boolean updateAt(ICaster<?> source, World w, double x, double y, double z, int level) {
+	public boolean update(ICaster<?> source, int level) {
-		return applyEntities(source, source.getOwner(), w, x, y, z, level);
-    }
-
-	private boolean applyEntities(ICaster<?> source, Entity owner, World w, double x, double y, double z, int level) {
 		double radius = 4 + (level * 2);
 
-		AxisAlignedBB bb = new AxisAlignedBB(x - radius, y - radius, z - radius, x + radius, y + radius, z + radius);
+		Entity owner = source.getOwner();
+		BlockPos pos = source.getOrigin();
 
-		for (Entity i : w.getEntitiesWithinAABBExcludingEntity(source == null ? null : source.getEntity(), bb)) {
+		int x = pos.getX(), y = pos.getY(), z = pos.getZ();
-			if ((!i.equals(owner)
-			        || (owner instanceof EntityPlayer
-			                && !PlayerSpeciesList.instance().getPlayer((EntityPlayer)owner).getPlayerSpecies().canCast()))) {
 
-				double dist = i.getDistance(x, y, z);
+		BlockPos begin = pos.add(-radius, -radius, -radius);
-				double dist2 = i.getDistance(x, y - i.getEyeHeight(), z);
+		BlockPos end = pos.add(radius, radius, radius);
 
-				boolean projectile = ProjectileUtil.isProjectile(i);
+		AxisAlignedBB bb = new AxisAlignedBB(begin, end);
 
-				if (dist <= radius || dist2 <= radius) {
+		boolean ownerIsValid = Predicates.MAGI.test(owner);
-					if (projectile) {
-						if (!ProjectileUtil.isProjectileThrownBy(i, owner)) {
-							if (dist < radius/2) {
-								i.playSound(SoundEvents.ENTITY_ZOMBIE_VILLAGER_CURE, 0.1f, 1);
-								i.setDead();
-							} else {
-								ricochet(i, x, y, z);
-							}
-						}
-					} else if (i instanceof EntityLivingBase) {
-						double force = dist;
-						if (i instanceof EntityPlayer) {
-							force = calculateForce((EntityPlayer)i);
-						}
 
-						i.addVelocity(
+		for (Entity i : source.getWorld().getEntitiesInAABBexcluding(source.getEntity(), bb, entity -> !(ownerIsValid && entity.equals(owner)))) {
-						        -(x - i.posX) / force,
+		    double dist = i.getDistance(x, y, z);
-						        -(y - i.posY) / force + (dist < 1 ? dist : 0),
+            double dist2 = i.getDistance(x, y - i.getEyeHeight(), z);
-						        -(z - i.posZ) / force);
+
-					}
+            if (dist > radius && dist2 > radius) {
-				}
+                continue;
-			}
+            }
+
+            if (ProjectileUtil.isProjectile(i)) {
+                if (!ProjectileUtil.isProjectileThrownBy(i, owner)) {
+                    if (dist < radius/2) {
+                        i.playSound(SoundEvents.ENTITY_ZOMBIE_VILLAGER_CURE, 0.1F, 1);
+                        i.setDead();
+                    } else {
+                        ricochet(i, pos);
+                    }
+                }
+            } else if (i instanceof EntityLivingBase) {
+                double force = Math.min(0.25F, dist);
+
+                if (i instanceof EntityPlayer) {
+                    force = calculateForce((EntityPlayer)i);
+                }
+
+                i.addVelocity(
+                        -(x - i.posX) / force,
+                        -(y - i.posY) / force + (dist < 1 ? dist : 0),
+                        -(z - i.posZ) / force);
+            }
 		}
+
 		return true;
 	}
 
@@ -142,11 +161,11 @@ public class SpellShield extends AbstractSpell {
 		return force;
 	}
 
-	private void ricochet(Entity projectile, double x, double y, double z) {
+	private void ricochet(Entity projectile, BlockPos pos) {
 		Vec3d position = new Vec3d(projectile.posX, projectile.posY, projectile.posZ);
 		Vec3d motion = new Vec3d(projectile.motionX, projectile.motionY, projectile.motionZ);
 
-		Vec3d normal = position.subtract(x, y, z).normalize();
+		Vec3d normal = position.subtract(pos.getX(), pos.getY(), pos.getZ()).normalize();
 		Vec3d approach = motion.subtract(normal);
 
 		if (approach.length() >= motion.length()) {
@@ -154,10 +173,12 @@ public class SpellShield extends AbstractSpell {
 		}
 	}
 
+	@Override
 	public void writeToNBT(NBTTagCompound compound) {
 		compound.setInteger("spell_strength", strength);
 	}
 
+	@Override
 	public void readFromNBT(NBTTagCompound compound) {
 		strength = compound.getInteger("spell_strength");
 	}