Fixed cloud block placement desync when on multiplayer

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

@@ -86,4 +86,8 @@ public class InteractionManager {
     public PlayerEntity createPlayer(World world, GameProfile profile) {
         return new DummyPlayerEntity(world, profile);
     }
+
+    public void sendPlayerLookAngles(PlayerEntity player) {
+
+    }
 }

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

@@ -209,6 +209,7 @@ public class AbilityDispatcher implements Tickable, NbtSerialisable {
                 warmup = 0;
 
                 if (data.isPresent()) {
+                    InteractionManager.instance().sendPlayerLookAngles(player.asEntity());
                     Channel.CLIENT_PLAYER_ABILITY.sendToServer(new MsgPlayerAbility<>(ability, data, ActivationType.NONE));
                 } else {
                     player.asEntity().playSound(USounds.GUI_ABILITY_FAIL, 1, 1);

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

@@ -26,6 +26,7 @@ import com.mojang.authlib.GameProfile;
 import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
 import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
 import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.network.ClientPlayerEntity;
 import net.minecraft.client.sound.AggressiveBeeSoundInstance;
 import net.minecraft.client.sound.MovingMinecartSoundInstance;
 import net.minecraft.client.sound.PassiveBeeSoundInstance;
@@ -37,6 +38,7 @@ import net.minecraft.entity.passive.BeeEntity;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.entity.vehicle.AbstractMinecartEntity;
 import net.minecraft.network.PacketByteBuf;
+import net.minecraft.network.packet.c2s.play.PlayerMoveC2SPacket;
 import net.minecraft.sound.SoundCategory;
 import net.minecraft.util.Identifier;
 import net.minecraft.util.math.random.Random;
@@ -152,4 +154,11 @@ public class ClientInteractionManager extends InteractionManager {
     public ParticleSpawner createBoundParticle(UUID id) {
         return new ClientBoundParticleSpawner(id);
     }
+
+    @Override
+    public void sendPlayerLookAngles(PlayerEntity player) {
+        if (player instanceof ClientPlayerEntity c) {
+            c.networkHandler.sendPacket(new PlayerMoveC2SPacket.LookAndOnGround(player.getYaw(), player.getPitch(), player.isOnGround()));
+        }
+    }
 }

src/main/java/com/minelittlepony/unicopia/item/cloud/CloudBlockItem.java

@@ -1,5 +1,7 @@
 package com.minelittlepony.unicopia.item.cloud;
 
+import com.minelittlepony.unicopia.InteractionManager;
+
 import net.minecraft.block.Block;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.player.PlayerEntity;
@@ -30,7 +32,7 @@ extends BlockItem {
 
     @Override
     public TypedActionResult<ItemStack> use(World world, PlayerEntity user, Hand hand) {
-
+        InteractionManager.instance().sendPlayerLookAngles(user);
         Vec3d targetPos = user.getEyePos().add(user.getRotationVec(1).multiply(1, 1.5, 1).normalize().multiply(2));
         ItemPlacementContext context = new ItemPlacementContext(user, hand, user.getStackInHand(hand), new BlockHitResult(
             targetPos,

src/main/resources/data/unicopia/tags/items/falls_slowly.json

@@ -2,6 +2,7 @@
   "replace": false,
   "values": [
     "minecraft:feather",
-    "#unicopia:magic_feathers"
+    "#unicopia:magic_feathers",
+    "unicopia:cloud_lump"
   ]
 }