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path: root/patches/server/0149-Shoulder-Entities-Release-API.patch
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sat, 17 Jun 2017 15:18:30 -0400
Subject: [PATCH] Shoulder Entities Release API


diff --git a/src/main/java/net/minecraft/world/entity/player/Player.java b/src/main/java/net/minecraft/world/entity/player/Player.java
index 07a8abb714a9dfd470ab0486c336e3b58ea927a1..d4e3649f4d66545842a7f8cd3dabad39d185046e 100644
--- a/src/main/java/net/minecraft/world/entity/player/Player.java
+++ b/src/main/java/net/minecraft/world/entity/player/Player.java
@@ -2036,20 +2036,44 @@ public abstract class Player extends LivingEntity {
 
     }
 
+    // Paper start
+    public Entity releaseLeftShoulderEntity() {
+        Entity entity = this.spawnEntityFromShoulder0(this.getShoulderEntityLeft());
+        if (entity != null) {
+            this.setShoulderEntityLeft(new CompoundTag());
+        }
+        return entity;
+    }
+
+    public Entity releaseRightShoulderEntity() {
+        Entity entity = this.spawnEntityFromShoulder0(this.getShoulderEntityRight());
+        if (entity != null) {
+            this.setShoulderEntityRight(new CompoundTag());
+        }
+        return entity;
+    }
+    // Paper - maintain old signature
     private boolean spawnEntityFromShoulder(CompoundTag nbttagcompound) { // CraftBukkit void->boolean
-        if (!this.level.isClientSide && !nbttagcompound.isEmpty()) {
+        return spawnEntityFromShoulder0(nbttagcompound) != null;
+    }
+
+    // Paper - return entity
+    private Entity spawnEntityFromShoulder0(@Nullable CompoundTag nbttagcompound) {
+        if (!this.level.isClientSide && nbttagcompound != null && !nbttagcompound.isEmpty()) {
             return EntityType.create(nbttagcompound, this.level).map((entity) -> { // CraftBukkit
                 if (entity instanceof TamableAnimal) {
                     ((TamableAnimal) entity).setOwnerUUID(this.uuid);
                 }
 
                 entity.setPos(this.getX(), this.getY() + 0.699999988079071D, this.getZ());
-                return ((ServerLevel) this.level).addWithUUID(entity, CreatureSpawnEvent.SpawnReason.SHOULDER_ENTITY); // CraftBukkit
-            }).orElse(true); // CraftBukkit
+                boolean addedToWorld = ((ServerLevel) this.level).addWithUUID(entity, CreatureSpawnEvent.SpawnReason.SHOULDER_ENTITY); // CraftBukkit
+                return addedToWorld ? entity : null;
+            }).orElse(null); // CraftBukkit // Paper - true -> null
         }
 
-        return true; // CraftBukkit
+        return null; // Paper - return null
     }
+    // Paper end
 
     @Override
     public abstract boolean isSpectator();
diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
index 19549dda26c24388bd13a5a2579789e2d1e3ad88..3ca0d08a9e6511b8a96abcf0807a77d52f303a44 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftHumanEntity.java
@@ -507,6 +507,32 @@ public class CraftHumanEntity extends CraftLivingEntity implements HumanEntity {
         this.getHandle().getCooldowns().addCooldown(CraftMagicNumbers.getItem(material), ticks);
     }
 
+    // Paper start
+    @Override
+    public org.bukkit.entity.Entity releaseLeftShoulderEntity() {
+        if (!getHandle().getShoulderEntityLeft().isEmpty()) {
+            Entity entity = getHandle().releaseLeftShoulderEntity();
+            if (entity != null) {
+                return entity.getBukkitEntity();
+            }
+        }
+
+        return null;
+    }
+
+    @Override
+    public org.bukkit.entity.Entity releaseRightShoulderEntity() {
+        if (!getHandle().getShoulderEntityRight().isEmpty()) {
+            Entity entity = getHandle().releaseRightShoulderEntity();
+            if (entity != null) {
+                return entity.getBukkitEntity();
+            }
+        }
+
+        return null;
+    }
+    // Paper end
+
     @Override
     public boolean discoverRecipe(NamespacedKey recipe) {
         return this.discoverRecipes(Arrays.asList(recipe)) != 0;