Add missing EntityDropItemEvent calls (#5674)

patches/server/0922-Add-various-missing-EntityDropItemEvent-calls.patch

@@ -0,0 +1,59 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jake Potrebic <jake.m.potrebic@gmail.com>
+Date: Tue, 20 Jul 2021 21:35:47 -0700
+Subject: [PATCH] Add various missing EntityDropItemEvent calls
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
+index 74459ab5ccb94863677f0803f8f737f013cb83a3..19a64b582bc042e426220e080d9c21b3a82cf3f7 100644
+--- a/src/main/java/net/minecraft/world/entity/Entity.java
++++ b/src/main/java/net/minecraft/world/entity/Entity.java
+@@ -2509,6 +2509,14 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
+             stack.setCount(0); // Paper - destroy this item - if this ever leaks due to game bugs, ensure it doesn't dupe
+ 
+             entityitem.setDefaultPickUpDelay();
++            // Paper start
++            return this.spawnAtLocation(entityitem);
++        }
++    }
++    @Nullable
++    public ItemEntity spawnAtLocation(ItemEntity entityitem) {
++        {
++            // Paper end
+             // CraftBukkit start
+             EntityDropItemEvent event = new EntityDropItemEvent(this.getBukkitEntity(), (org.bukkit.entity.Item) entityitem.getBukkitEntity());
+             Bukkit.getPluginManager().callEvent(event);
+diff --git a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
+index 7c53dddb598de85abf1eb8b8ee183a6e8e6f9c74..3f100d847fbce6db5b625e99c4f3694576237372 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
++++ b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
+@@ -593,7 +593,7 @@ public class Dolphin extends WaterAnimal {
+                 float f2 = 0.02F * Dolphin.this.random.nextFloat();
+ 
+                 entityitem.setDeltaMovement((double) (0.3F * -Mth.sin(Dolphin.this.getYRot() * 0.017453292F) * Mth.cos(Dolphin.this.getXRot() * 0.017453292F) + Mth.cos(f1) * f2), (double) (0.3F * Mth.sin(Dolphin.this.getXRot() * 0.017453292F) * 1.5F), (double) (0.3F * Mth.cos(Dolphin.this.getYRot() * 0.017453292F) * Mth.cos(Dolphin.this.getXRot() * 0.017453292F) + Mth.sin(f1) * f2));
+-                Dolphin.this.level.addFreshEntity(entityitem);
++                Dolphin.this.spawnAtLocation(entityitem); // Paper - call EntityDropItemEvent
+             }
+         }
+     }
+diff --git a/src/main/java/net/minecraft/world/entity/animal/Fox.java b/src/main/java/net/minecraft/world/entity/animal/Fox.java
+index 8f294f10aca2df007830b12da0506f7614206a89..6a66b5d1a3d8615dcc15057f03476e9ccbf4b4f2 100644
+--- a/src/main/java/net/minecraft/world/entity/animal/Fox.java
++++ b/src/main/java/net/minecraft/world/entity/animal/Fox.java
+@@ -497,14 +497,14 @@ public class Fox extends Animal {
+             entityitem.setPickUpDelay(40);
+             entityitem.setThrower(this.getUUID());
+             this.playSound(SoundEvents.FOX_SPIT, 1.0F, 1.0F);
+-            this.level.addFreshEntity(entityitem);
++            this.spawnAtLocation(entityitem); // Paper - call EntityDropItemEvent
+         }
+     }
+ 
+     private void dropItemStack(ItemStack stack) {
+         ItemEntity entityitem = new ItemEntity(this.level, this.getX(), this.getY(), this.getZ(), stack);
+ 
+-        this.level.addFreshEntity(entityitem);
++        this.spawnAtLocation(entityitem); // Paper - call EntityDropItemEvent
+     }
+ 
+     @Override