Paper/patches/server/0816-Add-various-missing-EntityDropItemEvent-calls.patch

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 edea89eebb9a99e41dc2bcbabc94b6775f5470df..b0a7c41372609de260298d40490781bb63b0fa1d 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -2699,6 +2699,14 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
             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 fb5e200499a1a73fd40c8b7c81185f48381f49e4..e555fd8ca61e1ce7a52ecd475cc3ea11dedcab08 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Dolphin.java
@@ -592,7 +592,7 @@ 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 6124209f50300eeaab45b66c2f1a5b2944119450..96799179b0dd1886f0cdc386f04e152a19b3337d 100644
--- a/src/main/java/net/minecraft/world/entity/animal/Fox.java
+++ b/src/main/java/net/minecraft/world/entity/animal/Fox.java
@@ -509,14 +509,14 @@ public class Fox extends Animal implements VariantHolder<Fox.Type> {
             entityitem.setPickUpDelay(40);
             entityitem.setThrower(this);
             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
diff --git a/src/main/java/net/minecraft/world/entity/animal/goat/Goat.java b/src/main/java/net/minecraft/world/entity/animal/goat/Goat.java
index 3ec2f590dfe9410f1a9d2afb530eebfcce917798..363892e0c26bab89d2abaa44d8736e2fd84d292f 100644
--- a/src/main/java/net/minecraft/world/entity/animal/goat/Goat.java
+++ b/src/main/java/net/minecraft/world/entity/animal/goat/Goat.java
@@ -357,8 +357,7 @@ public class Goat extends Animal {
             double d2 = (double) Mth.randomBetween(this.random, -0.2F, 0.2F);
             ItemEntity entityitem = new ItemEntity(this.level(), vec3d.x(), vec3d.y(), vec3d.z(), itemstack, d0, d1, d2);
 
-            this.level().addFreshEntity(entityitem);
-            return true;
+            return this.spawnAtLocation(entityitem) != null; // Paper - call EntityDropItemEvent by calling spawnAtLocation.
         }
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/animal/sniffer/Sniffer.java b/src/main/java/net/minecraft/world/entity/animal/sniffer/Sniffer.java
index 1d9913cbc7fd0c6e29278b02c38703b52af1245b..36b3945832733b5ad66d25aa3a31335234d2acff 100644
--- a/src/main/java/net/minecraft/world/entity/animal/sniffer/Sniffer.java
+++ b/src/main/java/net/minecraft/world/entity/animal/sniffer/Sniffer.java
@@ -352,8 +352,9 @@ public class Sniffer extends Animal {
 
         entityitem.setDefaultPickUpDelay();
         this.finalizeSpawnChildFromBreeding(world, other, (AgeableMob) null);
+        if (this.spawnAtLocation(entityitem) != null) { // Paper - call EntityDropItemEvent
         this.playSound(SoundEvents.SNIFFER_EGG_PLOP, 1.0F, (this.random.nextFloat() - this.random.nextFloat()) * 0.2F + 0.5F);
-        world.addFreshEntity(entityitem);
+        } // Paper
     }
 
     @Override