Paper/patches/server/0591-Add-EntityDamageItemEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Tue, 22 Dec 2020 13:52:48 -0800
Subject: [PATCH] Add EntityDamageItemEvent


diff --git a/src/main/java/net/minecraft/world/item/ItemStack.java b/src/main/java/net/minecraft/world/item/ItemStack.java
index b4cb9ff5553995dddfb99b6b3ac1250b92a65d9d..2947a43a1d9e49273ed0242691273e50c657cd05 100644
--- a/src/main/java/net/minecraft/world/item/ItemStack.java
+++ b/src/main/java/net/minecraft/world/item/ItemStack.java
@@ -647,7 +647,7 @@ public final class ItemStack implements DataComponentHolder {
         return (Integer) this.getOrDefault(DataComponents.MAX_DAMAGE, 0);
     }
 
-    public void hurtAndBreak(int amount, RandomSource random, @Nullable ServerPlayer player, Runnable breakCallback) {
+    public void hurtAndBreak(int amount, RandomSource random, @Nullable LivingEntity player, Runnable breakCallback) { // Paper - Add EntityDamageItemEvent
         if (this.isDamageableItem()) {
             int j;
 
@@ -663,8 +663,8 @@ public final class ItemStack implements DataComponentHolder {
 
                 amount -= k;
                 // CraftBukkit start
-                if (player != null) {
-                    PlayerItemDamageEvent event = new PlayerItemDamageEvent(player.getBukkitEntity(), CraftItemStack.asCraftMirror(this), amount);
+                if (player instanceof ServerPlayer serverPlayer) { // Paper - Add EntityDamageItemEvent
+                    PlayerItemDamageEvent event = new PlayerItemDamageEvent(serverPlayer.getBukkitEntity(), CraftItemStack.asCraftMirror(this), amount); // Paper - Add EntityDamageItemEvent
                     event.getPlayer().getServer().getPluginManager().callEvent(event);
 
                     if (amount != event.getDamage() || event.isCancelled()) {
@@ -675,6 +675,14 @@ public final class ItemStack implements DataComponentHolder {
                     }
 
                     amount = event.getDamage();
+                    // Paper start - Add EntityDamageItemEvent
+                } else if (player != null) {
+                    io.papermc.paper.event.entity.EntityDamageItemEvent event = new io.papermc.paper.event.entity.EntityDamageItemEvent(player.getBukkitLivingEntity(), CraftItemStack.asCraftMirror(this), amount);
+                    if (!event.callEvent()) {
+                        return;
+                    }
+                    amount = event.getDamage();
+                    // Paper end - Add EntityDamageItemEvent
                 }
                 // CraftBukkit end
                 if (amount <= 0) {
@@ -682,8 +690,8 @@ public final class ItemStack implements DataComponentHolder {
                 }
             }
 
-            if (player != null && amount != 0) {
-                CriteriaTriggers.ITEM_DURABILITY_CHANGED.trigger(player, this, this.getDamageValue() + amount);
+            if (player instanceof ServerPlayer serverPlayer && amount != 0) { // Paper - Add EntityDamageItemEvent
+                CriteriaTriggers.ITEM_DURABILITY_CHANGED.trigger(serverPlayer, this, this.getDamageValue() + amount); // Paper - Add EntityDamageItemEvent
             }
 
             j = this.getDamageValue() + amount;
@@ -716,7 +724,7 @@ public final class ItemStack implements DataComponentHolder {
                 entityplayer = null;
             }
 
-            this.hurtAndBreak(amount, randomsource, entityplayer, () -> {
+            this.hurtAndBreak(amount, randomsource, entity, () -> { // Paper - Add EntityDamageItemEvent
                 entity.broadcastBreakEvent(slot);
                 Item item = this.getItem();
                 // CraftBukkit start - Check for item breaking