PaperMC/patches/server/0464-Extend-block-drop-capture-to-capture-all-items-added.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Thu, 17 Sep 2020 00:36:05 +0100
Subject: [PATCH] Extend block drop capture to capture all items added to the
 world


diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
index e6694cb87031cb273ba53ac991d4c79b1f5c1ced..fe376f3224ed4083d0bfc20911fc059d7b32e2c9 100644
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
@@ -1509,6 +1509,12 @@ public class ServerLevel extends Level implements WorldGenLevel {
             // WorldServer.LOGGER.warn("Tried to add entity {} but it was marked as removed already", EntityTypes.getKey(entity.getType())); // CraftBukkit
             return false;
         } else {
+            // Paper start - capture all item additions to the world
+            if (captureDrops != null && entity instanceof net.minecraft.world.entity.item.ItemEntity) {
+                captureDrops.add((net.minecraft.world.entity.item.ItemEntity) entity);
+                return true;
+            }
+            // Paper end
             // SPIGOT-6415: Don't call spawn event when reason is null. For example when an entity teleports to a new world.
             if (spawnReason != null && !CraftEventFactory.doEntityAddEventCalling(this, entity, spawnReason)) {
                 return false;
diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 345bae8d145abd8357f4b71f4977e5850b980ff4..40ac674da09a5d28c3b691d8979b228b9c6a8a84 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -436,10 +436,12 @@ public class ServerPlayerGameMode {
                     // return true; // CraftBukkit
                 }
                 // CraftBukkit start
+                java.util.List<net.minecraft.world.entity.item.ItemEntity> itemsToDrop = this.level.captureDrops; // Paper - store current list
+                this.level.captureDrops = null; // Paper - Remove this earlier so that we can actually drop stuff
                 if (event.isDropItems()) {
-                    org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockDropItemEvent(bblock, state, this.player, this.level.captureDrops);
+                    org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockDropItemEvent(bblock, state, this.player, itemsToDrop); // Paper - use stored ref
                 }
-                this.level.captureDrops = null;
+                //this.level.captureDrops = null; // Paper - move up
 
                 // Drop event experience
                 if (flag && event != null) {