Remove KeyedObject interface (#7680)

patches/server/0620-Fix-PlayerItemConsumeEvent-cancelling-properly.patch

@@ -0,0 +1,22 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: chickeneer <emcchickeneer@gmail.com>
+Date: Fri, 19 Mar 2021 00:33:15 -0500
+Subject: [PATCH] Fix PlayerItemConsumeEvent cancelling properly
+
+When the active item is not cleared, the item is still readied
+for use and will repeatedly trigger the PlayerItemConsumeEvent
+till their item is switched.
+This patch clears the active item when the event is cancelled
+
+diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+index 9a85187a111116f6dabf9b40867a4f3cdcf64c6a..fd2d5e274a3bf889b954bed17d286d1157cd208e 100644
+--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
++++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
+@@ -3719,6 +3719,7 @@ public abstract class LivingEntity extends Entity {
+                         level.getCraftServer().getPluginManager().callEvent(event);
+ 
+                         if (event.isCancelled()) {
++                        this.stopUsingItem(); // Paper - event is using an item, clear active item to reset its use
+                             // Update client
+                             ((ServerPlayer) this).getBukkitEntity().updateInventory();
+                             ((ServerPlayer) this).getBukkitEntity().updateScaledHealth();