PaperMC/patches/server/0854-Fix-SpawnEggMeta-get-setSpawnedType.patch
Owen 89d51d5f29
Allow enabling sand duping (#10191)
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable.

It should be noted that this decision does not promise all future exploits will be configurable.
2024-03-03 17:05:34 -05:00

41 lines
1.7 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Thu, 23 Feb 2023 13:19:13 -0800
Subject: [PATCH] Fix SpawnEggMeta#get/setSpawnedType
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java
index 50a5321a59895739d3d42f2d06ac9d1b43480cfa..7ff690f386b7fb9e090c86a28f649119505af7b9 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaSpawnEgg.java
@@ -219,6 +219,30 @@ public class CraftMetaSpawnEgg extends CraftMetaItem implements SpawnEggMeta {
public void setSpawnedType(EntityType type) {
throw new UnsupportedOperationException("Must change item type to set spawned type");
}
+ // Paper start
+ @Override
+ public EntityType getCustomSpawnedType() {
+ return java.util.Optional.ofNullable(this.entityTag)
+ .map(tag -> tag.getString(ENTITY_ID.NBT))
+ .flatMap(net.minecraft.world.entity.EntityType::byString)
+ .map(org.bukkit.craftbukkit.util.CraftMagicNumbers::getEntityType)
+ .orElse(null);
+ }
+
+ @Override
+ public void setCustomSpawnedType(final EntityType type) {
+ if (type == null) {
+ if (this.entityTag != null) {
+ this.entityTag.remove(ENTITY_ID.NBT);
+ }
+ } else {
+ if (this.entityTag == null) {
+ this.entityTag = new CompoundTag();
+ }
+ this.entityTag.putString(ENTITY_ID.NBT, type.key().toString());
+ }
+ }
+ // Paper end
@Override
public EntitySnapshot getSpawnedEntity() {