Paper/patches/server/0581-Allow-disabling-mob-spawner-spawn-egg-transformation.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: BrodyBeckwith <brody@beckwith.dev>
Date: Fri, 9 Oct 2020 20:30:12 -0400
Subject: [PATCH] Allow disabling mob spawner spawn egg transformation


diff --git a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
index 561976466cae6e4df63433c4631c516c32a80bca..0079b4423c022a68aa9bee5b81910714ef3d1cd8 100644
--- a/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
+++ b/src/main/java/com/destroystokyo/paper/PaperWorldConfig.java
@@ -84,6 +84,11 @@ public class PaperWorldConfig {
         fixCuringZombieVillagerDiscountExploit = getBoolean("game-mechanics.fix-curing-zombie-villager-discount-exploit", fixCuringZombieVillagerDiscountExploit);
     }
 
+    public boolean disableMobSpawnerSpawnEggTransformation = false;
+    private void disableMobSpawnerSpawnEggTransformation() {
+        disableMobSpawnerSpawnEggTransformation = getBoolean("game-mechanics.disable-mob-spawner-spawn-egg-transformation", disableMobSpawnerSpawnEggTransformation);
+    }
+
     public short keepLoadedRange;
     private void keepLoadedRange() {
         keepLoadedRange = (short) (getInt("keep-spawn-loaded-range", Math.min(spigotConfig.viewDistance, 10)) * 16);
diff --git a/src/main/java/net/minecraft/world/item/SpawnEggItem.java b/src/main/java/net/minecraft/world/item/SpawnEggItem.java
index dd69c9b132fb52c60c44b3e029924412ecc28133..32a9a752e1afdcdaffa5198f3577856f742c9136 100644
--- a/src/main/java/net/minecraft/world/item/SpawnEggItem.java
+++ b/src/main/java/net/minecraft/world/item/SpawnEggItem.java
@@ -61,7 +61,7 @@ public class SpawnEggItem extends Item {
             Direction enumdirection = context.getClickedFace();
             BlockState iblockdata = world.getBlockState(blockposition);
 
-            if (iblockdata.is(Blocks.SPAWNER)) {
+            if (!world.paperConfig.disableMobSpawnerSpawnEggTransformation && iblockdata.is(Blocks.SPAWNER)) { // Paper
                 BlockEntity tileentity = world.getBlockEntity(blockposition);
 
                 if (tileentity instanceof SpawnerBlockEntity) {