From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: William Blake Galbreath <Blake.Galbreath@GMail.com>
Date: Thu, 27 May 2021 04:04:23 -0500
Subject: [PATCH] ShulkerBox allow oversized stacks

This fixes PaperMC/Paper#4748 where breaking a shulkerbox in survival mode
with oversized itemstacks would cause a "chunk ban". This fixes it by always
creating an itemstack using the TileEntity's NBT data (how it handles it for
creative players) instead of routing it through the LootableBuilder.

diff --git a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
index 72fa3a9058bac4769c0b7b27fa988cc9b06f3e75..027bac5687a60ab43ef527a125c5fa27798a4943 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -429,7 +429,7 @@ public class ServerPlayerGameMode {
 
                 ItemStack mainHandStack = null; // Paper
                 boolean isCorrectTool = false; // Paper
-                if (this.isCreative()) {
+                if (this.isCreative() || (this.level.purpurConfig.shulkerBoxAllowOversizedStacks && block instanceof net.minecraft.world.level.block.ShulkerBoxBlock)) { // Purpur
                     // return true; // CraftBukkit
                 } else {
                     ItemStack itemstack = this.player.getMainHandItem();
diff --git a/src/main/java/net/minecraft/world/level/block/ShulkerBoxBlock.java b/src/main/java/net/minecraft/world/level/block/ShulkerBoxBlock.java
index b51155ad12515b2d0dd0f202580b9f455c114d9a..dd6c82a418ee299d7a5614cb0260949c198b4149 100644
--- a/src/main/java/net/minecraft/world/level/block/ShulkerBoxBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/ShulkerBoxBlock.java
@@ -137,7 +137,7 @@ public class ShulkerBoxBlock extends BaseEntityBlock {
     public void playerWillDestroy(Level world, BlockPos pos, BlockState state, Player player) {
         BlockEntity blockEntity = world.getBlockEntity(pos);
         if (blockEntity instanceof ShulkerBoxBlockEntity shulkerBoxBlockEntity) {
-            if (!world.isClientSide && player.isCreative() && !shulkerBoxBlockEntity.isEmpty()) {
+            if (world.purpurConfig.shulkerBoxAllowOversizedStacks || (!world.isClientSide && player.isCreative() && !shulkerBoxBlockEntity.isEmpty())) { // Purpur
                 ItemStack itemStack = getColoredItemStack(this.getColor());
                 blockEntity.saveToItem(itemStack);
                 if (shulkerBoxBlockEntity.hasCustomName()) {
diff --git a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
index 43958fce6a087231c8db3f959cb852e99c113ac6..609cd9300a8c9432638ed099ea987c6656674402 100644
--- a/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
+++ b/src/main/java/org/purpurmc/purpur/PurpurWorldConfig.java
@@ -663,6 +663,11 @@ public class PurpurWorldConfig {
         }
     }
 
+    public boolean shulkerBoxAllowOversizedStacks = false;
+    private void shulkerBoxSettings() {
+        shulkerBoxAllowOversizedStacks = getBoolean("blocks.shulker_box.allow-oversized-stacks", shulkerBoxAllowOversizedStacks);
+    }
+
     public boolean slabHalfBreak = false;
     private void slabSettings() {
         slabHalfBreak = getBoolean("blocks.slab.break-individual-slabs-when-sneaking", slabHalfBreak);