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 e9b2b0c8f5c61787af3ee3c402e5d65656868422..dd5bc68171ce5a67ecf30de65f0c1d280cc88419 100644
--- a/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
+++ b/src/main/java/net/minecraft/server/level/ServerPlayerGameMode.java
@@ -449,7 +449,7 @@ public class ServerPlayerGameMode {
                     block.destroy(this.level, pos, iblockdata);
                 }
 
-                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 b9c558060024d380e89116489c7fc12ad88db8ad..0a0a4be15bed899812fcd4af0e311f5fc40d5570 100644
--- a/src/main/java/net/minecraft/world/level/block/ShulkerBoxBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/ShulkerBoxBlock.java
@@ -122,7 +122,7 @@ public class ShulkerBoxBlock extends BaseEntityBlock {
         BlockEntity blockEntity = world.getBlockEntity(pos);
         if (blockEntity instanceof ShulkerBoxBlockEntity) {
             ShulkerBoxBlockEntity shulkerBoxBlockEntity = (ShulkerBoxBlockEntity)blockEntity;
-            if (!world.isClientSide && player.isCreative() && !shulkerBoxBlockEntity.isEmpty()) {
+            if (world.purpurConfig.shulkerBoxAllowOversizedStacks || (player.isCreative() && !shulkerBoxBlockEntity.isEmpty())) { // Purpur
                 ItemStack itemStack = getColoredItemStack(this.getColor());
                 CompoundTag compoundTag = shulkerBoxBlockEntity.saveToTag(new CompoundTag());
                 if (!compoundTag.isEmpty()) {
diff --git a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
index d1e59b94c9ade6625d3f60b02ba323b096934198..144933e33452efb68c22535ceea36ccdabc97ed3 100644
--- a/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
+++ b/src/main/java/net/pl3x/purpur/PurpurWorldConfig.java
@@ -676,6 +676,11 @@ public class PurpurWorldConfig {
         }
     }
 
+    public boolean shulkerBoxAllowOversizedStacks = false;
+    private void shulkerBoxSettings() {
+        shulkerBoxAllowOversizedStacks = getBoolean("blocks.shulker_box.allow-oversized-stacks", shulkerBoxAllowOversizedStacks);
+    }
+
     public boolean signAllowColors = false;
     public boolean signRightClickEdit = false;
     private void signSettings() {