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. 

1 files changed, 24 insertions, 0 deletions

diff --git a/patches/server/0894-Make-Amethyst-throw-both-Spread-and-Grow-Events.patch b/patches/server/0894-Make-Amethyst-throw-both-Spread-and-Grow-Events.patch
new file mode 100644
index 0000000000..96b4aa8c41
--- /dev/null
+++ b/patches/server/0894-Make-Amethyst-throw-both-Spread-and-Grow-Events.patch
@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Jacob Litewski <[email protected]>
+Date: Tue, 13 Jun 2023 19:16:39 -0400
+Subject: [PATCH] Make Amethyst throw both Spread and Grow Events
+
+
+diff --git a/src/main/java/net/minecraft/world/level/block/BuddingAmethystBlock.java b/src/main/java/net/minecraft/world/level/block/BuddingAmethystBlock.java
+index 79f1fb45447350b5bedee8ce3efe6c150aa9772c..7f58c9f5935cd14ea1096de14633f653eb486d7e 100644
+--- a/src/main/java/net/minecraft/world/level/block/BuddingAmethystBlock.java
++++ b/src/main/java/net/minecraft/world/level/block/BuddingAmethystBlock.java
+@@ -45,7 +45,13 @@ public class BuddingAmethystBlock extends AmethystBlock {
+             if (block != null) {
+                 BlockState iblockdata2 = (BlockState) ((BlockState) block.defaultBlockState().setValue(AmethystClusterBlock.FACING, enumdirection)).setValue(AmethystClusterBlock.WATERLOGGED, iblockdata1.getFluidState().getType() == Fluids.WATER);
+ 
++                // Paper start - Have Amethyst throw both spread and grow events
++                if (block == Blocks.SMALL_AMETHYST_BUD) {
+                 org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockSpreadEvent(world, pos, blockposition1, iblockdata2); // CraftBukkit
++                } else {
++                    org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockGrowEvent(world, blockposition1, iblockdata2);
++                }
++                // Paper end - Have Amethyst throw both spread and grow events
+             }
+ 
+         }