Paper/nms-patches/BlockPlant.patch

--- ../work/decompile-8eb82bde/net/minecraft/server/BlockPlant.java	2015-01-31 10:09:14.372634430 +1100
+++ src/main/java/net/minecraft/server/BlockPlant.java	2015-01-31 10:09:14.372634430 +1100
@@ -1,6 +1,8 @@
 package net.minecraft.server;
 
 import java.util.Random;
+import org.bukkit.craftbukkit.util.CraftMagicNumbers;
+import org.bukkit.event.block.BlockPhysicsEvent;
 
 public class BlockPlant extends Block {
 
@@ -36,6 +38,15 @@
 
     protected void e(World world, BlockPosition blockposition, IBlockData iblockdata) {
         if (!this.f(world, blockposition, iblockdata)) {
+            // CraftBukkit Start
+            org.bukkit.block.Block block = world.getWorld().getBlockAt(blockposition.getX(), blockposition.getY(), blockposition.getZ());
+            BlockPhysicsEvent event = new BlockPhysicsEvent(block, block.getTypeId());
+            world.getServer().getPluginManager().callEvent(event);
+
+            if (event.isCancelled()) {
+                return;
+            }
+            // CraftBukkit end
             this.b(world, blockposition, iblockdata, 0);
             world.setTypeAndData(blockposition, Blocks.AIR.getBlockData(), 3);
         }