CatServer/patches/net/minecraft/entity/passive/EntityCow.java.patch

--- ../src-base/minecraft/net/minecraft/entity/passive/EntityCow.java
+++ ../src-work/minecraft/net/minecraft/entity/passive/EntityCow.java
@@ -1,6 +1,10 @@
 package net.minecraft.entity.passive;
 
 import javax.annotation.Nullable;
+
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+
 import net.minecraft.block.Block;
 import net.minecraft.entity.EntityAgeable;
 import net.minecraft.entity.EntityLiving;
@@ -92,15 +96,24 @@
     {
         if (stack != null && stack.getItem() == Items.BUCKET && !player.capabilities.isCreativeMode && !this.isChild())
         {
+            // CraftBukkit start - Got milk?
+            org.bukkit.Location loc = this.getBukkitEntity().getLocation();
+            org.bukkit.event.player.PlayerBucketFillEvent event = CraftEventFactory.callPlayerBucketFillEvent(player, loc.getBlockX(), loc.getBlockY(), loc.getBlockZ(), null, stack, Items.MILK_BUCKET);
+
+            if (event.isCancelled())
+            {
+                return false;
+            }
+            // CraftBukkit end
             player.playSound(SoundEvents.ENTITY_COW_MILK, 1.0F, 1.0F);
 
             if (--stack.stackSize == 0)
             {
-                player.setHeldItem(hand, new ItemStack(Items.MILK_BUCKET));
+                player.setHeldItem(hand, CraftItemStack.asNMSCopy(event.getItemStack()));
             }
-            else if (!player.inventory.addItemStackToInventory(new ItemStack(Items.MILK_BUCKET)))
+            else if (!player.inventory.addItemStackToInventory(CraftItemStack.asNMSCopy(event.getItemStack())))
             {
-                player.dropItem(new ItemStack(Items.MILK_BUCKET), false);
+                player.dropItem(CraftItemStack.asNMSCopy(event.getItemStack()), false);
             }
 
             return true;