Implement Bucket events

src/main/java/net/minecraft/server/EntityCow.java

@@ -0,0 +1,72 @@
+package net.minecraft.server;
+
+// CraftBukkit start
+import org.bukkit.Location;
+import org.bukkit.craftbukkit.CraftServer;
+import org.bukkit.craftbukkit.event.CraftEventFactory;
+import org.bukkit.craftbukkit.inventory.CraftItemStack;
+import org.bukkit.entity.Player;
+import org.bukkit.event.player.PlayerBucketFillEvent;
+// CraftBukkit end
+
+public class EntityCow extends EntityAnimal {
+
+    public EntityCow(World world) {
+        super(world);
+        this.texture = "/mob/cow.png";
+        this.a(0.9F, 1.3F);
+    }
+
+    public void a(NBTTagCompound nbttagcompound) {
+        super.a(nbttagcompound);
+    }
+
+    public void b(NBTTagCompound nbttagcompound) {
+        super.b(nbttagcompound);
+    }
+
+    protected String e() {
+        return "mob.cow";
+    }
+
+    protected String f() {
+        return "mob.cowhurt";
+    }
+
+    protected String g() {
+        return "mob.cowhurt";
+    }
+
+    protected float i() {
+        return 0.4F;
+    }
+
+    protected int h() {
+        return Item.LEATHER.id;
+    }
+
+    public boolean a(EntityHuman entityhuman) {
+        ItemStack itemstack = entityhuman.inventory.b();
+
+        if (itemstack != null && itemstack.id == Item.BUCKET.id) {
+            // CraftBukkit start - got milk?
+            Location loc = this.getBukkitEntity().getLocation();
+            PlayerBucketFillEvent event = CraftEventFactory.callPlayerBucketFillEvent(entityhuman, loc.getBlockX(), loc.getBlockY(), loc.getBlockZ(), -1, itemstack, Item.MILK_BUCKET);
+
+            if (event.isCancelled()) {
+                return false;
+            }
+
+            CraftItemStack itemInHand = (CraftItemStack) event.getItemStack();
+            byte data = itemInHand.getData() == null ? (byte) 0 : itemInHand.getData().getData();
+            itemstack = new ItemStack(itemInHand.getTypeId(), itemInHand.getAmount(), data );
+
+            entityhuman.inventory.a(entityhuman.inventory.c, itemstack);
+            // CraftBukkit end
+
+            return true;
+        } else {
+            return false;
+        }
+    }
+}