GlowCow.java

package net.glowstone.entity.passive;

import net.glowstone.entity.GlowAnimal;
import net.glowstone.entity.GlowPlayer;
import net.glowstone.entity.objects.GlowItem;
import net.glowstone.net.message.play.player.InteractEntityMessage;
import org.bukkit.GameMode;
import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.Sound;
import org.bukkit.entity.Cow;
import org.bukkit.entity.EntityType;
import org.bukkit.inventory.ItemStack;

public class GlowCow extends GlowAnimal implements Cow {

    public GlowCow(Location location) {
        super(location, EntityType.COW, 10);
        setSize(0.9F, 1.3F);
    }

    @Override
    public boolean entityInteract(GlowPlayer player, InteractEntityMessage message) {
        super.entityInteract(player, message);
        if (player.getGameMode().equals(GameMode.CREATIVE) || player.getGameMode().equals(GameMode.SPECTATOR))
            return false;

        if (!isAdult()) return false;

        if (!player.getItemInHand().getType().equals(Material.BUCKET)) return false;

        if (player.getItemInHand().getAmount() > 1) {
            player.getItemInHand().setAmount(player.getItemInHand().getAmount() - 1);
        } else {
            player.getInventory().clear(player.getInventory().getHeldItemSlot());
        }

        if (player.getInventory().firstEmpty() == -1) {
            GlowItem item = player.getWorld().dropItem(player.getLocation().clone().add(0, 1, 0), new ItemStack(Material.MILK_BUCKET, 1));
            item.setVelocity(getLocation().add(0, -1, 0).clone().toVector().subtract(player.getLocation().clone().add(0, 1, 0).toVector()).multiply(0.3));
        } else {
            player.getInventory().addItem(new ItemStack(Material.MILK_BUCKET, 1));
        }
        return true;
    }

    @Override
    protected Sound getHurtSound() {
        return Sound.ENTITY_COW_HURT;
    }

    @Override
    protected Sound getDeathSound() {
        return Sound.ENTITY_COW_DEATH;
    }

    @Override
    protected Sound getAmbientSound() {
        return Sound.ENTITY_COW_AMBIENT;
    }
}