001/*
002 * Trident - A Multithreaded Server Alternative
003 * Copyright 2014 The TridentSDK Team
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *    http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package net.tridentsdk.server.entity.projectile;
019
020import net.tridentsdk.base.Position;
021import net.tridentsdk.entity.Projectile;
022import net.tridentsdk.entity.living.ProjectileLauncher;
023import net.tridentsdk.entity.traits.EntityProperties;
024import net.tridentsdk.server.entity.TridentEntity;
025
026import java.lang.ref.WeakReference;
027import java.util.UUID;
028
029/**
030 * Represents an entity that is thrown or launched
031 *
032 * @author The TridentSDK Team
033 */
034public abstract class TridentProjectile extends TridentEntity implements Projectile {
035    /**
036     * The source that fires the projectile
037     */
038    protected volatile WeakReference<ProjectileLauncher> source;
039
040    /**
041     * Inherits UUID and spawnPosition from {@link TridentEntity}
042     *
043     * @param source the entity which fired the projectile
044     */
045    public TridentProjectile(UUID uniqueId, Position spawnLocation, ProjectileLauncher source) {
046        super(uniqueId, spawnLocation);
047        this.source = new WeakReference<>(source);
048    }
049
050    @Override
051    public boolean isNameVisible() {
052        return false;
053    }
054
055    @Override
056    public abstract void applyProperties(EntityProperties properties);
057
058    @Override
059    protected void doTick() {
060        // TODO
061    }
062
063    @Override
064    public void doHit() {
065        this.hit();
066    }
067
068    /**
069     * Performed when the projectile hits something
070     */
071    protected abstract void hit();
072
073    @Override
074    public ProjectileLauncher launcher() {
075        return this.source.get();
076    }
077
078    @Override
079    public void setLauncher(final ProjectileLauncher shooter) {
080        TridentProjectile.this.source = new WeakReference<>(shooter);
081    }
082}