package org.loon.framework.android.game.action;



import org.loon.framework.android.game.core.graphics.window.actor.ActorLayer;



/**

 * Copyright 2008 - 2011

 * 

 * Licensed under the Apache License, Version 2.0 (the "License"); you may not

 * use this file except in compliance with the License. You may obtain a copy of

 * the License at

 * 

 * http://www.apache.org/licenses/LICENSE-2.0

 * 

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT

 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the

 * License for the specific language governing permissions and limitations under

 * the License.

 * 

 * @project loonframework

 * @author chenpeng

 * @email??šceponline@yahoo.com.cn

 * @version 0.1

 */

public class FireTo extends ActionEvent {



	private double direction;



	private int x, y;



	private int vx, vy;



	private int endX, endY;



	private double speed;



	public FireTo(int endX, int endY, double speed) {

		this.endX = endX;

		this.endY = endY;

		this.speed = speed;

	}



	public boolean isComplete() {

		return isComplete;

	}



	public void onLoad() {

		this.x = original.getX();

		this.y = original.getY();

		this.direction = Math.atan2(endY - y, endX - x);

		this.vx = (int) (Math.cos(direction) * this.speed);

		this.vy = (int) (Math.sin(direction) * this.speed);

	}



	public void update(long elapsedTime) {

		this.x += this.vx;

		this.y += this.vy;

		if (x == 0 && y == 0) {

			isComplete = true;

			return;

		}

		ActorLayer layer = original.getLayer();

		if (layer.isBounded()) {

			if (layer.contains(x, y, original.getWidth(), original.getHeight())) {

				original.setLocation(x, y);

			} else {

				isComplete = true;

			}

		} else {

			if (x + original.getWidth() < 0) {

				isComplete = true;

			} else if (x > layer.getWidth() + original.getWidth()) {

				isComplete = true;

			}

			if (y + original.getHeight() < 0) {

				isComplete = true;

			} else if (y > layer.getHeight() + original.getHeight()) {

				isComplete = true;

			}



			original.setLocation(x, y);

		}

	}



	public double getDirection() {

		return direction;

	}



}