SRPGForceEffect.java

/**
 * 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：ceponline@yahoo.com.cn
 * @version 0.1
 */
package loon.srpg.effect;

import loon.LSystem;
import loon.canvas.LColor;
import loon.opengl.GLEx;
import loon.utils.MathUtils;

// 掠夺某些事物的效果
public class SRPGForceEffect extends SRPGEffect {

	private int s_x;

	private int s_y;

	private LColor color;

	private int[] max;

	private boolean[] exist;

	private TriangleEffect[] arrow;

	public SRPGForceEffect(int x1, int y1, int x2, int y2) {
		this(x1, y1, x2, y2, 100, LColor.red);
	}

	public SRPGForceEffect(int x1, int y1, int x2, int y2, int v, LColor color) {
		this.setExist(true);
		this.s_x = x1;
		this.s_y = y1;
		this.color = color;
		this.arrow = new TriangleEffect[v];
		this.max = new int[v];
		this.exist = new boolean[v];
		float[][] res = { { -16f, -12f }, { -8f, -16f }, { -8f, -8f } };
		float[] res1 = { 0.0f, 0.0f };
		for (int i = 0; i < arrow.length; i++) {
			max[i] = 0;
			exist[i] = true;
			int r1 = (x2 + (MathUtils.random.nextInt(64)) - 32);
			int r2 = (y2 + (MathUtils.random.nextInt(64)) - 32);
			float d = r1 - x1;
			float d1 = r2 - y1;
			float d2 = MathUtils.sqrt(MathUtils.pow(d, 2f)
					+ MathUtils.pow(d1, 2f));
			float d3 = (d / d2) * 4f;
			float d4 = (d1 / d2) * 4f;
			max[i] = (int) (d2 / 4f + 0.5f);
			arrow[i] = new TriangleEffect(res, res1, d3, d4 * -1f, 36f);
			arrow[i].setVector((TriangleEffect.getDegrees(x1 - r1, (y1 - r2)
					* -1) + 0.5f + i * -15));
		}

	}

	@Override
	public void draw(GLEx g, int tx, int ty) {
		next();
		g.setColor(color);
		boolean flag = false;
		for (int j = 0; j < arrow.length; j++) {
			if (0 > max[j]) {
				exist[j] = false;
			}
			if (!exist[j]) {
				continue;
			}
			flag = true;
			if (j * 1 <= super.frame) {
				arrow[j].drawPaint(g, s_x - tx, LSystem.viewSize.height
						- (s_y - ty));
				max[j]--;
			}
		}
		if (!flag) {
			setExist(false);
		}
	}

}