dongsprite.java

利用j2me所开发的一个角色扮演类游戏

import java.io.IOException;

import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.game.Sprite;
import javax.microedition.lcdui.game.TiledLayer;

public class DongSprite extends Sprite implements Runnable {
	int bombNum;// 主角拥有炸弹的数量
	int score; // 主角的积分
	int lastdirection;// 保存主角的最后的方向64DOWN 2UP 4LEFT 32RIGHT
	int screenW; // 背景宽度
	int screenH; // 背景高度
	Sprite meetSprite; // 精灵的脚
	Bomb bomb;// 创建炸弹精灵
	private int x;
	private int y;// 保存当前精灵所在位置
	private int[] down = { 0, 1, 2 };
	private int[] left = { 6, 7, 8 };
	private int[] right = { 3, 4, 5 };
	private int[] up = { 9, 10, 11 };
	private int[] bombNext = { 0, 1, 2, 3 };
	// 为移动方向作准备
	public DongSprite(Image image1, int width, int height) {
		super(image1, width, height);
		Image img1 = null;
		try {
			img1 = Image.createImage("/meet.png");
		} catch (IOException e) {
			e.printStackTrace();
		}
		meetSprite = new Sprite(img1);
		try {
			img1 = Image.createImage("/bomb1.png");
		} catch (IOException e) {
			e.printStackTrace();
		}
		bomb = new Bomb(img1, 75, 80);
		this.bomb.setFrameSequence(bombNext);

		this.bomb.setVisible(false);
		this.defineReferencePixel(width / 2, height / 2);
		this.setFrameSequence(down); // 初始化方向

		lastdirection = 64;
		bombNum = 0;
		score = 0;

	}

	public void collidesWithBomb() {
		// 捡到炸弹
		this.bombNum++;
		if (this.bombNum > 10) {
			bombNum = 10;
		}
	}

	public void useBomb(int direction, int distance) {
		// 使用炸弹

		if (this.bombNum > 0) {
			this.bombNum--;
			if (this.bombNum < 0) {
				bombNum = 0;
			}
			int x, y;
			x = this.meetSprite.getX();
			y = this.meetSprite.getY();

			if (direction == 64) {// 向下
				y = y + distance;
				if (y > this.screenH) {
					y = this.screenH;
				}
			} else if (direction == 2) {// 向上
				y = y - distance;
				if (y < 0) {
					y = 0;
				}
			} else if (direction == 4) {// 向左
				x = x - distance;
				if (x < 0) {
					x = 0;
				}
			} else if (direction == 32) {// 向右
				x = x + distance;
				if (x > this.screenW) {
					x = this.screenW;
				}
			}
			this.bomb.setPosition(x, y);
			this.bomb.setVisible(true);
			GameCenter.zaLayer.setCell((x) / 61, (y) / 41, 0);
			Thread t = new Thread(this);
			t.start();
		}

	}

	public void forward(int direction, int distance) {
		// 移动精灵，direction方向，distance距离

		if (direction == 64) { // 向下走
			if (direction != this.lastdirection) {
				this.setFrameSequence(down);
				this.lastdirection = direction;
			} else {
				this.nextFrame();
			}
			spriteMove(0, distance);
		} else if (direction == 2) {// 向上走
			if (direction != this.lastdirection) {
				this.setFrameSequence(up);
				this.lastdirection = direction;
			} else {
				this.nextFrame();
			}
			spriteMove(0, -distance);
		} else if (direction == 4) {// 向左走
			if (direction != this.lastdirection) {
				this.setFrameSequence(left);
			} else {
				this.nextFrame();
			}
			spriteMove(-distance, 0);
		} else if (direction == 32) {// 向右走
			if (direction != this.lastdirection) {
				this.setFrameSequence(right);
			} else {
				this.nextFrame();
			}
			spriteMove(distance, 0);
		}
		this.lastdirection = direction;

	}

	private void spriteMove(int mx, int my) {
		x = this.getX();
		y = this.getY();
		x += mx;
		y += my;

		if (x < 0 || x > (this.screenW - 38)) {
			x -= mx;
		}
		if (y < 0 || y > (this.screenH - this.getHeight() - 30)) {
			y -= my;
		}
		this.setPosition(x, y);
		// this.meetSprite.setPosition(x, y);
		this.meetSprite.setPosition(x
				+ (this.getWidth() - this.meetSprite.getWidth()) / 2, y
				+ (this.getHeight() - this.meetSprite.getHeight()));
		this.bomb.setPosition(x, y);

	}

	public void run() {
		try {
			Thread.sleep(80);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		this.bomb.nextFrame();
		try {
			Thread.sleep(20);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		this.bomb.nextFrame();
		try {
			Thread.sleep(20);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		this.bomb.nextFrame();
		try {
			Thread.sleep(20);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		this.bomb.setVisible(false);
		Thread.yield();

	}

}