android 小弹球app源码

package com.example.tanqou;import java.util.Random;import java.util.Timer;import java.util.TimerTask;import org.cocos2d.nodes.CCSprite;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.app.Activity;import android.content.Context;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.util.DisplayMetrics;import android.util.Log;import android.view.Display;import android.view.KeyEvent;import android.view.Menu;import android.view.MotionEvent;import android.view.View;import android.view.WindowManager;/** * 小弹球游戏 * @author WangKunjie * */public class MainActivity extends Activity { //随机数。每次进入游戏初始不一样 Random rand = new Random(); private double xyRate = rand.nextDouble() - 0.5; //一个-0.5~0.5的比率,控制小球的方向 //屏幕宽，高 private int tablewidth; private int tableheight; //球拍的水平位置，垂直位置，宽度，高度 private int racketx = rand.nextInt(200);//***每次进入游戏得到随机球拍初始位置 private int rackety ; private int RACKET_WIDTH = 100; private int RACKET_HEIGHT = 15; //球的大小，x和Y坐标 private int BALL_SIZE = 12; private int ballx = rand.nextInt(200) 20;//***每次进入游戏得到随机小球初始位置 private int bally = rand.nextInt(10) 20;//*** //球的纵向速度,横向速度 private int yspeed = 20; private int xspped = (int) (yspeed*xyRate*2); //***每次进入游戏得到一个随机的横向速度 //游戏是否结束的标志 private boolean isLose = false; //球拍的旧xy坐标 int oldx; int oldy; int r =(int)(Math.random()*220);int g =(int)(Math.random()*220);int b =(int)(Math.random()*220);int a =(int)(Math.random()*220);int score =0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final GameView gameView = new GameView(this); setContentView(gameView); getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN , WindowManager.LayoutParams.FLAG_FULLSCREEN); WindowManager windowManager = getWindowManager(); Display display = windowManager.getDefaultDisplay(); DisplayMetrics metrics = new DisplayMetrics(); display.getMetrics(metrics); tablewidth = metrics.widthPixels; tableheight = metrics.heightPixels; Log.i("mydate" , tablewidth " " tableheight); rackety = tableheight - 80; final Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { if (msg.what == 1){ gameView.invalidate(); } } }; gameView.setOnKeyListener(new View.OnKeyListener() { //按键 @Override public boolean onKey(View v, int keyCode, KeyEvent event) { switch (event.getKeyCode()){ case KeyEvent.KEYCODE_A: if (racketx > 0) racketx -= 10; break; case KeyEvent.KEYCODE_D: if (racketx < tablewidth - RACKET_WIDTH) racketx = 10; break; } gameView.invalidate();//控制球拍左右移动 return true; } }); gameView.setOnTouchListener(new View.OnTouchListener() { //触摸 @Override public boolean onTouch(View v, MotionEvent event) { int nowx = (int) event.getX(); //int nowy = (int) event.getY(); switch (event.getAction()){ case MotionEvent.ACTION_DOWN: oldx = nowx; //oldy = nowy; break; case MotionEvent.ACTION_MOVE: if (nowx > oldx){ //向右移动 racketx = 10; } else if (nowx < oldx) {//向左移动 racketx -= 10; } oldx = nowx; break; case MotionEvent.ACTION_UP: oldx = nowx; break; } gameView.invalidate(); return true; } }); final Timer timer = new Timer(); timer.schedule(new TimerTask() { @Override public void run() { //小球碰到游戏界面左右边框时 if (ballx <= 0 || ballx >= tablewidth - BALL_SIZE){ xspped = -xspped; //横向速度反向 } //如果小球的高度超出了球拍的位置，且横向不在球拍的范围内，则GAME OVER if (bally >= rackety - BALL_SIZE && (ballx < racketx || ballx > racketx RACKET_WIDTH)){ timer.cancel(); isLose = true; //游戏结束标志 } //如果小球在拍的范围内或碰到顶部，小球反弹 else if (bally <= 0 ){ yspeed = -yspeed; //纵向速度反向 } else if(bally >= rackety-BALL_SIZE && ballx > racketx && ballx < racketx RACKET_WIDTH){ yspeed = -yspeed; r =(int)(Math.random()*220); g =(int)(Math.random()*220); b =(int)(Math.random()*220); a =(int)(Math.random()*220); score =5; } //小球坐标不停的改变 bally = yspeed; ballx = xspped; handler.sendEmptyMessage(1); } } , 0 , 100); //每0.1秒执行刷新 } class GameView extends View{ Paint paint = new Paint(); public GameView(Context context) { super(context); setFocusable(true); } @Override protected void onDraw(Canvas canvas) { super.onDraw(canvas); paint.setStyle(Paint.Style.FILL); paint.setAntiAlias(true); if (isLose){ paint.setColor(Color.RED); paint.setTextSize(40); canvas.drawText("GAME OVER" , tablewidth/2-100 , 200 , paint); } else { paint.setARGB(a, r, g, b); canvas.drawCircle(ballx , bally , BALL_SIZE , paint); //绘制小球 paint.setColor(Color.BLUE); canvas.drawRect(racketx , rackety , racketx RACKET_WIDTH , rackety RACKET_HEIGHT , paint);//绘制球拍 paint.setColor(Color.RED); canvas.drawText("分数:" score, 50, 50, paint); } } } }