Android游戏开发教程：手教你写跳跃类游戏

[align=center]Android游戏开发教程：手教你写跳跃类游戏[/align]



package jumpball.game;

import android.app.Activity;

import android.os.Bundle;

import android.util.DisplayMetrics;

import android.view.Window;

import android.view.WindowManager;

public class GameActivity extends Activity {

GameView mView;

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);// 设置无标题

getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,

WindowManager.LayoutParams.FLAG_FULLSCREEN);// 设置全屏模式

//获取系统的屏幕属性

DisplayMetrics dm = new DisplayMetrics();

getWindowManager().getDefaultDisplay().getMetrics(dm);

mView = new GameView(this, dm.widthPixels, dm.heightPixels);

//应用这个布局

setContentView(mView);

}

}

[java] view plaincopyprint?

GameView.java

[java] view plaincopyprint?

package jumpball.game;

import android.content.Context;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.view.SurfaceHolder;

import android.view.SurfaceView;

import android.view.SurfaceHolder.Callback;

//本身就是一个Runnable接口

public class GameView extends SurfaceView implements Callback, Runnable {

public int width, height;

private Canvas mCanvas;

//刷新界面线程

private Thread mThread;

//处理者

private SurfaceHolder mSurfaceHolder;

private boolean mIsRunning = false;

private int TIME_IN_FRAME = 50;

GameActivity gameActivity;

public GameView(Context context, int width, int height) {

super(context);

//setFocusable(true);

//activity是 context的一个子类。

gameActivity = (GameActivity) context;

this.width = width;

this.height = height;

mSurfaceHolder = getHolder();

mSurfaceHolder.addCallback(this);

}

public void mDraw() {

//设置画布的颜色

mCanvas.drawColor(Color.WHITE);

drawBG(mCanvas);

}

public void drawBG(Canvas mCanvas) {

Paint mPaint = new Paint();

mPaint.setColor(Color.BLACK);

//设置透明度

mPaint.setAlpha(50);

//设置抗锯齿

mPaint.setAntiAlias(true);

float h = height * 0.01666667f;

for (int i = 0; i < height; i += h) {

mCanvas.drawLine(0, i, width, i, mPaint);

}

}

public void surfaceChanged(SurfaceHolder holder, int format, int width,

int height) {

}

public void surfaceCreated(SurfaceHolder holder) {

mIsRunning = true;

//新建一个刷屏线程

mThread = new Thread(this);

mThread.start();

}

public void surfaceDestroyed(SurfaceHolder holder) {

//销毁这个，

mIsRunning=false;

}

public void run() {

//决定线程是否继续执行

while (mIsRunning) {

long startTime = System.currentTimeMillis();

//调用mDraw进行绘制

synchronized (mSurfaceHolder) {

mCanvas = mSurfaceHolder.lockCanvas();

mDraw();

mSurfaceHolder.unlockCanvasAndPost(mCanvas);

}

long endTime = System.currentTimeMillis();

int diffTime = (int) (endTime - startTime);

while (diffTime < TIME_IN_FRAME) {

diffTime = (int) (System.currentTimeMillis() - startTime);

Thread.yield();

}

}

}

}







游戏介绍：这次编写的游戏是一款跳跃类游戏,类似与涂鸦跳跃。我们通过小球触碰方块，完成小球的跳跃。我们将在这一列的博客中来实现这款游戏的开发。

小小游戏，只供娱乐！！！