Android游戏开发学习之引擎用法实例详解

import android.app.Activity; import android.content.pm.ActivityInfo;

import android.os.Bundle; import android.util.DisplayMetrics;

import android.view.Window; import android.view.WindowManager;

import static box2d.bheap.Constant.*; public class MyBox2dActivity extends Activity

{ AABB worldAABB;//创建一个管理碰撞的世界

World world; Random random=new Random();

//物体列表 ArrayList<MyBody> bl=new ArrayList<MyBody>();

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState); //设置为全屏

requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams. FLAG_FULLSCREEN ,

WindowManager.LayoutParams. FLAG_FULLSCREEN); //设置为横屏模式

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); //获取屏幕尺寸

DisplayMetrics dm=new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(dm);

if(dm.widthPixels<dm.heightPixels) {

SCREEN_WIDTH=dm.widthPixels; SCREEN_HEIGHT=dm.heightPixels;

} else

{ SCREEN_WIDTH=dm.heightPixels;

SCREEN_HEIGHT=dm.widthPixels; }

worldAABB = new AABB(); //上下界，以屏幕的左上方为原点，如果创建的刚体到达屏幕的边缘的话，会停止模拟

worldAABB.lowerBound.set(-100.0f,-100.0f); worldAABB.upperBound.set(100.0f, 100.0f);//注意这里使用的是现实世界的单位

Vec2 gravity = new Vec2(0.0f,10.0f); boolean doSleep = true;

//创建世界 world = new World(worldAABB, gravity, doSleep);

//创建4边 final int kd=40;//宽度或高度

MyRectColor mrc=Box2DUtil.createBox(kd/4, SCREEN_HEIGHT/2, kd/4, SCREEN_HEIGHT/2, true,world,0xFFe6e4FF); bl.add(mrc);