maincanvas.java

经典的游戏

package demo;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.game.GameCanvas;
import javax.microedition.m3g.Camera;
import javax.microedition.m3g.Graphics3D;
import javax.microedition.m3g.Light;
import javax.microedition.m3g.Loader;
import javax.microedition.m3g.World;


public class MainCanvas extends GameCanvas implements Runnable{
	private boolean	m_bRunning;				//控制项目运行
	private Light	m_Light;
	private Graphics3D m_G3D;
	private World m_World;
	private long m_lStartTime;
	
	public MainCanvas(){
		super(true);
		Reset();
		Start();								//启动线程
	}
	public void Reset(){
		try {
			m_World = (World)( Loader.load("/demo/skaterboy.m3g")[0] );
			
			Camera	camera = m_World.getActiveCamera();
			if( camera != null ){
				float aspect = (float) getWidth() / (float) getHeight();
				camera.setPerspective(30.0f, aspect, 1.0f, 1000.0f);
			}
			m_lStartTime = System.currentTimeMillis();
		}catch (Exception e) { e.printStackTrace(); }
		
		m_G3D = Graphics3D.getInstance();
		
		m_Light = new Light();
		m_Light.setMode(Light.OMNI);
		m_Light.setColor(0xFF00FFFF);
		m_G3D.addLight(m_Light, null);
	}
	public void Start(){
		m_bRunning = true;
		Thread thread = new Thread(this);		//分配新线程
		thread.start();							//线程启动
	}
	public void run() {						//新线程自动调用此方法
		//获得系统当前时间,并将时间换算成毫秒
		long T1 = System.currentTimeMillis();
		long T2 = T1;
		while(m_bRunning){
			T2 = System.currentTimeMillis();
			if( T2 - T1 > 100 ){			    //间隔100毫秒
				T1 = T2;
				Input();
				Logic();
				Paint();
			}
		}
	}
	public void Stop(){						//终止游戏
		m_bRunning = false;
	}
	public void Input(){
	}
	public void Logic(){
	}
	public void Paint(){
		Graphics g = getGraphics();
		
		m_G3D.bindTarget(g);
		
		m_G3D.clear(null);
				
		long time = System.currentTimeMillis() - m_lStartTime;
		m_World.animate( (int)time );

		m_G3D.render(m_World);
		m_G3D.releaseTarget();
		
		flushGraphics();
	}
}