logocanvas.java

用J2ME写的一种五子连线的手机游戏。ColorLinez是一款由玩家通过功能键移动各色小球

package game;

import javax.microedition.lcdui.*;

public class LogoCanvas extends Canvas implements Runnable 
{
	//display对象
	private Display display;

	//线程
	private Thread thread;

	//图片对象
	private Image image;

	//是否显示文字
	private boolean flag = true;

	//提示文字
	private String info = "按任意键继续...";

	private int logoNum = 0;
	
	public LogoCanvas(Display display, int logoNum)
	{
		this.display = display;
		this.logoNum = logoNum;
        //设置全屏
		this.setFullScreenMode(true);
		//导入图片
		try
		{
			image = Image.createImage("/res/logo" + logoNum + ".png");
		}
		catch (Exception e)
		{}

		//启动线程
		thread = new Thread(this);
		thread.start();
	}
	
	protected void paint(Graphics g)
	{
		g.drawImage(image, 0, 0, Graphics.TOP | Graphics.LEFT);

		if (flag)
		{
			g.setColor(0xffffff);
			g.drawString(info, 50, 140, Graphics.LEFT | Graphics.TOP);
		}
	}

	protected void keyPressed(int keyCode)
	{
		//按任意键继续
		thread = null;
		image = null;
		if ( logoNum == 1 )
		{
			display.setCurrent(new LogoCanvas(display, 2));
		}
		else
		{
		    //显示游戏菜单界面
		    display.setCurrent(new MainMenuCanvas(display));
		}
	}

	public void run()
	{
		//获得当前运行的线程
		Thread curr = Thread.currentThread();
		int i = 0;
		while (curr == thread)
		{
			//暂停0.3秒
			try
			{
				Thread.sleep(300);
			}
			catch (Exception e) 
			{}

			//记数
			i++;
			//改变文字显示的状态
			flag = !flag;

			//如果暂停满3秒，则切换屏幕
			if (i == 9)
			{
				thread = null;
				image = null;
				if ( logoNum == 1 )
				{
					display.setCurrent(new LogoCanvas(display, 2));
				}
				else
				{
				    //显示游戏菜单界面
				    display.setCurrent(new MainMenuCanvas(display));
				}
			}
			//重新绘制
			repaint();
		}
	}
}