playcanvas.java

一个类似电子宠物的游戏`对需要做这类游戏的人有帮助`

package Petgame;

import javax.microedition.lcdui.*;

public class PlayCanvas extends Canvas implements Runnable {
	/** Constructor */
	private Image pic;

	private Thread thread;

	private boolean run = false;

	public PlayCanvas() {
		try {
			jbInit();
		} catch (Exception e) {
			e.printStackTrace();
		}
		petinit();
		thread = new Thread(this);
		thread.start();
	}

	private Pet pet;

	/** Component initialization */
	private void jbInit() throws Exception {
		// Set up this Displayable to listen to command events
		setCommandListener(new PlayCanvas_CommandAdapter(this));
		// add the Exit command
		addCommand(new Command("Exit", Command.EXIT, 1));
		addCommand(new Command("Start", Command.OK, 1));

	}

	private void petinit() {
		try {
			pic = Image.createImage("/Petgame/pet.png");
		} catch (Exception e) {
			e.printStackTrace();
		}

		pet = new Pet(pic, 110, 115);
		pet.setpos(30, 30);
	}

	/** Handle command events */
	public void this_commandPerformed(Command command, Displayable displayable) {
		/** @todo Add command handling code */
		if (command.getCommandType() == Command.EXIT) {
			// stop the MIDlet
			Petgame.quitApp();
		} else if (command.getCommandType() == Command.OK) {
			// stop the MIDlet
			run = true;
		}
	}

	/** Required paint implementation */
	public void run() {
		while (true) {
			
			try {
				Thread.sleep(200);
			} catch (Exception e) {
				e.printStackTrace();
			}
			repaint();
		}
	}

	protected void paint(Graphics g) {
		/** @todo Add paint codes */
		if (run) {
			g.setColor(255,255,255);
			g.fillRect(0,0,g.getClipHeight(),g.getClipWidth());
			g.setColor(0,0,0);
			pet.paint(g);
			pet.drawMsg(g);
			pet.playing();
			}

	}

	protected void keyPressed(int keyCode) {
		int action = getGameAction(keyCode); /* 僉乕偺抣撉傒庢傝 */

		if (action == Canvas.LEFT) {
			pet.dining();
		} else if (action == Canvas.RIGHT) {
			pet.playgame();
		} else if (action == Canvas.UP) {
			pet.repose();
		} else if (action == Canvas.DOWN) {
			pet.nextframe();
		}
	}

	class PlayCanvas_CommandAdapter implements CommandListener {
		private PlayCanvas instance;

		public PlayCanvas_CommandAdapter(PlayCanvas instance) {
			this.instance = instance;
		}

		public void commandAction(Command command, Displayable displayable) {
			instance.this_commandPerformed(command, displayable);
		}
	}
}