kumaapp.java

j2me 的小游戏

/*
 * Kuma.java
 *
 * Copyright 1999 JJKING Software, Junichi Ito <[e-mail]>
 * Permission to use, copy, modify, and distribute this software and its
 * documentation without fee for NON-COMMERCIAL is free.
 */
 
import com.sun.kjava.*;

/**
 * This is the main application. 
 *
 * @version 1.0  1999/10/2
 */
public class KumaApp extends Spotlet
{
	/**
	 * The GUI components.
	 */
	Button comeButton;
	Button byeButton;
	Button exitButton;

	/**
	 * The animation characters.
	 */
	Kuma kuma;
	
	/**
	 * The bounds of animation field.
	 */
	static Rectangle fieldBounds = new Rectangle(2, 2, 156, 136);
	
	/**
	 * The animation manager.
	 */
	AnimManager animMgr;
	
	/**
	 * Creates a spotlet and registers its event handlers.
	 */
	public static void main(String[] args)
	{
		(new KumaApp()).register(NO_EVENT_OPTIONS);
	}

	/**
	 * Create screen and start programs.
	 */
	public KumaApp()
	{
		// GUI components
		comeButton = new Button("Come on", 8, 142);
		byeButton = new Button("Bye", 56, 142);
		exitButton = new Button("Exit", 136, 142);
		
		// initialize animation manager
		animMgr = new AnimManager(fieldBounds);

		// paint screen
		Graphics g = Graphics.getGraphics();
		paint(g);
	}

	/**
	 * Clears and draw screen.
	 */
	void paint(Graphics g)
	{
		g.clearScreen();
		update(g);
	}

	/**
	 * Draw screen.
	 */
	void update(Graphics g)
	{
		// border
		g.drawBorder(fieldBounds.x
			, fieldBounds.y
			, fieldBounds.width
			, fieldBounds.height
			, g.PLAIN
			, g.borderType(4, 0, 1));
		
		// GUI components
		comeButton.paint();
		byeButton.paint();
		exitButton.paint();
	}

	/**
	 * Handles pen down event.
	 */
	public void penDown(int x, int y)
	{
		if (exitButton.pressed(x,y)) {
			System.exit(0);
		}
		else if (comeButton.pressed(x,y)) {
			try {
				Kuma newKuma = new Kuma();
				animMgr.add(newKuma);
				kuma = newKuma;
			}
			catch(AnimException ex) {}
		}
		else if (byeButton.pressed(x,y)) {
			if (kuma != null) { kuma.bye(); }
		}
	}
}