istarionmidlet.java

j2me实现的一款小游戏

package istarion.midlet;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import istarion.frontend.*;
import istarion.core.GameController;

public class IstarionMIDlet extends MIDlet implements Istarion, CommandListener
{
	private Display __display; // Reference to Display object for this MIDlet

	private GameController __controller;


	/**
	 * The currently visible graphical component.
	 */
	private Displayable __currentComponent = null;


	/**
	 * MIDlet Constructor.
	 */
	public IstarionMIDlet()
	{
		__display = Display.getDisplay(this);

		Toolkit.setToolkit(new MIDPToolkit());

		__controller = new GameController(this);
		__controller.startBackend();
	}

	/**
	 * Called by application manager to start the MIDlet.
	 */
	public void startApp()
	{
		__display.setCurrent(__currentComponent);
	}


	/**
	 * A required method.
	 */
	public void pauseApp() {}

	/**
	 * A required method.
	 */
	public void destroyApp(boolean unconditional) {}


	/**
	 * Shows the specified displayable on the cell phone's screen.
	 */
	private void displayComponent(Displayable d)
	{
		__display.setCurrent(d);
		__currentComponent = d;
	}


	/**
	 * Generates and displays a welcome-screen.
	 */
	public void showStartScreen()
	{
		Canvas startScreen = new Canvas() {

			public void paint(Graphics g)
			{
				g.setColor(Toolkit.COLOR_WHITE);
				g.fillRect(0,0,getWidth(), getHeight());//clear screen
				g.setColor(Toolkit.COLOR_BLACK);

				g.setFont(
					Font.getFont(Font.FACE_PROPORTIONAL,
						Font.STYLE_ITALIC, Font.SIZE_LARGE));
				g.drawString("Istarion", getWidth() / 2, getHeight() / 4,
					Graphics.BOTTOM|Graphics.HCENTER);
			}

			public String toString()
			{
				return "startscreen";
			}

		};
		Command newGame = new Command("New", Command.SCREEN, 1);
		Command loadGame = new Command("Load", Command.SCREEN, 1);
		startScreen.addCommand(newGame);
		startScreen.addCommand(loadGame);
		startScreen.setCommandListener(this);

		displayComponent(startScreen);
	}



	/**
	 * Creates and displays the in game main menu.
	 */
	public void showMainMenu()
	{
/*
		//allgemeiner mit "Back" beschrifteter softbutton.
		__cmdBack = new Command("Back", Command.SCREEN, 1);

		//hauptmen