menucanvas.java

一款修改过的手机贪食蛇游戏

/*
 * MenuCanvas.java
 *
 * Created on June 19, 2007, 12:51 AM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package hello;

import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

/**
 *
 * @author jiabei
 */
public class MenuCanvas  extends Canvas implements CommandListener {
    
    private Display display;
    private Midlet midlet;
    private GamingCanvas gamingCanvas;
    
    private long frameDelay;
    private int maxFruitNum;
    private int width;
    private int height;
    private int snakeNum;
    private Snake[] snake;
    private boolean canCollide;
    private int victoryFruitNum;
    
    private static int SNAKE_INITIATE_LEN = 3;
    
    /** Creates a new instance of MenuCanvas */
    public MenuCanvas(Display display, Midlet midlet) {
        this.midlet = midlet;
        this.display = display;
        Command cmdNewGame = new Command("New", "New game", Command.ITEM, 2);
        Command cmdExit = new Command("Exit", "Exit", Command.EXIT, 1);
        
        this.addCommand(cmdNewGame);
        this.addCommand(cmdExit);
        this.setCommandListener(this);
        
        initialize();
    }
    
    void initialize() {
        canCollide = false;
        frameDelay = 0;
        maxFruitNum = 20;
        width = 48;
        height = 64; 
        snakeNum = 3;
        victoryFruitNum = 25;
        snake = new Snake[snakeNum];
        snake[0] = new Snake(Snake.CONTROL_KEYBOARD, Snake.DIRECTION_RIGHT, SNAKE_INITIATE_LEN, 10, 10);
        snake[1] = new Snake(Snake.CONTROL_AI, Snake.DIRECTION_RIGHT, SNAKE_INITIATE_LEN, 25, 30);
        snake[2] = new Snake(Snake.CONTROL_AI, Snake.DIRECTION_RIGHT, SNAKE_INITIATE_LEN, 10, 20);
        gamingCanvas = new GamingCanvas(display, this, frameDelay, maxFruitNum, victoryFruitNum, width, height, snakeNum, snake, canCollide);
    }
    
    public void paint(Graphics g) {
        
    }
    
    public void commandAction(Command c, Displayable s) {
        if (c.getLabel().equals("New")) {            
            initialize();
            display.setCurrent(gamingCanvas);
            gamingCanvas.start();
        } else if (c.getLabel().equals("Exit")) {
            midlet.notifyDestroyed();
        }
    }
    
    
}