mycanvas.java

J2ME的拼图魔方游戏

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.puzzle.j2me;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import java.util.Random;

/**
 *
 * @author Paddy
 */
public class MyCanvas extends Canvas
{

    public int[][] pics = new int[4][3];
    public Image[] images = new Image[12];
    public int step = 0;
    public int spaceX = 2;
    public int spaceY = 3;
    public int spaceValue = 0;
    public String[] imgSrc = new String[12];

    public MyCanvas()
    {
        this.setFullScreenMode(true);
        for (int i = 0; i < 4; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                pics[i][j] = i * 3 + j + 1;
            }
        }
        //pics[3][2] = 0;

        Random rand = new Random();
        for (int i = 0; i < 3; i++)
        {
            int x1 = rand.nextInt(3);
            int y1 = rand.nextInt(3);
            int x2 = rand.nextInt(3);
            int y2 = rand.nextInt(3);
            int n = pics[y1][x1];
            pics[y1][x1] = pics[y2][x2];
            pics[y2][x2] = n;
        }


        for (int i = 1; i <= 9; i++)
        {
            imgSrc[i] = "/img_r" + String.valueOf((i + 2) / 3) + "_c" + String.valueOf((i - 1) % 3 + 1) + ".png";
            try
            {
                images[i] = Image.createImage(imgSrc[i]);
            }
            catch (Exception e)
            {
                //不做处理
            }
        }
        try
        {
            images[10] = Image.createImage("/img_0.png");
        }
        catch (Exception e)
        {
            //不做处理
        }


    }

    public void clearBackground(Graphics g)
    {
        int color = g.getColor();
        g.setColor(0xffffff);
        g.fillRect(0, 0, getWidth(), getHeight());
        g.setColor(color);
    }

    public void paint(Graphics g)
    {
        clearBackground(g);
        g.setColor(0x000000);

        g.drawRect(1, 1, 237, 317);
        g.drawLine(1, 80, 237, 80);
        g.drawLine(1, 159, 237, 159);
        g.drawLine(1, 238, 237, 238);
        g.drawLine(80, 1, 80, 238);
        g.drawLine(159, 1, 159, 317);


        //根据pics数组和images数组的内容绘图到网格中
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 3; j++)
            {
                g.drawImage(images[pics[i][j]], j * 79 + 2, i * 79 + 2, Graphics.TOP | Graphics.LEFT);
            }
        }
        g.drawImage(images[pics[3][2]], 160, 239, Graphics.TOP | Graphics.LEFT);

        g.drawString("步数：", 20, 300, Graphics.BOTTOM | Graphics.LEFT);
        g.setColor(0xcccccc);
        g.fillRect(60, 280, 60, 20);
        g.setColor(0xffff0f);
        g.drawString(String.valueOf(step), 75, 300, Graphics.BOTTOM | Graphics.LEFT);

    }

    public void keyPressed(int keyCode)
    {
        switch (getGameAction(keyCode))
        {
            case RIGHT:
                right();
                break;
            case LEFT:
                left();
                break;
            case UP:
                up();
                break;
            case DOWN:
                down();
                break;
        }
        repaint();
        if(win())
        {
            down();
            up();
            left();
            right();
        }
    }

    //spaceX = 2;
    //spaceY = 3
    public void up()
    {
        if (spaceY < 2 || (spaceX == 2 && spaceY == 2))
        {
            pics[spaceY][spaceX] = pics[spaceY + 1][spaceX];
            pics[spaceY + 1][spaceX] = 10;
            spaceY++;
            step++;
        }
    }
    public void down()
    {
        if (spaceY > 0)
        {
            pics[spaceY][spaceX] = pics[spaceY - 1][spaceX];
            pics[spaceY - 1][spaceX] = 10;
            spaceY--;
            step++;
        }
    }
    public void left()
    {
        if (spaceX < 2)
        {
            pics[spaceY][spaceX] = pics[spaceY][spaceX + 1];
            pics[spaceY][spaceX + 1] = 10;
            spaceX++;
            step++;
        }
    }
    public void right()
    {
        if (spaceX > 0 && spaceY < 3 )
        {
            pics[spaceY][spaceX] = pics[spaceY][spaceX - 1];
            pics[spaceY][spaceX - 1] = 10;
            spaceX--;
            step++;
        }
    }

    public boolean win()
    {
        for(int i = 0; i < 4; i++)
        {
            for( int j = 0; j <3; j++)
            {
                if (pics[i][j] != i * 3 + j + 1)
                return false;
            }
        }
        return true;
    }

    
}