tankcanvas.java

J2ME手机游戏源码 整个游戏有八个类组成： &#61548 主类：TankMIDlet &#61548 敌人坦克：Enemy &#61548 图片池：EnemyPool &#61548

            {
                while ((c = is.read()) !=  - 1)
                {
                    itemNum = c;
               
                    item = is.read();

                    for (i = 0; i < itemNum; i++)
                    {
                        tempInfo[j] = item;
                        tempInfo[52+j] = item;
                        tempInfo[j + 1] = item;
                        tempInfo[52+j + 1] = item;
                        j += 2;
                        if ((j % (52)) == 0)
                            j += 52;
                    }
                }
                is.close();
            }
            else
            {
                System.out.println("Could not find the map for level " + lev);
                return false;
            }
        }
        catch (java.io.IOException ex)
        {
            return false;
        }
        i = 0;
        j = 0;
        index = dataOffsetY * (52) + dataOffsetX;
        for (i = 0; i < (52) * (52); i++)
        {
            if (i >= index && i < (index + mapWidth / tileW))
                mapInfo[j++] = tempInfo[i];
            else if (i == (index + mapWidth / tileW))
            {
                index += (52);
                if (i == index)
                    mapInfo[j++] = tempInfo[i];
            }
        }
       
        //add by johnson to store the former map
        i = 0;
        j = 0;
        index = dataOffsetY * (52) + dataOffsetX;
        for (i = 0; i < (52) * (52); i++)
        {
            if (i >= index && i < (index + mapWidth / tileW))
                mapInfoFormer[j++] = tempInfo[i];
            else if (i == (index + mapWidth / tileW))
            {
                index += (52);
                if (i == index)
                    mapInfoFormer[j++] = tempInfo[i];
            }
        }
        return true;
    }

    protected void paint(Graphics g)
    {
        switch (gameStatus)
        {
            case 1:
            
                drawSplash(g);
                break;
            case 2:
             
                drawAnmi(g);
                break;
            case 3:
            
                drawMenu(g);
                break;
            case 4:
                drawGame(g);
                break;
            case 5:
                drawResult(g);
                
                break;
            case 6:
                drawOption(g);
                break;
            case 7:
                drawAbout(g);
                break;
            case 8:
            default:
                break;
        }
    }
    private void drawSplash(Graphics g)
    {
        Image imgSplash = createImage("/splash.png");
        if (imgSplash != null)
        {
            g.drawImage(imgSplash, CanvasWidth / 2, CanvasHeight / 2,
                Graphics.VCENTER | Graphics.HCENTER); 
        }
        SplashCnt++;
        if (SplashCnt == 10)
        {
            gameStatus = 2;
            gameSubStatus = 1;
            SplashCnt = 0;
        }
    }
    private void drawAnmi(Graphics g)
    {
        switch (gameSubStatus)
        {
            case 1:
                g.setColor(0x000000);
                g.fillRect(0, 0, CanvasWidth, CanvasHeight);
                imgTankEnemy = createImage("/tank_enemy.png");
                fadeColor = 0x0;
                gameSubStatus++;
                break;
            case 2:
                g.setColor(fadeColor, fadeColor, fadeColor);
                g.setFont(font);
                g.drawString("敌人开始进攻了......", CanvasWidth / 2, (CanvasHeight -
                    imgTankEnemy.getHeight() - fontHeight) / 2-3, g.TOP |
                    g.HCENTER);
                if (fadeColor < 0xfc)
                    fadeColor += 4;
                else
                {
                    gameSubStatus++;
                    title_y = imgTankEnemy.getHeight() / 2;
                    title_h = 0;
                }
                break;
            case 3:
                g.setColor(0xffffff);
                g.fillRect(0, (CanvasHeight + fontHeight) / 2-title_h,
                    CanvasWidth, title_h * 2);
                if (title_h < (imgTankEnemy.getHeight() / 2))
                {
                    title_h += 2;
                }
                else
                {
                    gameSubStatus++;
                    title_x =  - imgTankEnemy.getWidth();
                }
                break;
            case 4:
                g.setColor(0xffffff);
                g.fillRect(0, ((CanvasHeight - imgTankEnemy.getHeight() +
                    fontHeight) / 2), CanvasWidth, imgTankEnemy.getHeight());
                g.drawImage(imgTankEnemy, title_x, ((CanvasHeight -
                    imgTankEnemy.getHeight() + fontHeight) / 2), g.TOP | g.LEFT)
                    ;
                if (title_x < 0)
                {
                    title_x += 1;
                }
                else
                {
                    gameSubStatus++;
                    imgTankPlayer = createImage("/tank_player.png");
                    title_x = CanvasWidth + imgTankPlayer.getWidth();
                }
                break;
            case 5:
                g.setColor(0xffffff);
                g.fillRect(0, ((CanvasHeight - imgTankEnemy.getHeight() +
                    fontHeight) / 2), CanvasWidth, imgTankPlayer.getHeight());
                g.drawImage(imgTankEnemy, 0, ((CanvasHeight -
                    imgTankEnemy.getHeight() + fontHeight) / 2), g.TOP | g.LEFT)
                    ;
                g.drawImage(imgTankPlayer, title_x, ((CanvasHeight -
                    imgTankPlayer.getHeight() + fontHeight) / 2), g.TOP |
                    g.LEFT);
                if (title_x >= (CanvasWidth - imgTankPlayer.getWidth()))
                {
                    title_x -= 2;
                }
                else
                {
                    gameSubStatus++;
                    g.setColor(0x00);
                    g.fillRect(0, 0, CanvasWidth, ((CanvasHeight -
                        imgTankPlayer.getHeight() + fontHeight) / 2-1));
                }
                break;
            case 6:

                g.setColor(fadeColor, fadeColor, fadeColor);
                g.setFont(font);
                g.drawString("我们决一死战吧！", CanvasWidth / 2, (CanvasHeight
                    - imgTankPlayer.getHeight() - fontHeight) / 2-3, g.TOP |
                    g.HCENTER);
                if (fadeColor > 0)
                    fadeColor -= 4;
                else
                {
                    title_h = 0;
                    gameSubStatus++;
                }
                break;
            case 7:
                imgTankEnemy = null;
                imgTankPlayer = null;
                gameStatus = 3;
                gameSubStatus = 1;
            default:
                break;
        }
    }
    private void drawMenu(Graphics g)
    {
        switch (gameSubStatus)
        {
            case 1:
                g.setColor(0x0);
                g.fillRect(0, 0, CanvasWidth, CanvasHeight);
                imgTitle = createImage("/title.png");
                gameSubStatus++;
                title_y = imgTitle.getHeight() / 2;
                title_h = 0;
                break;
            case 2:
                g.setColor(0x0);
                g.fillRect(0, 0, CanvasWidth, CanvasHeight);
                g.setColor(0xffffff);
                g.fillRect(0, (CanvasHeight - imgTitle.getHeight()) / 6+title_y,
                    (CanvasWidth - imgTitle.getWidth()) / 2, title_h);
                g.fillRect((CanvasWidth + imgTitle.getWidth()) / 2,
                    (CanvasHeight - imgTitle.getHeight()) / 6+title_y,
                    (CanvasWidth - imgTitle.getWidth()) / 2, title_h);
                g.translate((CanvasWidth - imgTitle.getWidth()) / 2,
                    (CanvasHeight - imgTitle.getHeight()) / 6);
                g.setClip(0, title_y, imgTitle.getWidth(), title_h);
                g.drawImage(imgTitle, 0, 0, g.TOP | g.LEFT);
                if (title_h < imgTitle.getHeight())
                {
                    title_y -= 2;
                    title_h += 4;
                }
                else
                {
                    gameSubStatus++;
                }
                break;
            case 3:
                g.setColor(0x0);
                g.fillRect(0, 0, CanvasWidth, CanvasHeight);
                g.setColor(0xffffff);
                g.fillRect(0, (CanvasHeight - imgTitle.getHeight()) / 6+title_y,
                    (CanvasWidth - imgTitle.getWidth()) / 2, title_h);
                g.fillRect((CanvasWidth + imgTitle.getWidth()) / 2,
                    (CanvasHeight - imgTitle.getHeight()) / 6+title_y,
                    (CanvasWidth - imgTitle.getWidth()) / 2, title_h);
                g.drawImage(imgTitle, (CanvasWidth - imgTitle.getWidth()) / 2,
                    (CanvasHeight - imgTitle.getHeight()) / 6, g.TOP | g.LEFT);
                g.setColor(0x00, 0x00, 0x00);
                g.fillRect(CanvasWidth / 2-50, (CanvasHeight -
                    imgTitle.getHeight()) / 3+imgTitle.getHeight(), 100,
                    fontHeight * 3);
                g.setFont(font);
                switch (gameSelect)
                {
                case 1:
                    g.setColor(0xfe, 0x3f, 0x00);
                    g.drawString("开始游戏", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight(), g.TOP |
                        g.HCENTER);
                    g.setColor(0x00, 0xfe, 0xfe);
                    g.drawString("选择关卡", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() +
                        fontHeight, g.TOP | g.HCENTER);
                    g.drawString("游戏说明", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() + 2 *
                        fontHeight, g.TOP | g.HCENTER);
                    g.drawString("退出程序", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() + 3 *
                        fontHeight, g.TOP | g.HCENTER);
                    break;
                case 2:
                    g.setColor(0x00, 0xfe, 0xfe);
                    g.drawString("开始游戏", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight(), g.TOP |
                        g.HCENTER);
                    g.setColor(0xfe, 0x3f, 0x00);
                    g.drawString("选择关卡", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() +
                        fontHeight, g.TOP | g.HCENTER);
                    g.setColor(0x00, 0xfe, 0xfe);
                    g.drawString("游戏说明", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() + 2 *
                        fontHeight, g.TOP | g.HCENTER);
                    g.drawString("退出程序", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() + 3 *
                        fontHeight, g.TOP | g.HCENTER);
                    break;
                case 3:
                    g.setColor(0x00, 0xfe, 0xfe);
                    g.drawString("开始游戏", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight(), g.TOP |
                        g.HCENTER);
                    g.drawString("选择关卡", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() +
                        fontHeight, g.TOP | g.HCENTER);
                    g.setColor(0xfe, 0x3f, 0x00);
                    g.drawString("游戏说明", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() + 2 *
                        fontHeight, g.TOP | g.HCENTER);
                    g.setColor(0x00, 0xfe, 0xfe);
                    g.drawString("退出程序", CanvasWidth / 2, (CanvasHeight -
                        imgTitle.getHeight()) / 3+imgTitle.getHeight() + 3 *
                        fontHeight, g.TOP | g.HCENTER);
                    break;
                case 4: