📄 hitbrick.java.bak
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import javax.microedition.midlet.* ;
import javax.microedition.lcdui.* ;
import java.util.Random ;
//主类
public class HitBrick extends MIDlet
{
//成员变量 //////////////////////////////////////////////////////////////////
//主类
//主Display 对象及根据需要重载的canvas对象
private Display display ;
private MyCanvas canvas ;
//调试开关，置为true后可输出调试信息
private boolean debug ;
//主类
//成员变量 END////////////////////////////////////////////////////////////////
//成员函数 //////////////////////////////////////////////////////////////////
//主类
public HitBrick()
{
display = Display.getDisplay(this);
canvas = new MyCanvas(this) ;
}
protected void startApp()
{
display.setCurrent(canvas) ;
}
protected void pauseApp()
{
}
protected void destroyApp(boolean unconditional)
{
}
public void exitMIDlet()
{
destroyApp(true) ;
notifyDestroyed() ;
}
//主类
//成员函数 END////////////////////////////////////////////////////////////////
//嵌套类 //////////////////////////////////////////////////////////////////
//主类
//实用Canvas类包含图形控制及游戏逻辑
class MyCanvas extends Canvas implements CommandListener
{
//成员变量 //////////////////////////////////////////////////////////////////
//class MyCanvas
//界面中所用的命令
private Command exit ;
private Command start ;
//外层的主类的引用
private HitBrick hitBrick ;
//需绘制的对象列表
private NormalObject paintList[] ;
private int listCount = 0 ;
//砖块列表_1
private NormalObject Bricks_1[][] = new NormalObject[6][3] ;
//private NormalObject
//游戏中撞球和击球板的实例
private Ball ball ;
private Plate plate ;
//让砖块的多个实例共享的图像对象
private Image brick ;
private Image brick_1 ;
private Image loss ;
private Image win ;
//游戏区屏幕尺寸
private int width, height ;
//玩家积分及砖块计数,当前级别
private int mark, brickCount, layer ;
private int dieLine ;
private boolean getWin ;
//键盘按下标志
private boolean left, right, up, down, fire ;
//调试文本输出
private Ticker ticker ;
//随机数发生器
private RandomG randomG = new RandomG() ;
//class MyCanvas
//成员变量 END////////////////////////////////////////////////////////////////
//成员函数 //////////////////////////////////////////////////////////////////
//class MyCanvas
public MyCanvas(HitBrick hitBrick)
{
if(debug)
{
ticker = new Ticker(" ");
setTicker(ticker) ;
}
//引入主类的实例
this.hitBrick = hitBrick ;
//初始化玩家的分，及砖块计数
mark = 0 ;
brickCount = 3* 6 ;
layer = 0 ;
dieLine = 10;
//初始化命令并加载
exit = new Command("Exit", Command.EXIT, 1) ;
start = new Command("Start", Command.SCREEN, 2) ;
addCommand(exit) ;
addCommand(start) ;
setCommandListener(this) ;
//初始化游戏区屏幕尺寸
width = getWidth() ;
height = getHeight() - 15 ;
//初始化击球板及球
plate = new Plate("/pic/j6.png", 20, 100, 0.0f, 0.0f, false) ;
ball = new Ball("/pic/j5.png", width/2 - 40 + (randomG.nextG(10) % 80) , 3* 18,
( randomG.nextG(5) > 15 ? -1.5f : 1.5f), 1.5f, false) ;
//载入砖块图像
try
{
brick = Image.createImage("/pic/j8.png") ;
brick_1 = Image.createImage("/pic/j9.png") ;
loss = Image.createImage("/pic/j10.png") ;
win = Image.createImage("/pic/j11.png") ;
}
catch(Exception e)
{
}
//初始化每个砖块
for(int y = 0 ;y < 3 ;y++)
for(int x = 0 ;x < 6 ;x ++)
{
Bricks_1[x][y] = new Brick(x * 32 , 18 * y, 32, 18, 1 , 1, 0) ;
}
//将击球板定位到游戏区底部
plate.setPos( (width - plate.cx)/2, height - plate.cy) ;
//初始化移动对象的绘制列表
paintList = new NormalObject[10] ;
paintList[0] = ball ;
paintList[1] = plate ;
listCount = 2 ;
if(debug)
{
ticker.setString("width is " + width + "height is " + height) ;
}
}
protected void changeLevel(int level)
{
switch(level)
{
case 1:
//重置每个砖块
for(int y = 0 ;y < 3 ;y++)
for(int x = 0 ;x < 6 ;x ++)
{
if(y == 2)
((Brick)Bricks_1[x][y]).set(2 , 2, 1) ;
else
((Brick)Bricks_1[x][y]).set(1 , 1, 0) ;
}
brickCount = 18 ;
ball.x = (randomG.nextG(10) % 80) ;
ball.y = 3 * 18 ;
ball.vx = ( randomG.nextG(5) > 15 ? -1.5f : 1.5f) ;
ball.vy = 1.5f ;
break;
case 2:
//重置每个砖块
for(int y = 0 ;y < 3 ;y++)
for(int x = 0 ;x < 6 ;x ++)
{
((Brick)Bricks_1[x][y]).set(2 , 2, 1) ;
}
brickCount = 18 ;
ball.x = (randomG.nextG(10) % 80) ;
ball.y = 3 * 18 ;
ball.vx = ( randomG.nextG(5) > 15 ? -1.5f : 1.5f) ;
ball.vy = 1.5f ;
break;
}
}
protected void paint(Graphics g)
{
if(dieLine <= 0)
{
g.drawImage(loss, 0,0, Graphics.TOP | Graphics.LEFT) ;
return ;
}
if(getWin)
{
g.drawImage(win, 0,0, Graphics.TOP | Graphics.LEFT) ;
return ;
}
//清屏
g.setColor(255,255,255) ;
g.fillRect(0,0,getWidth(), getHeight()) ;
//按移动物体表依次绘制
for(int index = 0 ; index < listCount ; index ++)
{
paintList[index].paint(g) ;
}
//绘制砖块
for(int y = 0 ;y < 3 ;y++)
for(int x = 0 ;x < 6 ;x ++)
{
if(((Brick)Bricks_1[x][y]).pictureNum == 0)
Bricks_1[x][y].paint(g, brick, Bricks_1[x][y].strong > 0) ;
else if(((Brick)Bricks_1[x][y]).pictureNum == 1)
Bricks_1[x][y].paint(g, brick_1, Bricks_1[x][y].strong > 0) ;
}
//在信息输出栏输出游戏信息
g.setColor(255,0,0) ;
g.drawString("M: " + mark, 5, height + 1, Graphics.LEFT | Graphics.TOP) ;
g.drawString("Your lives: " + dieLine, width, height + 1, Graphics.RIGHT | Graphics.TOP) ;
if(brickCount <= 0)
{
g.drawString("Game Over", width, height + 1, Graphics.RIGHT | Graphics.TOP) ;
}
//划分出信息输出栏
g.drawLine(0,getHeight() - 15,getWidth(), getHeight() - 15) ;
}
public void commandAction(Command command, Displayable displayable)
{
if(command == exit)
{
hitBrick.exitMIDlet() ;
}
else if(command == start)
{
new Thread(new ImageMover()).start() ;
removeCommand(start) ;
}
}
//键按下事件函数,设置各按下键标志
protected void keyPressed(int _key)
{
switch(getGameAction(_key))
{
case Canvas.UP:
up = true ;
break ;
case Canvas.DOWN:
down = true ;
break ;
case Canvas.LEFT:
left = true ;
break ;
case Canvas.RIGHT:
right = true ;
break ;
case Canvas.FIRE:
fire = true ;
break ;
}
}
//键释放事件函数,设置各释放键标志
protected void keyReleased(int _key)
{
switch(getGameAction(_key))
{
case Canvas.UP:
up = false ;
break ;
case Canvas.DOWN:
down = false ;
break ;
case Canvas.LEFT:
left = false ;
break ;
case Canvas.RIGHT:
right = false ;
break ;
case Canvas.FIRE:
fire = false ;
break ;
}
}
//class MyCanvas
//成员函数 END///////////////////////////////////////////////////////////////
//嵌套类 //////////////////////////////////////////////////////////////////
//class MyCanvas
//撞球类，由MoveObject派生
class Ball extends MoveObject
{
//成员变量 //////////////////////////////////////////////////////////////////
//class Ball
//球的旋转标志
private float right_r, left_r ;
private float acc_r = 0.5f ;
//球的碰撞标志
private boolean collisioned ;
//class Ball
//成员变量 END////////////////////////////////////////////////////////////////
//成员函数 //////////////////////////////////////////////////////////////////
//class Ball
public Ball(String path, int x, int y, float vx, float vy, boolean special)
{
super(path, x, y, vx, vy, special) ;
}
//计算并移动球
public void move()
{
//根据参数计算速度值
getV() ;
//运动约束
moveLimit() ;
//产生位移
if((vx - (int)vx) > 0.5f)
x += ((int) vx + 1);
else
x += (int)vx ;
if((vy - (int)vy) > 0.5f)
y += ((int)vy + 1) ;
else
y += (int) vy ;
}
//计算速度值
private void getV()
{
}
//运动约束
private void moveLimit()
{
//边界约束
if(vx < 0 && x <= 0)
vx *= -1.0f ;
else if(x + cx >= width && vx > 0)
vx *= -1.0f ;
if(vy < 0 && y <= 0)
vy *= -1.0f ;
else if(vy > 0 && y + cy >= height)
{
vy *= -1.0f ;
dieLine -= 1 ;
}
//边界约束 END
//碰撞检测
Collisioned() ;
//速度约束
if(vx > 2.0f)
vx = 2.0f ;
if(vx < -2.0f)
vx = -2.0f ;
if(vy > 2.0f)
vy = 2.0f ;
if(vy < -2.0f)
vy = -2.0f ;
if((int)vx == 0)
{
vx = ((float)(randomG.nextG(7) - 64)) / 50.0f ;
}
//速度约束 END
}
private void Collisioned()
{
//先检测与击球板的碰撞
CollisionWithObject(plate) ;
//检测还存在的砖块
for(int y = 0 ;y < 3 ;y++)
for(int x = 0 ;x < 6 ;x ++)
{
if(Bricks_1[x][y].strong > 0)
{
if(CollisionWithObject(Bricks_1[x][y]))
{
//如果球与砖块碰撞
//该砖块强度减一
if((Bricks_1[x][y].strong -= 1) <= 0)
{
//如果强度变为0 ，减砖块计数，按砖块分值加玩家分数
brickCount -- ;
mark += ((Brick)Bricks_1[x][y]).count ;
if(brickCount <= 0)
{
layer ++ ;
if(layer < 3)
changeLevel(layer) ;
else
getWin = true ;
}
}
//如果球与击球板碰撞 END
}
}
}
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