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我在做一個突破遊戲。我有兩個班級:一個磚塊類,它顯示一系列磚塊圖像和一個可在窗口周圍移動球圖像的球類。我試圖弄清楚當球擊中某塊磚時如何使磚消失。任何幫助將不勝感激。java中的碰撞檢測
磚類:
public class Brick {
private URL url;
private Image brick;
Image [][] bricks = new Image[50][3];
public Brick (Breakout bR){
url = bR.getDocumentBase();
brick = bR.getImage(bR.getDocumentBase(),"brick.png");
for(int i =0; i < bricks.length; i++)
for(int j = 0; j < bricks[0].length; j++)
bricks[i][j] = brick;
}
public void update(Breakout bR){}
public void paint(Graphics g, Breakout bR){
brick = bR.getImage(bR.getDocumentBase(),"brick.png");
int imageWidth = imageWidth = bricks[0][0].getWidth(bR);
int imageHeight = imageHeight = bricks[0][0].getHeight(bR);
for (int i = 0; i < bricks.length; i++)
for (int j =0; j < bricks[0].length; j++)
g.drawImage(brick, i * imageWidth + 5, j* imageHeight + 5, bR);
}
}
Ball類:
public class Ball {
private int x=355 ;
private int y=200;
private int speed = 8;
private int xVel = -speed;
private int yVel = speed;
private boolean gameOver = false;
private Image ball;
public Ball (Breakout bR){
ball = bR.getImage(bR.getDocumentBase(),"ball.png");
}
public void update(Breakout bR, Paddle p){
x += xVel;
y += yVel;
if (x < 0){
xVel = speed;
}
else if (x > bR.getWidth()){
xVel = -speed;
}
if(y > bR.getHeight()){
gameOver = true;
}
else if (y < 0){
yVel = speed;
}
collision(p);
}
public void collision(Paddle p){
int pX = p.getX();
int pY = p.getY();
int pHeight = p.getImageHeight();
int pWidth = p.getImageWidth();
if (pX<=x && pX+pWidth>=x && pY-pHeight<=y && pY+pHeight>=y){
yVel = -speed;
}
}
public int getX(){
return x;
}
public int getY(){
return y;
}
public void paint (Graphics g, Breakout bR){
g.drawImage(ball,x,y,bR);
if (gameOver){
g.setColor(Color.WHITE);
g.drawString("Game Over", 100,300);
}
}
}
感謝您的幫助:)
1)爲什麼要編寫一個小程序?如果是由於老師指定它,請將它們轉介給[爲什麼CS教師應該停止**教Java applets](http://programmers.blogoverflow.com/2013/05/why-cs-teachers-should -stop教學-java的小應用程序/)。 2)爲了更快地獲得更好的幫助,請發佈[MCVE]或[簡短,獨立,正確的示例](http://www.sscce.org/)。 3)另請參見[使用複雜形狀的碰撞檢測](http://stackoverflow.com/a/14575043/418556)瞭解一個工作示例(使用Java-2D形狀)。 –
順便說一句 - 這是使用AWT或Swing組件嗎? –
[複雜形狀的碰撞檢測]可能的重複(http://stackoverflow.com/questions/14574045/collision-detection-with-complex-shapes) –