Question

好吧所以我试图在一个网格上找到一个鼠标被点击的网格上的坐标（为什么我进入了int）这就像给我一样的鼠标的当前位置，但是，我希望之后的位置点击，徘徊时没有任何事情发生。

我需要做什么？

while (gameOver==false){
    mouseX= (int) StdDraw.mouseX();
    mouseY=(int) StdDraw.mouseY();
    game.update(mouseX, mouseY);
}

现在我有

    public void mouseReleased(MouseEvent e){
       int mouseX = e.getX();
       int mouseY = e.getY();
               synchronized (mouseLock) {
    mousePressed = false;
}
}
public void run(){
    print();
    boolean gameOver=false;
    int mouseX,mouseY;
    StdDraw.setCanvasSize(500, 500);
    StdDraw.setXscale(0, game.gettheWidth());
    StdDraw.setYscale(0, game.gettheHeight());
    game.update(-1,-1);
    while (gameOver==false){

            mouseReleased(????)
            game.update(mouseX, mouseY);
        }       

}

仍然无法正常工作

这一切都没有意义，

有人能给我一个例子，它会得到x和y坐标然后打印出来吗？我希望mouseX和mouseY成为鼠标点击的坐标。我已经在线查看了我不了解任何其他问题，我认为它与mouseevent有关吗？

Answer 1

StdDraw实现了MouseListener。重载mouseReleased方法以设置mouseX和mouseY变量。

要重载，您需要按照运行方式重写方法：

int mouseX = 0;
int mouseY = 0;
public static void main(String[] args) {
    //do stuff
    //...
    while (gameOver == false) {
        //because mouseX and mouseY only change when the mouse button is released
        //they will remain the same until the user clicks and releases the mouse button
        game.update(mouseX, mouseY);
    }
}

//mouseReleased happens whenever the user lets go of the mouse button
@Override
public void mouseReleased(MouseEvent e) {
    //when the user lets go of the button, send the mouse coordinates to the variables.
    mouseX = e.getX();
    mouseY = e.getY();
    synchronized (mouseLock) {
        mousePressed = false;
    }
}

因此，例如，mouseX和mouseY均为0.我在5, 6单击鼠标，拖动它，然后在120, 50处释放鼠标。调用mouseReleased并将mouseX更改为120，将mouseY更改为50.同时，game.update（0,0）已经发生。现在变为game.update（120,50），并且将一直保持这种状态，直到我再次释放鼠标按钮。

要打印鼠标坐标：

@Override
public void mouseReleased(MouseEvent e) {
    //when the user lets go of the button, send the mouse coordinates to the variables.
    System.out.println("mouse x coord = " + e.getX());
    System.out.println("mouse y coord = " + e.getY());
    synchronized (mouseLock) {
        mousePressed = false;
    }
}

获取鼠标点击网格的坐标简易java StdDraw

1 个答案: