获取鼠标单击网格Easy Java StdDraw的坐标

Question

okay so I am trying to get the coordinates on a grid of which square a mouse was clicked on (why i casted into int) and this is giving me like the current position of the mouse,however, I want the position after a click and for nothing to happen while it hovers.

what do i need to do?

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

now i have

    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);
        }       

}

still not working

None of this is making sense still,

Could someone give me an example of it getting x and y coordinates then printing them? I want the mouseX and mouseY to the be coordinates of the mouseclick. I've looked online I don't understand any of the other questions, I assume it has something to do with mouseevent?

Answer 1

StdDraw implements a MouseListener. Overload the mouseReleased method to set your mouseX and mouseY variables.

To overload, your rewrite the method the way you need it to run:

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;
    }
}

So for example, mouseX and mouseY are both 0. I click the mouse at 5, 6 , drag it, and release the mouse at 120, 50 . mouseReleased is called and changes mouseX to 120, and mouseY to 50. Meanwhile, game.update(0,0) has been happening. That now changes into game.update(120, 50), and will remain that way until I release the mouse button again.

To print the mouse coordinates:

@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;
    }
}