如何通过单击鼠标右键停止处理绘制循环？

【问题标题】：How can I stop the Processing Draw loop by click mouse right button?如何通过单击鼠标右键停止处理绘制循环？
【发布时间】：2021-10-16 17:27:00
【问题描述】：

我想设置一个游戏。

当我按下“s”键，然后开始游戏。在我按下鼠标右键后，它将重置并停止游戏。现在的问题是当我单击鼠标右键时，变量“game”应该设置为false，但是当我释放鼠标按钮时它仍然是正确的。

有人可以帮助我吗？谢谢。

boolean game = false;

void setup() {
  size(640, 480);
}

void draw() {
  background(200, 200, 200);

  if (key=='s') game=true;
  println("1::" + game);

  if (game==true) {
    // gaming...

    if (mousePressed && mouseButton == RIGHT) {
      // I want to reset the game...
      game=false;

      println("2 after pressed right mouse button::" + game);
    }

    println("3 why still run the code here after I press mouse right button? ");
  }
}
void mouseDragged()
{
  if (game==true) {
    // the dragging game...
    print("3:: dragging" + game);
  }
}

【问题讨论】：

标签： processing

【解决方案1】：

使用mousePressed() 函数代替mousePressed 变量：

mousePressed() 函数在每次按下鼠标按钮后调用一次

void draw() {
    background(200, 200, 200);

    // DELETE
    //if (key=='s') game=true;
    //println("1::" + game);

    if (game==true) {
        // gaming...

        // DELETE
        //if (mousePressed && mouseButton == RIGHT) {
        //    game=false;
        //    println("2 after pressed right mouse button::" + game);
        //}

        println("3 why still run the code here after I press mouse right button? ");
    }
}

void keyPressed() {
    if (!game and key == 's') {
        game = true;
        println("1::" + game);
    }
}

void mousePressed() {
    if (game && mouseButton == RIGHT) {
        game = false;
        println("2 after pressed right mouse button::" + game);
    }
}

【讨论】：