Java和Myro突破游戏程序提前关闭

Question

我正在使用Java和myro的经典突破游戏。程序加载球和桨，但随后立即关闭程序。

我想要的是Myrobricks的集合出现在窗口的顶部，然后球沿着随机方向移动并从桨弹起。当它击中砖块之一时，砖块消失，球弹起。

下面是代码：

import Myro.*; 
import java.util.*; 
import java.awt.*; 


public class BreakOut 
{ 
// declare the Scribbler object 
private Scribbler robot; 

private boolean intersects(MyroShape s1, MyroShape s2) 
{ 
    if(s1.getTop() >= s2.getBottom() || s1.getBottom() <= s2.getTop() || s1.getLeft() >= s2.getRight() || s1.getRight() <= s2.getLeft()) 
     return false; 
    else 
     return true; 
} 

public void main() 
{ //set a canvas that has 500 width, 500 height 
    final int WIDTH = 500; 
    final int HEIGHT = 500; 
    MyroCanvas myCanvas = new MyroCanvas("Breakout",WIDTH, HEIGHT); 

    int brickX = 0; 
    int brickY = 60; 

    //creating the collection of bricks 
    Collection<MyroRectangle> bricks = new ArrayList<MyroRectangle>(); 

    //create a rectangle(the paddle) 
    MyroRectangle paddle = new MyroRectangle(myCanvas, 205, 475, 90, 25); 
    //make it visible 
    paddle.makeFilled(); 
    paddle.setFillColor(Color.green); 
    paddle.visible(); 
    //create a ball 
    MyroCircle ball = new MyroCircle(myCanvas, 250, 465, 10); 
    ball.makeFilled(); 
    ball.setFillColor(Color.blue); 
    ball.visible(); 
    //choose a random Delta X(negative) & Y(not 0) 
    int deltaX = MyroUtils.randomInt(-4,-1); 
    int deltaY = MyroUtils.randomInt(-4, 4); 
    //if it chooses zero, do another one 

    myCanvas.setAutoRepaint(false); 

    for (int c = 0; c<9; c++) 
    { 
     brickX = 0; 
     for (int r = 0; c<4; c++) 
     { 
      MyroRectangle rectangles = new MyroRectangle(myCanvas, brickX, brickY, 50, 20); 

      int red = MyroUtils.randomInt (0, 255); 
      int green = MyroUtils.randomInt (0, 255); 
      int blue = MyroUtils.randomInt (0, 255); 

      rectangles.setFillColor(new Color (red, green, blue)); 
      rectangles.makeFilled(); 
      rectangles.visible(); 
      bricks.add(rectangles); 
      brickX = brickX + 50; 
     } 
     brickY = brickY + 20; 
    } 
    while (deltaY == 0) 
    { 
     deltaY = MyroUtils.randomInt(-4, 4); 
    } 
    boolean finished = false; 
    while (!finished) 
    { 
     ball.move(deltaX, deltaY); 
     MyroUtils.sleep(0.01); 
     int bricksCount = 40; 
     //implementing the paddle that is controlled by the A and D keys 
     if(MyroListener.isKeyPressed()) 
     { 
      if(MyroListener.whichKey() == 'q') 
      { 
       // quit 
       finished = true; 
      } 
      else if(MyroListener.whichKey() == 'a') 
      { 
       paddle.move(-4,0); 
       if(paddle.getLeft() < 0) 
       { 
        paddle.move(0, 0); 
       } 
      } 
      else if(MyroListener.whichKey() == 'd') 
      { 
       paddle.move(4,0); 
       if(paddle.getRight() > 500) 
       { 
        paddle.move(0, 0); 
       } 
      } 
     } 

     if (ball.getBottom() == 500) 
      finished = true; 

     if (ball.getBottom()==0) 
      ball.move(deltaX,-deltaY); 

     if (ball.getLeft()==0 || ball.getRight()==500) 
      ball.move(-deltaX, deltaY); 

     if(intersects(ball, paddle)) 
      ball.move(deltaX,-deltaY); 

     myCanvas.repaint(); 

     for (MyroRectangle rectangles : bricks) 
     { 
      if(rectangles.isVisible() && intersects(ball, rectangles)) 
      { 
       rectangles.invisible(); 
       deltaY = -deltaY; 
       bricksCount--; 
      } 
     } 
     if(bricksCount == 0) 
     { 
      finished = true; 
      MyroGUI.tellUser("Congratulation!"); 
     } 
     myCanvas.setVisible(false); 
    } 
} 
} 

任何想法，什么是错的代码？

Answer 1

我认为这个问题是：

myCanvas.setVisible(false);

该声明之前，你的画布是可见的，将其更改为：

myCanvas.setVisible(true);

看出区别。 即使不是解决方案，您也不应该在那里留下该语句，如果设置为true， JPanel.setVisible()方法用于将面板设置为可见，并且您将面板设置为在其显示自身后立即隐藏。如果那是你的意图，那不会关闭正在运行的程序。