Question

我和我的同学正在尝试编写代码，以同时移动所有对象。我们有一个Picture类，内部有变量：car, wheels, cabin, driver。

当我们使用for循环时，它们一个接一个地移动。我们需要的是使它们同时移动。您能否建议一个可以同时适用于所有人的循环，因为我们现在得到的是执行第一行，而剩下的第一行。完成后，移至下一行。

import java.awt.*;
import java.applet.*;
import java.awt.event.*;

public class Picture
{

    private Square wall;
    private Square window;
    private Triangle roof;
    private Circle sun;
    private boolean drawn;
    private Circle wheels;
    private rectangle body;
    private Square cabin;
    private Person driver;
    private Circle wheels2;

    /**
     * Constructor for objects of class Picture
     */

    public Picture()
    {
        wall = new Square();
        window = new Square();
        roof = new Triangle();  
        sun = new Circle();
        drawn = false;
        wheels = new Circle();
        wheels2 = new Circle();
        driver = new Person();
        cabin = new Square();
        body = new rectangle();

    }

    /**
     * Draw this picture.
     */
    public void draw()
    {
            driver.changeSize(80, 60);
            driver.moveHorizontal(30);
            driver.moveVertical(30);
            driver.makeVisible();

            body.changeSize(220, 60);
            body.moveHorizontal(10);
            body.moveVertical(20);
            body.makeVisible();

            wheels2.changeSize(60);
            wheels2.moveHorizontal(130);
            wheels2.moveVertical(10);
            wheels2.makeVisible();

            wheels.changeSize(60);
            wheels.moveHorizontal(10);
            wheels.moveVertical(10);
            wheels.makeVisible();

            cabin.changeSize(60);
            cabin.moveHorizontal(10);
            cabin.moveVertical(20);
            cabin.makeVisible();

            while(true)
               {

                 driver.slowMoveHorizontal(100);
                 body.slowMoveHorizontal(100);
                  wheels.slowMoveHorizontal(100);
                  wheels2.slowMoveHorizontal(100);
                  cabin.slowMoveHorizontal(100);

                driver.slowMoveHorizontal(-100);

                body.slowMoveHorizontal(-100);

                wheels.slowMoveHorizontal(-100);

                wheels2.slowMoveHorizontal(-100);

                cabin.slowMoveHorizontal(-100);

            }
        }
    }


    /**
     * Change this picture to black/white display
     */
    public void setBlackAndWhite()
    {
        wall.changeColor("black");
        window.changeColor("white");
        roof.changeColor("black");
        sun.changeColor("black");
    }*/


    /**
     * Change this picture to use color display
     */
    public void setColor()
    {
        wall.changeColor("red");
        window.changeColor("black");
        roof.changeColor("green");
        sun.changeColor("yellow");
    }

}

Answer 1

似乎您需要一些并行性。您可以在不同的线程中移动每个组件。但这也不能确保完全并行，但是至少比顺序操作要好。

如何在Java中移动多个对象

1 个答案: