有没有办法在方法之间进行数学加法？

Question

我想知道方法之间是否有任何方法可以进行数学加法？代码如下.

从Main :(我需要计算,但我不能在方法之间进行计算)

Ball.setPositionY = Ball.setPositionY + Ball.setSpeedY;

来自一个班级:

public class Ball
    {
    public int speedX { get; set; }
    public int speedY { get; set; }
    public int positionX { get; set; }
    public int positionY { get; set; }

    public Ball(int speedX, int speedY, int positionX, int positionY)
    {
        this.speedX = speedX;
        this.speedY = speedY;
        this.positionX = positionX;
        this.positionY = positionY;
    }

    public void setSpeedX(int newSpeedX)
    {
        speedX = newSpeedX;
    }

    public void setSpeedY(int newSpeedY)
    {
        speedY = newSpeedY;
    }

    public void setPositionX(int newPositionX)
    {
        positionX = newPositionX;
    }

    public void setPositionY(int newPositionY)
    {
        positionY = newPositionY;
    }
}

Answer 1

这是你应该这样做的:

public class Ball
{
    public int SpeedX { get; set; }
    public int SpeedY { get; set; }
    public int PositionX { get; set; }
    public int PositionY { get; set; }

    public Ball(int speedX, int speedY, int positionX, int positionY)
    {
        this.SpeedX = speedX;
        this.SpeedY = speedY;
        this.PositionX = positionX;
        this.PositionY = positionY;
    }
}

public class Program
{
    public static void Main(string[] args)
    {
        Ball ball1 = new Ball(1,1,1,1);
        Ball ball2 = new Ball(2,2,2,2);
        Ball ball3 = new Ball(3,3,3,3);
        ball3.SpeedX = ball1.SpeedX + ball2.SpeedX;
    }
}