C# 当picturebox与其他对象碰撞时，如何阻止它进一步移动？

我制作了一个类似于C语言的游戏，其中角色是一个图片框，并使用箭头键移动它。我希望他在遇到固体物体时停下来。我使用不可见的方形面板来定义禁区，但当他接触面板时，我使用的代码使他朝相反的方向移动，我按下了另一个键

 if (e.KeyCode == Keys.Right)
        {
            j_figure = 2;
            x += velocity;

            if ((playerBox.Bounds.IntersectsWith(panel1.Bounds) || playerBox.Bounds.IntersectsWith(panel2.Bounds)))
            x -= velocity - 10;
            playerBox.Location = new Point(x, y);
        }
        else if (e.KeyCode == Keys.Left)
        {
            j_figure = 1;
            x -= velocity;

            if ((playerBox.Bounds.IntersectsWith(panel1.Bounds) || playerBox.Bounds.IntersectsWith(panel2.Bounds)))
                x += velocity + 10;
            playerBox.Location = new Point(x, y);
        }
        else if (e.KeyCode == Keys.Up)
        {
            j_figure = 3;
            y -= velocity;

            if ((playerBox.Bounds.IntersectsWith(panel1.Bounds) || playerBox.Bounds.IntersectsWith(panel2.Bounds)))
                y += velocity + 10;
            playerBox.Location = new Point(x, y);
        }
        else if (e.KeyCode == Keys.Down)
        {
            j_figure = 0;
            y += velocity;

            if ((playerBox.Bounds.IntersectsWith(panel1.Bounds) || playerBox.Bounds.IntersectsWith(panel2.Bounds)))
                y -= velocity - 10;
            playerBox.Location = new Point(x, y);
        }

---

为了使对象完全停止在禁止区域，必须根据区域边界及其自身大小设置其位置。对于左键和右键，这将是：

if (e.KeyCode == Keys.Right) {
    j_figure = 2;
    x += velocity;
    if (playerBox.Bounds.IntersectsWith(panel1.Bounds)) {
        x = panel1.Left - playerBox.Width - 1;
    } else if (playerBox.Bounds.IntersectsWith(panel2.Bounds)) {
        x = panel2.Left - playerBox.Width - 1;
    }
} else if (e.KeyCode == Keys.Left) {
    j_figure = 1;
    x -= velocity;
    if (playerBox.Bounds.IntersectsWith(panel1.Bounds)) {
        x = panel1.Right + 1;
    } else if (playerBox.Bounds.IntersectsWith(panel2.Bounds)) {
        x = panel2.Right + 1;
    }
} ...
playerBox.Location = new Point(x, y);

该逻辑必须相应地应用于垂直方向

---

使不可见区域可见以进行测试。

我终于做到了。通过添加 playerBox.Location=新点x，y； 每一个动作里面都有按键动作。更具体地说：

    if (e.KeyCode == Keys.Right)
        {
            j_figure = 2;

            x += velocity;
            playerBox.Location = new Point(x, y);

            if (playerBox.Bounds.IntersectsWith(panel1.Bounds))
            {
                x = panel1.Left - playerBox.Width;
            }
            else if (playerBox.Bounds.IntersectsWith(panel2.Bounds))
            {
                x = panel2.Left - playerBox.Width;
            }
         }
...

// code for other directions
...
// again but this time outside the KeyCode if statements
playerBox.Location = new Point(x, y);
}

---

听起来您需要理解所编写的代码并学习使用调试器。。如果效果不是你所期望的，也许你需要改变你的物体移动的方向，听起来像是XY的问题，但这并不完全有效。当角色发生这种情况时，例如：当他向左移动时，恰好停在对象上，然后我按下（让我们说）键向上移动，他会重新出现在对象的底部。相反的情况是，当他停在面板的右侧，我按下向下键，他会重新出现在面板的顶部。可能有一个像素重叠，所以在右侧加一个像素，在左侧减一个像素。