当图片框与另一个对象碰撞时，如何阻止它进一步移动?

本文关键字：何阻止 进一步 移动 碰撞 一个对象 | 更新日期: 2023-09-27 18:16:04

我用c#制作了一个类似游戏的东西，其中角色是一个图片框，它正在使用箭头键移动。我希望他在遇到固体物体时停下来(我使用不可见的正方形面板来定义禁止区域)，但是我使用的代码使他在与面板接触时朝相反的方向移动，而我按了不同的键。

 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);
        }

当图片框与另一个对象碰撞时，如何阻止它进一步移动?

我终于做到了。这个问题通过添加
解决了。playerBox.Location = new Point(x, y);里面的每一个动作键动作。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);
}

为了使停在禁止区域的对象，您必须根据区域边界和其自身的大小设置其位置。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);

此逻辑必须应用于相应的垂直方向。

使不可见的区域在测试中可见

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