c# - C#中对象的碰撞检测

Question

好的，所以我的游戏开始几乎可以工作了现在这一切都有效，我正试图让碰撞工作。问题是它不起作用。

如果有人知道它为什么不起作用以及如何开始工作，我已经注释掉了不起作用的碰撞编码，请告诉我如何。

当我取消注释时出错:

The best overloaded method match for 'System.Windows.PresentationFrameworkCollection.Add(System.Windows.UIElement)' has some invalid arguments

我的代码(主页)

命名空间游戏
{
公共(public)部分类 MainPage : UserControl
{
pig 我的 pig ；
列出我的苹果；

    private int appleTimer = 0;
    //int appleCount = 0;

    public MainPage()
    {
        InitializeComponent();
        myPig = new Pig();
        myapples = new List<Apple>();

        Image myImg = new Image();
        myImg.Source = new BitmapImage(new Uri("pig3.png", UriKind.Relative));
        myImg.Width = 80;
        myImg.Height = 60;
        myPig.Content = myImg;
        LayoutRoot.Children.Add(myPig);
        Canvas.SetLeft(myPig,100);
        Canvas.SetTop(myPig, 50);
        //LayoutRoot.Children.Add(myapples);
        CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);
    }

    public void AddApple(Apple a)
    {
        myapples.Add(a);
        LayoutRoot.Children.Add(a);
    }

    public void RemoveApple(Apple a)
    {
        myapples.Remove(a);
        LayoutRoot.Children.Remove(a);
    }

    public void CompositionTarget_Rendering(object sender, EventArgs e)
    {
        appleTimer += 1;
        if (appleTimer > 60)
        {
            appleTimer = 0;
            AddApple(new Apple());
        }

        for (int indx = 0; indx < myapples.Count; indx++)
        {
            myapples[indx].Update(LayoutRoot);
        }

      // if (DetectCollision(myapples, myPig))
       {                  
          // LayoutRoot.Children.Remove(myapples);
        }
    }


    private void UserControl_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Up)
            this.myPig.Move(Direction.Up);
        if (e.Key == Key.Down)
            this.myPig.Move(Direction.Down);
        if (e.Key == Key.Left)
            this.myPig.Move(Direction.Left);
        if (e.Key == Key.Right)
            this.myPig.Move(Direction.Right);
    }

    public bool DetectCollision(ContentControl ctrl1, ContentControl ctrl2)
    {

        Rect ctrl1Rect = new Rect(
                new Point(Convert.ToDouble(ctrl1.GetValue(Canvas.LeftProperty)),
                                     Convert.ToDouble(ctrl1.GetValue(Canvas.TopProperty))),
                             new Point((Convert.ToDouble(ctrl1.GetValue(Canvas.LeftProperty)) + ctrl1.ActualWidth),
                                     (Convert.ToDouble(ctrl1.GetValue(Canvas.TopProperty)) + ctrl1.ActualHeight))
                     );

        Rect ctrl2Rect = new Rect(
    new Point(Convert.ToDouble(ctrl2.GetValue(Canvas.LeftProperty)),
                                    Convert.ToDouble(ctrl2.GetValue(Canvas.TopProperty))),
                            new Point((Convert.ToDouble(ctrl2.GetValue(Canvas.LeftProperty)) + ctrl2.ActualWidth),
                                    (Convert.ToDouble(ctrl2.GetValue(Canvas.TopProperty)) + ctrl2.ActualHeight))
                    );

        ctrl1Rect.Intersect(ctrl2Rect);
        return !(ctrl1Rect == Rect.Empty);
    }
}

}

Answer 1

你有一个元素列表，而不是一个元素。遍历列表并添加每个元素:

foreach (Apple a in myapples) {
  LayoutRoot.Children.Add(a);
}