Question

我正在尝试阻止射线广播通过我的按钮2d UI。当前，当按钮后面没有游戏对象时，按钮可以正常工作，但是当按钮后面有游戏对象时，它将触发对象而不是我的按钮。我尝试使用以下代码尝试检测UI，但它似乎无法正常工作，并不断返回True：

EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId));

任何帮助将不胜感激。

编辑：

我当前的代码：

 void Update () {
    if (!EventSystem.current.IsPointerOverGameObject(Input.GetTouch(0).fingerId)){
        RegisterModelTouch();
    }

}

public void RegisterModelTouch() {
    // We assume that there was only one touch and take the first 
    // element in the array.

    try {
        Touch touch = Input.touches[0];
        RaycastHit hit;
        Ray ray = Camera.main.ScreenPointToRay(touch.position);


        if (Physics.Raycast(ray, out hit)) {
           if (hit.collider.CompareTag("Mytag")) {
              //Do model stuff here
            }

        }
    }
    catch (Exception e) {
        return;
    }
}

Answer 1

对我来说，解决方案被深深地埋在了论坛讨论中：

/// <summary>
/// Cast a ray to test if Input.mousePosition is over any UI object in EventSystem.current. This is a replacement
/// for IsPointerOverGameObject() which does not work on Android in 4.6.0f3
/// </summary>
private bool IsPointerOverUIObject() {
    // Referencing this code for GraphicRaycaster https://gist.github.com/stramit/ead7ca1f432f3c0f181f
    // the ray cast appears to require only eventData.position.
    PointerEventData eventDataCurrentPosition = new PointerEventData(EventSystem.current);
    eventDataCurrentPosition.position = new Vector2(Input.mousePosition.x, Input.mousePosition.y);
 
    List<RaycastResult> results = new List<RaycastResult>();
    EventSystem.current.RaycastAll(eventDataCurrentPosition, results);
    return results.Count > 0;
}

从这里：https://forum.unity.com/threads/ispointerovereventsystemobject-always-returns-false-on-mobile.265372/

通过UI进行的Unity射线广播

1 个答案: