检测Unity中重叠的2D对象上的输入冲突

Question

我正在开发一款应用程序，它有许多可以漂浮但不会相互碰撞的球。这意味着它们重叠很多。我已经得到了它，如果你点击/触摸球，它们就会被摧毁。但是，如果一个球落在另一个球的后面，那么这个球不会被破坏，直到前面的球被清除。

上图显示了我正在寻找的内容，如果用户点击/触摸位置x，则销毁所有对象，而不仅仅是最前面的对象。任何帮助非常感谢。

这是我的输入脚本：

compile

在球上我只有一个：

 using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class TouchInput : MonoBehaviour {

    public LayerMask touchInputMask;
    private List<GameObject> touchList = new List<GameObject> ();
    private GameObject[] touchesOld;
    private RaycastHit2D hit;

    void Update () {


#if UNITY_EDITOR

        if (Input.GetMouseButton(0) || Input.GetMouseButtonDown(0) || Input.GetMouseButtonUp(0)) {

            touchesOld = new GameObject[touchList.Count];
            touchList.CopyTo (touchesOld);
            touchList.Clear ();


            hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero, touchInputMask);
            //Ray ray = Camera.main.ScreenPointToRay (Input.mousePosition);

            if (hit) {

                GameObject recipient = hit.transform.gameObject;
                touchList.Add (recipient);

                if (Input.GetMouseButtonDown(0)) {
                    recipient.SendMessage ("OnTouchDown",hit.point,SendMessageOptions.DontRequireReceiver);

                }
                if (Input.GetMouseButtonUp(0)) {
                    recipient.SendMessage ("OnTouchUp",hit.point,SendMessageOptions.DontRequireReceiver);

                }
                if (Input.GetMouseButton(0)) {
                    recipient.SendMessage ("OnTouchStay",hit.point,SendMessageOptions.DontRequireReceiver);

                }

            }

            foreach (GameObject g in touchesOld) {
                if (!touchList.Contains (g)) {
                    if(g!=null) {
                        g.SendMessage ("OnTouchExit", hit.point, SendMessageOptions.DontRequireReceiver);
                    }

                }
            }

        }

#endif

        if (Input.touchCount > 0) {

            touchesOld = new GameObject[touchList.Count];
            touchList.CopyTo (touchesOld);
            touchList.Clear ();

            foreach (Touch touch in Input.touches) {

                hit = Physics2D.Raycast(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero, touchInputMask);

                if (hit) {

                    GameObject recipient = hit.transform.gameObject;
                    touchList.Add (recipient);

                    if (touch.phase == TouchPhase.Began) {
                        recipient.SendMessage ("OnTouchDown",hit.point,SendMessageOptions.DontRequireReceiver);

                    }
                    if (touch.phase == TouchPhase.Ended) {
                        recipient.SendMessage ("OnTouchUp",hit.point,SendMessageOptions.DontRequireReceiver);

                    }
                    if (touch.phase == TouchPhase.Stationary) {
                        recipient.SendMessage ("OnTouchStay",hit.point,SendMessageOptions.DontRequireReceiver);

                    }
                    if (touch.phase == TouchPhase.Canceled) {
                        recipient.SendMessage ("OnTouchExit",hit.point,SendMessageOptions.DontRequireReceiver);

                    }

                }

            }

            foreach (GameObject g in touchesOld) {
                if (!touchList.Contains (g)) {
                    if (g != null) {
                        g.SendMessage ("OnTouchExit", hit.point, SendMessageOptions.DontRequireReceiver);
                    }

                }
            }

        }

    }
}

Answer 1

@Savlon提供的答案，非常感谢：）

private RaycastHit2D[] hits;

...

hits = Physics2D.RaycastAll(Camera.main.ScreenToWorldPoint(Input.mousePosition), Vector2.zero, touchInputMask);

        foreach(RaycastHit2D hit in hits) {

            GameObject recipient = hit.transform.gameObject;
            touchList.Add (recipient);

            if (Input.GetMouseButtonDown(0)) {
                recipient.SendMessage ("OnTouchDown",hit.point,SendMessageOptions.DontRequireReceiver);

            }
            if (Input.GetMouseButtonUp(0)) {
                recipient.SendMessage ("OnTouchUp",hit.point,SendMessageOptions.DontRequireReceiver);

            }
            if (Input.GetMouseButton(0)) {
                recipient.SendMessage ("OnTouch",hit.point,SendMessageOptions.DontRequireReceiver);

            }


        }