Question

我不能通过移动手指来触摸统一中的某些物体。我使用EventSystem.current.currentSelectedGameObject.name来检查选择了哪个对象。但是当我移动手指时，我只能访问第一个对象。在完成第一个物体的触摸后，第二个物体将无法理解我的触摸。我应该移开手指并再次触摸第二个物体。

Answer 1

在这里，您经常测试Touch命中。我建议你另一种方法。相反，您可以让对象在选择它们时告诉您。 - 触发事件的每个对象上的OnMouse事件处理程序 - 一个侦听此事件的类，并将事件发送的游戏对象存储在集合中

例如：

对象的脚本：

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;

public class HoverDetection : MonoBehaviour
{
    public delegate void SelectEvent(GameObject go);
    public SelectEvent IsSelected;

    public delegate void DestroyEvent(GameObject go);
    public DestroyEvent Destroying;

    void OnMouseEnter ()
    {
        var es = EventSystem.current;
        if(es.currentSelectedGameObject != gameObject)
        {
            es.SetSelectedGameObject(gameObject);
            OnSelect();
        }
    }

    void OnSelect()
    {   
        Debug.Log("OnHover");
        IsSelected(gameObject);
    }

    public void OnDestroy()
    {
        Destroying(gameObject);
    }
}

处理对象并将您的选择存储到集合中的脚本

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

public class SelectedCollection : MonoBehaviour
{
    public GameObject[] AllMyObjects; //The array of all your selectable objects. Up to you to populate it.
    public List<GameObject> Collection{
        get {return _collection;}
    }

    private List<GameObject> _collection = new List<GameObject>();

    void Start()
    {
        AllMyObjects = GameObject.FindGameObjectsWithTag("SelectableObject"); // Just an exemple to populate your base array

        foreach(GameObject go in AllMyObjects)
        {
            go.GetComponent<HoverDetection>().IsSelected += store; //Fired by SetSelectedGameObject(GameObject) see : http://docs.unity3d.com/500/Documentation/ScriptReference/EventSystems.EventSystem.SetSelectedGameObject.html
            go.GetComponent<HoverDetection>().Destroying += clean; //Always unlink your delegats when an object is destroyed. Otherwise you risk some memory leaks. 
        }
    }

    private void store(GameObject go)
    {
        _collection.Add(go);
        Debug.Log(_collection.Count);
    }

    private void clean(GameObject go)
    {
        go.GetComponent<HoverDetection>().IsSelected -= store;
        go.GetComponent<HoverDetection>().IsSelected -= clean;
    }
}

您需要做的就是根据Touch事件用适当的代码替换OnMouseEnter。

如何通过移动手指触摸两个物体？

1 个答案: