unity3d 觸發guitexture 滑鼠點擊事件

在unity3d建立了guitexture後，如何響應滑鼠點擊事件，

1、為maincamera添加guilayer(一般不用自己添加，在添加maincamera時會自動建立對應的guilayer)

2、在指令碼代碼中讀取對應的guilayer

3、檢測滑鼠或觸控螢幕單擊事件，使用HitTest檢測是否被點擊

4、根據名稱執行對應的函數

private GUILayer test;//定義 void Start()        {            test = Camera.main.GetComponent<GUILayer>();//擷取主攝像機對應的guilayer}void Update()        {            if (Input.touchCount > 0 ||                Input.GetMouseButtonDown(0))//滑鼠或觸摸事件            {                                if (test.HitTest(Input.mousePosition) != null)//點擊檢測到guitexture                    Debug.Log(test.HitTest(Input.mousePosition).name);//調試輸出guitexture的名稱            }        }

官方文檔：

GUILayer.HitTest
GUIElement HitTest(Vector3 screenPosition); Description

Get the GUI element at a specific screen position. Returns the GUIElement at a specific point on screen. If screenPosition is inside some GUIElement,that element is returned. Returns null if the position is not inside any GUI element.GUI elements that belong to Ignore Raycast layer will be ignored, as if they would not exist.

screenPosition is measured in screen coordinates, like the values returned by Input.mousePosition property.

Note: GUILayer.HitTest only finds old-school GUI components(made up of the classes GUIElement, GUITexture, GUIText, GUILayer),and will not work with the "new" one (referred to as "UnityGUI" andmade up of all the other GUIAnything classes, and the OnGUI() call).
So if you're using UnityGUI, HitTest won't find anything.

See Also: GUIElement.HitTest, Input.mousePosition.

using UnityEngine;using System.Collections;public class Example : MonoBehaviour {    private GUILayer test;    void Update() {        if (test.HitTest(Input.mousePosition) != null)            Debug.Log(test.HitTest(Input.mousePosition).name);            }    void Example() {        test = Camera.main.GetComponent<GUILayer>();    }}