unity中object 对象之间用c# delegate方式进行通信

unity 3D经常需要设计到不同object之间数据通信和事件信息触发。这里可以利用C#本身的事件和代理的方法来实现。

这里实现了在GUI上点击按钮，触发事件，移动object cube移动的例子。

Main Camera 挂载实现GUI的 Label.cs脚本

Cube挂载 Cube.cs脚本

Label.cs

using UnityEngine;
using System;
// 声明物体移动代理类型
public delegate void EventObjectMoveDelegate(Vector3 dirct);
public class Label : MonoBehaviour {
    private Rect windowRect;
    public event EventObjectMoveDelegate cubeMove;
    void Start()
    {
        windowRect = new Rect(20, 20, 200, 300);
    }
    // Update is called once per frame
    void Update()
    {
    }
    void OnGUI()
    {
        windowRect = GUI.Window(0, windowRect, Mywindowfunc, "windows");
    }
    void Mywindowfunc(int windowId)
    {
        if (GUI.Button(new Rect(10, 20, 100, 20), "moveUp"))
        {
            if (null != cubeMove)
            {
                cubeMove(Vector3.up);
            }
        }
        if (GUI.Button(new Rect(10, 50, 100, 20), "moveDown"))
        {
            if (null != cubeMove)
            {
                cubeMove(Vector3.down);
            }
        }
        if (GUI.Button(new Rect(10, 80, 100, 20), "moveLeft"))
        {
            if (null != cubeMove)
            {
                cubeMove(Vector3.left);
            }
        }
        if (GUI.Button(new Rect(10, 110, 100, 20), "moveRight"))
        {
            if (null != cubeMove)
            {
                cubeMove(Vector3.right);
            }
        }
        GUI.DragWindow(new Rect(0, 0, 10000, 1000));
    }
}

cube.cs

using UnityEngine;
using System.Collections;
using System;
public class cube : MonoBehaviour {
    // Use this for initialization
    void Start () {
        GameObject.Find("Main Camera").GetComponent<Label>().cubeMove += cubeMoveHandler;
    }
	// Update is called once per frame
	void Update () {
    }
    void cubeMoveHandler(Vector3 dirct)
    {
        transform.Translate(dirct);
    }
}

代码地址：

https://github.com/caimagic/Unity_Object_Commucation_With_Delegate.git