Unity之一天一个技术点（十九）--初学委托

using UnityEngine;
using System.Collections;

//三个军衔级别的命令类型//
public enum TypeOfCommands
{
General,
Captain,
Soldier
}

public class EventManager : MonoBehaviour
{

//定义一个通用代理，根据传递类型，发送消息
public delegate void CommonUse(TypeOfCommands cmd);
//定义一个事件发送三个军衔的命定
public static event CommonUse whenStep_CommonUse;

//通用指令传递事件类型//
public static void sendMessage_Common(TypeOfCommands toc)
{
whenStep_CommonUse(toc);
}
}

using UnityEngine;
using System.Collections;

public class MainLogic : MonoBehaviour
{

public GUIText myGuiText;//用于显示消息的ui文字

void Start()
{
EventManager.whenStep_CommonUse += whenStep;
}

//根据命令类型，执行
void whenStep(TypeOfCommands toc)
{
switch (toc)
{
case TypeOfCommands.General:
myGuiText.text = "i'm General,the captain should hear from me";
break;
case TypeOfCommands.Captain:
myGuiText.text = "i'm Captain,every soldier need to obey to me";
break;
case TypeOfCommands.Soldier:
myGuiText.text = "i'm soldier,i need to receive commands";
break;

}
}

void OnGUI()
{
if(GUI.Button(new Rect(0,0,100,30),"General"))
{
EventManager.sendMessage_Common(TypeOfCommands.General);
}
if(GUI.Button(new Rect(0,50,100,30),"Captain"))
{
EventManager.sendMessage_Common(TypeOfCommands.Captain);
}
if(GUI.Button(new Rect(0,100,100,30),"Soldier"))
{
EventManager.sendMessage_Common(TypeOfCommands.Soldier);
}

}

}