GoF中定义：
定义一个接口来封装一群对象的互动行为
中介者通过移除对象之间的引用
以减少他们之间的耦合度
并且能改变它们之间的互动独立性
游戏做的越大，系统划分的也就越多
如事件系统，关卡系统，信息系统，界面系统等。
系统切分越细，就意味着系统之间的沟通越复杂
单一系统引入太多其他系统的功能，不利于单一系统的转换和维护
单一系统被过多的系统所依赖，不利于接口的更改，容易牵一发而动全身
由于需要提供给其他系统操作，系统的接口可能会过于庞大，不容易维护
using UnityEngine;
public abstract class Mediator {
public abstract void SendMessage(Colleague theColleague,string Message);
}
public abstract class Colleague {
protected Mediator m_Mediator = null;
public Colleague(Mediator theMediator) {
m_Mediator = theMediator;
}
public abstract void Request(string Message);
}
public class ConcreateColleague1 : Colleague {
public ConcreateColleague1(Mediator theMediator) : base(theMediator) { }
public void Action() {
m_Mediator.SendMessage(this,"Colleage1发出通知");
}
public override void Request(string Message)
{
Debug.Log("ConcreateColleague1.Request:" + Message);
}
}
public class ConcreateColleague2 : Colleague
{
public ConcreateColleague2(Mediator theMediator) : base(theMediator) { }
public void Action()
{
m_Mediator.SendMessage(this,"Colleage2发出通知");
}
public override void Request(string Message)
{
Debug.Log("ConcreateColleague2.Request:" + Message);
}
}
public class ConcreteMediator : Mediator {
ConcreateColleague1 m_Colleague1 = null;
ConcreateColleague2 m_Colleague2 = null;
public void SetColleague1(ConcreateColleague1 theColleague) {
m_Colleague1 = theColleague;
}
public void SetColleague2(ConcreateColleague2 theColleague) {
m_Colleague2 = theColleague;
}
public override void SendMessage(Colleague theColleague, string Message)
{
if (m_Colleague1 == theColleague)
m_Colleague2.Request(Message);
if (m_Colleague2 == theColleague)
m_Colleague1.Request(Message);
}
}先产生中介者ConcreteMediator的对象之后
接着产生两个Colleague对象
并将其设置给中介者
分别调用两个Colleague对象的Action方法
查看信息是否通过Mediator传递给Colleague
文章整理自书籍《设计模式与游戏完美开发》 菜升达 著