设计模式学习-责任链模式

概念

使多个对象都有机会处理请求，从而避免了请求的发送者和接受者之间的耦合关系。将这些对象连成一条链，并沿着这条链传递该请求，直到有对象处理它为止.

代码编写

using UnityEngine;
using System.Collections;
public class ChainOfResponsbilityStucture :MonoBehaviour{void Start{Handler h1 = new ConcreteHandler1();Handler h2 = new ConcreteHandler2();Handler h3 = new ConcreteHandler3();//设置自己的 “领导”h1.SetSuccessor(h2);h2.SetSuccessor(h3);//测试int[] requests = { 2, 5, 14, 22, 18, 3, 27, 20 };foreach (int request in requests){h1.HandleRequest(request);}}//声明一个抽象类规范子类的行为abstract class Handler{protected Handler successour;public void SetSuccessour(Handler successour){this.successour= successour;}public void abstract RequestHandler(int request);}public class ConcreteHandler1:Handler{public override void RequestHandler(int request){if(request>=0 &&request < 10){Debug.Log($"交给我处理{this.GetType().Name}handled request {request}");}else if(successour != null){successor.RequestHandler(request);}}}public class ConcreteHandler2:Handler{public override void RequestHandler(int request){if(request>=10 &&request < 20){Debug.Log($"交给我处理{this.GetType().Name}handled request {request}");}else if(successour != null){successor.RequestHandler(request);}}}public class ConcreteHandler3:Handler{public override void RequestHandler(int request){if(request>=20 &&request < 50){Debug.Log($"交给我处理{this.GetType().Name}handled request {request}");}else if(successour != null){successor.RequestHandler(request);}}}
}