关于unity中委托等的用法

不多说，直接上代码，不足之处，多多指教

 1 using System;
 2 using System.Collections;
 3 using System.Collections.Generic;
 4 using UnityEngine;
 5 using UnityEngine.Events;
 6 
 7 public class ActionAndUnityEvent : MonoBehaviour {
 8 
 9     public delegate int m_delegate(int a,int b, int c);
10     m_delegate m_mydelegate;
11     event m_delegate m_event;
12        
13     public Action<int, int> m_action;
14 
15     public UnityAction<int, int> m_unityAction;
16 
17     public UnityEvent m_unityEvent = new UnityEvent();
18     void Start()
19     {
20 
21 
22         m_unityEvent.AddListener(() => ListenerAdd(10,10));
23         m_unityEvent.Invoke();
24 
25 
26 
27         m_mydelegate += Add;
28         if (m_mydelegate != null)
29         {
30             m_mydelegate(1, 2, 3);
31         }
32 
33 
34 
35         m_event += Add;
36         if (m_event!=null)
37         {
38             m_event(1,3,5);
39         }
40 
41 
42 
43         m_unityAction += Add;
44         if (m_unityAction!=null)
45         {
46             m_unityAction(3, 5);
47         }
48 
49 
50 
51         m_action += Add;
52         if (m_action!=null)
53         {
54             m_action(2, 3);
55         }
56     }
57 
58 
59     public  void Add(int a, int b)
60     {
61         Debug.Log(a + b);
62     }
63 
64 
65 
66     public int Add(int a, int b, int c)
67     {
68         Debug.Log(a + b + c);
69         return a + b + c;
70     }
71 
72 
73 
74 
75     public  void  ListenerAdd(int a,int b)
76     {
77         Debug.Log(a + b);
78     }
79 }