【Unity API】UnityEvent的使用方法

 官方API

1.无参数的UnityEvent

Unity - Scripting API: UnityEvent

using UnityEngine;
using UnityEngine.Events;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    UnityEvent m_MyEvent;

    void Start()
    {
        if (m_MyEvent == null)
            m_MyEvent = new UnityEvent();

        m_MyEvent.AddListener(Ping);
    }

    void Update()
    {
        if (Input.anyKeyDown && m_MyEvent != null)
        {
            m_MyEvent.Invoke();
        }
    }

    void Ping()
    {
        Debug.Log("Ping");
    }
}

2.带有一个参数的UnityEvent

Unity - Scripting API: UnityEvent<T0>

using UnityEngine;
using UnityEngine.Events;

[System.Serializable]
public class MyIntEvent : UnityEvent<int>
{
}

public class ExampleClass : MonoBehaviour
{
    public MyIntEvent m_MyEvent;

    void Start()
    {
        if (m_MyEvent == null)
            m_MyEvent = new MyIntEvent();

        m_MyEvent.AddListener(Ping);
    }

    void Update()
    {
        if (Input.anyKeyDown && m_MyEvent != null)
        {
            m_MyEvent.Invoke(5);
        }
    }

    void Ping(int i)
    {
        Debug.Log("Ping" + i);
    }
}

3.四个参数

Unity - Scripting API: UnityEvent<T0,T1,T2,T3>

using UnityEngine;
using UnityEngine.Events;


[System.Serializable]
public class MyIntEvent : UnityEvent<int, int, int, int>
{
}

public class ExampleClass : MonoBehaviour
{
    public MyIntEvent m_MyEvent;

    void Start()
    {
        if (m_MyEvent == null)
            m_MyEvent = new MyIntEvent();

        m_MyEvent.AddListener(Ping);
    }

    void Update()
    {
        if (Input.anyKeyDown && m_MyEvent != null)
        {
            m_MyEvent.Invoke(5, 6, 7, 8);
        }
    }

    void Ping(int i, int j, int k, int l)
    {
        Debug.Log("Ping" + i + j + k + l);
    }
}