Question

好的，我有点困惑。我通过this教程研究了UnityEvent和消息系统。但我有一个问题，我无法理解。如何将参数传递给Invoking函数？

例如（我在教程中有EventManager）：

void OnEnable() {
        EventManager.StartListening ("OnPlayerTeleport", TeleportPlayer);
    }

    void OnDisable() {
        EventManager.StopListening ("OnPlayerTeleport", TeleportPlayer);
    }

    void TeleportPlayer () {
        float yPos = transform.position.y;
        yPos += 20.0f;
        transform.position = new Vector3 (transform.position.x, yPos, transform.position.z);
    }

我有触发器：

void Update () {
    if (Input.GetButtonDown ("Teleport")) {
        EventManager.TriggerEvent ("OnPlayerTeleport");
    }
}

但是，如果我想通过＆＃39;身高＆＃39;功能价值＆＃39; TeleportPlayer＆＃39;：

void TeleportPlayer (float h) {
    float yPos = transform.position.y;
    yPos += h;
    transform.position = new Vector3 (transform.position.x, yPos, transform.position.z);
}

我该怎么做？

Answer 1

使用C＃delegate / Action而不是Unity UnityEvent。它比Unity的活动更快。几天前我移植了it。你只需稍微修改一下即可得到你想要的东西。

1 。通过将所有Action声明更改为float来Action取Action<float>这意味着它将允许{{1}的函数参数。

2 。现在，让float函数采用TriggerEvent参数。通过改变

float

到

public static void TriggerEvent(string eventName)

这是新的public static void TriggerEvent(string eventName, float h)脚本。

EventManager

测试：

using UnityEngine;
using System.Collections.Generic;
using System;

public class EventManager : MonoBehaviour
{

    private Dictionary<string, Action<float>> eventDictionary;

    private static EventManager eventManager;

    public static EventManager instance
    {
        get
        {
            if (!eventManager)
            {
                eventManager = FindObjectOfType(typeof(EventManager)) as EventManager;

                if (!eventManager)
                {
                    Debug.LogError("There needs to be one active EventManger script on a GameObject in your scene.");
                }
                else
                {
                    eventManager.Init();
                }
            }

            return eventManager;
        }
    }

    void Init()
    {
        if (eventDictionary == null)
        {
            eventDictionary = new Dictionary<string, Action<float>>();
        }
    }

    public static void StartListening(string eventName, Action<float> listener)
    {

        Action<float> thisEvent;
        if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
        {
            thisEvent += listener;
        }
        else
        {
            thisEvent += listener;
            instance.eventDictionary.Add(eventName, thisEvent);
        }
    }

    public static void StopListening(string eventName, Action<float> listener)
    {
        if (eventManager == null) return;
        Action<float> thisEvent;
        if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
        {
            thisEvent -= listener;
        }
    }

    public static void TriggerEvent(string eventName, float h)
    {
        Action<float> thisEvent = null;
        if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
        {
            thisEvent.Invoke(h);
        }
    }
}

将参数传递给UnityEvent

1 个答案: