84 lines
2.0 KiB
C#
84 lines
2.0 KiB
C#
using UnityEngine;
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using UnityEngine.Events;
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using System.Collections;
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using System.Collections.Generic;
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/* https://learn.unity.com/tutorial/create-a-simple-messaging-system-with-events */
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public class EventManager<T, V> : MonoBehaviour
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where V : UnityEvent //where V : UnityEvent<int>
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{
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private Dictionary<T, V> eventDictionary;
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private static EventManager<T, V> eventManager;
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public static EventManager<T, V> instance
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{
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get
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{
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if (!eventManager)
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{
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eventManager = FindObjectOfType(typeof(EventManager<T, V>)) as EventManager<T, V>;
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if (!eventManager)
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{
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Debug.LogError("There needs to be one active EventManger script on a GameObject in your scene.");
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}
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else
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{
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eventManager.Init();
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}
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}
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return eventManager;
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}
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}
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void Init()
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{
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if (eventDictionary == null)
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{
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eventDictionary = new Dictionary<T, V>();
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}
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}
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public static void StartListening(T eventName, UnityAction listener)
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{
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V thisEvent = null;
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if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
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{
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thisEvent.AddListener(listener);
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}
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else
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{
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thisEvent = (V)(new UnityEvent());
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thisEvent.AddListener(listener);
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instance.eventDictionary.Add(eventName, thisEvent);
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}
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}
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public static void StopListening(T eventName, UnityAction listener)
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{
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if (eventManager == null) return;
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V thisEvent = null;
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if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
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{
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thisEvent.RemoveListener(listener);
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}
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}
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public static void TriggerEvent(T eventName)
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{
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V thisEvent = null;
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if (instance.eventDictionary.TryGetValue(eventName, out thisEvent))
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{
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thisEvent.Invoke();
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}
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}
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} |