84 lines
2.2 KiB
C#
84 lines
2.2 KiB
C#
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/* ---------------------------------------
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* Sourced from: https://wiki.unity3d.com/index.php/Singleton
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* Modified by: Martín Pane (martintayx@gmail.com) (@tayx94)
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* Contributors: https://github.com/Tayx94/graphy/graphs/contributors
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* Project: Graphy - Ultimate Stats Monitor
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* Date: 07-Jul-17
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* Studio: Tayx
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*
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* Git repo: https://github.com/Tayx94/graphy
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*
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* This project is released under the MIT license.
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* Attribution is not required, but it is always welcomed!
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* -------------------------------------*/
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using UnityEngine;
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namespace Tayx.Graphy.Utils
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{
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/// <summary>
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/// Be aware this will not prevent a non singleton constructor
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/// such as `T myT = new T();`
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/// To prevent that, add `protected T () {}` to your singleton class.
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/// </summary>
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public class G_Singleton<T> : MonoBehaviour where T : MonoBehaviour
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{
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#region Variables -> Private
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private static T _instance;
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private static object _lock = new object();
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#endregion
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#region Properties -> Public
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public static T Instance
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{
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get
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{
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lock (_lock)
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{
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if (_instance == null)
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{
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Debug.Log
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(
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"[Singleton] An instance of " + typeof(T) +
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" is trying to be accessed, but it wasn't initialized first. " +
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"Make sure to add an instance of " + typeof(T) + " in the scene before " +
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" trying to access it."
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);
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}
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return _instance;
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}
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}
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}
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#endregion
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#region Methods -> Unity Callbacks
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void Awake()
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{
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if (_instance != null)
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{
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Destroy(gameObject);
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}
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else
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{
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_instance = GetComponent<T>();
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}
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}
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void OnDestroy()
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{
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if (_instance == this)
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{
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_instance = null;
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}
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}
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#endregion
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}
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}
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