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Commit 77c325f

Browse files
Revised the singletons implementation
Added PersistentMonoSingleton which is persistent across scenes Made MonoSingleton non-persistent Added ISingleton interface for unifying the methods and calls Add assembly definition Added namespace (UnityCommunity.UnitySingleton)
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‎.vsconfig

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{
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"version": "1.0",
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"components": [
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"Microsoft.VisualStudio.Workload.ManagedGame"
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]
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}

‎Assets/Scripts/GameManager.cs

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‎Assets/Scripts/MonoSingleton.cs

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‎Assets/Scripts/SceneSingleton.meta renamed to ‎Assets/Scripts/Runtime.meta

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‎Assets/Scripts/Runtime/ISingleton.cs

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using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace UnityCommunity.UnitySingleton
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{
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/// <summary>
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/// The singleton interface.
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/// </summary>
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public interface ISingleton
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{
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public void InitializeSingleton();
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public void ClearSingleton();
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}
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}

‎Assets/Scripts/SceneSingleton/SceneSingleton.cs.meta renamed to ‎Assets/Scripts/Runtime/ISingleton.cs.meta

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‎Assets/Scripts/Runtime/MonoSingleton.cs

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using System.Collections;
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using System.Collections.Generic;
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using UnityCommunity.UnitySingleton;
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using UnityEngine;
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namespace UnityCommunity.UnitySingleton
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{
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/// <summary>
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/// The basic MonoBehaviour singleton implementation, this singleton is destroyed after scene changes, use <see cref="PersistentMonoSingleton{T}"/> if you want a persistent and global singleton instance.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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public abstract class MonoSingleton<T> : MonoBehaviour, ISingleton where T : MonoSingleton<T>
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{
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#region Fields
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/// <summary>
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/// The instance.
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/// </summary>
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private static T instance;
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/// <summary>
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/// The initialization status of the singleton's instance.
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/// </summary>
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private SingletonInitializationStatus initializationStatus = SingletonInitializationStatus.None;
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#endregion
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#region Properties
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/// <summary>
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/// Gets the instance.
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/// </summary>
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/// <value>The instance.</value>
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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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if (instance == null)
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{
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instance = FindObjectOfType<T>();
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if (instance == null)
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{
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GameObject obj = new GameObject();
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obj.name = typeof(T).Name;
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instance = obj.AddComponent<T>();
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instance.OnMonoSingletonCreated();
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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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/// <summary>
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/// Gets whether the singleton's instance is initialized.
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/// </summary>
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public virtual bool IsInitialized => this.initializationStatus == SingletonInitializationStatus.Initialized;
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#endregion
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#region Unity Messages
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/// <summary>
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/// Use this for initialization.
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/// </summary>
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protected virtual void Awake()
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{
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if (instance == null)
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{
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instance = this as T;
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// Initialize existing instance
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InitializeSingleton();
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}
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else
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{
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// Destory duplicates
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if (Application.isPlaying)
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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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DestroyImmediate(gameObject);
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}
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}
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}
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#endregion
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#region Protected Methods
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/// <summary>
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/// This gets called once the singleton's instance is created.
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/// </summary>
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protected virtual void OnMonoSingletonCreated()
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{
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}
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protected virtual void OnInitializing()
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{
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}
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protected virtual void OnInitialized()
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{
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}
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#endregion
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#region Public Methods
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public virtual void InitializeSingleton()
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{
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if (this.initializationStatus != SingletonInitializationStatus.None)
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{
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return;
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}
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this.initializationStatus = SingletonInitializationStatus.Initializing;
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OnInitializing();
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this.initializationStatus = SingletonInitializationStatus.Initialized;
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OnInitialized();
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}
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public virtual void ClearSingleton() { }
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public static void CreateInstance()
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{
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DestroyInstance();
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instance = Instance;
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}
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public static void DestroyInstance()
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{
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if (instance == null)
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{
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return;
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}
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instance.ClearSingleton();
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instance = default(T);
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}
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#endregion
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}
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}
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using System.Collections;
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using System.Collections.Generic;
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using UnityCommunity.UnitySingleton;
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using UnityEngine;
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namespace UnityCommunity.UnitySingleton
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{
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/// <summary>
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/// This singleton is persistent across scenes by calling <see cref="UnityEngine.Object.DontDestroyOnLoad(Object)"/>.
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/// </summary>
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/// <typeparam name="T"></typeparam>
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public abstract class PersistentMonoSingleton<T> : MonoSingleton<T> where T : MonoSingleton<T>
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{
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#region Protected Methods
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protected override void OnInitializing()
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{
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base.OnInitializing();
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if (Application.isPlaying)
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{
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DontDestroyOnLoad(gameObject);
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}
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}
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#endregion
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}
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}

‎Assets/Scripts/Runtime/PersistentMonoSingleton.cs.meta

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