Added manual binding

Author: DerKekser

Assets/Kekser/PowerSingleton/Single.cs

@@ -11,10 +11,15 @@ public static T Instance {
             get
             {
                 if (_rawInstance != null) return _instance;
-                _rawInstance = PowerSingletonManager.Get(typeof(T));
-                _instance = _rawInstance as T;
+                Bind(PowerSingletonManager.Get(typeof(T)));
                 return _instance;
             }
         }
+        
+        public static void Bind(Object instance)
+        {
+            _rawInstance = instance;
+            _instance = instance as T;
+        }
     }
 }

Assets/Kekser/PowerSingleton/package.json

@@ -2,7 +2,7 @@
     "name": "com.kekser.powersingleton",
     "displayName": "PowerSingleton",
     "author": { "name": "Kekser", "url": "https://github.com/DerKekser" },
-    "version": "1.2.3",
+    "version": "1.3.0",
     "unity": "2020.3",
     "description": "A simple singleton system for Unity",
     "keywords": [ "singleton" ],

Assets/Kekser/Tests/BindSingleton.cs

@@ -0,0 +1,19 @@
+using UnityEngine;
+
+namespace Kekser.Tests
+{
+    public class BindSingleton : MonoBehaviour
+    {
+        public static bool Created = false;
+        
+        private void Awake()
+        {
+            Created = true;
+        }
+        
+        private void OnDestroy()
+        {
+            Created = false;
+        }
+    }
+}

Assets/Kekser/Tests/BindSingleton.cs.meta

@@ -99,6 +99,18 @@ public IEnumerator TestDeleteSingleton()
         Assert.IsNull(Single<DefaultSingleton>.Instance);
         LogAssert.Expect(LogType.Error, "PowerSingletonManager: No PowerSingletonAttribute for type Kekser.Tests.DefaultSingleton, and no instance in scene");
     }
+    
+    [UnityTest]
+    [LoadScene("Assets/Kekser/Tests/Scenes/PowerSingletonTestScene.unity")]
+    public IEnumerator TestBindSingleton()
+    {
+        yield return null;
+        Assert.IsFalse(BindSingleton.Created);
+        Single<BindSingleton>.Bind(new GameObject("BindSingleton").AddComponent<BindSingleton>());
+        yield return null;
+        Assert.IsTrue(BindSingleton.Created);
+        Assert.IsNotNull(Single<BindSingleton>.Instance);
+    }
 }
 
 public class LoadSceneAttribute : NUnitAttribute, IOuterUnityTestAction

Assets/Kekser/Tests/PowerSingletonTests.cs

@@ -9,6 +9,7 @@
     - [If Needed Creation](#if-needed-creation)
     - [Auto Creation](#auto-creation)
 - [DontDestroyOnLoad](#dontdestroyonload)
+- [Manual Binding](#manual-binding)
 - [Install](#install)
     - [Install via Unity Package](#install-via-unity-package)
     - [Install via git URL](#install-via-git-url)
@@ -136,6 +137,17 @@ public class GameManager : MonoBehaviour
     // ...
 }
 ```
+### Manual Binding
+
+You can manually bind a MonoBehaviour to a singleton.
+This is useful if you cannot use the `PowerSingleton` attribute or if you want to change the singleton at runtime.
+
+```csharp
+using Kekser.PowerSingleton;
+
+GameManager gameManager = new GameObject("GameManager").AddComponent<GameManager>();
+Single<GameManager>.Bind(gameManager);
+```
 ### Install
 
 #### Install via Unity Package