Before using this or any other singleton implementation please consider whether it is right for your project. Singletons have a lot of drawbacks.

Overview

Create MonoBehaviour singletons.

• Serialize fields and accessing them in the inspector
• Hook into Unity's loop (Update, FixedUpdate, etc)
• No more initialization scene!

Install (UPM)

1. In Unity, open the Package Manager
   Window > Package Management > Package Manager

2. Install Package from git URL
   Package Manager > + (in top left) > Install Package from git URL

3. Paste https://github.com/JohnnyHowe/unity-singleton.git and press Install

(Recommended) If you want a specific version, use
https://github.com/JohnnyHowe/unity-singleton.git#<version>

Usage

Create Your Class

public class ExampleSingleton: Singleton<ExampleSingleton>
{
	/// AwakeSystem is called similarly to MonoBehaviour.Awake.
	/// This is where you put your startup/initialization
	protected override void Initialize() { }

	public void DoSomething() { }
}

Create Game Systems Prefab

Just one of these in the project.
Each individual Singleton will live as a child of this.

• Add the SingletonMaster script.

• Place this in some resource folder.

Add Your System to the Prefab

Create a child object and put your Singleton script on it.

Access it From Anywhere

public class ThingThatUsesExampleGameSystem 
{
	public void CallDoSomething()
	{
		ExampleGameSystem.Instance.DoSomething();
	}
}