unity-singleton-pattern

What problem does it solve?

Unity projects often require global systems (like GameManager, UIManager) that persist across scenes and are easy to reason about. Without a controlled lifecycle, duplicates and inconsistent states arise, leading to hard-to-trace bugs.

Core Features & Use Cases

• Singleton<T>: standard single instance that destroys duplicates to keep the original.
• PersistentSingleton<T>: persists across scene loads.
• RegulatorSingleton<T>: keeps the NEWEST instance by destroying older ones to support hot-swapping.
• StaticInstance<T>: lightweight global reference without strict duplication enforcement.
• Use Case: create GameManager as a PersistentSingleton to maintain score and state across scenes, while UIManager can be a simple Singleton for global UI control.

Quick Start

Attach a manager to a Unity GameObject and access it via its Instance property.