Simple 2D Time & Day Cycle (Unity)

Simple 2D Time & Day Cycle is a lightweight and efficient solution for managing time in your Unity 2D projects. Whether you are building a cozy farming sim, an RPG, or a survival game, this system provides the core logic needed to bring your world to life.

Designed with a "Logic-First" approach, it allows developers to easily sync world lighting with in-game hours using Unity’s AnimationCurve. It is fully decoupled, making it easy to plug into your existing UI or gameplay systems.

Key Features

• Real-time to Game-time Conversion: Easily define how many real-world minutes represent a full in-game day.
• 2D Global Lighting Integration: Native support for Unity’s URP 2D Lights.
• Curve-Based Intensity: Visually design your day/night transitions (Dawn, Noon, Dusk, Night) using the AnimationCurve editor.
• Event-Driven Architecture: Includes a NewDayDelegate to trigger specific game logic (like crop growth or shop restocking) exactly when the day flips.
• Save System Ready: Implements the ISaveable interface, making it easy to integrate with your existing persistence logic.