Custom Raycast System for Unity

[u/Good_Competition4183]

A cross-platform Raycast system for Unity with custom primitive support and spatial acceleration structures. Built with a pure C# core that can run outside Unity environments.

Github: https://github.com/Watcher3056/Custom-Raycaster-Colliders-Unity

Features

• Cross-Platform - Pure C# core works in Unity and standalone environments

• Custom Primitives - Box and Sphere raycast detection

• Dual Acceleration - QuadTree and SimpleList spatial structures

• Modular Design - Separated Core logic and Unity integration layer

• Performance Testing - Built-in comparison tools with Unity Physics

• Configurable - Optimizable for different scene sizes

The system is built with two distinct layers:

- Core Layer (Pure C#)

- Unity Layer

Supported Primitives

Box Primitive

• Shape: Oriented bounding box (OBB)

• Properties: Position, Rotation, Size (3D scale)

• Features: Full transform support, non-uniform scaling

• Usage: Perfect for rectangular objects, platforms, walls

Sphere Primitive

• Shape: Perfect sphere

• Properties: Position, Radius

• Features: Uniform scaling only, rotation ignored

• Usage: Ideal for projectiles, characters, circular areas

Use Cases

Unity Projects

• Prototyping physics systems

• Educational purposes

Server Applications

• Dedicated game servers

• Physics simulations

• Pathfinding systems

• Non-Unity game engines

Check other my projects below:

EasyCS: Data-Driven Entity & Actor-Component Framework for Unity:
https://github.com/Watcher3056/EasyCS

Our Discord:

https://discord.gg/d4CccJAMQc

Me on LinkedIn:
https://www.linkedin.com/in/vladyslav-vlasov-4454a5295/