fenomas/voxel-physics-engine

This is a voxel physics engine for voxel-based games that provides realistic physics simulations including collisions, friction, and gravity. It's designed for developers building voxel games who need terrain physics without having to implement complex collision detection and response systems themselves. The engine works with any voxel engine by accepting simple boolean functions to determine solid and liquid voxels, and supports features like auto-stepping, collision callbacks, and customizable physical properties.