Fx2D: a fast, deterministic 2D rigid-body physics engine in C++20 — SAT collision detection, XPBD constraint solver, motorized joints, YAML scenes, headless mode for simulation, testing and reinforcement learning. Renders with raylib + ImGui.
reinforcement-learning cpp simulation imgui game-development raylib physics-engine collision-detection physics-simulation separating-axis-theorem 2d-game-engine 2d-physics rigid-body-dynamics game-physics cpp20 position-based-dynamics xpbd box2d-alternative
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Updated
Sep 28, 2026 - C++