Core Engine

The simvx.core package is the backend-agnostic foundation of SimVX. It provides the node system, scene tree, and all gameplay systems — no rendering dependency required.

Subsystems

System	Guide	Description
Nodes	Node System	Scene tree hierarchy, lifecycle, properties, signals, groups, coroutines
Input	Input System	Actions, keyboard, mouse, gamepad, and touch
Animation	Animation	Tweens, sprite sheets, keyframe clips, state machines
Audio	SimVX Audio System	2D/3D spatial audio, buses, resource caching
UI	UI System	Controls, containers, theming, focus management
Math	Math Types	Vec2, Vec3, Quat, and matrix utilities (pure NumPy)
Collision	Collision & Physics	GJK narrowphase, AABB broadphase, raycasting
Scenes	Scenes & Serialization	JSON serialization, PackedScene prefabs
Particles	Particles	Particle emitter with CPU and GPU simulation modes
TileMap	TileMap	Grid-based 2D level design with auto-tiling
2D Lighting	2D Lighting	Point lights, directional lights, shadow occluders
CSG	Constructive Solid Geometry	Constructive solid geometry (boolean mesh operations)
Navigation	Navigation	A* pathfinding (graph and grid) with steering agents
Navigation 3D	3D Navigation	3D navigation meshes and pathfinding
Skeleton	Skeleton	Bone hierarchy and joint matrices for GPU skinning
Physics Engine	Physics Engine	Rigid body dynamics, forces, joints, collision response
Testing	Testing	Headless scene runner, input simulation, UI test harness

API Reference

See simvx.core for the complete API.