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Feature Overview

CAT combines asset authoring, runtime state, physics, interaction, control, and networking in one modular assembly workflow.

Modular Part Models

Author reusable bodies, connectors, actuators, and gameplay features.

Assembly Authoring

Compose Part Models into reusable Assembly assets with editor validation.

Runtime Assemblies

Load authored assets into a flat, queryable runtime assembly state.

Chaos Physics

Project assembly snapshots into simulated bodies, constraints, and actuators.

Grab and Snap

Grab parts, preview placement, snap connectors, and detach relations.

Blueprint Controllers

Drive ground, aircraft, and watercraft assemblies through session-owned controllers.

Gameplay Features

Add part-scoped behaviors with semantic input slots and lifecycle events.

Multiplayer

Replicate authoritative assembly state and synchronize projected physics.

Designed to work together

A connector snapped through the Grab workflow becomes a Relation in the Assembly State, rebuilds the physics projection, and is then delivered to clients through replication.

Where to continue

  • Follow the Quick Start for the shortest path to a simulated assembly.
  • Use User Guides for task-oriented workflows.
  • Use the API Reference when you already know which CAT type you need.