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roblox-physics

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Implement Roblox physical simulation and queries with assemblies, anchoring, constraints, collision groups, CanCollide/CanTouch/CanQuery, raycasts and overlap queries, mass, impulses, forces, velocity, moving assemblies, cleanup, and network ownership. Use for Roblox collisions, hit detection, RaycastParams, PhysicsService, projectiles, vehicles, knockback, constraints, deprecated BodyMovers, unstable motion, or client-owned physics exploits.

skills/other-engines/roblox-physics/SKILL.md

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Network or broad shell
Last checked
Nov 11, 2026

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8,349
Repository last updated
Nov 10, 2026
License
Apache-2.0

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# Roblox physics

Choose deliberately between simulation, character control, hit detection, and visual-only motion;
they are different jobs. Targets Roblox's rolling platform APIs. Pair with `physics-tuning` for
engine-neutral stability and feel.

## When to use

- Use for BasePart assemblies, constraints, collision/query policy, ray/overlap queries, forces,
  impulses, moving physical objects, network ownership, or physics cleanup.
- Use when `Touched` is unreliable/security-sensitive, parts tunnel or jitter, a mechanism breaks
  when anchored, or old BodyMover patterns appear.

**When not to use:** ordinary Humanoid lifecycle/control belongs to `roblox-characters`; remote
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