suaveplan/openspec/changes/enterprise-gaming-r3f-physics-core/proposal.md

OpenSpec Change: enterprise-gaming-r3f-physics-core

• Change ID: enterprise-gaming-r3f-physics-core
• Package: @suaveplan/r3f-physics-core
• Category: gaming/physics
• Target path: gaming/physics/r3f-physics-core
• Status: PROPOSED
• Date: 2026-04-24

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Summary

Deliver @suaveplan/r3f-physics-core on the genesis branch from scratch at enterprise quality. The package provides a physics engine abstraction layer for React Three Fiber: a PhysicsProvider React context wraps any physics backend (Rapier, Cannon, custom); useRigidBody(), useCollider(), and usePhysicsWorld() hooks provide access to physics primitives in a backend-agnostic way. The PhysicsBackend interface matches @suaveplan/character-physics's PhysicsBackend + @suaveplan/vehicle-physics's VehiclePhysicsBackend. Genesis adds structured errors, OTel step-time histogram, and 100% coverage.

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Available workspace deps

@suaveplan/error, @suaveplan/types, @suaveplan/events, react, @react-three/fiber, three.

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Public API surface

function PhysicsProvider(props: PhysicsProviderProps): JSX.Element
// backend, gravity, fixedStep, debug

function usePhysicsWorld(): PhysicsWorld
function useRigidBody(options: RigidBodyOptions): RigidBodyHandle
function useCollider(body: RigidBodyHandle, desc: ColliderDesc): ColliderHandle

interface PhysicsWorld {
  step(dt: number): void
  raycast(origin: Vec3, dir: Vec3, maxDist: number): RaycastHit | null
  readonly bodies: ReadonlyMap<string, RigidBodyHandle>
}

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File layout

gaming/physics/r3f-physics-core/
  package.json / tsconfig.json / vitest.config.ts
  src/
    index.ts / error-codes.ts
    types/common.ts + md
    context/physics-provider.tsx + md + test
    hooks/
      use-physics-world.ts + md + test
      use-rigid-body.ts + md + test
      use-collider.ts + md + test
  tests/integration.test.ts