Initial Commit

openspec/changes/enterprise-gaming-r3f-physics-rapier/proposal.md

@@ -0,0 +1,48 @@
+# OpenSpec Change: enterprise-gaming-r3f-physics-rapier
+
+- **Change ID**: enterprise-gaming-r3f-physics-rapier
+- **Package**: `@suaveplan/r3f-physics-rapier`
+- **Category**: gaming/physics
+- **Target path**: `gaming/physics/r3f-physics-rapier`
+- **Status**: PROPOSED
+- **Date**: 2026-04-24
+
+---
+
+## Summary
+
+Deliver `@suaveplan/r3f-physics-rapier` on the genesis branch from scratch at enterprise quality. The package provides a Rapier physics engine integration for React Three Fiber, implementing the `PhysicsBackend` interface from `@suaveplan/r3f-physics-core`. It wraps `@dimforge/rapier3d-compat` (WASM); a `RapierPhysicsProvider` initialises the WASM module asynchronously and provides a `RAPIER.World`; `RigidBody`, `Collider`, and `Joint` components wrap the corresponding Rapier APIs; `useRapierContext()` exposes the raw `RAPIER.World` for advanced usage. Genesis adds structured errors, and 100% coverage.
+
+---
+
+## Available workspace deps
+
+`@suaveplan/error`, `@suaveplan/r3f-physics-core`, react, `@react-three/fiber`, `@dimforge/rapier3d-compat`, three.
+
+---
+
+## Public API surface
+
+```ts
+function RapierPhysicsProvider(props: RapierProviderProps): JSX.Element
+function RigidBody(props: RigidBodyProps): JSX.Element
+function Collider(props: ColliderProps): JSX.Element
+function useRapierContext(): RapierCon```text
+
+---
+
+## File layout
+
+```text
+gaming/physics/r3f-physics-rapier/
+  package.json / tsconfig.json / vitest.config.ts
+  src/
+    index.ts / error-codes.ts
+    types/common.ts + md
+    context/rapier-provider.tsx + md + test
+    hooks/use-rapier-context.ts + md + test
+    components/
+      RigidBody/ (tsx + md + test + stories + index)
+      Collider/ (tsx + md + test + stories + index)
+  tests/integration.test.ts
+```