React Three Fiber physics

Check installed Fiber, React, and Rapier versions. Rapier 2 targets Fiber 9 / React 19; older projects need their compatible package line. Keep rendering and simulation ownership separate.

Falling and clickable body

Mount beneath Canvas with lighting. Physics loads WASM asynchronously; include Suspense. Cuboid collider arguments are half-extents, unlike BoxGeometry's full dimensions.

import { Suspense, useRef } from 'react'
import { CuboidCollider, Physics, RigidBody, type RapierRigidBody } from '@react-three/rapier'