Variable RIGID_BODY_SERIALIZERConst

The §79 serializer for RigidBody (§23, §26, §31, PH-17).

import { Collider, RigidBody, RIGID_BODY_SERIALIZER, COLLIDER_SERIALIZER } from "@fourjs/physics";

const registry = createDefaultComponentSerializers()
  .register(RigidBody, RIGID_BODY_SERIALIZER)
  .register(Collider, COLLIDER_SERIALIZER);
Copy

or, from an application, one call: registerSceneNodeTypes() in the umbrella four package registers both alongside the UI node types.

Registering the reloaded node with a world (world.addBody(node)) is a separate, explicit step. A document is a scene, not a simulation (§79): body ids, contact manifolds, and warm-start impulses are assigned by the act of registering, and reproducing a solve across a save needs a §34 snapshot beside the §79 document.