Starting a new chat is exactly the right move. It protects this main chat's
context window from being flooded with server-side physics code, keeping this
thread purely focused on the core voxel engine architecture.
By spinning up a dedicated "Network & Physics" chat, the AI can focus strictly
on the Node/Bun, WebSocket, and Rapier3D implementation without getting
confused by our OPFS or Web Worker meshing logic.
Here is the exact delegation package to hand over to a new chat to build the
working prototype.
Phase 10: Delegation Package (Headless Physics Node)
Copy and paste the following into a NEW dev chat:
> Context: I am building a distributed WebGL voxel engine. The visual client
uses Babylon.js. I need to build a headless authoritative physics server using
Bun (or Node.js), the ws WebSocket library, and @dimforge/rapier3d-compat.
> The Architecture:
>  * The server receives voxel placements from the client and creates
invisible static box colliders (1x1x1 units).
>  * The server simulates dynamic entities (like a bouncing ball).
>  * The server steps the physics world at 60Hz and broadcasts the kinematic
state (Position and Velocity) of all dynamic entities to the client as a
highly compressed Float32Array.
>  * The Babylon.js client uses dead reckoning to move visual spheres smoothly
based on the velocity vectors.
> Requirement 1: The Server Code (server.ts)
> Write the Bun/Node.js server script. It must:
>  * Initialize a Rapier3D world with gravity.
>  * Drop a dynamic sphere (restitution 0.7) from a height of 20 units.
>  * Listen for WebSocket JSON messages: { wx, wy, wz, voxelData }. If
voxelData > 0, create a static Rapier cuboid at those coordinates. If 0,
remove the collider.
>  * Run a 60Hz interval that calls world.step() and broadcasts a Float32Array
containing [entityId, px, py, pz, vx, vy, vz] for all dynamic entities.
> Requirement 2: The Client Receiver (network.ts)
> Write the TypeScript snippet for the Babylon.js client. It must:
>  * Connect to the WebSocket.
>  * Forward block placements to the server via JSON.
>  * Parse the incoming Float32Array and update a Map of dynamic entities
(creating new Babylon.js spheres if a new ID appears, and updating their
target position and velocity).
>  * Provide the scene.onBeforeRenderObservable loop that applies dead
reckoning (position += velocity * deltaTime) to the visual spheres.
> Deliverable: Provide the complete server.ts and the client-side network.ts
snippet. Prioritize performance and concise code.
> 
Once they generate the server and client network code, bring it back here or
test it directly. You are about to have a true distributed physics simulation
running alongside your infinite voxel world!