0002 – Rust server and core, Godot client

Status:

Accepted

Date:

2026-10-04

Context

The server must simulate many entities safely and fast. Client prediction must agree with server rules.

Decision

Server and shared core in Rust; the core is linked into the Godot 4 client through GDExtension (godot-rust).

Consequences

• One implementation of rules, no divergence between client and server.

• Contributors need Rust for core work; client UI work stays in GDScript.

• Bevy was considered for the client; rejected for now because it lacks an editor and its API still changes often.