INNER CODE UNIT · Python

create_app

AIScientists-Dev/WorldSeed · src/worldseed/server/app.py:49

def create_app(
    engine: WorldEngine | None = None,
    tick_interval: float = 1.0,
    run_id: str = "",
    port: int = 8000,
    auto_start_tick: bool = True,
) -> FastAPI:
    """Create a FastAPI app, optionally pre-wired to an engine.

    If engine is None, starts in lobby mode — dashboard shows Setup page.
    If engine is provided, starts in running mode immediately.

    auto_start_tick: if False, tick_runner is created but NOT started on
    app startup. Used by `play` command where tick starts only after all
    agents self-register via WebSocket.
    """
    if run_id and not run_id.strip():
        run_id = ""

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