Diagnosing the Current Engine Structure

Create an inventory of the engine’s runtime, editor, platform, and game-specific responsibilities.

Draw a dependency map showing which existing systems call, store, or create other systems.

Trace one frame from input through gameplay, transforms, collision, and rendering.

Assign a single primary responsibility to each major class or subsystem in the current engine.

Identify responsibilities that should be removed from the Scene class because they belong to another subsystem.

Detect circular dependencies and bidirectional knowledge between existing systems.

Define architectural constraints that must remain working during the refactor, including play mode, editor camera, multiplayer, and packaging.