Environment overrides

• Sky Color: Set in Blender on the scene context. During load, the SkyColor effect applies the tint to the shared WorldEnvironment so new levels inherit the same background.
• Gravity: The Gravity effect rewrites physics/3d/default_gravity at runtime based on the scene property. Use this when a level needs lighter jumps or heavier falls.

Background music

• Provide one or more music dictionaries (with a path) on the scene context to build the playlist.
• Set BackgroundMusicVolume to control dB on load. Music instances are stored globally and cleared on unload.

Scene events

• Scene-level event data is kept on the scene root so triggers and animations can access event participant metadata when dispatching events.
• Use event names consistently across triggers, frame events, and commands so handlers in the Godot scene tree can listen with FPEEventManager.