Module tick 

Main-world tick stages and the Tick resource.

• Each stage is a bevy_ecs SystemSet.
• Ordering is enforced by .chain() in crate::app::App::new.
• The render schedule runs after the main schedule and the extract step; see crate::render_world.

Structs

Tick

Per-tick frame clock resource.

Enums

TickStage

The five ordered main-world stages of a Lumen tick.