AbstractOptionalfixedCalled at a fixed interval for physics and consistent logic.
The set of entities to process.
The fixed time step in seconds.
OptionalupdateCalled every frame during the main update loop.
The set of entities to process.
OptionaldeltaTime: numberTime passed since the last frame in seconds.
Optionaldebug: booleanWhether to draw debug information.
Base class for all systems in the Entity Component System. Systems contain the logic that processes entities with specific components.