Called with fixed timestep for physics calculations
Called when a scene is destroyed
Called when a scene becomes active
Called when a scene becomes inactive, but still remains in memory
OptionalonCalled when a scene is loaded. Used to load required resources for the system such as images, fonts, etc.
OptionalupdateCalled every frame with variable timestep
Physics system that handles 2D physics simulation and collision detection
Manages rigid body physics and collision detection and resolution.