Calls the Actor#act(float) method on each actor in the stage. Typically called
each frame. This meth
Adds an actor to the root of the stage.
Creates a stage with the specified viewport and batch. This can be used to avoid
creating a new batc
The viewport's world height.
Returns the root group which holds all actors in the stage.
The viewport's camera.
The viewport's world width.
Adds an action to the root of the stage.
Adds a listener to the root.
Cancels touch focus for the specified actor.
Removes the root's children, actions, and listeners.