Adds an object to the behavior.
Optionaleasing: EasingFunctionConfigures a tween behavior with the specified delay.
Configures a tween behavior with the specified duration.
Configures a tween behavior with the specified easing function.
Configures a tween and starts it.
Optionaleasing: EasingFunctionConfigures a tween and starts it. Returns undefined if nothing to tween.
Optionaleasing: EasingFunction
A factory entity that can create more behaviors or tweens.