/// @func BBMOD_State(_name)
///
/// @extends BBMOD_Class
///
/// @desc A state of a state machine.
///
/// @param {String} _name The name of the state.
///
/// @see BBMOD_StateMachine
function BBMOD_State(_name)
	: BBMOD_Class() constructor
{
	BBMOD_CLASS_GENERATED_BODY;

	/// @var {Struct.BBMOD_StateMachine} The state machine to which this state
	/// belongs or `undefined`.
	/// @readonly
	StateMachine = undefined;

	/// @var {String} The name of the state.
	Name = _name;

	/// @var {Function} A function executed when a state machines enters this
	/// state. Should take the state as the first argument. Default value is
	/// `undefined`.
	OnEnter = undefined;

	/// @var {Function} A function executed while the state is active. Should
	/// take the state as the first argument and delta time as the second.
	/// Default value is `undefined`.
	OnUpdate = undefined;

	/// @var {Function} A function executed when a state machine exists this
	/// state. Should take the state as the first argument. Default value is
	/// `undefined`.
	OnExit = undefined;

	/// @var {Bool} If `true` then the state is currently active.
	/// @readonly
	IsActive = false;

	/// @var {Real}
	/// @private
	__activeSince = 0;

	/// @func get_duration()
	///
	/// @desc Retrieves how long (in milliseconds) has the state been active for.
	///
	/// @return {Real} Number of milliseconds for which has the state been active.
	static get_duration = function () {
		gml_pragma("forceinline");
		return (current_time - __activeSince);
	};
}