namespace Chronos
{
	/// <summary>
	/// An occurrence action that is executed when time goes forward.
	/// </summary>
	public delegate void ForwardAction();

	/// <summary>
	/// An occurrence action that is executed when time goes backward.
	/// </summary>
	public delegate void BackwardAction();

	internal sealed class ActionOccurence : Occurrence
	{
		private ForwardAction forward { get; set; }
		private BackwardAction backward { get; set; }

		public ActionOccurence(ForwardAction forward, BackwardAction backward)
		{
			this.forward = forward;
			this.backward = backward;
		}

		public override void Forward()
		{
			forward();
		}

		public override void Backward()
		{
			backward();
		}
	}
}