C#

public sealed  class EnterMineAndDigForGold : IState<Miner>
    {
        static readonly EnterMineAndDigForGold _instance = new EnterMineAndDigForGold();

        public static IState<Miner> Instance
        {
            get
            {
                return _instance;
            }
        }

        public  void Enter(Miner owner)
        {

            if (owner.Location != LocationType.Mine)
            {
                //Change location if minor is not in the mine
                owner.Location = LocationType.Mine;
                Console.WriteLine("Walked into the mine");
            }
        }

        public  void Execute(Miner owner)
        {

            owner.AddToGoldCarried(1);
            Console.WriteLine("Picked up some gold");
            owner.IncreaseFatigue(1);
            Console.WriteLine("Getting more fatigued");

            if (owner.PocketFull)
            {
                //change state to visit bank
            }

            if (owner.IsThirsty)
            {
                //change state to get a drink
            }
        }

        public  void Exit(Miner owner)
        {
            Console.WriteLine(owner.GetType().Name + " Is leaving the mine");
        }
    }