using System.Windows.Forms;

namespace Digger
{
    public class Terrain : ICreature
    {
        public static int DrawingPriority = 1;

        string ICreature.GetImageFileName()
        {
            return "Terrain.png";
        }

        int ICreature.GetDrawingPriority()
        {
            return DrawingPriority;
        }

        CreatureCommand ICreature.Act(int x, int y)
        {
            return new CreatureCommand();
        }

        bool ICreature.DeadInConflict(ICreature conflictedObject)
        {
            return false;
        }
    }

    public class Player : ICreature
    {
        public static int DrawingPriority = 0;

        CreatureCommand ICreature.Act(int x, int y)
        {
            var move = GetMove();
            move.TransformTo = this;

            var isInMapMove = IsInMap(x + move.DeltaX, y + move.DeltaY);

            return isInMapMove ? move : new CreatureCommand();
        }

        private static CreatureCommand GetMove()
        {
            var key = Game.KeyPressed;

            switch (key)
            {
                case Keys.Left:
                    return new CreatureCommand {DeltaX = -1};
                case Keys.Right:
                    return new CreatureCommand {DeltaX = 1};
                case Keys.Up:
                    return new CreatureCommand {DeltaY = -1};
                case Keys.Down:
                    return new CreatureCommand {DeltaY = 1};
                default:
                    return new CreatureCommand();
            }
        }

        private static bool IsInMap(int x, int y)
        {
            return x < Game.MapWidth && x >= 0 && y < Game.MapHeight && y >= 0;
        }

        bool ICreature.DeadInConflict(ICreature conflictedObject)
        {
            return false;
        }

        string ICreature.GetImageFileName()
        {
            return "Digger.png";
        }

        int ICreature.GetDrawingPriority()
        {
            return DrawingPriority;
        }
    }
}