sledgemapper/Sledgemapper.Shared/Entities/Tile.cs

namespace Sledgemapper.Shared.Entities
{
    public abstract class BaseMapEntity
    {
        public int X { get; set; }
        public int Y { get; set; }
        public string ID { get; set; }
        public int Rotation { get; set; }
        public override string ToString()
        {
            return $"{X}_{Y}";
        }
        public double Timestamp { get; set; }
    }

    public class Tile : BaseMapEntity
    {
    }

    public class Line : BaseMapEntity
    {
        public int EndX { get; set; }
        public int EndY { get; set; }

        public override string ToString()
        {
            return $"{X}_{Y}_{EndX}_{EndY}";
        }
    }

     public class SnapPoint : BaseMapEntity
    {
        public int Index { get; set; }

        public override string ToString()
        {
            return $"{X}_{Y}_{Index}";
        }
    }
}