using System;

using System.IO;

public class Program

{

    public override void Serialize(string path, TiledNavMesh mesh)

    {

        var fileStream = new FileStream(path, FileMode.Create, FileAccess.Write);

        using (var binaryWriter = new BinaryWriter(fileStream))

        {

            binaryWriter.Write((float)mesh.Origin.X);

            binaryWriter.Write((float)mesh.Origin.Y);

            binaryWriter.Write((float)mesh.Origin.Z);

            binaryWriter.Write((float)mesh.TileWidth);

            binaryWriter.Write((float)mesh.TileHeight);

            binaryWriter.Write((int)mesh.MaxTiles);

            binaryWriter.Write((int)mesh.MaxPolys);

            binaryWriter.Write((int)mesh.Tiles.Count);

            foreach (var tile in mesh.Tiles)

            {

                var id = mesh.GetTileRef(tile);

                var meshTile = SerializeMeshTile(tile, id);

                binaryWriter.Write(meshTile);

            }

        }

    }

    public override TiledNavMesh Deserialize(string path)

    {

        var fileStream = new FileStream(path, FileMode.Open, FileAccess.Read);

        using (var binaryReader = new BinaryReader(fileStream))

        {

            var x = binaryReader.ReadSingle();

            var y = binaryReader.ReadSingle();

            var z = binaryReader.ReadSingle();

            var origin = new Vector3(x, y, z);

            var tileWidth = binaryReader.ReadSingle();

            var tileHeight = binaryReader.ReadSingle();

            var maxTiles = binaryReader.ReadInt32();

            var maxPolys = binaryReader.ReadInt32();

            var mesh = new TiledNavMesh(origin, tileWidth, tileHeight, maxTiles, maxPolys);

            var count = binaryReader.ReadInt32();

            for (var i = 0; i < count; i++)

            {

                NavPolyId tileRef;

                var tile = DeserializeMeshTile(mesh.IdManager, out tileRef);

            }

            return mesh;

        }

    }

    private byte[] SerializeMeshTile(NavTile tile, NavPolyId id)

    {

        var memoryStream = new MemoryStream();

        using (var binaryWriter = new BinaryWriter(memoryStream))

        {

            binaryWriter.Write((int)id.Id); 

            binaryWriter.Write((int)tile.Location.X);

            binaryWriter.Write((int)tile.Location.Y);

            binaryWriter.Write((int)tile.Layer);

            binaryWriter.Write((int)tile.Salt);

            binaryWriter.Write((float)tile.Bounds.Min.X);

            binaryWriter.Write((float)tile.Bounds.Min.Y);

            binaryWriter.Write((float)tile.Bounds.Min.Z);

            binaryWriter.Write((float)tile.Bounds.Max.X);

            binaryWriter.Write((float)tile.Bounds.Max.Y);

            binaryWriter.Write((float)tile.Bounds.Max.Z);

            var polys = new List<NavPoly>(tile.Polys);

            binaryWriter.Write((int)polys.Count);

            foreach (var poly in polys)

            {

                binaryWriter.Write((byte)poly.PolyType);

            }

        }

        return memoryStream.ToArray();

    }

}