/// <summary>
/// Reads the JMXVNVM1000 file format and extract all the required
/// </summary>
private static void ReadJMXVNVM1000(string Filename, TerrainMesh Mesh)
{
using (var fs = new FileStream(Filename, FileMode.Open, FileAccess.Read))
{
using (var br = new BinaryReader(fs))
{
// Header
br.SkipRead(12);
// Navigation Entries
ushort entryCount = br.ReadUInt16();
for (ushort i = 0; i < entryCount; i++)
{
br.SkipRead(30);
br.SkipRead(br.ReadUInt16() * 6);
}
// Navigation Cells
uint cellCount = br.ReadUInt32();
br.SkipRead(4);
for (uint i = 0; i < cellCount; i++)
{
br.SkipRead(16);
br.SkipRead(br.ReadByte() * 2);
}
// Navigation Region Links
br.SkipRead(br.ReadUInt32() * 27);
// Navigation Cell Links
br.SkipRead(br.ReadUInt32() * 23);
// Texture Map
br.SkipRead(96 * 96 * 8);
// Height Map
Mesh.Width = Mesh.Height = 97;
for (int y = 0; y < 97; y++)
{
for (int x = 0; x < 97; x++)
{
Mesh.Vertices.Add(new Vector3()
{
X = x * 20 + Mesh.OffsetPosX * 1920, Y = y * 20 + Mesh.OffsetPosY * 1920, Z = br.ReadSingle()
});
}
}
// Just skip everything else
// br.SkipRead(36);
// br.SkipRead(36 * 4);
}
}
}
/// <summary>
/// Application entry point
/// </summary>
static async Task Main(string[] args)
{
List <TerrainMesh> terrains = new List <TerrainMesh>();
// Load files to convert
string[] filenames = args;
if (filenames.Length == 0)
{
// Find all .nvm files inside current folder
filenames = Directory.GetFiles(Directory.GetCurrentDirectory(), "*.nvm");
}
// Loading terrain
foreach (var path in filenames)
{
Console.WriteLine("Loading " + path);
var filename = Path.GetFileName(path);
// Gets the tile map (X,Y) from Region Id
var match = Regex.Match(filename, "([0-9a-zA-Z]{2})([0-9a-zA-Z]{2}).nvm$");
if (!match.Success)
{
Console.WriteLine("Error: Region offset cannot be extracted from filename, the terrain won't be extracted [" + filename + "]");
continue;
}
// Filling some mesh info
TerrainMesh mesh = new TerrainMesh();
mesh.Name = filename;
mesh.OffsetPosY = int.Parse(match.Groups[1].Value, System.Globalization.NumberStyles.HexNumber);
mesh.OffsetPosX = int.Parse(match.Groups[2].Value, System.Globalization.NumberStyles.HexNumber);
// Try to read all vertices from the file
try
{
ReadJMXVNVM1000(path, mesh);
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex);
continue;
}
// Build triangles from vertices like quads/2
var w = mesh.Width - 1;
var h = mesh.Height - 1;
for (int i = 0; i < h; i++)
{
for (int j = 0; j < w; j++)
{
uint a = (uint)((i * mesh.Width) + j);
uint b = a + 1u;
uint c = (uint)(a + mesh.Width);
mesh.Triangles.Add(new uint[] { a, b, c });
mesh.Triangles.Add(new uint[] { b, c, c + 1u });
}
}
// Add generated mesh
terrains.Add(mesh);
}
// Avoid saving an empty terrain
if (terrains.Count == 0)
{
Console.WriteLine("Error: Not enough .nvm files to create terrain!");
return;
}
Console.WriteLine("Generating \"Terraing.obj\"...");
// Make sure the printing format will be right
var en_us = new System.Globalization.CultureInfo("en-us");
using (var fs = new FileStream("Terrain.obj", FileMode.Create, FileAccess.Write))
{
// Generating as a whole object
var buffer = System.Text.Encoding.ASCII.GetBytes("o Terrain" + Environment.NewLine);
await fs.WriteAsync(buffer, 0, buffer.Length);
uint size = 1;
// Apply terrain center
foreach (var mesh in terrains)
{
// Just writes an endline
buffer = System.Text.Encoding.ASCII.GetBytes(Environment.NewLine);
await fs.WriteAsync(buffer, 0, buffer.Length);
// Writing mesh as group
buffer = System.Text.Encoding.ASCII.GetBytes($"g {mesh.Name}_{mesh.OffsetPosY}x{mesh.OffsetPosX}" + Environment.NewLine);
await fs.WriteAsync(buffer, 0, buffer.Length);
foreach (var v in mesh.Vertices)
{
buffer = System.Text.Encoding.ASCII.GetBytes(string.Format(en_us, "v {0} {1} {2}{3}", v.X, v.Y, v.Z, Environment.NewLine));
await fs.WriteAsync(buffer, 0, buffer.Length);
}
foreach (var t in mesh.Triangles)
{
buffer = System.Text.Encoding.ASCII.GetBytes($"f {t[0] + size} {t[1] + size} {t[2] + size}" + Environment.NewLine);
await fs.WriteAsync(buffer, 0, buffer.Length);
}
size += (uint)(mesh.Height * mesh.Width);
}
// Just to know it finishes
Console.WriteLine("\"Terraing.obj\" created successfully!");
}
}