private static NavGrid ReadData(NavBinaryReader b)
{
var grid = new NavGrid
{
MajorVersion = b.GetBinaryReader().ReadByte()
};
if (grid.MajorVersion != 2)
{
grid.MinorVersion = b.GetBinaryReader().ReadInt16();
}
grid = ReadStandardNavGridHeader(b, grid);
grid.Cells = new NavGridCell[grid.XCellCount * grid.YCellCount];
grid.CellFlags = new ushort[grid.XCellCount * grid.YCellCount];
if (grid.MajorVersion == 0x02 || grid.MajorVersion == 0x03 || grid.MajorVersion == 0x05)
{
// Read cells, total size: 0x38 * XCellCount * YCellCount bytes
for (var i = 0; i < grid.Cells.Length; i++)
{
grid.Cells[i] = b.ReadGridCell_Version5(out grid.CellFlags[i]);
grid.Cells[i].Id = i;
}
grid.XSampledHeightCount = b.GetBinaryReader().ReadInt32();
grid.YSampledHeightCount = b.GetBinaryReader().ReadInt32();
//should be mXSampledHeightDist
grid.DirectionX = b.GetBinaryReader().ReadSingle();
//should be mYSampledHeightDist
grid.DirectionY = b.GetBinaryReader().ReadSingle();
}
else if (grid.MajorVersion == 0x07)
{
// Read cells, total size: 0x30 * XCellCount * YCellCount bytes
for (var i = 0; i < grid.Cells.Length; i++)
{
grid.Cells[i] = b.ReadGridCell_Version7();
grid.Cells[i].Id = i;
}
for (var i = 0; i < grid.Cells.Length; i++)
{
grid.CellFlags[i] = b.GetBinaryReader().ReadUInt16();
}
}
else
{
throw new Exception($"Magic number at the start is unsupported! Value: {grid.MajorVersion:X}");
}
grid.MapWidth = grid.MaxGridPos.X + grid.MinGridPos.X;
grid.MapHeight = grid.MaxGridPos.Z + grid.MinGridPos.Z;
grid.MiddleOfMap = new Vector2(grid.MapWidth / 2, grid.MapHeight / 2);
grid.InitializePathfinding();
return(grid);
}
private static NavGrid ReadStandardNavGridHeader(NavBinaryReader b, NavGrid grid)
{
grid.MinGridPos = b.ReadVector3();
grid.MaxGridPos = b.ReadVector3();
grid.CellSize = b.GetBinaryReader().ReadSingle();
grid.XCellCount = b.GetBinaryReader().ReadUInt32();
grid.YCellCount = b.GetBinaryReader().ReadUInt32();
return(grid);
}
public static NavGrid ReadBinary(byte[] fileBytes)
{
NavBinaryReader b = null;
try
{
b = new NavBinaryReader(new MemoryStream(fileBytes));
}
catch
{
// Ignored
}
return(ReadData(b));
}
public static NavGrid ReadBinary(string filePath)
{
NavBinaryReader b = null;
try
{
b = new NavBinaryReader(File.Open(filePath, FileMode.Open, FileAccess.Read));
}
catch
{
// Ignored
}
return(ReadData(b));
}
