/// <summary>
/// Updates the lump data offsets in the lump headers. Must be called when any lump's data size has changed.
/// </summary>
private void UpdateLumpDataOffsets()
{
var pos = VBSPHeaderSize;
foreach (var lump in Lumps.OrderBy(lump => lump.DataOrder))
{
// Notify the lump about us updating the offsets.
// This is necessary for the GameLump which for some dumb reason has absolute file offsets and not local offsets
lump.UpdateOffsets(pos);
lump.Offset = pos;
pos = Util.RoundUp(pos + lump.Data.Length, 4); // Lumps should appear on int boundaries in the BSP file
}
}
/// <summary>
/// Writes the BSP header and lump data using a BinaryWriter stream
/// </summary>
/// <param name="writer">The BinaryWriter stream</param>
public void WriteBSP(BinaryWriter writer)
{
UpdateLumpDataOffsets();
// Write header
writer.Write(VBSP);
writer.Write(Version);
foreach (var lump in Lumps)
{
lump.WriteHeader(writer);
}
writer.Write(Revision);
// Write lump contents
foreach (var lump in Lumps.OrderBy(lump => lump.Offset))
{
writer.Seek(lump.Offset, SeekOrigin.Begin);
lump.WriteData(writer);
}
}
