private FileWrapper CreateBMPFile(string filePath, int countX, int countZ)
{
FileWrapper bmpFile = new FileWrapper(filePath);
bmpFile.Clear(); // don't want excess bytes remaining in the new file
bmpFile.WriteShort(0x4d42); // 'B' 'M'
int headerByteSize = 14 + 0x28; // 14 bytes for file header + 0x28 bytes for the data header
int bytesPerPixel = 3; // rgba = 4 bytes per cell, rgb = 3 bytes per cell
int bytesPerRow = countX * bytesPerPixel;
int paddedBytes = GetBMPBytePadding(countX);
bytesPerRow += paddedBytes;
int pixelByteSize = bytesPerRow * countZ;
int totalByteSize = headerByteSize + pixelByteSize;
bmpFile.WriteInt(totalByteSize); // total size of the file in bytes
bmpFile.WriteInt(0); // ignored (usage depends on the program creating the file, which is irrelevant for our purposes)
bmpFile.WriteInt(headerByteSize); // offset to start of the pixel data
// data header
bmpFile.WriteInt(0x28); // length of data header
bmpFile.WriteInt(countX); // image width
bmpFile.WriteInt(countZ); // image height
bmpFile.WriteShort(1); // "number of color planes, must be 1"
bmpFile.WriteShort(bytesPerPixel * 8); // bits per pixel (24 bytes = rgb, 32 bits = rgba)
bmpFile.WriteInt(0); // compression method, 0 = none
bmpFile.WriteInt(pixelByteSize); // total byte size of pixel data
bmpFile.WriteInt(0); // rest of the header has meaning but is ignoreable
bmpFile.WriteInt(0);
bmpFile.WriteInt(0);
bmpFile.WriteInt(0);
// pixel data goes next (handled elsewhere)
return(bmpFile);
}
private void WriteLSGNGRIDFile()
{
string baseFileName = this.ngridFile.GetFolderPath() + this.ngridFile.GetName();
string outputFileName = baseFileName;
if (this.overlayFile != null)
{
outputFileName += "." + this.overlayFile.GetName();
}
FileWrapper outputLSGNGRID = new FileWrapper(outputFileName + ".LSGNGRID");
outputLSGNGRID.Clear(); // don't want excess bytes remaining in the new file
string magic = "LSGNGRID";
outputLSGNGRID.WriteChars(magic.ToCharArray());
outputLSGNGRID.WriteInt(2); // version number
outputLSGNGRID.WriteVector3(minBounds);
outputLSGNGRID.WriteVector3(maxBounds);
outputLSGNGRID.WriteFloat(cellSize);
outputLSGNGRID.WriteInt(cellCountX);
outputLSGNGRID.WriteInt(cellCountZ);
outputLSGNGRID.WriteInt(heightSampleCountX);
outputLSGNGRID.WriteInt(heightSampleCountZ);
outputLSGNGRID.WriteFloat(heightSampleOffsetX);
outputLSGNGRID.WriteFloat(heightSampleOffsetZ);
// height sample data is written first because cells need to use it for calculating their own height values
for (int i = 0; i < heightSamples.Count; i++)
{
float sample = heightSamples[i];
outputLSGNGRID.WriteFloat(sample);
}
for (int i = 0; i < cells.Count; i++)
{
NavGridCell cell = cells[i];
outputLSGNGRID.WriteShort((int)cell.visionPathingFlags);
outputLSGNGRID.WriteByte((int)cell.riverRegionFlags);
int jungleQuadrantAndMainRegionFlags = ((int)cell.jungleQuadrantFlags) | ((int)cell.mainRegionFlags << 4);
outputLSGNGRID.WriteByte(jungleQuadrantAndMainRegionFlags);
int nearestLaneAndPOIFlags = ((int)cell.nearestLaneFlags) | ((int)cell.poiFlags << 4);
outputLSGNGRID.WriteByte(nearestLaneAndPOIFlags);
int ringAndSRXFlags = ((int)cell.ringFlags) | ((int)cell.srxFlags << 4);
outputLSGNGRID.WriteByte(ringAndSRXFlags);
}
outputLSGNGRID.Close();
}
