// Read tileset represented by Outpost 2 specific format into memory
// After Reading into memory, reformats into standard 8 bit indexed bitmap before returning results
public static BitmapFile ReadCustomTileset(Stream streamToRead)
{
using (BinaryReader reader = new BinaryReader(streamToRead, System.Text.Encoding.UTF8, true))
{
SectionHeader fileSignature = new SectionHeader(reader);
ValidateFileSignatureHeader(fileSignature);
TilesetHeader tilesetHeader = new TilesetHeader(reader);
tilesetHeader.Validate();
PpalHeader ppalHeader = new PpalHeader(reader);
ppalHeader.Validate();
SectionHeader paletteHeader = new SectionHeader(reader);
ValidatePaletteHeader(paletteHeader);
BitmapFile bitmapFile = new BitmapFile((ushort)tilesetHeader.bitDepth, tilesetHeader.pixelWidth, (int)tilesetHeader.pixelHeight * -1);
for (int i = 0; i < bitmapFile.palette.Length; ++i)
{
bitmapFile.palette[i] = new Color(reader);
}
SectionHeader pixelHeader = new SectionHeader(reader);
ValidatePixelHeader(pixelHeader, tilesetHeader.pixelHeight);
reader.Read(bitmapFile.pixels, 0, bitmapFile.pixels.Length);
// Tilesets store red and blue Color values swapped from standard Bitmap file format
bitmapFile.SwapRedAndBlue();
ValidateTileset(bitmapFile);
return(bitmapFile);
}
}
// Write tileset in Outpost 2's custom bitmap format.
// To write tileset in standard bitmap format, use BitmapFile::WriteIndexed
public static void WriteCustomTileset(Stream streamToWrite, BitmapFile tileset)
{
tileset = tileset.Clone();
ValidateTileset(tileset);
// OP2 Custom Tileset assumes a positive height and TopDown Scan Line (Contradicts Windows Bitmap File Format)
if (tileset.GetScanLineOrientation() == ScanLineOrientation.BottomUp)
{
tileset.InvertScanLines();
}
uint absoluteHeight = (uint)tileset.AbsoluteHeight();
SectionHeader fileSignature = new SectionHeader(TagFileSignature, CalculatePbmpSectionSize(absoluteHeight));
TilesetHeader tilesetHeader = TilesetHeader.Create(absoluteHeight / TilesetHeader.DefaultPixelHeightMultiple);
PpalHeader ppalHeader = PpalHeader.Create();
SectionHeader paletteHeader = new SectionHeader(TilesetCommon.DefaultTagData, TilesetCommon.DefaultPaletteHeaderSize);
SwapPaletteRedAndBlue(tileset.palette);
SectionHeader pixelHeader = new SectionHeader(TilesetCommon.DefaultTagData, CalculatePixelHeaderLength(absoluteHeight));
using (BinaryWriter writer = new BinaryWriter(streamToWrite, System.Text.Encoding.UTF8, true))
{
fileSignature.Serialize(writer);
tilesetHeader.Serialize(writer);
ppalHeader.Serialize(writer);
paletteHeader.Serialize(writer);
for (int i = 0; i < tileset.palette.Length; ++i)
{
tileset.palette[i].Serialize(writer);
}
pixelHeader.Serialize(writer);
writer.Write(tileset.pixels);
}
}
