internal Lgr(string lgrFile)
{
using (var stream = File.OpenRead(lgrFile))
{
Path = lgrFile;
var lgr = new BinaryReader(stream, Encoding.ASCII);
if (lgr.ReadString(5) != "LGR12")
{
throw new Exception($"The LGR file {lgrFile} is not valid (magic start string not found)");
}
int numberOfPcXs = lgr.ReadInt32();
int picturesLstVersion = lgr.ReadInt32(); // unused
int numberOfOptPcXs = lgr.ReadInt32();
var pcxNames = new List <string>();
var pcxTypes = new List <ImageType>();
var distances = new List <int>();
var clippingTypes = new List <ClippingType>();
var transparencies = new List <Transparency>();
for (int i = 0; i < numberOfOptPcXs; i++)
{
pcxNames.Add(lgr.ReadNullTerminatedString(10));
}
for (int i = 0; i < numberOfOptPcXs; i++)
{
pcxTypes.Add((ImageType)lgr.ReadInt32());
}
for (int i = 0; i < numberOfOptPcXs; i++)
{
distances.Add(lgr.ReadInt32());
}
for (int i = 0; i < numberOfOptPcXs; i++)
{
clippingTypes.Add((ClippingType)lgr.ReadInt32());
}
for (int i = 0; i < numberOfOptPcXs; i++)
{
transparencies.Add((Transparency)lgr.ReadInt32());
}
for (int i = 0; i < numberOfOptPcXs; i++)
{
ListedImages.Add(new ListedImage
{
Name = pcxNames[i].ToLower(),
Type = pcxTypes[i],
Distance = distances[i],
ClippingType = clippingTypes[i],
Transparency = transparencies[i]
});
}
for (int i = 0; i < numberOfPcXs; i++)
{
string lgrImageName = System.IO.Path.GetFileNameWithoutExtension(lgr.ReadNullTerminatedString(12)).ToLower();
var isGrass = lgrImageName == "qgrass";
ImageType imgType = isGrass ? ImageType.Texture : ImageType.Picture;
int imgDistance = 500;
ClippingType imgClippingType = isGrass ? ClippingType.Ground : ClippingType.Unclipped;
var transparency = Transparency.TopLeft;
foreach (ListedImage x in ListedImages)
{
if (x.Name == lgrImageName)
{
imgType = x.Type;
imgClippingType = x.ClippingType;
imgDistance = x.Distance;
if (!TransparencyIgnoreSet.Contains(x.Name))
{
transparency = x.Transparency;
}
}
}
lgr.ReadInt32(); // unknown, not used
lgr.ReadInt32(); // unknown, not used
int sizeOfPcx = lgr.ReadInt32();
Bitmap bmp = new Pcx(stream).ToBitmap();
if (imgType != ImageType.Texture)
{
switch (transparency)
{
case Transparency.NotTransparent:
break;
case Transparency.Palette0:
bmp.MakeTransparent(Color.Black); // TODO get from palette index 0
break;
// If the transparency field value is invalid, we'll assume Transparency.TopLeft as it is the most common case.
default:
// case Transparency.TopLeft:
bmp.MakeTransparent(bmp.GetPixel(0, 0));
break;
case Transparency.TopRight:
bmp.MakeTransparent(bmp.GetPixel(bmp.Width - 1, 0));
break;
case Transparency.BottomLeft:
bmp.MakeTransparent(bmp.GetPixel(0, bmp.Height - 1));
break;
case Transparency.BottomRight:
bmp.MakeTransparent(bmp.GetPixel(bmp.Width - 1, bmp.Height - 1));
break;
}
}
LgrImages.Add(new LgrImage(lgrImageName, bmp, imgType, imgDistance, imgClippingType));
}
}
}
internal Lgr(string lgrFile)
{
byte[] lgrData = File.ReadAllBytes(lgrFile);
if (Encoding.ASCII.GetString(lgrData, 0, 5) != "LGR12")
{
throw (new Exception("The specified LGR file " + lgrFile + " is not valid!"));
}
int numberOfPcXs = BitConverter.ToInt32(lgrData, 5);
int numberOfOptPcXs = BitConverter.ToInt32(lgrData, 13);
for (int i = 0; i < numberOfOptPcXs; i++)
{
ListedImages.Add(new ListedImage
{
Name = Utils.ReadNullTerminatedString(lgrData, i * 10 + 17, 10).ToLower(),
Type =
(ImageType)
BitConverter.ToInt32(lgrData, 17 + numberOfOptPcXs * 10 + i * 4),
Distance = BitConverter.ToInt32(lgrData, 17 + numberOfOptPcXs * 14 + i * 4),
ClippingType =
(ClippingType)
BitConverter.ToInt32(lgrData, 17 + numberOfOptPcXs * 18 + i * 4),
Transparency =
(Transparency)
BitConverter.ToInt32(lgrData, 17 + numberOfOptPcXs * 22 + i * 4)
});
}
int sp = 17 + numberOfOptPcXs * 26;
for (int i = 0; i < numberOfPcXs; i++)
{
string lgrImageName =
Path.GetFileNameWithoutExtension(Utils.ReadNullTerminatedString(lgrData, sp, 12)).ToLower();
var isGrass = lgrImageName == "qgrass";
ImageType imgType = isGrass ? ImageType.Texture : ImageType.Picture;
int imgDistance = 500;
ClippingType imgClippingType = isGrass ? ClippingType.Ground : ClippingType.Unclipped;
var transparency = Transparency.TopLeft;
foreach (ListedImage x in ListedImages)
{
if (x.Name == lgrImageName)
{
imgType = x.Type;
imgClippingType = x.ClippingType;
imgDistance = x.Distance;
if (!TransparencyIgnoreSet.Contains(x.Name))
{
transparency = x.Transparency;
}
}
}
sp += 24;
int sizeOfPcx = BitConverter.ToInt32(lgrData, sp - 4);
byte[] data = new byte[sizeOfPcx];
Array.ConstrainedCopy(lgrData, sp, data, 0, sizeOfPcx);
MemoryStream memStream = new MemoryStream(data);
try
{
Bitmap bmp = new Pcx(memStream).ToBitmap();
if (imgType != ImageType.Texture)
{
switch (transparency)
{
case Transparency.NotTransparent:
break;
case Transparency.Palette0:
bmp.MakeTransparent(Color.Black); // TODO get from palette index 0
break;
// If the transparency field value is invalid, we'll assume Transparency.TopLeft as it is the most common case.
default:
// case Transparency.TopLeft:
bmp.MakeTransparent(bmp.GetPixel(0, 0));
break;
case Transparency.TopRight:
bmp.MakeTransparent(bmp.GetPixel(bmp.Width - 1, 0));
break;
case Transparency.BottomLeft:
bmp.MakeTransparent(bmp.GetPixel(0, bmp.Height - 1));
break;
case Transparency.BottomRight:
bmp.MakeTransparent(bmp.GetPixel(bmp.Width - 1, bmp.Height - 1));
break;
}
}
LgrImages.Add(new LgrImage(lgrImageName, bmp, imgType, imgDistance, imgClippingType));
}
finally
{
memStream.Close();
}
sp += sizeOfPcx;
}
}
