public DrSprFrame(Stream s, SprHeader sph, SprFrameInfo info)
{
Type = SpriteFrameType.Indexed;
var picindex = info.A * sph.Nrots + info.R;
var readInt = new Func <int, int>((off) =>
{
s.Position = off;
return(s.ReadInt32());
});
var picnr = readInt(HeaderSize + picindex * 4);
if (picnr >= sph.Npics)
{
throw new Exception("Pic number was greater or equal to number of pics.");
}
var picoff = readInt(sph.OffPicoffs + 8 * picnr);
var nextpicoff = readInt(sph.OffPicoffs + 8 * (picnr + 1));
var start = s.Position;
s.Position = sph.OffBits + picoff;
var tempData = s.ReadBytes(nextpicoff - picoff);
Data = new byte[(sph.Szx + 2) * sph.Szy];
var pixindex = new Func <int, int, int>((x, y) =>
{
int vr = (y * sph.Szx) + x;
return(vr);
});
var curr = 0;
for (var l = 0; l < sph.Szy; ++l)
{
int step = 0, currx = 0, cnt, i;
while (currx < sph.Szx)
{
cnt = tempData[curr++];
if ((step & 1) != 0)
{
cnt &= 0x7f;
}
if ((step & 1) != 0)
{
if (!sph.IsShadow)
{
for (i = 0; i < cnt; ++i, ++curr)
{
int newIndex = pixindex(currx + i, l);
Data[newIndex] = tempData[curr];
}
}
else
{
for (i = 0; i < cnt; ++i)
{
int newIndex = pixindex(currx + i, l);
Data[newIndex] = 47;
}
}
}
currx += cnt;
++step;
}
if (currx != sph.Szx)
{
throw new Exception("Current x was not equal to the line size.");
}
}
Offset = new float2(0, 0);
FrameSize = new Size(sph.Szx, sph.Szy);
Size = FrameSize;
s.Position = start;
}
DrSprFrame[] ParseFrames(Stream s, out TypeDictionary metadata)
{
var start = s.Position;
metadata = new TypeDictionary();
var frames = new List <DrSprFrame>();
for (int sect = 0; sect < header.Nsects; ++sect)
{
s.Position = header.OffSections + 16 * sect;
var firstanim = s.ReadInt32();
var lastanim = s.ReadInt32();
s.ReadInt32(); // Framerate
var numhotspots = s.ReadInt32();
var bmp_szx = header.Szx * header.Nrots;
var bmp_szy = header.Szy * (lastanim - firstanim + 1);
var rotOffset = 0;
if (header.Nrots >= 4)
{
rotOffset = header.Nrots / 4;
}
for (var r = 0; r < header.Nrots; ++r)
{
var newR = r + rotOffset;
if (newR >= header.Nrots)
{
newR -= header.Nrots;
}
for (var a = firstanim; a <= lastanim; ++a)
{
var sfi = new SprFrameInfo()
{
A = a,
R = newR,
S = sect,
BmpSzx = bmp_szx,
BmpSzy = bmp_szy,
Lastanim = lastanim
};
var frame = new DrSprFrame(s, header, sfi);
frames.Add(frame);
}
}
if (numhotspots > 0)
{
int off_hotspots, h;
s.Seek(header.OffPicoffs + 8 * header.Npics, SeekOrigin.Begin);
off_hotspots = header.OffBits;
for (h = 0; h < numhotspots; ++h)
{
int frameindex = 0;
for (int r = 0; r < header.Nrots; ++r)
{
for (int a = firstanim; a <= lastanim; ++a)
{
int picindex = a * header.Nrots + r;
var read_int = new Func <int, int>((off) =>
{
s.Position = off;
return(s.ReadInt32());
});
int headersize = 32;
int picnr = read_int(headersize + picindex * 4);
int hotoff = read_int(header.OffPicoffs + 8 * picnr + 4);
s.Position = off_hotspots + 4 + 3 * (hotoff + h);
byte hx = s.ReadUInt8();
byte hy = s.ReadUInt8();
metadata.Add(new DrFrameMetadata()
{
Hotspot = new int2(hx, hy),
FrameIndex = frameindex
});
frameindex++;
}
}
}
}
}
s.Position = start;
return(frames.ToArray());
}
