public object Load(Stream stream, string assetName)
{
Palette pal = new Palette();
if (!pal.Load(stream))
return null;
stream.Close();
return pal;
}
public void SetPalette(Palette palette)
{
_palette = palette;
RecreatePalImages();
}
public bool Load(Stream stream)
{
BinaryReader reader = new BinaryReader(stream);
byte[] magic = reader.ReadBytes(2);
if (magic[0] != (byte)'S' || magic[1] != (byte)'P')
{
return false;
}
_version = reader.ReadInt16();
if (_version != 0x100 && _version != 0x101 &&
_version != 0x200 && _version != 0x201)
{
return false;
}
_palCount = reader.ReadInt16();
if (_version >= 0x200)
_rgbaCount = reader.ReadInt16();
_palData = new byte[_palCount][];
_images = new Texture2D[_palCount + _rgbaCount];
if (_palCount > 0)
{
for (int p = 0; p < _palCount; p++)
{
ushort w = reader.ReadUInt16();
ushort h = reader.ReadUInt16();
int pixelCount = w * h;
if (pixelCount > 0)
{
byte[] data;
if (_version >= 0x201)
{
data = new byte[pixelCount];
uint next = 0;
ushort encoded;
encoded = reader.ReadUInt16();
while (next < pixelCount && encoded > 0)
{
byte c = reader.ReadByte();
encoded--;
if (c == 0)
{
byte len = reader.ReadByte();
encoded--;
if (len == 0)
len = 1;
if (next + len > pixelCount)
return false;
for (int i = 0; i < len; i++)
data[next] = 0;
next += len;
}
else
{
data[next++] = c;
}
}
if (next != pixelCount || encoded > 0)
return false;
}
else
{
data = reader.ReadBytes(pixelCount);
}
_palData[p] = data;
_images[p] = new Texture2D(_graphicsDevice, w, h, false, SurfaceFormat.Color);
}
}
}
if (_rgbaCount > 0)
{
for (int p = 0; p < _rgbaCount; p++)
{
ushort w = reader.ReadUInt16();
ushort h = reader.ReadUInt16();
byte[] texData = reader.ReadBytes(w * h * 4);
Texture2D tex = new Texture2D(_graphicsDevice, w, h, false, SurfaceFormat.Color);
tex.SetData(texData);
_images[_palCount + p] = tex;
}
}
if (_version >= 0x101)
{
Palette pal = new Palette();
pal.Load(stream);
SetPalette(pal);
}
return true;
}
