public LuaArgs write(LuaArgs args)
{
int x = args.GetInt(0);
int y = args.GetInt(1);
if (args.IsNumber(2))
{
var n = args.GetByte(2);
CheckWritable();
if (x >= 0 && x < Image.Width &&
y >= 0 && y < Image.Height)
{
Image[x, y] = n;
}
return(LuaArgs.Empty);
}
else
{
var bytes = args.GetByteString(2);
if (x < 0 || x >= Image.Width ||
y < 0 || y >= Image.Height ||
(x + y * Image.Width + bytes.Length) > Image.Width * Image.Height)
{
throw new LuaError("Write must start and end within the image bounds");
}
CheckWritable();
Image.Write(bytes, 0, bytes.Length, x, y);
return(LuaArgs.Empty);
}
}
public LuaArgs loadTGA(LuaArgs args)
{
try
{
// Load image
Image image;
Palette palette;
if (args.IsString(0))
{
// Load from a string
var bytes = args.GetByteString(0);
using (var stream = new MemoryStream(bytes))
{
image = TGAImage.Decode(stream, m_computer.Memory, out palette);
}
}
else
{
// Load from a stream
var file = args.GetObject <LuaFile>(0);
CheckFileMode(file, "tga", LuaFileOpenMode.Read, LuaFileContentType.Binary);
image = TGAImage.Decode(file.InnerStream, m_computer.Memory, out palette);
}
// Return image
return(new LuaArgs(
new LuaImage(image, m_computer.Memory),
new LuaPalette(palette, m_computer.Memory)
));
}
catch (OutOfMemoryException)
{
throw new LuaError("not enough memory");
}
catch (IOException e)
{
throw new LuaError(e.Message);
}
}
public LuaArgs write(LuaArgs args)
{
if (args.IsNumber(1))
{
int start = args.GetInt(0);
var b = args.GetByte(1);
if (start >= 0 && start < Buffer.Length)
{
Buffer[start] = b;
}
return(LuaArgs.Empty);
}
else
{
int start = args.GetInt(0);
var bytes = args.GetByteString(1);
if (start < 0 || start + bytes.Length > Buffer.Length)
{
throw new LuaError("Write must start and end within the buffer");
}
Buffer.Write(start, bytes);
return(LuaArgs.Empty);
}
}