public VgaSpriteBlock(DaxFileBlock block)
{
setBlockId(block.Id);
var data = block.Data;
var origData = data;
int height = data[0];
int width = data[2];
var widthPx = width * 8;
var heightPx = height;
int frames = data[8];
int clrBase = data[9];
int clrCount = data[10];
var picSize = widthPx * heightPx;
var isSpriteFile = false;
var clrs = EgaVgaPalette.ExtractPalette(origData, clrCount, clrBase, 11);
var dataStart = (clrCount * 3) + 132 + (3 * frames);
if (block.FileNameUpperCase.StartsWith("SPRIT"))
{
clrs[0] = Color.FromArgb(0);
clrs[13] = Color.FromArgb(0, 0, 0);
isSpriteFile = true;
if (clrBase == 176 && clrCount == 80)
{
dataStart = 306;
}
}
data = UnpackSpriteData(data, dataStart);
var frameCount = data.Length / picSize;
int mframe = origData[(clrCount * 3) + 132 - 5];
if (isSpriteFile)
{
mframe = frameCount - 1;
}
for (var frame = 0; frame < frameCount; frame++)
{
var bitmap = new Bitmap(widthPx, heightPx, System.Drawing.Imaging.PixelFormat.Format16bppArgb1555);
for (var y = 0; y < heightPx; y++)
{
for (var x = 0; x < widthPx; x += 1)
{
var b1 = data[(y * widthPx) + x + (picSize * frame)];
var b3 = data[(y * widthPx) + x + (picSize * mframe)];
bitmap.SetPixel(x, y, frame != mframe ? clrs[b1 ^ b3] : clrs[b1]);
}
}
Bitmaps.Add(bitmap);
}
}
public VgaBlock(DaxFileBlock block)
{
setBlockId(block.Id);
var data = block.Data;
int height = data[0];
int width = data[1];
const int xPos = 0;
const int yPos = 0;
var widthPx = width * 8;
var heightPx = height;
const int xPosPx = xPos * 8;
const int yPosPx = yPos * 8;
int clrBase = data[8];
int clrCount = data[9] + 1;
var paletteEnd = 10 + (clrCount * 3);
var chunkSize = (widthPx * heightPx);
var chunkCount = ArrayToUshort(data, 6);
var dataStart = data.Length - (chunkCount * chunkSize);
for (var chunk = 0; chunk < chunkCount; chunk++, dataStart += chunkSize)
{
var clrs = EgaVgaPalette.ExtractPalette(data, clrCount, clrBase, 10);
if (clrs == null)
{
return;
}
var bitmap = new Bitmap((widthPx + xPosPx), (heightPx + yPosPx), PixelFormat.Format16bppArgb1555);
for (var y = 0; y < heightPx; y++)
{
for (var x = 0; x < widthPx; x += 1)
{
var b = data[dataStart + (y * widthPx) + x];
var pxX = (x + 0 + xPosPx);
var pxY = (y + yPosPx);
bitmap.SetPixel(pxX, pxY, clrs[b]);
}
}
Bitmaps.Add(bitmap);
}
}
public VgaStrataBlock(DaxFileBlock block)
{
setBlockId(block.Id);
var data = block.Data;
int height = ArrayToUshort(data, 0);
int width = ArrayToUshort(data, 2);
int xPos = ArrayToUshort(data, 4);
int yPos = ArrayToUshort(data, 6);
int picCount = data[8];
var widthPx = width * 8;
var heightPx = height;
var pxlClrs = new int[heightPx, widthPx];
var xPosPx = xPos * 8;
var yPosPx = yPos * 8;
var tempPalette = new byte[59];
var dataOffset = GetDataOffset(tempPalette, 9, data);
var dd = new int[48];
const int paletteBase = 0x20;
for (var i = 0; i < 24; i++)
{
var b = tempPalette[paletteBase + i];
dd[0 + i] = (b & 0x0f) * 4;
dd[24 + i] = (b & 0xf0) / 4;
}
var egaPalette = EgaVgaPalette.PaletteBase();
for (var i = 0; i < 14; i += 1)
{
var r = dd[(i * 3) + 6 + 0];
var g = dd[(i * 3) + 6 + 1];
var b = dd[(i * 3) + 6 + 2];
egaPalette[i + 18] = Color.FromArgb(r * 4, g * 4, b * 4);
}
for (int pic = 0; pic < picCount; pic++)
{
var inOffset = dataOffset;
for (var y = 0; y < height; y++)
{
for (var x = 0; x < widthPx; x++)
{
var mask = 0x80 >> (x & 7);
var inputByte = x / 8;
byte pxClr = 0;
if ((data[inOffset + inputByte] & mask) != 0)
{
pxClr = 1;
}
if ((data[inOffset + inputByte + width] & mask) != 0)
{
pxClr += 2;
}
if ((data[inOffset + inputByte + (width * 2)] & mask) != 0)
{
pxClr += 4;
}
if ((data[inOffset + inputByte + (width * 3)] & mask) != 0)
{
pxClr += 8;
}
if ((data[inOffset + inputByte + (width * 4)] & mask) != 0)
{
pxClr += 0x10;
}
pxlClrs[y, x] = pxClr;
}
inOffset += width * 5;
}
dataOffset = inOffset;
var bitmap = new Bitmap(widthPx + xPosPx, heightPx + yPosPx, System.Drawing.Imaging.PixelFormat.Format16bppArgb1555);
for (var y = 0; y < heightPx; y++)
{
for (var x = 0; x < widthPx; x += 1)
{
var pxX = x + xPosPx;
var pxY = y + yPosPx;
bitmap.SetPixel(pxX, pxY, egaPalette[pxlClrs[y, x]]);
}
}
Bitmaps.Add(bitmap);
}
}
public bool IsSatisfiedBy(DaxFileBlock block)
{
var data = block.Data;
var origData = data;
if (data.Length < 20)
{
return(false);
}
if (data[1] != 0)
{
return(false);
}
int height = data[0];
int width = data[2];
var widthPx = width * 8;
var heightPx = height;
if (widthPx < 1 || heightPx < 1 || widthPx > 320 || heightPx > 200)
{
return(false);
}
int frames = data[8];
int clrBase = data[9];
int clrCount = data[10];
if (clrBase == 0)
{
return(false);
}
if (clrCount == 0)
{
return(false);
}
var dataStart = (clrCount * 3) + 132 + (3 * frames);
if (block.FileNameUpperCase.StartsWith("SPRIT") && clrBase == 176 && clrCount == 80)
{
dataStart = 306;
}
data = UnpackSpriteData(data, dataStart);
if (data.Length <= 0)
{
return(false);
}
var picSize = widthPx * heightPx;
if (picSize <= 0)
{
return(false);
}
if (data.Length % picSize != 0)
{
return(false);
}
var frameCount = data.Length / picSize;
if (picSize * frameCount > data.Length)
{
return(false);
}
var clrs = EgaVgaPalette.ExtractPalette(origData, clrCount, clrBase, 11);
if (clrs == null)
{
return(false);
}
return(true);
}
