public Nametable(ChrMapper mapper)
{
this.bitmap = new PaletteBitmap(screenWidth * 8u, screenHeight * 8u);
this.mapper = mapper;
this.ppuAddr = 0x0000;
this.SetDirection(AccessDirection.Horizontal);
bitmap.AddColor(0x00000000); // Transparent
}
private void GenerateTile(PaletteBitmap bitmap, ChrMapper mapper, uint row, uint col, byte tile)
{
for (uint tileY = 0; tileY < 8; tileY++)
{
uint drawY = (uint)(row * 8 + tileY);
for (uint tileX = 0; tileX < 8; tileX++)
{
uint drawX = col * 8 + tileX;
byte color = mapper.GetPixel(tile, tileX, tileY);
bitmap.SetPixel(drawX, drawY, (byte)(color + 1));
}
}
}
private IVisualization2d GenerateBitmap(ReadOnlyDictionary <string, object> parms)
{
int tileoffset = Util.GetFromObjDict(parms, P_TILEOFFSET, 0);
int width = Util.GetFromObjDict(parms, P_WIDTH, 1);
int height = Util.GetFromObjDict(parms, P_HEIGHT, 1);
int chroffset = Util.GetFromObjDict(parms, P_CHROFFSET, 0);
int chipoffset = Util.GetFromObjDict(parms, P_CHIPOFFSET, 0);
int chrbank1 = Util.GetFromObjDict(parms, P_CHRBANK1, 0);
int chrbank2 = Util.GetFromObjDict(parms, P_CHRBANK2, 1);
int chrbank3 = Util.GetFromObjDict(parms, P_CHRBANK3, 2);
int chrbank4 = Util.GetFromObjDict(parms, P_CHRBANK4, 3);
int palette1 = Util.GetFromObjDict(parms, P_PALETTE1, 0x0F);
int palette2 = Util.GetFromObjDict(parms, P_PALETTE2, 0x00);
int palette3 = Util.GetFromObjDict(parms, P_PALETTE3, 0x10);
int palette4 = Util.GetFromObjDict(parms, P_PALETTE4, 0x30);
bool vertical = Util.GetFromObjDict(parms, P_VERTICAL, false);
int[] bank = new int[4] {
chrbank1, chrbank2, chrbank3, chrbank4
};
int[] palette = new int[4] {
palette1, palette2, palette3, palette4
};
ChrMapper mapper = null;
// Check parameters.
try{
{ // tile
int lastAddress = tileoffset + width * height - 1;
if ((tileoffset < 0) || (lastAddress >= this.mFileData.Length))
{
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
}
{ // bank
int lastAddress = chroffset + 0x03FF; // chr = [0, 0, 0, 0] -> 0x1000 / 4 - 1 = 0x03FF
if ((chroffset < 0) || (lastAddress >= this.mFileData.Length))
{
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
}
// palette
for (int i = 0; i < palette.Length; i++)
{
int color = palette[i];
if (color >= NesPalette.Length)
{
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
}
// Copy CHR data.
mapper = new ChrMapper(this.mFileData, chroffset, bank);
}
catch {
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
// Set palette.
PaletteBitmap bitmap = new PaletteBitmap((uint)(width * 8), (uint)(height * 8));
bitmap.AddColor(0x00000000); // Transparent
for (int i = 0; i < palette.Length; i++)
{
int index = palette[i];
if (index >= 0)
{
UInt32 color = 0xFF000000U | (UInt32)NesPalette[index];
bitmap.AddColor((int)color); // ARGB
}
else
{
bitmap.AddColor(0x00000000); // Transparent
}
}
// Convert to pixels.
for (int row = 0; row < height; row++)
{
for (int col = 0; col < width; col++)
{
int address;
if (!vertical)
{
// Horizontal
address = tileoffset + (row * width) + col;
}
else
{
// Vertical
address = tileoffset + (col * height) + row;
}
byte tile = (byte)(this.mFileData[address] + chipoffset);
this.GenerateTile(bitmap, mapper, (uint)row, (uint)col, tile);
}
}
return(bitmap.Bitmap);
}
private IVisualization2d GenerateBitmap(ReadOnlyDictionary <string, object> parms)
{
int tileoffset = Util.GetFromObjDict(parms, P_DATAOFFSET, 0);
int chroffset = Util.GetFromObjDict(parms, P_CHROFFSET, 0);
int chrbank1 = Util.GetFromObjDict(parms, P_CHRBANK1, 0);
int chrbank2 = Util.GetFromObjDict(parms, P_CHRBANK2, 1);
int chrbank3 = Util.GetFromObjDict(parms, P_CHRBANK3, 2);
int chrbank4 = Util.GetFromObjDict(parms, P_CHRBANK4, 3);
int palette1 = Util.GetFromObjDict(parms, P_PALETTE1, 0x0F);
int palette2 = Util.GetFromObjDict(parms, P_PALETTE2, 0x00);
int palette3 = Util.GetFromObjDict(parms, P_PALETTE3, 0x10);
int palette4 = Util.GetFromObjDict(parms, P_PALETTE4, 0x30);
int[] bank = new int[4] {
chrbank1, chrbank2, chrbank3, chrbank4
};
int[] palette = new int[4] {
palette1, palette2, palette3, palette4
};
ChrMapper mapper = null;
// Check parameters.
try{
{ // bank
int lastAddress = chroffset + 0x03FF; // chr = [0, 0, 0, 0] -> 0x1000 / 4 - 1 = 0x03FF
if ((chroffset < 0) || (lastAddress >= this.mFileData.Length))
{
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
}
// palette
for (int i = 0; i < palette.Length; i++)
{
int color = palette[i];
if (color >= Nes.Palette.Length)
{
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
}
// Copy CHR data.
mapper = new ChrMapper(this.mFileData, chroffset, bank);
}
catch {
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
// Create virtual nametable.
Nametable nametable = new Nametable(mapper);
// Set palette.
for (int i = 0; i < palette.Length; i++)
{
nametable.AddColor(palette[i]);
}
// Convert to pixels.
try{
int index = tileoffset;
while (true)
{
byte addrHigh = this.mFileData[index++];
if ((addrHigh == 0x00) || (addrHigh >= 0x80)) // Invalid address
{
break;
}
byte addrLow = this.mFileData[index++];
byte length = this.mFileData[index++];
bool isVertical = (length & 0x80) != 0;
bool isSolid = (length & 0x40) != 0;
int writeLength = (length & 0x3F);
int addr = (addrHigh << 8) | addrLow;
Nametable.AccessDirection direction = (isVertical)? Nametable.AccessDirection.Vertical : Nametable.AccessDirection.Horizontal;
nametable.SetAddress((UInt16)addr);
nametable.SetDirection(direction);
if (!isSolid)
{
for (int i = 0; i < writeLength; i++)
{
byte value = this.mFileData[index++];
nametable.Write(value);
}
}
else
{
byte value = this.mFileData[index++];
for (int i = 0; i < writeLength; i++)
{
nametable.Write(value);
}
}
}
}
catch {
this.mAppRef.ReportError("Invalid parameter");
return(null);
}
return(nametable.Bitmap);
}
