private bool CheckForMCCharsetErrors(Formats.GraphicScreenProject Project, int CharIndexOffset)
{
bool foundError = false;
int blockWidth = ((Project.Image.Width + 7) / 8);
int blockHeight = ((Project.Image.Height + 7) / 8);
for (int j = 0; j < blockHeight; ++j)
{
for (int i = 0; i < blockWidth; ++i)
{
CheckCharBox(Project, m_Chars[CharIndexOffset + i + j * blockWidth], i * 8, j * 8, true);
if (m_Chars[CharIndexOffset + i + j * blockWidth].Error.Length > 0)
{
foundError = true;
}
}
}
if (foundError)
{
return(true);
}
return(false);
}
private bool CheckCharBox(Formats.GraphicScreenProject Project, Formats.CharData cd, int X, int Y, bool CheckForMC)
{
// Match image data
int chosenCharColor = -1;
cd.Replacement = null;
cd.Index = 0;
// clear data
for (int i = 0; i < cd.Tile.Data.Length; ++i)
{
cd.Tile.Data.SetU8At(i, 0);
}
bool isMultiColor = false;
{
// determine single/multi color
bool[] usedColor = new bool[16];
int numColors = 0;
bool hasSinglePixel = false;
bool usedBackgroundColor = false;
for (int y = 0; y < 8; ++y)
{
for (int x = 0; x < 8; ++x)
{
int colorIndex = (int)Project.Image.GetPixel(X + x, Y + y) % 16;
if (colorIndex >= 16)
{
cd.Error = "Color index >= 16";
return(false);
}
if ((x % 2) == 0)
{
if (colorIndex != (int)Project.Image.GetPixel(X + x + 1, Y + y) % 16)
{
// not a double pixel, must be single color then
hasSinglePixel = true;
}
}
if (!usedColor[colorIndex])
{
if (colorIndex == Project.Colors.BackgroundColor)
{
usedBackgroundColor = true;
}
usedColor[colorIndex] = true;
numColors++;
}
}
}
if ((hasSinglePixel) &&
(numColors > 2))
{
cd.Error = "Has single pixel, but more than 2 colors";
return(false);
}
if (numColors > 2)
{
isMultiColor = true;
}
if ((!CheckForMC) &&
(numColors > 2))
{
cd.Error = "Has too many colors";
return(false);
}
if ((!CheckForMC) &&
(numColors == 2) &&
(!usedBackgroundColor))
{
cd.Error = "Uses two colors different from background color";
return(false);
}
if ((hasSinglePixel) &&
(numColors == 2) &&
(!usedBackgroundColor))
{
cd.Error = "Has single pixel, but more than 2 colors different from background color";
return(false);
}
if ((CheckForMC) &&
(!hasSinglePixel) &&
(numColors > 4))
{
cd.Error = "Has more than 4 colors";
return(false);
}
if ((!hasSinglePixel) &&
(numColors == 4) &&
(!usedBackgroundColor))
{
cd.Error = "Has more than 4 colors different from background color";
return(false);
}
int otherColorIndex = 16;
if ((!hasSinglePixel) &&
(numColors == 2) &&
(usedBackgroundColor))
{
for (int i = 0; i < 16; ++i)
{
if ((usedColor[i]) &&
(i != Project.Colors.BackgroundColor))
{
otherColorIndex = i;
break;
}
}
}
if ((hasSinglePixel) ||
(!CheckForMC) ||
((numColors == 2) &&
(usedBackgroundColor) &&
(otherColorIndex < 8)))
//|| ( numColors == 2 ) )
{
// eligible for single color
isMultiColor = false;
int usedFreeColor = -1;
for (int i = 0; i < 16; ++i)
{
if (usedColor[i])
{
if (i != Project.Colors.BackgroundColor)
{
if (usedFreeColor != -1)
{
cd.Error = "More than 1 free color";
return(false);
}
usedFreeColor = i;
}
}
}
if ((hasSinglePixel) &&
(CheckForMC) &&
(numColors == 2) &&
(usedFreeColor >= 8))
{
cd.Error = "Hires char cannot use free color with index " + usedFreeColor;
return(false);
}
for (int y = 0; y < 8; ++y)
{
for (int x = 0; x < 8; ++x)
{
int ColorIndex = (int)Project.Image.GetPixel(X + x, Y + y) % 16;
int BitPattern = 0;
if (ColorIndex != Project.Colors.BackgroundColor)
{
BitPattern = 1;
}
// noch nicht verwendete Farbe
if (BitPattern == 1)
{
chosenCharColor = ColorIndex;
}
cd.Tile.Data.SetU8At(y + x / 8, (byte)(cd.Tile.Data.ByteAt(y + x / 8) | (BitPattern << ((7 - (x % 8))))));
}
}
}
else
{
// multi color
isMultiColor = true;
int usedMultiColors = 0;
int usedFreeColor = -1;
for (int i = 0; i < 16; ++i)
{
if (usedColor[i])
{
if ((i == Project.Colors.MultiColor1) ||
(i == Project.Colors.MultiColor2) ||
(i == Project.Colors.BackgroundColor))
{
++usedMultiColors;
}
else
{
usedFreeColor = i;
}
}
}
if (numColors - usedMultiColors > 1)
{
// only one free color allowed
cd.Error = "More than 1 free color";
return(false);
}
if (usedFreeColor >= 8)
{
cd.Error = "Free color must be of index < 8";
return(false);
}
for (int y = 0; y < 8; ++y)
{
for (int x = 0; x < 4; ++x)
{
int ColorIndex = (int)Project.Image.GetPixel(X + 2 * x, Y + y) % 16;
byte BitPattern = 0;
if (ColorIndex == Project.Colors.BackgroundColor)
{
BitPattern = 0x00;
}
else if (ColorIndex == Project.Colors.MultiColor1)
{
BitPattern = 0x01;
}
else if (ColorIndex == Project.Colors.MultiColor2)
{
BitPattern = 0x02;
}
else
{
// noch nicht verwendete Farbe
chosenCharColor = usedFreeColor;
BitPattern = 0x03;
}
cd.Tile.Data.SetU8At(y + x / 4, (byte)(cd.Tile.Data.ByteAt(y + x / 4) | (BitPattern << ((3 - (x % 4)) * 2))));
}
}
if (usedFreeColor == -1)
{
// only the two multi colors were used, we need to force multi color index though
chosenCharColor = 8;
}
}
}
if (chosenCharColor == -1)
{
chosenCharColor = 0;
}
cd.Tile.CustomColor = chosenCharColor;
if ((isMultiColor) &&
(chosenCharColor < 8))
{
cd.Tile.CustomColor = chosenCharColor + 8;
}
return(true);
}