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author | johndoe123 | 2014-04-14 15:49:11 +0200 |
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committer | Eugene Sandulenko | 2018-07-20 06:43:33 +0000 |
commit | e9a443fcd94bdfa10149596d668dafb660ed60e0 (patch) | |
tree | 06cfdcb1a3b447d196110fb7b0c891d0621d97bd /engines/illusions/screen.cpp | |
parent | 097d130e7dd5de95050e800419f4d07aabb7562b (diff) | |
download | scummvm-rg350-e9a443fcd94bdfa10149596d668dafb660ed60e0.tar.gz scummvm-rg350-e9a443fcd94bdfa10149596d668dafb660ed60e0.tar.bz2 scummvm-rg350-e9a443fcd94bdfa10149596d668dafb660ed60e0.zip |
ILLUSIONS: Implement palette shifting and color shadow table
Diffstat (limited to 'engines/illusions/screen.cpp')
-rw-r--r-- | engines/illusions/screen.cpp | 89 |
1 files changed, 80 insertions, 9 deletions
diff --git a/engines/illusions/screen.cpp b/engines/illusions/screen.cpp index 57989e738f..35e8b59271 100644 --- a/engines/illusions/screen.cpp +++ b/engines/illusions/screen.cpp @@ -312,7 +312,7 @@ void Screen::setPalette(byte *colors, uint start, uint count) { *dstPal++ = *colors++; ++colors; } - // TODO Build colorTransTbl + buildColorTransTbl(); _needRefreshPalette = true; } @@ -334,6 +334,42 @@ void Screen::getPalette(byte *colors) { } } +void Screen::shiftPalette(int16 fromIndex, int16 toIndex) { + //debug("shiftPalette(%d, %d)", fromIndex, toIndex); + byte r, g, b; + if (toIndex > fromIndex) { + r = _mainPalette[3 * toIndex + 0]; + g = _mainPalette[3 * toIndex + 1]; + b = _mainPalette[3 * toIndex + 2]; + for (int16 i = toIndex; i > fromIndex; --i) { + byte *dst = &_mainPalette[3 * i]; + byte *src = &_mainPalette[3 * (i - 1)]; + dst[0] = src[0]; + dst[1] = src[1]; + dst[2] = src[2]; + } + _mainPalette[3 * fromIndex + 0] = r; + _mainPalette[3 * fromIndex + 1] = g; + _mainPalette[3 * fromIndex + 2] = b; + } else { + r = _mainPalette[3 * toIndex + 0]; + g = _mainPalette[3 * toIndex + 1]; + b = _mainPalette[3 * toIndex + 2]; + for (int16 i = toIndex + 1; i < fromIndex; +i) { + byte *dst = &_mainPalette[3 * i]; + byte *src = &_mainPalette[3 * (i + 1)]; + dst[0] = src[0]; + dst[1] = src[1]; + dst[2] = src[2]; + } + _mainPalette[3 * fromIndex + 0] = r; + _mainPalette[3 * fromIndex + 1] = g; + _mainPalette[3 * fromIndex + 2] = b; + } + // TODO Refresh colorTransTbl + _needRefreshPalette = true; +} + void Screen::updatePalette() { if (_needRefreshPalette) { // TODO Update fader palette @@ -342,6 +378,30 @@ void Screen::updatePalette() { } } +void Screen::buildColorTransTbl() { + const int cr = _mainPalette[3 * 1 + 0]; + const int cg = _mainPalette[3 * 1 + 1]; + const int cb = _mainPalette[3 * 1 + 2]; + for (int index1 = 0; index1 < 256; ++index1) { + const int dr = (cr + _mainPalette[3 * index1 + 0]) / 2; + const int dg = (cg + _mainPalette[3 * index1 + 1]) / 2; + const int db = (cb + _mainPalette[3 * index1 + 2]) / 2; + int minDistance = 766; + int minIndex2 = 2; + for (int index2 = 2; index2 < 256; ++index2) { + int distance = + ABS(dr - _mainPalette[3 * index2 + 0]) + + ABS(dg - _mainPalette[3 * index2 + 1]) + + ABS(db - _mainPalette[3 * index2 + 2]); + if (distance < minDistance) { + minDistance = distance; + minIndex2 = index2; + } + } + _colorTransTbl[index1] = minIndex2; + } +} + void Screen::drawText(FontResource *font, Graphics::Surface *surface, int16 x, int16 y, uint16 *text, uint count) { for (uint i = 0; i < count; ++i) x += font->_widthC + drawChar(font, surface, x, y, *text++); @@ -456,9 +516,13 @@ void Screen::drawSurface81(int16 destX, int16 destY, Graphics::Surface *surface, byte *src = (byte*)surface->getBasePtr(srcRect.left, srcRect.top + yc); byte *dst = (byte*)_backSurface->getBasePtr(destX, destY + yc); for (int16 xc = 0; xc < w; ++xc) { - byte pixel = *src++; - if (pixel != 0) - *dst = pixel; + const byte pixel = *src++; + if (pixel != 0) { + if (pixel == 1) + *dst = _colorTransTbl[*dst]; + else + *dst = pixel; + } ++dst; } } @@ -485,9 +549,12 @@ void Screen::drawSurface82(Common::Rect &dstRect, Graphics::Surface *surface, Co byte *src = (byte*)surface->getBasePtr(srcRect.left, srcY); byte *dstRow = dst; while (w-- > 0) { - byte pixel = *src; + const byte pixel = *src; if (pixel != 0) { - *dstRow = pixel; + if (pixel == 1) + *dstRow = _colorTransTbl[*dstRow]; + else + *dstRow = pixel; } ++dstRow; src += errXStart; @@ -498,9 +565,13 @@ void Screen::drawSurface82(Common::Rect &dstRect, Graphics::Surface *surface, Co } } while (skipX-- > 0) { - byte pixel = *src; - if (pixel != 0) - *dstRow = pixel; + const byte pixel = *src; + if (pixel != 0) { + if (pixel == 1) + *dstRow = _colorTransTbl[*dstRow]; + else + *dstRow = pixel; + } ++src; ++dstRow; } |