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Diffstat (limited to 'engines/kyra/graphics/screen_hof.cpp')
| -rw-r--r-- | engines/kyra/graphics/screen_hof.cpp | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/engines/kyra/graphics/screen_hof.cpp b/engines/kyra/graphics/screen_hof.cpp new file mode 100644 index 0000000000..a3ab811cdb --- /dev/null +++ b/engines/kyra/graphics/screen_hof.cpp @@ -0,0 +1,96 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#include "kyra/graphics/screen_hof.h" +#include "kyra/engine/kyra_hof.h" + +namespace Kyra { + +Screen_HoF::Screen_HoF(KyraEngine_HoF *vm, OSystem *system) + : Screen_v2(vm, system, _screenDimTable, _screenDimTableCount), _vm(vm) { +} + +void Screen_HoF::generateGrayOverlay(const Palette &srcPal, uint8 *grayOverlay, int factor, int addR, int addG, int addB, int lastColor, bool flag) { + Palette tmpPal(lastColor); + + for (int i = 0; i != lastColor; i++) { + if (flag) { + int v = ((((srcPal[3 * i] & 0x3F) + (srcPal[3 * i + 1] & 0x3F) + + (srcPal[3 * i + 2] & 0x3F)) / 3) * factor) / 0x40; + tmpPal[3 * i] = tmpPal[3 * i + 1] = tmpPal[3 * i + 2] = v & 0xFF; + } else { + int v = (((srcPal[3 * i] & 0x3F) * factor) / 0x40) + addR; + tmpPal[3 * i] = (v > 0x3F) ? 0x3F : v & 0xFF; + v = (((srcPal[3 * i + 1] & 0x3F) * factor) / 0x40) + addG; + tmpPal[3 * i + 1] = (v > 0x3F) ? 0x3F : v & 0xFF; + v = (((srcPal[3 * i + 2] & 0x3F) * factor) / 0x40) + addB; + tmpPal[3 * i + 2] = (v > 0x3F) ? 0x3F : v & 0xFF; + } + } + + for (int i = 0; i < lastColor; i++) + grayOverlay[i] = findLeastDifferentColor(tmpPal.getData() + 3 * i, srcPal, 0, lastColor); +} + +void Screen_HoF::cmpFadeFrameStep(int srcPage, int srcW, int srcH, int srcX, int srcY, int dstPage, int dstW, + int dstH, int dstX, int dstY, int cmpW, int cmpH, int cmpPage) { + + if (!cmpW || !cmpH) + return; + + int r1, r2, r3, r4, r5, r6; + + int X1 = srcX; + int Y1 = srcY; + int W1 = cmpW; + int H1 = cmpH; + + if (!calcBounds(srcW, srcH, X1, Y1, W1, H1, r1, r2, r3)) + return; + + int X2 = dstX; + int Y2 = dstY; + int W2 = W1; + int H2 = H1; + + if (!calcBounds(dstW, dstH, X2, Y2, W2, H2, r4, r5, r6)) + return; + + const uint8 *src = getPagePtr(srcPage) + srcW * (Y1 + r5); + uint8 *dst = getPagePtr(dstPage) + dstW * (Y2 + r2); + const uint8 *cmp = getPagePtr(cmpPage); + + while (H2--) { + const uint8 *s = src + r4 + X1; + uint8 *d = dst + r1 + X2; + + for (int i = 0; i < W2; i++) { + int ix = (*s++ << 8) + *d; + *d++ = cmp[ix]; + } + + src += W1; + dst += W2; + } +} + +} // End of namespace Kyra |