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Diffstat (limited to 'engines/toltecs/palette.cpp')
-rw-r--r-- | engines/toltecs/palette.cpp | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/engines/toltecs/palette.cpp b/engines/toltecs/palette.cpp new file mode 100644 index 0000000000..706218e0ba --- /dev/null +++ b/engines/toltecs/palette.cpp @@ -0,0 +1,231 @@ +/* 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 "graphics/palette.h" + +#include "toltecs/toltecs.h" +#include "toltecs/palette.h" +#include "toltecs/resource.h" + +namespace Toltecs { + +Palette::Palette(ToltecsEngine *vm) : _vm(vm) { + clearFragments(); + + memset(_colorTransTable, 0, sizeof(_colorTransTable)); +} + +Palette::~Palette() { +} + +void Palette::setFullPalette(byte *palette) { + byte colors[768]; + for (int i = 0; i < 256; i++) { + colors[i * 3 + 0] = palette[i * 3 + 0] << 2; + colors[i * 3 + 1] = palette[i * 3 + 1] << 2; + colors[i * 3 + 2] = palette[i * 3 + 2] << 2; + } + _vm->_system->getPaletteManager()->setPalette((const byte *)colors, 0, 256); + _vm->_system->updateScreen(); +} + +void Palette::getFullPalette(byte *palette) { + byte colors[768]; + _vm->_system->getPaletteManager()->grabPalette(colors, 0, 256); + for (int i = 0; i < 256; i++) { + palette[i * 3 + 0] = colors[i * 3 + 0] >> 2; + palette[i * 3 + 1] = colors[i * 3 + 1] >> 2; + palette[i * 3 + 2] = colors[i * 3 + 2] >> 2; + } +} + +void Palette::setDeltaPalette(byte *palette, byte mask, int8 deltaValue, int16 count, int16 startIndex) { + byte colors[768]; + + byte *palPtr = palette + startIndex * 3; + int16 index = startIndex, colorCount = count; + byte rgb; + + count++; + + _vm->_system->getPaletteManager()->grabPalette(colors, 0, 256); + + deltaValue *= -1; + + while (count--) { + rgb = *palPtr++; + if (mask & 1) colors[index * 3 + 0] = CLIP<int>(rgb + deltaValue, 0, 63) << 2; + rgb = *palPtr++; + if (mask & 2) colors[index * 3 + 1] = CLIP<int>(rgb + deltaValue, 0, 63) << 2; + rgb = *palPtr++; + if (mask & 4) colors[index * 3 + 2] = CLIP<int>(rgb + deltaValue, 0, 63) << 2; + index++; + } + + debug(0, "startIndex = %d; colorCount = %d", startIndex, colorCount); + + _vm->_system->getPaletteManager()->setPalette((const byte *)colors, 0, 256); +} + +void Palette::loadAddPalette(uint resIndex, byte startIndex) { + Resource *paletteResource = _vm->_res->load(resIndex); + memcpy(&_mainPalette[startIndex * 3], paletteResource->data, paletteResource->size); +} + +void Palette::loadAddPaletteFrom(byte *source, byte startIndex, byte count) { + memcpy(&_mainPalette[startIndex * 3], source, count * 3); +} + +void Palette::addFragment(uint resIndex, int16 id) { + debug(0, "Palette::addFragment(%d, %d)", resIndex, id); + + Resource *fragmentResource = _vm->_res->load(resIndex); + byte count = fragmentResource->size / 3; + + memcpy(&_mainPalette[_fragmentIndex * 3], fragmentResource->data, count * 3); + + PaletteFragment fragment; + fragment.id = id; + fragment.index = _fragmentIndex; + fragment.count = count; + _fragments.push_back(fragment); + + debug(0, "Palette::addFragment() index = %02X; count = %02X", fragment.index, fragment.count); + + _fragmentIndex += count; +} + +uint16 Palette::findFragment(int16 id) { + debug(0, "Palette::findFragment(%d)", id); + + uint16 result = 0; + for (PaletteFragmentArray::iterator iter = _fragments.begin(); iter != _fragments.end(); iter++) { + PaletteFragment fragment = *iter; + if (fragment.id == id) { + result = (fragment.count << 8) | fragment.index; + break; + } + } + + debug(0, "Palette::findFragment() result = %04X", result); + + return result; +} + +void Palette::clearFragments() { + debug(0, "Palette::clearFragments()"); + _fragmentIndex = 128; + _fragments.clear(); +} + +void Palette::buildColorTransTable(byte limit, int8 deltaValue, byte mask) { + byte r = 0, g = 0, b = 0; + + mask &= 7; + + for (int i = 0; i < 256; i++) { + + if (deltaValue < 0) { + // TODO (probably unused) + warning("Palette::buildColorTransTable(%d, %d, %02X) not yet implemented!", limit, deltaValue, mask); + } else { + r = _mainPalette[i * 3 + 0]; + g = _mainPalette[i * 3 + 1]; + b = _mainPalette[i * 3 + 2]; + if (MAX(r, MAX(b, g)) >= limit) { + if ((mask & 1) && r >= deltaValue) + r -= deltaValue; + if ((mask & 2) && g >= deltaValue) + g -= deltaValue; + if ((mask & 4) && b >= deltaValue) + b -= deltaValue; + } + } + + int bestIndex = 0; + uint16 bestMatch = 0xFFFF; + + for (int j = 0; j < 256; j++) { + byte distance = ABS(_mainPalette[j * 3 + 0] - r) + ABS(_mainPalette[j * 3 + 1] - g) + ABS(_mainPalette[j * 3 + 2] - b); + byte maxColor = MAX(_mainPalette[j * 3 + 0], MAX(_mainPalette[j * 3 + 1], _mainPalette[j * 3 + 2])); + uint16 match = (distance << 8) | maxColor; + if (match < bestMatch) { + bestMatch = match; + bestIndex = j; + } + } + + _colorTransTable[i] = bestIndex; + + } +} + +void Palette::buildColorTransTable2(byte limit, int8 deltaValue, byte mask) { + // TODO +} + +void Palette::saveState(Common::WriteStream *out) { + // Save currently active palette + byte palette[768]; + getFullPalette(palette); + out->write(palette, 768); + + out->write(_mainPalette, 768); + out->write(_animPalette, 768); + out->write(_colorTransTable, 256); + + uint16 fragmentCount = _fragments.size(); + out->writeUint16LE(fragmentCount); + for (PaletteFragmentArray::iterator iter = _fragments.begin(); iter != _fragments.end(); iter++) { + PaletteFragment fragment = *iter; + out->writeUint16LE(fragment.id); + out->writeByte(fragment.index); + out->writeByte(fragment.count); + } + out->writeByte(_fragmentIndex); +} + +void Palette::loadState(Common::ReadStream *in) { + // Save currently active palette + byte palette[768]; + in->read(palette, 768); + setFullPalette(palette); + + in->read(_mainPalette, 768); + in->read(_animPalette, 768); + in->read(_colorTransTable, 256); + + uint16 fragmentCount = in->readUint16LE(); + _fragments.clear(); + for (uint16 i = 0; i < fragmentCount; i++) { + PaletteFragment fragment; + fragment.id = in->readUint16LE(); + fragment.index = in->readByte(); + fragment.count = in->readByte(); + _fragments.push_back(fragment); + } + _fragmentIndex = in->readByte(); +} + + +} // End of namespace Toltecs |