mirror of
https://github.com/libretro/scummvm.git
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535 lines
14 KiB
C++
535 lines
14 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#include "common/scummsys.h"
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#include "engines/util.h"
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#include "graphics/palette.h"
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#include "mads/mads.h"
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#include "mads/msurface.h"
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#include "mads/staticres.h"
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namespace MADS {
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#define VGA_COLOR_TRANS(x) ((x) * 255 / 63)
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void RGB6::load(Common::SeekableReadStream *f) {
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r = VGA_COLOR_TRANS(f->readByte());
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g = VGA_COLOR_TRANS(f->readByte());
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b = VGA_COLOR_TRANS(f->readByte());
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_palIndex = f->readByte();
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_u2 = f->readByte();
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_flags = f->readByte();
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}
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/*------------------------------------------------------------------------*/
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PaletteUsage::PaletteUsage(MADSEngine *vm) {
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_vm = vm;
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_data = nullptr;
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}
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void PaletteUsage::load(Common::Array<UsageEntry> *data) {
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_data = data;
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}
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void PaletteUsage::getKeyEntries(Common::Array<RGB6> &palette) {
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_data->clear();
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for (uint i = 0; i < palette.size(); ++i) {
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byte *uPtr = &palette[i]._flags;
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if ((*uPtr & 0x10) && _data->size() < 3) {
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_data->push_back(UsageEntry(i));
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}
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}
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}
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static bool sortHelper(const PaletteUsage::UsageEntry &ue1, const PaletteUsage::UsageEntry &ue2) {
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return ue1._sortValue < ue2._sortValue;
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}
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void PaletteUsage::prioritize(Common::Array<RGB6> &palette) {
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for (uint i = 0; i < _data->size(); ++i) {
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RGB6 &palEntry = palette[(*_data)[i]._palIndex];
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(*_data)[i]._sortValue = rgbMerge(palEntry);
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}
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Common::sort(_data->begin(), _data->end(), sortHelper);
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}
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static bool rangeSorter(const PaletteUsage::UsageRange &ur1, const PaletteUsage::UsageRange &ur2) {
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return ur1._v2 < ur2._v2;
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}
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int PaletteUsage::process(Common::Array<RGB6> &palette, uint flags) {
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int palLow;
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int palHigh = (flags & 0x800) ? 0x100 : 0xFC;
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int palIdx;
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PaletteUsage tempUsage(_vm);
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Common::Array<UsageEntry> tempUsageData;
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tempUsage.load(&tempUsageData);
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if (flags & 0x4000) {
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palLow = 0;
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palIdx = palHigh;
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} else {
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palLow = _vm->_palette->_lowRange;
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if ((PALETTE_COUNT - _vm->_palette->_highRange) > palHigh) {
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palIdx = palHigh;
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} else {
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palIdx = PALETTE_COUNT - _vm->_palette->_highRange;
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}
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}
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int rgbIndex = _vm->_palette->_rgbList.scan();
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uint32 rgbMask = 1 << rgbIndex;
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bool noUsageFlag = flags & 0x8000;
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bool hasUsage = _data != nullptr;
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bool flag1 = false;
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if (hasUsage) {
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if (noUsageFlag || _data->size() == 0)
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hasUsage = false;
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if (noUsageFlag && _data->size() > 0)
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flag1 = true;
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}
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if (hasUsage) {
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tempUsage.getKeyEntries(palette);
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tempUsage.prioritize(palette);
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}
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int freeIndex;
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int palCount = getGamePalFreeIndex(&freeIndex);
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Common::Array<UsageRange> palRange;
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for (uint palIndex = 0; palIndex < palette.size(); ++palIndex) {
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byte pal2 = palIndex;
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byte pal1 = 0;
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if (!(palette[palIndex]._flags & 0x80)) {
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pal1 = 0x40;
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}
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if (palette[palIndex]._flags & 0x60) {
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pal1 |= 0x20;
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}
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palRange.push_back(UsageRange(pal1, pal2));
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}
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Common::sort(palRange.begin(), palRange.end(), rangeSorter);
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int var3A = (flags & 0x4000) ? 0xffff : 0xfffe;
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for (uint palIndex = 0; palIndex < palette.size(); ++palIndex) {
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bool var48 = false;
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int var4 = 0xffff;
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int v1 = palRange[palIndex]._v2;
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if (palette[v1]._flags & 8) {
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var48 = true;
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var4 = 0xFD;
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}
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if (hasUsage && palette[v1]._flags & 0x10) {
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for (uint usageIndex = 0; usageIndex < tempUsage._data->size() && !var48; ++usageIndex) {
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if ((*tempUsage._data)[usageIndex]._palIndex == palIndex) {
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var48 = true;
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int dataIndex = MIN(usageIndex, _data->size() - 1);
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var4 = (*_data)[dataIndex]._palIndex;
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}
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}
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}
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if (flag1 && palette[palIndex]._flags & 0x10) {
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for (uint usageIndex = 0; usageIndex < _data->size() && !var48; ++usageIndex) {
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if ((*_data)[usageIndex]._palIndex == palIndex) {
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var48 = true;
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var4 = 0xF0 + usageIndex;
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// Copy data into the high end of the main palette
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RGB6 &pSrc = palette[palIndex];
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byte *pDest = &_vm->_palette->_mainPalette[var4 * 3];
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pDest[0] = pSrc.r;
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pDest[1] = pSrc.g;
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pDest[2] = pSrc.b;
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}
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}
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}
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if (!var48 && !noUsageFlag) {
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int var2 = (palette[palIndex]._flags & 0x20) ||
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(((flags & 0x2000) || (palette[palIndex]._flags & 0x4000)) &&
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((flags & 0x1000) || (palCount == 0))) ? 0x7fff : 1;
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int var36 = (palette[palIndex]._flags & 0x80) ? 0 : 2;
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for (int idx = palLow; idx < palIdx; ++idx) {
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uint32 v = _vm->_palette->_palFlags[idx];
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if ((v & var3A) && !(v & var36)) {
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int var10;
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if (var2 > 1) {
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var10 = rgbFactor(&_vm->_palette->_mainPalette[idx * 3], palette[palIndex]);
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}
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else if (_vm->_palette->_mainPalette[idx * 3] != palette[palIndex].r ||
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_vm->_palette->_mainPalette[idx * 3 + 1] != palette[palIndex].g ||
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_vm->_palette->_mainPalette[idx * 3 + 2] != palette[palIndex].b) {
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var10 = 1;
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} else {
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var10 = 0;
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}
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if (var2 > var10) {
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var48 = true;
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var4 = idx;
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var2 = var10;
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}
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}
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}
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}
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if (!var48 && (!(flags & 0x1000) || (!(palette[palIndex]._flags & 0x60) && !(flags & 0x2000)))) {
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for (int idx = freeIndex; idx < palIdx && !var48; ++idx) {
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if (!_vm->_palette->_palFlags[idx]) {
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--palCount;
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++freeIndex;
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var48 = true;
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var4 = idx;
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RGB6 &pSrc = palette[palIndex];
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byte *pDest = &_vm->_palette->_mainPalette[idx * 3];
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pDest[0] = pSrc.r;
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pDest[1] = pSrc.g;
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pDest[2] = pSrc.b;
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}
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}
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}
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assert(var48);
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int var52 = (noUsageFlag && palette[palIndex]._u2) ? 2 : 0;
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_vm->_palette->_palFlags[var4] |= var52 | rgbMask;
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palette[palIndex]._palIndex = var4;
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}
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_vm->_palette->_rgbList[rgbIndex] = true;
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return rgbIndex;
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}
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int PaletteUsage::rgbMerge(RGB6 &palEntry) {
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return ((palEntry.r + 1) / 4 - 1) * 38 + ((palEntry.g + 1) / 4 - 1) * 76 +
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((palEntry.b + 1) / 4 - 1) * 14;
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}
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void PaletteUsage::transform(Common::Array<RGB6> &palette) {
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if (!empty()) {
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for (uint i = 0; i < _data->size(); ++i) {
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int palIndex = (*_data)[i]._palIndex;
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(*_data)[i]._palIndex = palette[palIndex]._palIndex;
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}
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}
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}
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void PaletteUsage::updateUsage(Common::Array<int> &usageList, int sceneUsageIndex) {
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uint32 mask1 = 0xFFFFFFFF;
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uint32 mask2 = 0;
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for (uint idx = 0; idx < usageList.size(); ++idx) {
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uint32 bitMask = 1 << usageList[idx];
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mask1 ^= bitMask;
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mask2 |= bitMask;
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_vm->_palette->_rgbList[usageList[idx]] = false;
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}
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uint32 mask3 = 1 << sceneUsageIndex;
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for (uint idx = 0; idx < PALETTE_COUNT; ++idx) {
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uint32 mask = mask2 & _vm->_palette->_palFlags[idx];
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if (mask) {
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_vm->_palette->_palFlags[idx] = (_vm->_palette->_palFlags[idx] &
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mask1) | mask3;
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}
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}
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_vm->_palette->_rgbList[sceneUsageIndex] = true;
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}
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void PaletteUsage::resetPalFlags(int idx) {
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if (idx >= 0 && idx < 32) {
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uint32 rgbMask = ~(1 << idx);
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uint32 *flagP = _vm->_palette->_palFlags;
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for (int i = 0; i < 256; ++i, ++flagP) {
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*flagP &= rgbMask;
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if (*flagP == 2)
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*flagP = 0;
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}
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_vm->_palette->_rgbList[idx] = 0;
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}
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}
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int PaletteUsage::getGamePalFreeIndex(int *palIndex) {
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*palIndex = -1;
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int count = 0;
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for (int i = 0; i < PALETTE_COUNT; ++i) {
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if (!_vm->_palette->_palFlags[i]) {
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++count;
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if (*palIndex < 0)
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*palIndex = i;
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}
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}
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return count;
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}
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int PaletteUsage::rgbFactor(byte *palEntry, RGB6 &pal6) {
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int total = 0;
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total += (palEntry[0] - pal6.r) * (palEntry[0] - pal6.r);
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total += (palEntry[1] - pal6.g) * (palEntry[1] - pal6.g);
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total += (palEntry[2] - pal6.b) * (palEntry[2] - pal6.b);
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return total;
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}
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/*------------------------------------------------------------------------*/
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void RGBList::clear() {
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for (int i = 0; i < 32; i++)
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_data[i] = false;
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}
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void RGBList::reset() {
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for (int i = 2; i < 32; i++)
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_data[i] = false;
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}
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int RGBList::scan() {
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for (int i = 0; i < 32; ++i) {
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if (!_data[i])
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return i;
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}
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error("RGBList was full");
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}
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/*------------------------------------------------------------------------*/
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Palette::Palette(MADSEngine *vm) : _vm(vm), _paletteUsage(vm) {
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reset();
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_lockFl = false;
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_lowRange = 0;
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_highRange = 0;
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Common::fill(&_mainPalette[0], &_mainPalette[PALETTE_SIZE], 0);
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Common::fill(&_palFlags[0], &_palFlags[PALETTE_COUNT], 0);
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}
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void Palette::setPalette(const byte *colors, uint start, uint num) {
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g_system->getPaletteManager()->setPalette(colors, start, num);
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reset();
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}
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void Palette::setEntry(byte palIndex, byte r, byte g, byte b) {
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_mainPalette[palIndex * 3] = VGA_COLOR_TRANS(r);
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_mainPalette[palIndex * 3 + 1] = VGA_COLOR_TRANS(g);
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_mainPalette[palIndex * 3 + 2] = VGA_COLOR_TRANS(b);
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setPalette((const byte *)&_mainPalette[palIndex * 3], palIndex, 1);
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}
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void Palette::grabPalette(byte *colors, uint start, uint num) {
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g_system->getPaletteManager()->grabPalette(colors, start, num);
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reset();
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}
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uint8 Palette::palIndexFromRgb(byte r, byte g, byte b, byte *paletteData) {
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byte index = 0;
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int32 minDist = 0x7fffffff;
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byte palData[PALETTE_SIZE];
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int Rdiff, Gdiff, Bdiff;
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if (paletteData == NULL) {
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g_system->getPaletteManager()->grabPalette(palData, 0, PALETTE_COUNT);
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paletteData = &palData[0];
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}
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for (int palIndex = 0; palIndex < PALETTE_COUNT; ++palIndex) {
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Rdiff = r - paletteData[palIndex * 3];
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Gdiff = g - paletteData[palIndex * 3 + 1];
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Bdiff = b - paletteData[palIndex * 3 + 2];
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if (Rdiff * Rdiff + Gdiff * Gdiff + Bdiff * Bdiff < minDist) {
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minDist = Rdiff * Rdiff + Gdiff * Gdiff + Bdiff * Bdiff;
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index = (uint8)palIndex;
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}
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}
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return (uint8)index;
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}
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void Palette::reset() {
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}
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void Palette::setGradient(byte *palette, int start, int count, int rgbValue1, int rgbValue2) {
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int rgbCtr = 0;
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int rgbCurrent = rgbValue2;
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int rgbDiff = -(rgbValue2 - rgbValue1);
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if (count > 0) {
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byte *pDest = palette + start * 3;
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int endVal = count - 1;
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int numLeft = count;
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do {
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pDest[0] = pDest[1] = pDest[2] = rgbCurrent;
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if (numLeft > 1) {
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rgbCtr += rgbDiff;
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if (rgbCtr >= endVal) {
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do {
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++rgbCurrent;
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rgbCtr += 1 - numLeft;
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} while (rgbCtr >= endVal);
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}
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}
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pDest += 3;
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} while (--numLeft > 0);
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}
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}
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void Palette::setSystemPalette() {
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byte palData[4 * 3];
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palData[0 * 3] = palData[0 * 3 + 1] = palData[0 * 3 + 2] = 0;
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palData[1 * 3] = palData[1 * 3 + 1] = palData[1 * 3 + 2] = 0x54;
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palData[2 * 3] = palData[2 * 3 + 1] = palData[2 * 3 + 2] = 0xb4;
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palData[3 * 3] = palData[3 * 3 + 1] = palData[3 * 3 + 2] = 0xff;
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setPalette(palData, 0, 4);
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}
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void Palette::resetGamePalette(int lowRange, int highRange) {
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Common::fill((byte *)&_palFlags[0], (byte *)&_palFlags[PALETTE_COUNT], 0);
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initVGAPalette(_mainPalette);
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// Reserve the start of the palette for things like on-screen text
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if (lowRange) {
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Common::fill(&_palFlags[0], &_palFlags[lowRange], 1);
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}
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// Reserve the high end of the palette for dialog display
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if (highRange) {
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Common::fill(&_palFlags[256 - highRange], &_palFlags[256], 1);
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}
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_rgbList.clear();
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_rgbList[0] = _rgbList[1] = true;
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_lockFl = false;
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_lowRange = lowRange;
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_highRange = highRange;
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}
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void Palette::initPalette() {
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uint32 palMask = 1;
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if (_vm->_game->_player._spritesLoaded && _vm->_game->_player._numSprites) {
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for (int idx = 0; idx < _vm->_game->_player._numSprites; ++idx) {
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SpriteAsset *asset = _vm->_game->_scene._sprites[
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_vm->_game->_player._spritesStart + idx];
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uint32 mask = 1;
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if (asset->_usageIndex)
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mask <<= asset->_usageIndex;
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palMask = mask;
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}
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}
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for (int idx = 0; idx < PALETTE_COUNT; ++idx)
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_palFlags[idx] = palMask;
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_lockFl = false;
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_rgbList.reset();
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}
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void Palette::initVGAPalette(byte *palette) {
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byte *destP = palette;
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for (int palIndex = 0; palIndex < 16; ++palIndex) {
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for (int byteCtr = 2; byteCtr >= 0; --byteCtr)
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*destP++ = ((DEFAULT_VGA_PALETTE[palIndex] >> (8 * byteCtr)) & 0xff) >> 2;
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}
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}
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void Palette::setLowRange() {
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_mainPalette[0] = _mainPalette[1] = _mainPalette[2] = VGA_COLOR_TRANS(0);
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_mainPalette[3] = _mainPalette[4] = _mainPalette[5] = VGA_COLOR_TRANS(0x15);
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_mainPalette[6] = _mainPalette[7] = _mainPalette[8] = VGA_COLOR_TRANS(0x2A);
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_mainPalette[9] = _mainPalette[10] = _mainPalette[11] = VGA_COLOR_TRANS(0x3F);
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_vm->_palette->setPalette(_mainPalette, 0, 4);
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}
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void Palette::fadeOut(byte palette[PALETTE_SIZE], int start, int count, int v1, int v2, int v3, int v4, int v5, int v6) {
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warning("TODO: Palette::fadeOut()");
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}
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|
|
|
void Palette::lock() {
|
|
if (_rgbList[31] && !_lockFl)
|
|
error("Palette Lock - Unexpected values");
|
|
|
|
_lockFl = true;
|
|
_rgbList[31] = true;
|
|
|
|
for (int i = 0; i < 256; i++) {
|
|
if (_palFlags[i])
|
|
_palFlags[i] |= 0x80000000;
|
|
}
|
|
}
|
|
|
|
void Palette::unlock() {
|
|
if (!_lockFl)
|
|
return;
|
|
|
|
for (int i = 0; i < 256; i++)
|
|
_palFlags[i] &= 0x7FFFFFFF;
|
|
|
|
_rgbList[31] = false;
|
|
_lockFl = false;
|
|
}
|
|
|
|
void Palette::refreshHighColors() {
|
|
int val = 18;
|
|
if (_vm->_game->_scene._cyclingActive)
|
|
val += _vm->_game->_scene._totalCycleColors;
|
|
|
|
setPalette(_mainPalette, val, 256 - val);
|
|
}
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|
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} // End of namespace MADS
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