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Diffstat (limited to 'engines/access/screen.cpp')
| -rw-r--r-- | engines/access/screen.cpp | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/engines/access/screen.cpp b/engines/access/screen.cpp new file mode 100644 index 0000000000..970a8f3079 --- /dev/null +++ b/engines/access/screen.cpp @@ -0,0 +1,369 @@ +/* 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 "common/algorithm.h" +#include "common/endian.h" +#include "common/rect.h" +#include "common/textconsole.h" +#include "common/system.h" +#include "graphics/palette.h" +#include "access/access.h" +#include "access/screen.h" +#include "access/resources.h" + +namespace Access { + +#define VGA_COLOR_TRANS(x) ((x) * 255 / 63) + +Screen::Screen(AccessEngine *vm) : _vm(vm) { + create(320, 200); + Common::fill(&_tempPalette[0], &_tempPalette[PALETTE_SIZE], 0); + Common::fill(&_manPal[0], &_manPal[0x60], 0); + Common::fill(&_scaleTable1[0], &_scaleTable1[256], 0); + Common::fill(&_scaleTable2[0], &_scaleTable2[256], 0); + _savedPaletteCount = 0; + if (_vm->isCD()) + _vesaMode = 0; + else + _vesaMode = 1; + + _vesaCurrentWin = 0; + _currentPanel = 0; + _hideFlag = true; + _startColor = _numColors = 0; + _windowXAdd = _windowYAdd = 0; + _screenYOff = 0; + _screenChangeFlag = false; + + _bufferBytesWide = _vWindowBytesWide = this->w; + _vWindowLinesTall = this->h; + _vWindowWidth = _vWindowHeight = 0; + _clipWidth = _vWindowBytesWide - 1; + _clipHeight = _vWindowLinesTall - 1; + _startCycle = 0; + _cycleStart = 0; + _endCycle = 0; +} + +void Screen::clearScreen() { + clearBuffer(); + if (_vesaMode) + _vm->_clearSummaryFlag = true; + + addDirtyRect(Common::Rect(0, 0, this->w, this->h)); +} + +void Screen::setDisplayScan() { + _clipWidth = this->w - 1; + _clipHeight = this->h - 1; + _windowXAdd = _windowYAdd = 0; + _vm->_scrollX = _vm->_scrollY = 0; + _vm->_scrollCol = _vm->_scrollRow = 0; + _bufferStart.x = _bufferStart.y = 0; + _screenYOff = 0; +} + +void Screen::setPanel(int num) { + assert(num < 4); + _currentPanel = num; + _msVirtualOffset = _virtualOffsetsTable[num]; +} + +void Screen::updateScreen() { + // Merge the dirty rects + mergeDirtyRects(); + + // Loop through copying dirty areas to the physical screen + Common::List<Common::Rect>::iterator i; + for (i = _dirtyRects.begin(); i != _dirtyRects.end(); ++i) { + const Common::Rect &r = *i; + const byte *srcP = (const byte *)getBasePtr(r.left, r.top); + g_system->copyRectToScreen(srcP, this->pitch, r.left, r.top, + r.width(), r.height()); + } + + // Signal the physical screen to update + g_system->updateScreen(); + _dirtyRects.clear(); +} + +void Screen::setInitialPalettte() { + Common::copy(&INITIAL_PALETTE[0], &INITIAL_PALETTE[18 * 3], _rawPalette); + Common::fill(&_rawPalette[18 * 3], &_rawPalette[PALETTE_SIZE], 0); + + g_system->getPaletteManager()->setPalette(INITIAL_PALETTE, 0, 18); +} + +void Screen::loadPalette(int fileNum, int subfile) { + Resource *res = _vm->_files->loadFile(fileNum, subfile); + byte *palette = res->data(); + Common::copy(palette, palette + (_numColors * 3), &_rawPalette[_startColor * 3]); + delete res; +} + +void Screen::setPalette() { + g_system->getPaletteManager()->setPalette(&_rawPalette[0], 0, PALETTE_COUNT); +} + +void Screen::loadRawPalette(Common::SeekableReadStream *stream) { + stream->read(&_rawPalette[0], PALETTE_SIZE); + for (byte *p = &_rawPalette[0]; p < &_rawPalette[PALETTE_SIZE]; ++p) + *p = VGA_COLOR_TRANS(*p); +} + +void Screen::updatePalette() { + g_system->getPaletteManager()->setPalette(&_tempPalette[0], 0, PALETTE_COUNT); + updateScreen(); +} + +void Screen::savePalette() { + Common::copy(&_rawPalette[0], &_rawPalette[PALETTE_SIZE], + &_savedPalettes[_savedPaletteCount][0]); + + if (++_savedPaletteCount == 2) + _savedPaletteCount = 1; +} + +void Screen::restorePalette() { + if (--_savedPaletteCount < 0) + _savedPaletteCount = 0; + + Common::copy(&_savedPalettes[_savedPaletteCount][0], + &_savedPalettes[_savedPaletteCount][PALETTE_SIZE], &_rawPalette[0]); +} + +void Screen::getPalette(byte *pal) { + g_system->getPaletteManager()->grabPalette(pal, 0, 256); +} + +void Screen::forceFadeOut() { + const int FADE_AMOUNT = 2; + bool repeatFlag; + byte *srcP; + int count; + + do { + repeatFlag = false; + for (srcP = &_tempPalette[0], count = 0; count < PALETTE_SIZE; ++count, ++srcP) { + int v = *srcP; + if (v) { + repeatFlag = true; + *srcP = MAX(*srcP - FADE_AMOUNT, 0); + } + } + + updatePalette(); + _vm->_events->pollEventsAndWait(); + } while (repeatFlag && !_vm->shouldQuit()); +} + +void Screen::forceFadeIn() { + Common::fill(&_tempPalette[0], &_tempPalette[PALETTE_SIZE], 0); + + const int FADE_AMOUNT = 2; + bool repeatFlag; + do { + repeatFlag = false; + const byte *srcP = &_rawPalette[0]; + byte *destP = &_tempPalette[0]; + + for (int idx = 0; idx < PALETTE_SIZE; ++idx, ++srcP, ++destP) { + if (*destP != *srcP) { + repeatFlag = true; + *destP = MAX((int)*destP + FADE_AMOUNT, (int)*srcP); + } + } + + updatePalette(); + _vm->_events->pollEventsAndWait(); + } while (repeatFlag); +} + +void Screen::copyBuffer(const byte *data) { + byte *destP = (byte *)getPixels(); + Common::copy(data, data + (h * w), destP); + g_system->copyRectToScreen(destP, w, 0, 0, w, h); +} + +void Screen::setBufferScan() { + _clipWidth = _vWindowBytesWide - 1; + _windowXAdd = (320 - _clipWidth) >> 1; + _clipHeight = _vWindowLinesTall - 1; + _windowYAdd = (176 - _clipHeight) >> 1; +} + +void Screen::setScaleTable(int scale) { + int total = 0; + for (int idx = 0; idx < 256; ++idx) { + _scaleTable1[idx] = total >> 8; + _scaleTable2[idx] = total & 0xff; + total += scale; + } +} + +void Screen::saveScreen() { + _screenSave._clipWidth = _clipWidth; + _screenSave._clipHeight = _clipHeight; + _screenSave._windowXAdd = _windowXAdd; + _screenSave._windowYAdd = _windowYAdd; + _screenSave._scroll.x = _vm->_scrollX; + _screenSave._scroll.y = _vm->_scrollY; + _screenSave._scrollCol = _vm->_scrollCol; + _screenSave._scrollRow = _vm->_scrollRow; + _screenSave._bufferStart.x = _bufferStart.x; + _screenSave._bufferStart.y = _bufferStart.y; + _screenSave._screenYOff = _screenYOff; +} + +void Screen::restoreScreen() { + _clipWidth = _screenSave._clipWidth; + _clipHeight = _screenSave._clipHeight; + _windowXAdd = _screenSave._windowXAdd; + _windowYAdd = _screenSave._windowYAdd; + _vm->_scrollX = _screenSave._scroll.x; + _vm->_scrollY = _screenSave._scroll.y; + _vm->_scrollCol = _screenSave._scrollCol; + _vm->_scrollRow = _screenSave._scrollRow; + _bufferStart.x = _screenSave._bufferStart.x; + _bufferStart.y = _screenSave._bufferStart.y; + _screenYOff = _screenSave._screenYOff; +} + +void Screen::copyBlock(ASurface *src, const Common::Rect &bounds) { + Common::Rect destBounds = bounds; + destBounds.translate(_windowXAdd, _windowYAdd + _screenYOff); + + copyRectToSurface(*src, destBounds.left, destBounds.top, bounds); + addDirtyRect(destBounds); +} + +void Screen::restoreBlock() { + if (!_savedBounds.isEmpty()) + addDirtyRect(_savedBounds); + ASurface::restoreBlock(); +} + +void Screen::drawRect() { + addDirtyRect(Common::Rect(_orgX1, _orgY1, _orgX2, _orgY2)); + ASurface::drawRect(); +} + +void Screen::transBlitFrom(ASurface *src, const Common::Point &destPos) { + addDirtyRect(Common::Rect(destPos.x, destPos.y, destPos.x + src->w, destPos.y + src->h)); + ASurface::transBlitFrom(src, destPos); +} + +void Screen::transBlitFrom(ASurface *src, const Common::Rect &bounds) { + addDirtyRect(bounds); + ASurface::transBlitFrom(src, bounds); +} + +void Screen::blitFrom(Graphics::Surface &src) { + addDirtyRect(Common::Rect(0, 0, src.w, src.h)); + ASurface::blitFrom(src); +} + +void Screen::copyBuffer(Graphics::Surface *src) { + addDirtyRect(Common::Rect(0, 0, src->w, src->h)); + ASurface::copyBuffer(src); +} + +void Screen::setPaletteCycle(int startCycle, int endCycle, int timer) { + _startCycle = _cycleStart = startCycle; + _endCycle = endCycle; + + TimerEntry &te = _vm->_timers[6]; + te._timer = te._initTm = timer; + te._flag++; +} + +void Screen::cyclePaletteForward() { + cyclePaletteBackwards(); +} + +void Screen::cyclePaletteBackwards() { + if (!_vm->_timers[6]._flag) { + _vm->_timers[6]._flag++; + byte *pStart = &_rawPalette[_cycleStart * 3]; + byte *pEnd = &_rawPalette[_endCycle * 3]; + + for (int idx = _startCycle; idx < _endCycle; ++idx) { + g_system->getPaletteManager()->setPalette(pStart, idx, 1); + + pStart += 3; + if (pStart == pEnd) + pStart = &_rawPalette[_cycleStart * 3]; + } + + if (--_cycleStart <= _startCycle) + _cycleStart = _endCycle - 1; + + g_system->updateScreen(); + g_system->delayMillis(10); + } +} + +void Screen::addDirtyRect(const Common::Rect &r) { + _dirtyRects.push_back(r); + assert(r.isValidRect() && r.width() > 0 && r.height() > 0); +} + +void Screen::mergeDirtyRects() { + Common::List<Common::Rect>::iterator rOuter, rInner; + + // Ensure dirty rect list has at least two entries + rOuter = _dirtyRects.begin(); + for (int i = 0; i < 2; ++i, ++rOuter) { + if (rOuter == _dirtyRects.end()) + return; + } + + // Process the dirty rect list to find any rects to merge + for (rOuter = _dirtyRects.begin(); rOuter != _dirtyRects.end(); ++rOuter) { + rInner = rOuter; + while (++rInner != _dirtyRects.end()) { + + if ((*rOuter).intersects(*rInner)) { + // these two rectangles overlap or + // are next to each other - merge them + + unionRectangle(*rOuter, *rOuter, *rInner); + + // remove the inner rect from the list + _dirtyRects.erase(rInner); + + // move back to beginning of list + rInner = rOuter; + } + } + } +} + +bool Screen::unionRectangle(Common::Rect &destRect, const Common::Rect &src1, const Common::Rect &src2) { + destRect = src1; + destRect.extend(src2); + + return !destRect.isEmpty(); +} + + +} // End of namespace Access |