mirror of
https://github.com/libretro/scummvm.git
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296 lines
8.0 KiB
C++
296 lines
8.0 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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*
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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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*
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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/algorithm.h"
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#include "common/endian.h"
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#include "common/memstream.h"
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#include "access/access.h"
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#include "access/asurface.h"
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namespace Access {
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const int TRANSPARENCY = 0;
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SpriteResource::SpriteResource(AccessEngine *vm, Resource *res) {
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Common::Array<uint32> offsets;
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int count = res->_stream->readUint16LE();
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for (int i = 0; i < count; i++)
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offsets.push_back(res->_stream->readUint32LE());
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offsets.push_back(res->_size); // For easier calculations of Noctropolis sizes
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// Build up the frames
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for (int i = 0; i < count; ++i) {
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res->_stream->seek(offsets[i]);
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int frameSize = offsets[i + 1] - offsets[i];
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SpriteFrame *frame = new SpriteFrame(vm, res->_stream, frameSize);
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_frames.push_back(frame);
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}
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}
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SpriteResource::~SpriteResource() {
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for (uint i = 0; i < _frames.size(); ++i)
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delete _frames[i];
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}
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SpriteFrame::SpriteFrame(AccessEngine *vm, Common::SeekableReadStream *stream, int frameSize) {
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int xSize = stream->readUint16LE();
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int ySize = stream->readUint16LE();
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if (vm->getGameID() == GType_MartianMemorandum) {
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int size = stream->readUint16LE();
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if (size != frameSize)
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warning("Unexpected file difference: framesize %d - size %d %d - unknown %d", frameSize, xSize, ySize, size);
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}
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create(xSize, ySize);
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// Empty surface
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byte *data = (byte *)getPixels();
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Common::fill(data, data + w * h, TRANSPARENCY);
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// Decode the data
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for (int y = 0; y < h; ++y) {
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int offset = stream->readByte();
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int len = stream->readByte();
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assert((offset + len) <= w);
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byte *destP = (byte *)getBasePtr(offset, y);
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stream->read(destP, len);
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}
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}
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SpriteFrame::~SpriteFrame() {
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free();
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}
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/*------------------------------------------------------------------------*/
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ImageEntry::ImageEntry() {
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_frameNumber = 0;
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_spritesPtr = nullptr;
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_offsetY = 0;
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_flags = 0;
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}
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/*------------------------------------------------------------------------*/
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static bool sortImagesY(const ImageEntry &ie1, const ImageEntry &ie2) {
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int v = (ie1._position.y + ie1._offsetY) - (ie2._position.y + ie2._offsetY);
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return (v < 0) || (v == 0 && ie1._position.y <= ie2._position.y);
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}
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void ImageEntryList::addToList(ImageEntry &ie) {
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assert(size() < 35);
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push_back(ie);
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Common::sort(begin(), end(), sortImagesY);
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}
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/*------------------------------------------------------------------------*/
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int BaseSurface::_clipWidth;
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int BaseSurface::_clipHeight;
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BaseSurface::BaseSurface(): Graphics::Screen(0, 0) {
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free(); // Free the 0x0 surface allocated by Graphics::Screen
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_leftSkip = _rightSkip = 0;
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_topSkip = _bottomSkip = 0;
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_lastBoundsX = _lastBoundsY = 0;
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_lastBoundsW = _lastBoundsH = 0;
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_orgX1 = _orgY1 = 0;
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_orgX2 = _orgY2 = 0;
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_lColor = 0;
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_maxChars = 0;
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}
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BaseSurface::~BaseSurface() {
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_savedBlock.free();
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}
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void BaseSurface::clearBuffer() {
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byte *pSrc = (byte *)getPixels();
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Common::fill(pSrc, pSrc + w * h, 0);
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}
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void BaseSurface::plotImage(SpriteResource *sprite, int frameNum, const Common::Point &pt) {
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SpriteFrame *frame = sprite->getFrame(frameNum);
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Common::Rect r(pt.x, pt.y, pt.x + frame->w, pt.y + frame->h);
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if (!clip(r)) {
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_lastBoundsX = r.left;
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_lastBoundsY = r.top;
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_lastBoundsW = r.width();
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_lastBoundsH = r.height();
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plotF(frame, pt);
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}
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}
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void BaseSurface::copyBuffer(Graphics::ManagedSurface *src) {
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blitFrom(*src);
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}
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void BaseSurface::plotF(SpriteFrame *frame, const Common::Point &pt) {
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sPlotF(frame, Common::Rect(pt.x, pt.y, pt.x + frame->w, pt.y + frame->h));
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}
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void BaseSurface::plotB(SpriteFrame *frame, const Common::Point &pt) {
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sPlotB(frame, Common::Rect(pt.x, pt.y, pt.x + frame->w, pt.y + frame->h));
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}
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void BaseSurface::sPlotF(SpriteFrame *frame, const Common::Rect &bounds) {
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transBlitFrom(*frame, Common::Rect(0, 0, frame->w, frame->h), bounds, TRANSPARENCY, false);
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}
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void BaseSurface::sPlotB(SpriteFrame *frame, const Common::Rect &bounds) {
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transBlitFrom(*frame, Common::Rect(0, 0, frame->w, frame->h), bounds, TRANSPARENCY, true);
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}
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void BaseSurface::copyBlock(BaseSurface *src, const Common::Rect &bounds) {
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copyRectToSurface(*src, bounds.left, bounds.top, bounds);
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}
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void BaseSurface::copyTo(BaseSurface *dest) {
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if (dest->empty())
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dest->create(this->w, this->h);
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dest->blitFrom(*this);
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}
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void BaseSurface::saveBlock(const Common::Rect &bounds) {
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_savedBounds = bounds;
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_savedBounds.clip(Common::Rect(0, 0, this->w, this->h));
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_savedBlock.free();
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_savedBlock.create(bounds.width(), bounds.height(),
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Graphics::PixelFormat::createFormatCLUT8());
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_savedBlock.copyRectToSurface(*this, 0, 0, _savedBounds);
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}
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void BaseSurface::restoreBlock() {
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if (!_savedBounds.isEmpty()) {
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copyRectToSurface(_savedBlock, _savedBounds.left, _savedBounds.top,
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Common::Rect(0, 0, _savedBlock.w, _savedBlock.h));
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_savedBlock.free();
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_savedBounds = Common::Rect(0, 0, 0, 0);
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}
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}
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void BaseSurface::drawRect() {
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Graphics::ManagedSurface::fillRect(Common::Rect(_orgX1, _orgY1, _orgX2, _orgY2), _lColor);
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}
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void BaseSurface::drawLine(int x1, int y1, int x2, int y2, int col) {
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Graphics::ManagedSurface::drawLine(x1, y1, x2, y2, col);
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}
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void BaseSurface::drawLine() {
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Graphics::ManagedSurface::drawLine(_orgX1, _orgY1, _orgX2, _orgY1, _lColor);
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}
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void BaseSurface::drawBox() {
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Graphics::ManagedSurface::drawLine(_orgX1, _orgY1, _orgX2, _orgY1, _lColor);
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Graphics::ManagedSurface::drawLine(_orgX1, _orgY2, _orgX2, _orgY2, _lColor);
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Graphics::ManagedSurface::drawLine(_orgX2, _orgY1, _orgX2, _orgY1, _lColor);
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Graphics::ManagedSurface::drawLine(_orgX2, _orgY2, _orgX2, _orgY2, _lColor);
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}
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void BaseSurface::flipHorizontal(BaseSurface &dest) {
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dest.create(this->w, this->h);
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for (int y = 0; y < h; ++y) {
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const byte *pSrc = (const byte *)getBasePtr(this->w - 1, y);
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byte *pDest = (byte *)dest.getBasePtr(0, y);
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for (int x = 0; x < w; ++x, --pSrc, ++pDest)
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*pDest = *pSrc;
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}
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}
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void BaseSurface::moveBufferLeft() {
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byte *p = (byte *)getPixels();
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Common::copy(p + TILE_WIDTH, p + (w * h), p);
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}
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void BaseSurface::moveBufferRight() {
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byte *p = (byte *)getPixels();
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Common::copy_backward(p, p + (pitch * h) - TILE_WIDTH, p + (pitch * h));
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}
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void BaseSurface::moveBufferUp() {
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byte *p = (byte *)getPixels();
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Common::copy(p + (pitch * TILE_HEIGHT), p + (pitch * h), p);
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}
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void BaseSurface::moveBufferDown() {
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byte *p = (byte *)getPixels();
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Common::copy_backward(p, p + (pitch * (h - TILE_HEIGHT)), p + (pitch * h));
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}
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bool BaseSurface::clip(Common::Rect &r) {
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int skip;
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_leftSkip = _rightSkip = 0;
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_topSkip = _bottomSkip = 0;
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if (r.left > _clipWidth || r.left < 0) {
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if (r.left >= 0)
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return true;
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skip = -r.left;
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r.setWidth(r.width() - skip);
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_leftSkip = skip;
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r.moveTo(0, r.top);
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}
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int right = r.right - 1;
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if (right < 0)
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return true;
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else if (right > _clipWidth) {
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skip = right - _clipWidth;
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r.setWidth(r.width() - skip);
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_rightSkip = skip;
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}
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if (r.top > _clipHeight || r.top < 0) {
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if (r.top >= 0)
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return true;
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skip = -r.top;
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r.setHeight(r.height() - skip);
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_topSkip = skip;
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r.moveTo(r.left, 0);
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}
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int bottom = r.bottom - 1;
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if (bottom < 0)
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return true;
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else if (bottom > _clipHeight) {
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skip = bottom - _clipHeight;
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_bottomSkip = skip;
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r.setHeight(r.height() - skip);
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}
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return false;
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}
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} // End of namespace Access
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