diff --git a/engines/pegasus/module.mk b/engines/pegasus/module.mk index eaf36b85ede..2f207eaa6eb 100644 --- a/engines/pegasus/module.mk +++ b/engines/pegasus/module.mk @@ -78,6 +78,7 @@ MODULE_OBJS = \ neighborhood/norad/subplatform.o \ neighborhood/norad/alpha/fillingstation.o \ neighborhood/norad/alpha/noradalpha.o \ + neighborhood/norad/alpha/panorama.o \ neighborhood/prehistoric/prehistoric.o \ neighborhood/tsa/fulltsa.o \ neighborhood/tsa/tinytsa.o \ diff --git a/engines/pegasus/neighborhood/norad/alpha/panorama.cpp b/engines/pegasus/neighborhood/norad/alpha/panorama.cpp new file mode 100755 index 00000000000..46b21eb1d90 --- /dev/null +++ b/engines/pegasus/neighborhood/norad/alpha/panorama.cpp @@ -0,0 +1,240 @@ +/* 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. + * + * Additional copyright for this file: + * Copyright (C) 1995-1997 Presto Studios, Inc. + * + * 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/macresman.h" +#include "common/stream.h" +#include "pegasus/neighborhood/norad/alpha/panorama.h" + +namespace Pegasus { + +Panorama::Panorama() : _panoramaMovie(kNoDisplayElement) { + blankFields(); +} + +Panorama::~Panorama() { + releasePanorama(); +} + +void Panorama::blankFields() { + _viewBounds = Common::Rect(); + _drawBounds = Common::Rect(); + _mask = 0; + _panoramaWidth = 0; + _panoramaHeight = 0; + _stripWidth = 0; + _stripLeft = -1; + _stripRight = -1; +} + +void Panorama::releasePanorama() { + if (_panoramaMovie.isMovieValid()) { + _panoramaMovie.releaseMovie(); + _panoramaWorld.deallocateSurface(); + blankFields(); + } +} + +static const uint32 kPanoramaResType = MKTAG('P', 'a', 'n', 'I'); // Panorama Information. +static const uint16 kPanoramaResID = 128; + +void Panorama::initFromMovieFile(const Common::String &fileName) { + // First, we need the resource fork for other reasons -- PanI resource + Common::MacResManager *resFork = new Common::MacResManager(); + if (!resFork->open(fileName) || !resFork->hasResFork()) + error("Could not open the resource fork of '%s'", fileName.c_str()); + + Common::SeekableReadStream *resource = resFork->getResource(kPanoramaResType, kPanoramaResID); + if (!resource) + error("No panorama information in the resource fork of '%s'", fileName.c_str()); + + _panoramaWidth = resource->readUint16BE(); + _panoramaHeight = resource->readUint16BE(); + _stripWidth = resource->readUint16BE(); + + delete resource; + delete resFork; + + // Now we open the movie like normal + _panoramaMovie.initFromMovieFile(fileName); +} + +void Panorama::setMask(Surface *mask) { + _mask = mask; +} + +// If the panorama is not open, do nothing and return. +// Otherwise, set up the view bounds. +void Panorama::setViewBounds(const Common::Rect &newView) { + if (!isPanoramaOpen()) + return; + + if (newView.isEmpty()) + return; + + Common::Rect r = newView; + + if (r.width() > _panoramaWidth) { + r.left = 0; + r.right = _panoramaWidth; + } else { + if (r.right > _panoramaWidth) + r.translate(_panoramaWidth - r.right, 0); + + if (r.left < 0) + r.translate(-r.left, 0); + } + + if (r.height() > _panoramaHeight) { + r.top = 0; + r.bottom = _panoramaHeight; + } else { + if (r.bottom > _panoramaHeight) + r.translate(0, _panoramaHeight - r.bottom); + + if (r.top < 0) + r.translate(0, -r.top); + } + + if (_viewBounds != r) { + tCoordType stripLeft = 0; + + if (r.width() != _viewBounds.width() || !_panoramaWorld.isSurfaceValid()) { + _panoramaWorld.deallocateSurface(); + makeNewSurface(r); + } else { + tCoordType stripRight; + calcStripRange(r, stripLeft, stripRight); + loadStrips(stripLeft, stripRight); + } + + _viewBounds = r; + _drawBounds = r; + _drawBounds.translate(-stripLeft * _stripWidth, 0); + } +} + +void Panorama::getViewBounds(Common::Rect &r) const { + r = _viewBounds; +} + +void Panorama::getPanoramaBounds(Common::Rect &r) const { + r = Common::Rect(0, 0, _panoramaWidth, _panoramaHeight); +} + +void Panorama::drawPanorama(const Common::Rect &destRect) { + if (_panoramaWorld.isSurfaceValid()) { + if (_mask) + _panoramaWorld.copyToCurrentPortMasked(_drawBounds, destRect, _mask); + else + _panoramaWorld.copyToCurrentPortTransparent(_drawBounds, destRect); + } +} + +// Make a new Surface big enough to show r, which is assumed to be a valid view bounds. +// Assumptions: +// r is a valid view bounds. +// _panoramaWorld is not allocated. +// _panoramaHeight, _stripWidth is correct. +// _panoramaMovie is allocated. +void Panorama::makeNewSurface(const Common::Rect& view) { + tCoordType stripLeft, stripRight; + calcStripRange(view, stripLeft, stripRight); + + Common::Rect r(0, 0, (stripRight - stripLeft + 1) * _stripWidth, _panoramaHeight); + _panoramaWorld.allocateSurface(r); + _panoramaMovie.shareSurface(&_panoramaWorld); + loadStrips(stripLeft, stripRight); +} + +// Assumes view is not empty. +void Panorama::calcStripRange(const Common::Rect &view, tCoordType &stripLeft, tCoordType &stripRight) { + stripLeft = view.left / _stripWidth; + stripRight = (view.left - view.left % _stripWidth + _stripWidth - 1 + view.width()) / _stripWidth; +} + +// Load in all needed strips to put range (stripLeft, stripRight) into the +// panorama's Surface. Try to optimize by saving any pixels already in the Surface. +// Assumptions: +// Surface is allocated and is big enough for maximum range of +// stripLeft and stripRight +void Panorama::loadStrips(tCoordType stripLeft, tCoordType stripRight) { + if (_stripLeft == -1) { + // Surface has just been allocated. + // Load in all strips. + for (tCoordType i = stripLeft; i <= stripRight; i++) + loadOneStrip(i, stripLeft); + + _stripLeft = stripLeft; + _stripRight = stripRight; + } else if (stripLeft != _stripLeft) { + tCoordType overlapLeft = MAX(stripLeft, _stripLeft); + tCoordType overlapRight = MIN(stripRight, _stripRight); + + if (overlapLeft <= overlapRight) { + Common::Rect r1((overlapLeft - _stripLeft) * _stripWidth, 0, + (overlapRight - _stripLeft + 1) * _stripWidth, _panoramaHeight); + Common::Rect r2 = r1; + + if (stripLeft < _stripLeft) { + Common::Rect bounds; + _panoramaWorld.getSurfaceBounds(bounds); + _panoramaWorld.getSurface()->move(bounds.right - r1.right, 0, _panoramaHeight); + + for (tCoordType i = stripLeft; i < _stripLeft; i++) + loadOneStrip(i, stripLeft); + } else { + _panoramaWorld.getSurface()->move(-r1.left, 0, _panoramaHeight); + + for (tCoordType i = _stripRight + 1; i <= stripRight; i++) + loadOneStrip(i, stripLeft); + } + } else { + // No overlap. + // Load everything. + for (tCoordType i = stripLeft; i <= stripRight; i++) + loadOneStrip(i, stripLeft); + } + + _stripLeft = stripLeft; + _stripRight = stripRight; + } else if (stripRight > _stripRight) { + // Need to add one or more strips. + for (tCoordType i = _stripRight + 1; i <= stripRight; i++) + loadOneStrip(i, _stripLeft); + + _stripRight = stripRight; + } else if (stripRight < _stripRight) { + // Need to chop off one strip. + _stripRight = stripRight; + } +} + +void Panorama::loadOneStrip(tCoordType stripToLoad, tCoordType leftStrip) { + _panoramaMovie.moveMovieBoxTo((stripToLoad - leftStrip) * _stripWidth, 0); + _panoramaMovie.setTime(stripToLoad); + _panoramaMovie.redrawMovieWorld(); +} + +} // End of namespace Pegasus diff --git a/engines/pegasus/neighborhood/norad/alpha/panorama.h b/engines/pegasus/neighborhood/norad/alpha/panorama.h new file mode 100755 index 00000000000..a773da9750d --- /dev/null +++ b/engines/pegasus/neighborhood/norad/alpha/panorama.h @@ -0,0 +1,98 @@ +/* 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. + * + * Additional copyright for this file: + * Copyright (C) 1995-1997 Presto Studios, Inc. + * + * 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. + * + */ + +#ifndef PEGASUS_NEIGHBORHOOD_NORAD_ALPHA_PANORAMA_H +#define PEGASUS_NEIGHBORHOOD_NORAD_ALPHA_PANORAMA_H + +#include "pegasus/movie.h" + +namespace Pegasus { + +/* + + Panorama implements a wide image using a specially constructed movie file. + The movie holds the image as a series of vertical strips, say 16 or 32 pixels wide. + + The panorama bounds defines the entire panorama. The view bounds represents the + area on the panorama that is kept in memory. + + The panorama bounds is also stored in the movie file; it cannot be changed. The + view bounds must always be a subset of the panorama bounds. + + In actuality, the area kept in memory is at least as wide as the view bounds (but + may be wider to coincide with the width of the movies slices), and is as tall as + the panorama bounds. The view bounds is used by the drawPanorama function to draw + a piece of the panorama to the current screen. + + The panorama movie is built at a time scale of 1, with each strip lasting for one + second, so that strip number corresponds exactly with the time value at which the + strip is stored. + + TO USE: + + Call one initFromMovieFile to open the movie. Then set up a view rect by + calling setViewBounds. Once these two functions have been called, drawPanorama + will draw the panorama. + +*/ + +class Panorama { +public: + Panorama(); + virtual ~Panorama(); + + void initFromMovieFile(const Common::String &); + void releasePanorama(); + bool isPanoramaOpen() { return _panoramaMovie.isMovieValid(); } + + void setViewBounds(const Common::Rect &); + void getViewBounds(Common::Rect &) const; + + void setMask(Surface *); + + void getPanoramaBounds(Common::Rect &) const; + + void drawPanorama(const Common::Rect &); + +protected: + void blankFields(); + void makeNewSurface(const Common::Rect &); + void calcStripRange(const Common::Rect &, tCoordType &, tCoordType &); + void loadStrips(tCoordType, tCoordType); + void loadOneStrip(tCoordType, tCoordType); + + Movie _panoramaMovie; + Surface _panoramaWorld, *_mask; + Common::Rect _viewBounds; + Common::Rect _drawBounds; + tCoordType _panoramaWidth, _panoramaHeight; + tCoordType _stripWidth; // Pixels per strip. + tCoordType _numStrips; + tCoordType _stripLeft, _stripRight; +}; + +} // End of namespace Pegasus + +#endif