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Diffstat (limited to 'engines/sherlock/animation.cpp')
| -rw-r--r-- | engines/sherlock/animation.cpp | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/engines/sherlock/animation.cpp b/engines/sherlock/animation.cpp new file mode 100644 index 0000000000..21d63633d3 --- /dev/null +++ b/engines/sherlock/animation.cpp @@ -0,0 +1,188 @@ +/* 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 "sherlock/animation.h" +#include "sherlock/sherlock.h" +#include "common/algorithm.h" + +namespace Sherlock { + +static const int NO_FRAMES = FRAMES_END; + +Animation::Animation(SherlockEngine *vm) : _vm(vm) { +} + +bool Animation::play(const Common::String &filename, int minDelay, int fade, + bool setPalette, int speed) { + Events &events = *_vm->_events; + Screen &screen = *_vm->_screen; + Sound &sound = *_vm->_sound; + int soundNumber = 0; + + // Check for any any sound frames for the given animation + const int *soundFrames = checkForSoundFrames(filename); + + // Add on the VDX extension + Common::String vdxName = filename + ".vdx"; + + // Load the animation + Common::SeekableReadStream *stream; + if (!_gfxLibraryFilename.empty()) + stream = _vm->_res->load(vdxName, _gfxLibraryFilename); + else if (_vm->_useEpilogue2) + stream = _vm->_res->load(vdxName, "epilog2.lib"); + else + stream = _vm->_res->load(vdxName, "epilogue.lib"); + + // Load initial image + Common::String vdaName = filename + ".vda"; + ImageFile images(vdaName, true, true); + + events.wait(minDelay); + if (fade != 0 && fade != 255) + screen.fadeToBlack(); + + if (setPalette) { + if (fade != 255) + screen.setPalette(images._palette); + } + + int frameNumber = 0; + Common::Point pt; + bool skipped = false; + while (!_vm->shouldQuit()) { + // Get the next sprite to display + int imageFrame = stream->readSint16LE(); + + if (imageFrame == -2) { + // End of animation reached + break; + } else if (imageFrame != -1) { + // Read position from either animation stream or the sprite frame itself + if (imageFrame < 0) { + imageFrame += 32768; + pt.x = stream->readUint16LE(); + pt.y = stream->readUint16LE(); + } else { + pt = images[imageFrame]._offset; + } + + // Draw the sprite. Note that we explicitly use the raw frame below, rather than the ImageFrame, + // since we don't want the offsets in the image file to be used, just the explicit position we specify + screen.transBlitFrom(images[imageFrame]._frame, pt); + } else { + // At this point, either the sprites for the frame has been complete, or there weren't any sprites + // at all to draw for the frame + if (fade == 255) { + // Gradual fade in + if (screen.equalizePalette(images._palette) == 0) + fade = 0; + } + + // Check if we've reached a frame with sound + if (frameNumber++ == *soundFrames) { + ++soundNumber; + ++soundFrames; + Common::String fname = _soundLibraryFilename.empty() ? + Common::String::format("%s%01d", filename.c_str(), soundNumber) : + Common::String::format("%s%02d", filename.c_str(), soundNumber); + + if (sound._voices) + sound.playSound(fname, WAIT_RETURN_IMMEDIATELY, 100, _soundLibraryFilename.c_str()); + } + + events.wait(speed * 3); + } + + if (events.kbHit()) { + Common::KeyState keyState = events.getKey(); + if (keyState.keycode == Common::KEYCODE_ESCAPE || + keyState.keycode == Common::KEYCODE_SPACE) { + skipped = true; + break; + } + } else if (events._pressed) { + skipped = true; + break; + } + } + + events.clearEvents(); + sound.stopSound(); + delete stream; + + return !skipped && !_vm->shouldQuit(); +} + +void Animation::setPrologueNames(const char *const *names, int count) { + for (int idx = 0; idx < count; ++idx, ++names) { + _prologueNames.push_back(*names); + } +} + +void Animation::setPrologueFrames(const int *frames, int count, int maxFrames) { + _prologueFrames.resize(count); + + for (int idx = 0; idx < count; ++idx, frames += maxFrames) { + _prologueFrames[idx].resize(maxFrames); + Common::copy(frames, frames + maxFrames, &_prologueFrames[idx][0]); + } +} + +void Animation::setTitleNames(const char *const *names, int count) { + for (int idx = 0; idx < count; ++idx, ++names) { + _titleNames.push_back(*names); + } +} + +void Animation::setTitleFrames(const int *frames, int count, int maxFrames) { + _titleFrames.resize(count); + + for (int idx = 0; idx < count; ++idx, frames += maxFrames) { + _titleFrames[idx].resize(maxFrames); + Common::copy(frames, frames + maxFrames, &_titleFrames[idx][0]); + } +} + +const int *Animation::checkForSoundFrames(const Common::String &filename) { + const int *frames = &NO_FRAMES; + + if (_soundLibraryFilename.empty()) { + for (uint idx = 0; idx < _prologueNames.size(); ++idx) { + if (filename.equalsIgnoreCase(_prologueNames[idx])) { + frames = &_prologueFrames[idx][0]; + break; + } + } + } else { + for (uint idx = 0; idx < _titleNames.size(); ++idx) { + if (filename.equalsIgnoreCase(_titleNames[idx])) { + frames = &_titleFrames[idx][0]; + break; + } + } + } + + return frames; +} + +} // End of namespace Sherlock |