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-rw-r--r--lure/animseq.cpp148
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diff --git a/lure/animseq.cpp b/lure/animseq.cpp
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--- a/lure/animseq.cpp
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-/* ScummVM - Scumm Interpreter
- * Copyright (C) 2005-2006 The ScummVM project
- *
- * 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.
- *
- * $URL$
- * $Id$
- *
- */
-
-#include "lure/animseq.h"
-#include "lure/palette.h"
-#include "lure/decode.h"
-#include "lure/events.h"
-
-namespace Lure {
-
-// delay
-// Delays for a given number of milliseconds. If it returns true, it indicates that
-// Escape has been pressed, and the introduction should be aborted.
-
-AnimAbortType AnimationSequence::delay(uint32 milliseconds) {
- uint32 delayCtr = _system.getMillis() + milliseconds;
- Events &events = Events::getReference();
-
- while (_system.getMillis() < delayCtr) {
- while (events.pollEvent()) {
- if (events.type() == OSystem::EVENT_KEYDOWN) {
- if (events.event().kbd.keycode == 27) return ABORT_END_INTRO;
- else return ABORT_NEXT_SCENE;
- } else if (events.type() == OSystem::EVENT_LBUTTONDOWN)
- return ABORT_NEXT_SCENE;
- else if (events.type() == OSystem::EVENT_QUIT)
- return ABORT_END_INTRO;
- }
-
- uint32 delayAmount = delayCtr - _system.getMillis();
- if (delayAmount > 10) delayAmount = 10;
- _system.delayMillis(delayAmount);
- }
- return ABORT_NONE;
-}
-
-// decodeFrame
-// Decodes a single frame of the animation sequence
-
-void AnimationSequence::decodeFrame(byte *&pPixels, byte *&pLines) {
- byte *screen = _screen.screen_raw();
- uint16 screenPos = 0;
- uint16 len;
-
- while (screenPos < SCREEN_SIZE) {
- // Get line length
- len = (uint16) *pLines++;
- if (len == 0) {
- len = READ_LE_UINT16(pLines);
- pLines += 2;
- }
-
- // Move the splice over
- memcpy(screen, pPixels, len);
- screen += len;
- screenPos += len;
- pPixels += len;
-
- // Get the offset inc amount
- len = (uint16) *pLines++;
- if (len == 0) {
- len = READ_LE_UINT16(pLines);
- pLines += 2;
- }
-
- screen += len;
- screenPos += len;
- }
-
- // Make the decoded frame visible
- _screen.update();
-}
-
-AnimationSequence::AnimationSequence(Screen &screen, OSystem &system, uint16 screenId, Palette &palette,
- bool fadeIn): _screen(screen), _system(system), _screenId(screenId), _palette(palette) {
- PictureDecoder decoder;
- Disk &d = Disk::getReference();
- MemoryBlock *data = d.getEntry(_screenId);
- _decodedData = decoder.decode(data, MAX_ANIM_DECODER_BUFFER_SIZE);
- delete data;
-
- _lineRefs = d.getEntry(_screenId + 1);
-
- // Show the screen that preceeds the start of the animation data
- _screen.setPaletteEmpty();
- _screen.screen().data().copyFrom(_decodedData, 0, 0, FULL_SCREEN_HEIGHT * FULL_SCREEN_WIDTH);
- _screen.update();
-
- // Set the palette
- if (fadeIn) _screen.paletteFadeIn(&_palette);
- else _screen.setPalette(&_palette);
-
- // Set up frame poitners
- _pPixels = _decodedData->data() + SCREEN_SIZE;
- _pLines = _lineRefs->data();
- _pPixelsEnd = _decodedData->data() + _decodedData->size() - 1;
- _pLinesEnd = _lineRefs->data() + _lineRefs->size() - 1;
-}
-
-AnimationSequence::~AnimationSequence() {
- delete _lineRefs;
- delete _decodedData;
-}
-
-// show
-// Main method for displaying the animation
-
-AnimAbortType AnimationSequence::show() {
- AnimAbortType result;
-
- // Loop through displaying the animations
- while ((_pPixels < _pPixelsEnd) && (_pLines < _pLinesEnd)) {
- decodeFrame(_pPixels, _pLines);
-
- result = delay(130);
- if (result != ABORT_NONE) return result;
- }
-
- return ABORT_NONE;
-}
-
-bool AnimationSequence::step() {
- if ((_pPixels >= _pPixelsEnd) || (_pLines >= _pLinesEnd)) return false;
- decodeFrame(_pPixels, _pLines);
- _screen.setPalette(&_palette);
- return true;
-}
-
-} // end of namespace Lure