76 lines
2.2 KiB
C++
76 lines
2.2 KiB
C++
/* 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 3 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#include "common/util.h"
|
|
#include "math/utils.h"
|
|
#include "tetraedge/te/te_frame_anim.h"
|
|
|
|
namespace Tetraedge {
|
|
|
|
TeFrameAnim::TeFrameAnim() : _nbFrames(0), _frameRate(25.0f), _reversed(false), _minFrame(0),
|
|
_numFramesToShow(-1), _startTime(0), _endTime(FLT_MAX), _loopCount(0), _lastFrameShown(-1) {
|
|
}
|
|
|
|
void TeFrameAnim::update(double millis) {
|
|
int minFrame = MIN(_minFrame, _nbFrames);
|
|
int maxFrame = MIN(_minFrame + _numFramesToShow, _nbFrames);
|
|
double frameNo = _frameRate * millis / 1000.0;
|
|
|
|
int loopsDone;
|
|
int framesToPlay = maxFrame - minFrame;
|
|
if (framesToPlay <= 0 && _nbFrames > 0)
|
|
framesToPlay = _nbFrames;
|
|
|
|
int frameToShow;
|
|
if (framesToPlay == 0) {
|
|
frameToShow = 0;
|
|
loopsDone = -1;
|
|
} else if (framesToPlay > 0) {
|
|
loopsDone = (int)((int)frameNo / framesToPlay);
|
|
if (!_reversed) {
|
|
frameToShow = (int)frameNo % framesToPlay + minFrame;
|
|
} else {
|
|
frameToShow = (maxFrame - 1) - (int)frameNo % framesToPlay;
|
|
}
|
|
} else {
|
|
// else, we don't know the total frames.. just keep asking for higher.
|
|
loopsDone = -1;
|
|
frameToShow = (int)frameNo;
|
|
}
|
|
|
|
if (_loopCount == -1 || loopsDone < _loopCount) {
|
|
if (frameToShow == _lastFrameShown)
|
|
return;
|
|
|
|
_lastFrameShown = frameToShow;
|
|
if (_frameChangedSignal.call()) {
|
|
// got signal that we'd finished.
|
|
if (_nbFrames == 0)
|
|
_nbFrames = frameToShow;
|
|
}
|
|
} else {
|
|
stop();
|
|
_onFinishedSignal.call();
|
|
}
|
|
}
|
|
|
|
} // end namespace Tetraedge
|