clock.h

/* 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/>.
 *
 */

#ifndef ZVISION_CLOCK_H
#define ZVISION_CLOCK_H

#include "common/types.h"

class OSystem;

namespace ZVision {

/* Class for handling frame to frame deltaTime while keeping track of time pauses/un-pauses */
class Clock {
public:
    Clock(OSystem *system);

private:
    OSystem *_system;
    uint32 _lastTime;
    int32 _deltaTime;
    uint32 _pausedTime;
    bool _paused;

public:
    void update();

    uint32 getDeltaTime() const {
        return _deltaTime;
    }

    uint32 getLastMeasuredTime() {
        return _lastTime;
    }

    void start();

    void stop();
};

} // End of namespace ZVision

#endif