mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-23 02:11:38 +00:00
79 lines
2.1 KiB
C++
79 lines
2.1 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 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 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:
|
|
/**
|
|
* Updates _deltaTime with the difference between the current time and
|
|
* when the last update() was called.
|
|
*/
|
|
void update();
|
|
/**
|
|
* Get the delta time since the last frame. (The time between update() calls)
|
|
*
|
|
* @return Delta time since the last frame (in milliseconds)
|
|
*/
|
|
uint32 getDeltaTime() const { return _deltaTime; }
|
|
/**
|
|
* Get the time from the program starting to the last update() call
|
|
*
|
|
* @return Time from program start to last update() call (in milliseconds)
|
|
*/
|
|
uint32 getLastMeasuredTime() { return _lastTime; }
|
|
|
|
/**
|
|
* Pause the clock. Any future delta times will take this pause into account.
|
|
* Has no effect if the clock is already paused.
|
|
*/
|
|
void start();
|
|
/**
|
|
* Un-pause the clock.
|
|
* Has no effect if the clock is already un-paused.
|
|
*/
|
|
void stop();
|
|
};
|
|
|
|
} // End of namespace ZVision
|
|
|
|
#endif
|