63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
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/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef PLAYGROUND3D_GFX_FRAMELIMITER_H
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#define PLAYGROUND3D_GFX_FRAMELIMITER_H
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#include "common/system.h"
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namespace Playground3d {
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namespace Gfx {
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/**
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* A framerate limiter
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*
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* Ensures the framerate does not exceed the specified value
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* by delaying until all of the timeslot allocated to the frame
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* is consumed.
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* Allows to curb CPU usage and have a stable framerate.
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*/
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class FrameLimiter {
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public:
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FrameLimiter(OSystem *system, const uint framerate);
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void startFrame();
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void delayBeforeSwap();
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void pause(bool pause);
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uint getLastFrameDuration() const;
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private:
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OSystem *_system;
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bool _enabled;
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uint _speedLimitMs;
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uint _startFrameTime;
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uint _lastFrameDurationMs;
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};
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} // End of namespace Gfx
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} // End of namespace Playground3d
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#endif // PLAYGROUND3D_GFX_FRAMELIMITER_H
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