1 /*============================================================================= 2 Blobby Volley 2 3 Copyright (C) 2006 Jonathan Sieber (jonathan_sieber@yahoo.de) 4 Copyright (C) 2006 Daniel Knobe (daniel-knobe@web.de) 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2 of the License, or 9 (at your option) any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software 18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 =============================================================================*/ 20 21 /** 22 * @file SpeedController.h 23 * @brief Contains a class which determine the framerate 24 */ 25 26 #pragma once 27 28 #include "BlobbyDebug.h" 29 30 /// \brief class controlling game speed 31 /// \details This class can control the game speed and the displayed FPS. 32 /// It is updated once a frame and waits the necessary time. 33 /// A distinction is made between game FPS and real FPS. 34 /// Game FPS is the number of game loop iterations per second, 35 /// real FPS is the number of screen updates per second. The real 36 /// FPS is reached with framedropping 37 /// The class can report how much time is actually waited. If this value 38 /// is close to zero, the real speed can be altered. 39 40 41 class SpeedController : public ObjectCounter<SpeedController> 42 { 43 public: 44 SpeedController(float gameFPS); 45 ~SpeedController(); 46 47 void setGameSpeed(float fps); getGameSpeed()48 float getGameSpeed() const{return mGameFPS;} 49 50 /// This reports whether a framedrop is necessary to hold the real FPS 51 bool doFramedrop() const; 52 53 /// gives the caller the fps of the drawn frames: getFPS()54 int getFPS() const { return mFPS; } setDrawFPS(bool draw)55 void setDrawFPS(bool draw) { mDrawFPS = draw; } //help methods getDrawFPS()56 bool getDrawFPS() const { return mDrawFPS; } 57 58 /// This updates everything and waits the necessary time 59 void update(); 60 setMainInstance(SpeedController * inst)61 static void setMainInstance(SpeedController* inst) { mMainInstance = inst; } getMainInstance()62 static SpeedController* getMainInstance() { return mMainInstance; } 63 private: 64 float mGameFPS; 65 int mFPS; 66 int mFPSCounter; 67 bool mFramedrop; 68 bool mDrawFPS; 69 static SpeedController* mMainInstance; 70 int mOldTicks; 71 72 // internal data 73 unsigned int mBeginSecond; 74 int mCounter; 75 }; 76 77 78