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Box2D
2.2.1
A 2D Physics Engine for Games
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00001 /* 00002 * Copyright (c) 2011 Erin Catto http://box2d.org 00003 * 00004 * This software is provided 'as-is', without any express or implied 00005 * warranty. In no event will the authors be held liable for any damages 00006 * arising from the use of this software. 00007 * Permission is granted to anyone to use this software for any purpose, 00008 * including commercial applications, and to alter it and redistribute it 00009 * freely, subject to the following restrictions: 00010 * 1. The origin of this software must not be misrepresented; you must not 00011 * claim that you wrote the original software. If you use this software 00012 * in a product, an acknowledgment in the product documentation would be 00013 * appreciated but is not required. 00014 * 2. Altered source versions must be plainly marked as such, and must not be 00015 * misrepresented as being the original software. 00016 * 3. This notice may not be removed or altered from any source distribution. 00017 */ 00018 00019 #include <Box2D/Common/b2Settings.h> 00020 00023 class b2Timer 00024 { 00025 public: 00026 00028 b2Timer(); 00029 00031 void Reset(); 00032 00034 float32 GetMilliseconds() const; 00035 00036 private: 00037 00038 #if defined(_WIN32) 00039 float64 m_start; 00040 static float64 s_invFrequency; 00041 #elif defined(__linux__) || defined (__APPLE__) 00042 unsigned long m_start_sec; 00043 unsigned long m_start_msec; 00044 #endif 00045 };