Glenn Maynard
66 lines
1.4 KiB
C++
66 lines
1.4 KiB
C++
#include "global.h"
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/*
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-----------------------------------------------------------------------------
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File: RageTimer.cpp
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Desc: See header.
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Copyright (c) 2001-2002 by the person(s) listed below. All rights reserved.
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Chris Danford
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-----------------------------------------------------------------------------
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*/
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#include "RageTimer.h"
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#include "RageLog.h"
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#include "SDL-1.2.5/include/SDL.h"
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#include "SDL-1.2.5/include/SDL_timer.h"
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const float SECS_IN_DAY = 60*60*24;
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/* XXX: SDL_GetTicks() wraps every month or so. Handle it. */
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RageTimer::RageTimer()
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{
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Init();
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GetDeltaTime(); /* so the next call to GetDeltaTime is from the construction of this object */
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}
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void RageTimer::Init()
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{
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/*
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This is needed for the "timer" system, not the "ticks" system; it often starts
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a thread, so let's not do it--we don't need it.
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static bool SDL_Initialized = false;
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if(!SDL_Initialized) {
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SDL_InitSubSystem(SDL_INIT_TIMER);
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SDL_Initialized = true;
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}
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*/
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}
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float RageTimer::GetDeltaTime()
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{
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/* Store the LDT in integral milliseconds, to avoid rounding error. */
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int now = SDL_GetTicks();
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int ret = now - m_iLastDeltaTime;
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m_iLastDeltaTime = now;
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return ret / 1000.f;
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}
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float RageTimer::PeekDeltaTime() const
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{
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return (SDL_GetTicks() - m_iLastDeltaTime) / 1000.f;
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}
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float RageTimer::GetTimeSinceStart()
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{
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return SDL_GetTicks() / 1000.f;
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}
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/* XXX: SDL_GetTicks() wraps every month or so. Handle it. */
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unsigned int GetTicks()
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{
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return SDL_GetTicks();
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}
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