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Rewrite + some comments for love.timer.getMicroTime

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bart@bartbes.ath.cx
2009-11-22 13:25:45 +01:00
parent 868c2577a7
commit dc014f720a
1 changed files with 8 additions and 11 deletions
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src/modules/timer/sdl/Timer.cpp
+8 -11
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@@ -93,21 +93,18 @@ namespace sdl
float Timer::getMicroTime() const
{
#ifdef LOVE_WINDOWS
FILETIME ft;
FILETIME tstruct;
unsigned __int64 t = 0;
GetSystemTimeAsFileTime(&ft);
t |= ft.dwHighDateTime;
GetSystemTimeAsFileTime(&tstruct); //ah, yes, a struct with a high and a low part
t = tstruct.dwHighDateTime; //let's make it one variable;
t <<= 32;
t |= ft.dwLowDateTime;
t /= 10;
t |= tstruct.dwLowDateTime;
#if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000Ui64
float floatt = (t/10-11644473600000000Ui64)/1000000.0f;
#else
#define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL
#endif
t -= DELTA_EPOCH_IN_MICROSECS;
float floatt = t/1000000.0f;
floatt %= 86400;
float floatt = (t/11644473600000000ULL)/1000000.0f;
#endif //even windows has it's differences, yay...
floatt %= 86400; //from start of day, else it's too big for a lua_Number
return floatt;
#else
timeval t;