Thanks, that looks good. I think that's all I really need, but I'm new at programming so I really want to understand how to use QPC myself, so that I can wrap it in whatever code I want. Maybe I should have been more specific in the first place. 
I've been wanting to use QueryPerformanceCounter for quite some time, and I checked out the Microsoft documentation hoping to find out everything I need to know, but what I found was a bunch of Windows code that didn't make an ounce of sense.
So I guess I need a little help with figuring out how to use QPC with Allegro.
Just so I don't get scolded for not trying to figure it out myself, I'm a busy high schooler who barely has any free time, and I'm used to reading the Allegro docs, which I find very easy to understand, but the Microsoft docs on the other hand...
Anyway, sorry to pester you all with a dumb question, but I really need help.
Thanks, that looks good. I think that's all I really need, but I'm new at programming so I really want to understand how to use QPC myself, so that I can wrap it in whatever code I want. Maybe I should have been more specific in the first place.
| 1 | #define WIN_ANIME_TIMERLOOP 0x7fffffffffffffffLL |
| 2 | __int64 animation_timer; |
| 3 | __int64 frequency; |
| 4 | |
| 5 | __int64 WinGetAnimationTime() { return animation_timer; } |
| 6 | |
| 7 | void WinInstallAnimationTimer() |
| 8 | { |
| 9 | QueryPerformanceFrequency(( LARGE_INTEGER* )&frequency); |
| 10 | // (higher == faster, lower == slower) |
| 11 | frequency /= 500; |
| 12 | QueryPerformanceCounter(( LARGE_INTEGER* )&animation_timer); |
| 13 | animation_timer /= frequency; |
| 14 | } |
| 15 | |
| 16 | void WinUpdateAnimationTimer() |
| 17 | { |
| 18 | QueryPerformanceCounter(( LARGE_INTEGER* )&animation_timer); |
| 19 | animation_timer /= frequency; |
| 20 | } |
| 21 | |
| 22 | __int64 WinGetRelativeAnimationTime(__int64& oldtime) |
| 23 | { |
| 24 | __int64 t = oldtime; |
| 25 | oldtime = animation_timer; |
| 26 | |
| 27 | if(t > oldtime) |
| 28 | return ((WIN_ANIME_TIMERLOOP - t) + oldtime); |
| 29 | else |
| 30 | return (oldtime - t); |
| 31 | } |
That's more or less how I use it. Shouldn't be hard to decipher. Basically just use QueryPerformanceFrequency() and QueryPerformanceCounter() to make it track the same speed on all systems, and reference it for all your timing needs.
]]>I'll just use it until I understand how it works then, and yeah, it's pretty simple code, so it shouldn't take long for me to decipher it.
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