mirror of
https://gitlab.com/ryandwyer/perfect-dark
synced 2026-06-24 08:41:21 -04:00
Ryan Dwyer
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
#include <ultra64.h>
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#include "constants.h"
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#include "game/timing.h"
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#include "bss.h"
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#include "data.h"
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#include "types.h"
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void frametimeInit(void)
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{
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g_Vars.thisframestartt = osGetCount();
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g_Vars.prevframestartt = g_Vars.thisframestartt;
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}
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void frametimeApply(s32 diffframe60, s32 diffframe240, s32 frametime)
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{
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g_Vars.prevframestartt = g_Vars.thisframestartt;
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g_Vars.thisframestartt = frametime;
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g_Vars.diffframe60 = diffframe60;
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g_Vars.diffframe60f = diffframe60;
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g_Vars.diffframe60freal = PALUPF(g_Vars.diffframe60f);
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g_Vars.prevframestart240 = g_Vars.thisframestart240;
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g_Vars.thisframestart240 += diffframe240;
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g_Vars.diffframe240 = diffframe240;
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g_Vars.diffframe240f = diffframe240;
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g_Vars.diffframe240freal = PALUPF(g_Vars.diffframe240f);
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}
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void frametimeCalculate(void)
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{
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u32 count;
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u32 diffframet;
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u32 diffframe60;
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u32 diffframe240;
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do {
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count = osGetCount();
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diffframet = count - g_Vars.thisframestartt;
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g_Vars.diffframet = diffframet;
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diffframe60 = (g_Vars.lostframetime60t + diffframet + CYCLES_PER_FRAME / 2) / CYCLES_PER_FRAME;
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diffframe240 = (g_Vars.lostframetime240t + diffframet + CYCLES_PER_FRAME / 2 / 4) / (CYCLES_PER_FRAME / 4);
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} while (diffframe60 < g_Vars.mininc60);
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g_Vars.lostframetime60t = g_Vars.lostframetime60t + diffframet - diffframe60 * CYCLES_PER_FRAME;
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g_Vars.lostframetime240t = g_Vars.lostframetime240t + diffframet - diffframe240 * (CYCLES_PER_FRAME / 4);
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g_Vars.mininc60 = 1;
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frametimeApply(diffframe60, diffframe240, count);
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}
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