41 lines
895 B
C
41 lines
895 B
C
#pragma once
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#include "types.h"
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct _App App;
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// GameTime starts counting at 100 seconds.
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#define GAMETIME_EPOCH ((int64_t)(100 * 1000 * 1000))
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// GameTime keeps track of running (or paused) time of the game.
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typedef struct {
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App *super;
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int64_t now; // Microseconds since object creation, adding GAMETIME_EPOCH.
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} System_GameTime;
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System_GameTime *gametime_NewSystem(App *super);
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void gametime_DeleteSystem(System_GameTime *sys);
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// Advance pushes the clock forwards by DeltaTime.
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void gametime_Advance(System_GameTime *sys, Duration deltaTime);
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// time_XXX functions, ported to GameTime.
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TimePoint gametime_Now(System_GameTime *sys);
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Duration gametime_Since(System_GameTime *sys, TimePoint prev);
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Duration gametime_Reset(System_GameTime *sys, TimePoint *prev);
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#ifdef __cplusplus
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}
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#endif
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