// HARFANG(R) Copyright (C) 2021 Emmanuel Julien, NWNC HARFANG. Released under GPL/LGPL/Commercial Licence, see licence.txt for details.

#include "foundation/clock.h"

namespace hg {

static time_ns last{0}, dt{1}, clock{0};
static int clock_scale = 1024;

void reset_clock() { last = time_now(); }

time_ns tick_clock() {
	const auto now = time_now();
	dt = last ? ((now - last) * clock_scale) >> 10 : 1;
	last = now;
	clock += dt;
	return dt;
}

time_ns get_clock() { return clock; }
time_ns get_clock_dt() { return dt; }

void skip_clock() { reset_clock(); }

void set_clock_scale(float scale) { clock_scale = int(scale * 1024.f); }
float get_clock_scale() { return float(clock_scale) / 1024.f; }

} // namespace hg