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Switches drives to using floats for time counting.

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Hopefully to eliminate a lot of unnecessary `Time` work; inaccuracies should still be within tolerable range.
This commit is contained in:
Thomas Harte
2019-07-02 15:43:03 -04:00
parent fffe6ed2df
commit b9c2c42bc0
12 changed files with 54 additions and 57 deletions
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Storage/TimedEventLoop.cpp
+7 -3
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@@ -65,14 +65,18 @@ void TimedEventLoop::jump_to_next_event() {
}
void TimedEventLoop::set_next_event_time_interval(Time interval) {
set_next_event_time_interval(interval.get<float>());
}
void TimedEventLoop::set_next_event_time_interval(float interval) {
// Calculate [interval]*[input clock rate] + [subcycles until this event]
double double_interval = interval.get<double>() * static_cast<double>(input_clock_rate_) + subcycles_until_event_;
float float_interval = interval * float(input_clock_rate_) + subcycles_until_event_;
// So this event will fire in the integral number of cycles from now, putting us at the remainder
// number of subcycles
const int addition = static_cast<int>(double_interval);
const int addition = int(float_interval);
cycles_until_event_ += addition;
subcycles_until_event_ = fmod(double_interval, 1.0);
subcycles_until_event_ = fmodf(float_interval, 1.0);
assert(cycles_until_event_ >= 0);
assert(subcycles_until_event_ >= 0.0);