Method update

core/input/input.cpp:238–268

#endif

void Input::VelocityTrack::update(const Vector2 &p_delta_p, const Vector2 &p_screen_delta_p) {
	uint64_t tick = OS::get_singleton()->get_ticks_usec();
	uint32_t tdiff = tick - last_tick;
	float delta_t = tdiff / 1000000.0;
	last_tick = tick;

	if (delta_t > max_ref_frame) {
		// First movement in a long time, reset and start again.
		velocity = Vector2();
		screen_velocity = Vector2();
		accum = p_delta_p;
		screen_accum = p_screen_delta_p;
		accum_t = 0;
		return;
	}

	accum += p_delta_p;
	screen_accum += p_screen_delta_p;
	accum_t += delta_t;

	if (accum_t < min_ref_frame) {
		// Not enough time has passed to calculate speed precisely.
		return;
	}

	velocity = accum / accum_t;
	screen_velocity = screen_accum / accum_t;
	accum = Vector2();
	screen_accum = Vector2();
	accum_t = 0;
}

void Input::VelocityTrack::reset() {
	last_tick = OS::get_singleton()->get_ticks_usec();