void ts::scene::Engine_sound_controller::update(std::size_t ticks)
{
auto frame_duration = ticks * 0.001f;
if (sorting_required_ && started_)
{
sort_sounds_by_locality();
play_prioritized_sounds();
}
for (auto& entry : engine_sounds_)
{
auto car = entry.first;
if (auto& engine_sound = entry.second)
{
auto position = car->position();
auto speed = car->speed(), top_speed = car->top_speed();
if (top_speed == 0.0) continue;
const float pitch_factor = std::min(static_cast<float>(speed / top_speed), 1.1f);
float new_pitch = base_pitch + (1.0f - base_pitch) * pitch_factor;
if (!car->control_state(controls::Control::Accelerate))
{
new_pitch = std::max(base_pitch + (new_pitch - base_pitch) * 0.67f, static_cast<float>(engine_sound->getPitch()) - frame_duration);
}
engine_sound->setPitch(new_pitch);
engine_sound->setVolume(new_pitch * new_pitch * 100.0f);
engine_sound->setPosition(static_cast<float>(position.x), static_cast<float>(position.y), 0.0f);
}
}
}
/*
* Get a string representation of this Spaceship's specifications.
* The string will be formatted as
* "NAME\n
* Top Speed: Warp TOP_SPEED\n
* Fuel Source: FUEL_SOURCE\n
* Crew Capacity: CREW_CAPACITY"
* where NAME, TOP_SPEED (to two decimal places), FUEL_SOURCE, and
* CREW_CAPACITY contain the values of the associated member variables.
* @uses stringstream
* @return string - A representation of this Spaceship's specifications
*/
string Spaceship::ToString() const
{
stringstream this_ship;
this_ship.setf(std::ios::fixed|std::ios::showpoint); // floatfield not set
this_ship.precision(2);
this_ship << name() << "\n" << "Top Speed: Warp " << top_speed() << "\n"
<< "Fuel Source: " << fuel_source() << "\n" << "Crew Capacity: " << crew_capacity();
return this_ship.str();
}
