• Listener : thor::EventSystem< Event, EventIdentifier > , thor::TriggeringTimer
• PolarVector2f : thor::PolarVector2< T >
• Ptr : thor::Emitter , thor::Affector , thor::TargetEmitter , thor::DirectionalEmitter , thor::ColorAffector , thor::FadeOutAffector , thor::FadeInAffector , thor::TorqueAffector , thor::ForceAffector