void UpdateMainCamera(Camera* main_camera, World* world) {
auto player = world->player_component.begin()->entity;
auto transform_component = &world->transform_component;
main_camera->set_position(transform_component->WorldPosition(player));
main_camera->set_facing(
transform_component->WorldOrientation(player).Inverse() *
mathfu::kAxisY3f);
auto player_data = world->entity_manager.GetComponentData<PlayerData>(player);
auto raft_orientation = transform_component->WorldOrientation(
world->entity_manager.GetComponent<ServicesComponent>()->raft_entity());
main_camera->set_up(raft_orientation.Inverse() * player_data->GetUp());
}
mathfu::quat TransformComponent::WorldOrientation(corgi::EntityRef entity) {
TransformData* transform_data = Data<TransformData>(entity);
if (transform_data->parent) {
return transform_data->orientation *
WorldOrientation(transform_data->parent);
} else {
return transform_data->orientation;
}
}