tweak: comment

src/player.cpp

@@ -33,7 +33,7 @@ void Player::_process(double delta) {
     // process rotations
     this->process_rotate(delta); // global character rotation
     this->process_transform_camera(delta); // camera input rotation
-    // set the global motion based on model-space motion vector
+    // convert model-space motion vector to global space
     gd::Basis const &model_basis{this->model_node->get_global_basis()};
     this->anim_tree->set_walk_speed(gd::Math::max(0.f, model_basis.get_column(2).dot(this->camera_parent->get_basis().get_column(2))));
     gd::Vector3 const local_motion{this->anim_tree->get_root_motion_position()};