Function expect_f32

perro_source/core/perro_animation/src/panim/fields.rs:398–402

(value: &SceneValue, key: &str, line_no: usize)

            return Err(format!(
                "line {}: bone name cannot be empty in `{}`",
                line_no, key
            ));
        }
        AnimationBoneSelector::Name(stripped.to_string().into())
    };

    Ok(Some((selector, property)))
}