Function oppai_sys::d_spacing_weight

pub unsafe extern "C" fn d_spacing_weight(
    distance: f32, 
    delta_time: f32, 
    prev_distance: f32, 
    prev_delta_time: f32, 
    angle: f32, 
    type_: c_int, 
    is_single: *mut c_int
) -> f32