// 00497110 = InitSpriteVisionSync() -- https://pastebin.com/raw/dRnw5zh5
pub unsafe fn init_sprite_vision_sync(
    orig: &dyn Fn()->u32)->u32 {
        let mut result: u32 = 0;
        ptr::memset(bw::current_visibility_hash, 0, sizeof(bw::current_visibility_hash));
        bw::want_visibility_hash = 0;
        bw::region_visibility_hash = 0;
        bw::current_hash_offset = 0;
        while result < 228 {
            if bw::units_dat_special_ability_flags[result] & 1 == 0 {
                if bw::units_dat_staredit_availability_flags[result] & 1 >= 1 {
                    bw::sprite_include_in_vision_sync[bw::flingy_sprite_id[bw::units_dat_flingy[result]]] = 1;
                }
                result += 1;
            }
        }
        return result;
    }