1 #[repr(C)]

     2 pub struct Preview {

     3     width: u32,

     4     height: u32,

     5     hedgehogs_number: u8,

     6     land: *const u8,

     7 }

     8 

     9 

    10 #[no_mangle]

    11 pub extern "C" fn protocol_version() -> u32 {

    12     56

    13 }

    14 

    15 #[no_mangle]

    16 pub extern "C" fn generate_preview () -> Preview  {

    17     unimplemented!()

    18 }