66 

    67 impl TryFrom<usize> for AmmoType {

    68     type Error = &'static str;

    69 

    70     fn try_from(value: usize) -> Result<Self, Self::Error> {

    71         if value < Self::Count as usize {

    72             Ok(unsafe { std::mem::transmute(value) })

    73         } else {

    74             Err("Invalid ammo type")

    75         }

    76     }

    77 }