bingame-rs/src/main.rs

98 lines
2.6 KiB
Rust

// Copyright (c) 2022 Emma Tebibyte
// SPDX-License-Identifier: AGPL-3.0-or-later
/* Bingame is free software: you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* Bingame is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see https://www.gnu.org/licenses/.
*/
use rand::Rng;
use std::cmp::Ordering;
fn parse_input() -> Option<u32> {
loop {
let mut input = String::new();
std::io::stdin()
.read_line(&mut input)
.unwrap();
match input.trim().parse::<u32>() {
Ok(output) => return Some(output),
Err(_) => {
match input.trim() {
"quit" | ":q" | "q" | "stop" | "exit" => {
println!("Stopping...");
return None;
},
_ => eprintln!("{} is not a number!", input),
};
},
};
}
}
fn main() {
println!("Welcome to bingame! Type \"quit\" anytime to stop playing.
Provide an upward limit for generated numbers:");
let limit = match parse_input() {
Some(limit) => limit,
None => std::process::exit(0),
};
game(limit)
}
fn numgen(limit: u32) -> Result<(u32, u32), bool> {
// generate random number
let nombre: u32 = rand::thread_rng().gen_range(0..limit);
// convert number from decimal to binary notation
let mut binvec = vec![];
let mut countdown = nombre;
while countdown > 0 {
binvec.push(countdown % 2);
countdown /= 2;
}
let mut binnery = String::new();
for i in binvec { binnery = i.to_string() + &binnery; }
let binnery = binnery.parse::<u32>();
let binary = match binnery {
Ok(binary) => binary,
Err(_) => std::process::abort(),
};
return Ok((nombre, binary));
}
fn game(limit: u32) {
loop {
let ans = numgen(limit).unwrap();
println!("Type {} in binary", ans.0);
let guess = match parse_input() {
Some(guess) => guess,
None => std::process::exit(0),
};
match guess.cmp(&ans.1) {
Ordering::Equal => {
println!("That's correct! {} in binary is {}!", ans.0, ans.1);
},
Ordering::Greater | Ordering::Less => {
println!("Nope! {} in binary is {}!", ans.0, ans.1);
},
};
}
}