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rust port of craps #736
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rust port of craps #736
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[package] | ||
name = "rust" | ||
version = "0.1.0" | ||
edition = "2021" | ||
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html | ||
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[dependencies] | ||
rand = "0.8.5" |
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use crate::util; | ||
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enum GameState { | ||
ComeOut, | ||
PointRolls, | ||
GameOver, | ||
} | ||
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pub struct CrapsGame { | ||
wallet: usize, | ||
bet: usize, | ||
point: u8, | ||
state: GameState, | ||
} | ||
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impl CrapsGame { | ||
pub fn new() -> Self { | ||
let wallet = util::read_numeric("\nHow much money do you want to start with?"); | ||
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CrapsGame { | ||
wallet, | ||
bet: 0, | ||
point: 0, | ||
state: GameState::ComeOut, | ||
} | ||
} | ||
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pub fn tick(&mut self) -> bool { | ||
use GameState::*; | ||
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match self.state { | ||
ComeOut => self.new_round(), | ||
PointRolls => self.point_roll(), | ||
GameOver => false, | ||
} | ||
} | ||
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fn point_roll(&mut self) -> bool { | ||
let point = self.point; | ||
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println!("Rolling {point} wins. 7 loses."); | ||
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self.prompt_roll(); | ||
let roll = CrapsGame::roll(); | ||
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if roll == point { | ||
self.player_win(); | ||
} else if roll == 7 { | ||
self.player_lose(); | ||
} | ||
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true | ||
} | ||
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fn new_round(&mut self) -> bool { | ||
println!("\nCome out roll."); | ||
println!("7 and 11 win. 2, 3 and 12 lose.\n"); | ||
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loop { | ||
self.bet = util::read_numeric("Enter your bet:"); | ||
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if self.bet <= self.wallet { | ||
break; | ||
} else { | ||
println!("You don't have that much money!"); | ||
} | ||
} | ||
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self.prompt_roll(); | ||
let point = CrapsGame::roll(); | ||
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match point { | ||
11 | 7 => { | ||
self.player_win(); | ||
} | ||
2 | 3 | 12 => { | ||
self.player_lose(); | ||
} | ||
_ => { | ||
self.point = point; | ||
self.state = GameState::PointRolls | ||
} | ||
} | ||
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true | ||
} | ||
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fn player_win(&mut self) { | ||
let bet = self.bet; | ||
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println!("You won ${bet}!"); | ||
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self.wallet += bet; | ||
self.print_wallet(); | ||
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self.state = GameState::ComeOut; | ||
} | ||
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fn player_lose(&mut self) { | ||
let bet = self.bet; | ||
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println!("You lost ${bet}!"); | ||
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self.wallet -= bet; | ||
self.print_wallet(); | ||
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if self.wallet == 0 { | ||
self.game_over(); | ||
} else { | ||
self.state = GameState::ComeOut; | ||
} | ||
} | ||
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fn print_wallet(&self) { | ||
println!("\nYou have ${} in your wallet.", self.wallet); | ||
} | ||
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fn roll() -> u8 { | ||
use rand::Rng; | ||
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let roll = rand::thread_rng().gen_range(2..13); | ||
println!("\nYou rolled {}.", roll); | ||
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roll | ||
} | ||
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fn game_over(&mut self) { | ||
self.state = GameState::GameOver; | ||
} | ||
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fn prompt_roll(&mut self) { | ||
use util::Response::*; | ||
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let response = util::prompt("Ready to roll?"); | ||
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match response { | ||
Yes => (), | ||
No => self.game_over(), | ||
} | ||
} | ||
} |
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mod craps_game; | ||
mod util; | ||
use crate::craps_game::CrapsGame; | ||
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fn main() { | ||
println!("~~Craps~~"); | ||
println!("Creative Computing Morristown, New Jersey\n"); | ||
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let mut quit = false; | ||
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while !quit { | ||
let mut game = CrapsGame::new(); | ||
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loop { | ||
if !game.tick() { | ||
use util::Response::*; | ||
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match util::prompt("New Game?") { | ||
Yes => (), | ||
No => quit = true, | ||
} | ||
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break; | ||
} | ||
} | ||
} | ||
} |
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use std::io; | ||
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pub enum Response { | ||
Yes, | ||
No, | ||
} | ||
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pub fn read_line() -> String { | ||
let mut input = String::new(); | ||
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io::stdin() | ||
.read_line(&mut input) | ||
.expect("Error reading line."); | ||
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input | ||
} | ||
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pub fn read_numeric(message: &str) -> usize { | ||
loop { | ||
println!("{}", message); | ||
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let mut ok = true; | ||
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let input = read_line(); | ||
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for c in input.trim().chars() { | ||
if !c.is_numeric() { | ||
println!("You can only enter a number!"); | ||
ok = false; | ||
break; | ||
} | ||
} | ||
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if ok { | ||
let input = input.trim().parse(); | ||
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let _ = match input { | ||
Ok(i) => return i, | ||
Err(e) => { | ||
println!("please input a number ({})", e); | ||
} | ||
}; | ||
} | ||
} | ||
} | ||
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pub fn prompt(msg: &str) -> Response { | ||
use Response::*; | ||
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let mut _r = Response::Yes; | ||
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loop { | ||
println!("\n{}", msg); | ||
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let response = read_line().trim().to_uppercase(); | ||
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match response.as_str() { | ||
"YES" | "Y" => { | ||
_r = Yes; | ||
break; | ||
} | ||
"NO" | "N" => { | ||
_r = No; | ||
break; | ||
} | ||
_ => println!("Please input (Y)es or (N)o."), | ||
}; | ||
} | ||
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_r | ||
} |
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Not sure what I want to do here. Maybe better to have "press enter / input any key" for the next roll, rather than a yes/no prompt.