Port 69_Pizza to Rust

69_Pizza/rust/Cargo.toml

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+[package]
+name = "rust"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.75"
+fastrand = "2.0.1"

69_Pizza/rust/README.md

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+Original source downloaded [from Vintage Basic](http://www.vintage-basic.net/games.html)
+
+Conversion to [Rust](https://www.rust-lang.org/).

69_Pizza/rust/src/main.rs

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+use anyhow::Result;
+use std::io;
+
+fn print_centered(text: &str) {
+    println!("{:^72}", text);
+}
+
+fn read_line() -> Result<String> {
+    let mut input = String::new();
+    io::stdin().read_line(&mut input)?;
+    input.truncate(input.trim_end().len());
+    Ok(input)
+}
+
+fn read_number() -> Result<u32> {
+    let line = read_line()?;
+    let num = line.parse()?;
+    Ok(num)
+}
+
+fn print_banner() {
+    print_centered("PIZZA");
+    print_centered("CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY");
+    println!();
+    println!();
+    println!();
+}
+
+fn print_instructions() -> Result<String> {
+    println!("PIZZA DELIVERY GAME");
+    println!();
+    println!("WHAT IS YOUR FIRST NAME");
+
+    let name = read_line()?;
+    println!("HI, {name}.  IN THIS GAME YOU ARE TO TAKE ORDERS");
+    println!("FOR PIZZAS.  THEN YOU ARE TO TELL A DELIVERY BOY");
+    println!("WHERE TO DELIVER THE ORDERED PIZZAS.");
+    println!();
+    println!();
+
+    print_map();
+
+    println!("THE OUTPUT IS A MAP OF THE HOMES WHERE");
+    println!("YOU ARE TO SEND PIZZAS.");
+    println!();
+    println!("YOUR JOB IS TO GIVE A TRUCK DRIVER");
+    println!("THE LOCATION OR COORDINATES OF THE");
+    println!("HOME ORDERING THE PIZZA.");
+    println!();
+
+    Ok(name)
+}
+
+fn print_ruler() {
+    println!(" -----1-----2-----3-----4-----");
+}
+
+fn print_ticks() {
+    println!("-");
+    println!("-");
+    println!("-");
+    println!("-");
+}
+
+fn print_street(i: u32) {
+    let street_number = 3 - i;
+    let street_name = (street_number + 1).to_string();
+
+    let mut line = street_name.clone();
+    let space = "     ";
+    for customer_idx in 0..4 {
+        line.push_str(space);
+        let customer = 4 * street_number + customer_idx;
+        line.push(char::from_u32(65 + customer).unwrap());
+    }
+    line.push_str(space);
+    line.push_str(&street_name);
+    println!("{line}");
+}
+
+fn print_map() {
+    println!("MAP OF THE CITY OF HYATTSVILLE");
+    println!();
+    print_ruler();
+    for i in 0..4 {
+        print_ticks();
+        print_street(i);
+    }
+    print_ticks();
+    print_ruler();
+    println!();
+}
+
+fn yes_no_prompt(text: &str) -> Result<Option<bool>> {
+    println!("{text}");
+    let input = read_line()?;
+    match input.as_str() {
+        "YES" => Ok(Some(true)),
+        "NO" => Ok(Some(false)),
+        _ => Ok(None),
+    }
+}
+
+fn play_game(turns: u32, player_name: &str) -> Result<()> {
+    for _ in 0..turns {
+        let customer = fastrand::char('A'..='P');
+        println!("HELLO {player_name}'S PIZZA.  THIS IS {customer}.");
+        println!("  PLEASE SEND A PIZZA.");
+        loop {
+            println!("  DRIVER TO {player_name}:  WHERE DOES {customer} LIVE");
+
+            let x = read_number()?;
+            let y = read_number()?;
+
+            let input = x - 1 + (y - 1) * 4;
+            match char::from_u32(65 + input) {
+                Some(c) if c == customer => {
+                    println!("HELLO {player_name}.  THIS IS {customer}, THANKS FOR THE PIZZA.");
+                    break;
+                }
+                Some(c @ 'A'..='P') => {
+                    println!("THIS IS {c}.  I DID NOT ORDER A PIZZA.");
+                    println!("I LIVE AT {x},{y}");
+                }
+                // this is out of bounds in the original game
+                _ => (),
+            }
+        }
+    }
+
+    Ok(())
+}
+
+fn main() -> Result<()> {
+    print_banner();
+    let player_name = print_instructions()?;
+    let more_directions = loop {
+        if let Some(x) = yes_no_prompt("DO YOU NEED MORE DIRECTIONS")? {
+            break x;
+        } else {
+            println!("'YES' OR 'NO' PLEASE, NOW THEN,");
+        }
+    };
+
+    if more_directions {
+        println!();
+        println!("SOMEBODY WILL ASK FOR A PIZZA TO BE");
+        println!("DELIVERED.  THEN A DELIVERY BOY WILL");
+        println!("ASK YOU FOR THE LOCATION.");
+        println!("     EXAMPLE:");
+        println!("THIS IS J.  PLEASE SEND A PIZZA.");
+        println!("DRIVER TO {player_name}.  WHERE DOES J LIVE?");
+        println!("YOUR ANSWER WOULD BE 2,3");
+        println!();
+
+        if let Some(true) = yes_no_prompt("UNDERSTAND")? {
+            println!("GOOD.  YOU ARE NOW READY TO START TAKING ORDERS.");
+            println!();
+            println!("GOOD LUCK!!");
+            println!();
+        } else {
+            println!("THIS JOB IS DEFINITELY TOO DIFFICULT FOR YOU. THANKS ANYWAY");
+            return Ok(());
+        }
+    }
+
+    loop {
+        play_game(5, &player_name)?;
+        println!();
+
+        if let Some(false) | None = yes_no_prompt("DO YOU WANT TO DELIVER MORE PIZZAS")? {
+            println!();
+            println!("O.K. {player_name}, SEE YOU LATER!");
+            println!();
+            return Ok(());
+        }
+    }
+}