rust port

final

72_Queen/rust/src/util.rs

@@ -1,5 +1,46 @@
+use std::io;
+
+pub enum PromptResult {
+    Normal(String),
+    YesNo(bool),
+    Numeric(i32),
+}
+
+pub fn prompt(is_numeric: Option<bool>, msg: &str) -> PromptResult {
+    use PromptResult::*;
+
+    println!("{msg}");
+
+    loop {
+        let mut input = String::new();
+
+        io::stdin()
+            .read_line(&mut input)
+            .expect("**Failed to read input**");
+
+        if let Some(is_numeric) = is_numeric {
+            let input = input.trim();
+
+            if is_numeric {
+                if let Ok(n) = input.parse::<i32>() {
+                    return Numeric(n);
+                }
+                println!("PLEASE ENTER A VALID NUMBER!");
+            } else {
+                match input.to_uppercase().as_str() {
+                    "YES" | "Y" => return YesNo(true),
+                    "NO" | "N" => return YesNo(false),
+                    _ => println!("PLEASE ENTER (Y)ES OR (N)O."),
+                }
+            }
+        } else {
+            return Normal(input);
+        }
+    }
+}
+
 pub fn is_move_legal(loc: u8, mov: u8) -> bool {
-    let dt: i32 = (mov - loc).into();
+    let dt: i32 = mov as i32 - loc as i32;
 
     if dt.is_negative() {
         return false;
@@ -32,3 +73,42 @@ pub fn is_legal_start(loc: u8) -> bool {
         false
     }
 }
+
+pub fn print_gameover(win: bool, forfeit: bool) {
+    if win {
+        println!("C O N G R A T U L A T I O N S . . .\nYOU HAVE WON--VERY WELL PLAYED.");
+        println!(
+            "IT LOOKS LIKE I HAVE MET MY MATCH.\nTHANKS FOR PLAYING---I CAN'T WIN ALL THE TIME.\n",
+        );
+    } else {
+        if forfeit {
+            println!("IT LOOKS LIKE I HAVE WON BY FORFEIT.\n");
+        } else {
+            println!("NICE TRY, BUT IT LOOKS LIKE I HAVE WON.\nTHANKS FOR PLAYING.");
+        }
+    }
+}
+
+pub fn intro() {
+    println!("\n\n\t\tQUEEN");
+    println!("CREATIVE COMPUTING MORRISTOWN, NEW JERSEY\n");
+
+    if let PromptResult::YesNo(yes) = prompt(Some(false), "DO YOU WANT INSTRUCTIONS?") {
+        if yes {
+            println!(
+                r#"WE ARE GOING TO PLAY A GAME BASED ON ONE OF THE CHESS
+MOVES.  OUR QUEEN WILL BE ABLE TO MOVE ONLY TO THE LEFT,
+DOWN, OR DIAGONALLY DOWN AND TO THE LEFT.
+THE OBJECT OF THE GAME IS TO PLACE THE QUEEN IN THE LOWER
+LEFT HAND SQUARE BY ALTERNATING MOVES BETWEEN YOU AND THE
+COMPUTER.  THE FIRST ONE TO PLACE THE QUEEN THERE WINS.
+YOU GO FIRST AND PLACE THE QUEEN IN ANY ONE OF THE SQUARES
+ON THE TOP ROW OR RIGHT HAND COLUMN.
+THAT WILL BE YOUR FIRST MOVE.
+WE ALTERNATE MOVES.
+YOU MAY FORFEIT BY TYPING '0' AS YOUR MOVE.
+BE SURE TO PRESS THE RETURN KEY AFTER EACH RESPONSE."#
+            )
+        }
+    }
+}