fix diagonals and user input

src/agent.rs

@@ -1,4 +1,6 @@
 use crate::{board::Board, piece::Piece};
+use std::io;
+use std::io::prelude::*;
 
 pub trait Agent {
     fn next_move(&mut self, board: &Board) -> Option<(usize, usize)>;
@@ -12,7 +14,23 @@ pub struct ManualAgent {
 
 impl Agent for ManualAgent {
     fn next_move(&mut self, _: &Board) -> Option<(usize, usize)> {
-        todo!("user input not implemented")
+        let stdin = io::stdin();
+        let mut input = String::new();
+        let mut got: Option<(usize, usize)> = None;
+        while got.is_none() {
+            input.clear();
+            stdin.lock().read_line(&mut input).ok()?;
+            let numbers = input
+                .split_whitespace()
+                .map(|i| usize::from_str_radix(i, 10).ok())
+                .collect::<Option<Vec<usize>>>();
+            if let Some(numbers) = numbers {
+                if numbers.len() == 2 {
+                    got = Some((numbers[0], numbers[1]));
+                }
+            }
+        }
+        got
     }
 
     fn name(&self) -> &'static str {
@@ -23,3 +41,9 @@ impl Agent for ManualAgent {
         self.color
     }
 }
+
+impl ManualAgent {
+    pub const fn new(color: Piece) -> Self {
+        Self { color }
+    }
+}

src/board.rs

@@ -14,7 +14,7 @@ impl fmt::Display for Board {
         for i in 0..BOARD_SIZE {
             writeln!(f, " {}", horiz_sep_line)?;
 
-            write!(f, "|")?;
+            write!(f, "{}|", i)?;
             for j in 0..BOARD_SIZE {
                 write!(
                     f,
@@ -117,7 +117,17 @@ impl Board {
         // handle diagonals
         chains.extend(
             i_chain
+                .clone()
                 .into_iter()
+                .zip(j_chain.clone())
+                .map(|(i_vec, j_vec)| i_vec.into_iter().zip(j_vec).collect()),
+        );
+
+        // handle top right diagonals too
+        chains.extend(
+            i_chain
+                .into_iter()
+                .rev()
                 .zip(j_chain)
                 .map(|(i_vec, j_vec)| i_vec.into_iter().zip(j_vec).collect()),
         );
@@ -240,4 +250,16 @@ mod test {
             );
         }
     }
+
+    #[test]
+    fn diag_capture() {
+        let mut board = Board::new().starting_pos();
+
+        assert_eq!(board.place(2, 4, Piece::White), Ok(()), "{}", board);
+        assert_eq!(board.place(2, 3, Piece::Black), Ok(()), "{}", board);
+
+        assert_eq!(board.place(2, 2, Piece::White), Ok(()), "{}", board);
+
+        assert_eq!(board.place(2, 5, Piece::Black), Ok(()), "{}", board);
+    }
 }

src/main.rs

@@ -1,3 +1,4 @@
+use agent::ManualAgent;
 use complexagent::ComplexAgent;
 use game::Game;
 use piece::Piece;
@@ -11,7 +12,8 @@ mod piece;
 
 fn main() {
     let player1 = ComplexAgent::new(Piece::Black);
-    let player2 = ComplexAgent::new(Piece::White);
+    // let player2 = ComplexAgent::new(Piece::White);
+    let player2 = ManualAgent::new(Piece::White);
     let mut game = Game::new(Box::new(player1), Box::new(player2));
     game.game_loop();
 }