minimax_alpha_beta/drivers/
tic_tac_toe.rs

1use crate::games::TicTacToe;
2use crate::strategy::alpha_beta_minimax::AlphaBetaMiniMaxStrategy;
3use crate::strategy::game_strategy::GameStrategy;
4
5/// Read input.
6fn get_input() -> String {
7    let mut buffer = String::new();
8    std::io::stdin().read_line(&mut buffer).expect("Failed");
9    buffer
10}
11
12/// Play a game of any size in a REPL against the engine.
13/// The default depth of 6 should make the
14/// engine reasonably fast.
15pub fn play_tic_tac_toe_against_computer(size: usize) {
16    play_tic_tac_toe_against_computer_with_depth(size, 6)
17}
18
19/// Play a game of any size in a REPL against the engine.
20/// The higher the depth, the longer it takes and
21/// the more accurately the engine performs.
22pub fn play_tic_tac_toe_against_computer_with_depth(size: usize, depth: i64) {
23    let mut ttt = TicTacToe::new(size);
24    loop {
25        println!("Board:\n{}", ttt);
26        println!("\n");
27
28        if ttt.is_game_complete() {
29            println!("Game is complete.");
30            if ttt.is_game_tied() {
31                println!("Game Tied!");
32                break;
33            } else {
34                println!("{} wins!", ttt.get_winner().unwrap());
35                break;
36            }
37        }
38
39        let example_num: i64 = 7;
40        println!(
41            "Enter a move. (e.g. '{}' represents (row: {}, col: {}) : ",
42            example_num,
43            example_num as usize / size,
44            example_num as usize % size
45        );
46        let s = get_input().trim().parse::<usize>();
47        let n = s.unwrap_or(usize::MAX);
48
49        if n == usize::MAX {
50            break;
51        }
52        println!(
53            "Move played by you: {} (i.e. {}, {})",
54            n,
55            n / size,
56            n % size
57        );
58        ttt.play(&n, true);
59        let move_found = ttt.get_best_move(depth as i64, true);
60        if move_found > (ttt.size * ttt.size) {
61            println!("Game is complete.");
62            if ttt.is_game_tied() {
63                println!("Game Tied!");
64                break;
65            } else {
66                println!("{} wins!", ttt.get_winner().unwrap());
67                break;
68            }
69        }
70        println!(
71            "Move played by AI: {} (i.e. {}, {})",
72            move_found,
73            move_found / size,
74            move_found % size
75        );
76        ttt.play(&move_found, false);
77    }
78}
minimax_alpha_beta/drivers/tic_tac_toe.rs

minimax_alpha_beta/drivers/
tic_tac_toe.rs
