【Rust】○✖️ゲーム

マスを0と1で表現して、2進法の加算で判定する。

fn main() {

    println!("{:09b}", 0b111000000 & 0b000111111);
    println!("{:09b}", 0b111000000 & 0b101100010);
    println!("{:09b}", 0b111000000 & 0b111000010);
}

000000000
101000000
111000000

ちなみに、0b111000000など2進数の型はi32

use rand::Rng;

static goal:[i32; 8] = [ 0b111000000, 0b000111000, 0b000000111, 0b100100100,
            0b010010010, 0b001001001, 0b100010001, 0b001010100];

fn check(player: i32) -> bool {
    for mask in goal {
        if player & mask == mask {
            return true
        }
    }
    return false 
}

fn play(p1: i32, p2: i32) {
    if check(p2) {
        println!("{:09b}, {:09b}", p1, p2);
        return
    } 

    let board: i32 = p1 | p2;
    if board == 0b111111111{
        println!("{:09b}, {:09b}", p1, p2);
        return
    }
    let mut w = Vec::new();
    for i in 0..9 {
        if board & (1 << i) == 0 {
            w.push(i);
        }
    }
    let n = w.len() + 1;
    let mut rnd = rand::thread_rng();
    let r = rnd.gen_range(1..n);
    play(p2, p1 | (1 << r));
}

fn main() {
    play(0, 0);
}

Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.30s
Running `target/debug/rust`
010001000, 001111000

これはさっぱりわからん…