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More AI tweaks

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This commit is contained in:
Stephen Seo 2022-03-10 16:44:01 +09:00
parent d8377d280a
commit 38e7772d4f
1 changed files with 14 additions and 1 deletions
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15
front_end/src/ai.rs
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@ -1,8 +1,9 @@
use std::collections::BTreeMap;
use crate::constants::{AI_EASY_MAX_CHOICES, AI_NORMAL_MAX_CHOICES, COLS, ROWS};
use crate::game_logic::check_win_draw;
use crate::random_helper::get_seeded_random;
use crate::state::{BoardState, BoardType, Turn};
use crate::state::{board_deep_clone, BoardState, BoardType, Turn};
#[derive(Copy, Clone, Debug, PartialEq, Eq)]
pub enum AIDifficulty {
@ -190,6 +191,18 @@ fn get_utility_for_slot(player: Turn, slot: SlotChoice, board: &BoardType) -> Op
}
}
// check if placing a token here allows the opposing player to win
if idx >= COLS as usize {
let cloned_board = board_deep_clone(board);
cloned_board[idx].replace(player.into());
cloned_board[idx - (COLS as usize)].replace(player.get_opposite().into());
if let Some((state, _)) = check_win_draw(&cloned_board) {
if state == player.get_opposite().into() {
utility *= 0.1;
}
}
}
Some(utility)
}