tic-tac-toe.hm

// Created By Ali (HT member)


const array board = [' ', ' ', ' ',
                     ' ', ' ', ' ',
                     ' ', ' ', ' '];

const players = ["X", "O"];
string player = players[0];

const matrix winPatterns = M[0, 1, 2] | [3, 4, 5] | [6, 7, 8] // Rows
                       	   |[0, 3, 6] | [1, 4, 7] | [2, 5, 8] // Columns
                       	   |[0, 4, 8] | [2, 4, 6];            // Diagonals

function main() {
	while(true) {
    	int L = -1;
		var Loc = null;

		terminal.clear();
		drawBoard();

		do {
			println(F"#{Loc} is a wrong Location") when Loc is not null;
			Loc = input(F"Player #{player} choose (1 - 9): ").trim();

		} while (not (Loc.matches("\\d+") and ((Loc as int - 1 => L) > -1) and availableLocation(L)));

		board[L] = player;

		if (wins(player)) {
            terminal.clear();
            drawBoard();

			println(F"Player #{player} Wins!");
			break;

		} else if (isTie()) {
            terminal.clear();
            drawBoard();

			println("Game is Tie!");
			break;
		}

		switchPlayer();
	}
}

function switchPlayer() {
	player = (players[1] when player ~= players[0] else players[0]);
}

boolean wins(string plyr) {
	for (int i = 0; i < winPatterns.rows; i++) {
		var pattern = winPatterns[i];
        return when board[pattern[0]] === plyr and board[pattern[1]] === plyr and board[pattern[2]] === plyr : true;
	}

    return false;
}

boolean isTie() {
	for (int i = 0; i < 9; i++)
        if (board[i] === " ")
            return false;

    return true;
}

boolean availableLocation(int L) {
	return (not (L < 0 or L > board.length)) and board[L] === " ";
}

function drawBoard() {
	println(F`
         #{board[0]} ║ #{board[1]} ║ #{board[2]}
        ═══╬═══╬═══
         #{board[3]} ║ #{board[4]} ║ #{board[5]}
        ═══╬═══╬═══
         #{board[6]} ║ #{board[7]} ║ #{board[8]}
    `);
}

main();