% Universidade Federal de Mato Grosso
% Instituto de Engenharia
% Inteligência Artificial - 2016/2
%
% Script Octave/MATLAB que deve ser utilizado para testar a implementação 
% do exercício.
% Este arquivo não deve ser alterado
%
% author: raonifst at gmail dot com



Board = zeros(6,7); % Create a new Connect Four Board

computer = 1; % computer's player id 
depth  = 5;  %5 - hard; 3 - medium; 1 - easy

player = 1;
over = 0;

while over == 0,
    
    if player == computer,
        
       fprintf('Computer\n');
        
       [ ~, best_pos ] = minimax_alpha_beta(Board, depth, player, -Inf, Inf,true);
       [Board, ~ ] = do_move(Board, best_pos, player);    
        
    else
        % human player
        
        valid_move = 0;
        while valid_move == 0, % repeat until read a valid move
            
            col = read_number(); 
            
            [Board, valid_move] = do_move(Board, col, player);
            if valid_move == 0, 
                fprintf('Invalid move\n');
            end
        end

    end
    
    disp(Board); % show move
    
    over = is_game_over(Board);
    player = opposite_player(player);
end

fprintf('********************\nFinish!\n');
if over == 3, 
    fprintf('Tie!\n');
else
    if over == computer,
        fprintf('You loose!\n');
    else
        fprintf('You win!\n');
    end
end