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Thread: minimax for dot and box game

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    Default minimax for dot and box game

    Hello all, new poster.

    i need help with a dot and box game i am trying to do.

    I understand how minimax works and understand how the tic-tac-toe process works but i cannot figure it out for the dot and box game. I would like to know how to return
    a horizontal/vertical, column, row but cannot figure it out. in TTT you only get to input in a row/column but with d and b you have to add the dash in north/south/east/west.

    any help would be great.

    Nick


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: minimax for dot and box game

    how to return a horizontal/vertical, column, row
    Define a class to hold what needs to be returned and return an instance of it.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: minimax for dot and box game

    so if i have this code
    //While the game is active
    while (!((msg[0] == GameSocket.CLOSING) || (msg[0] == GameSocket.GAME_OVER))) {

    do {// want to change this to MINIMAX instead of random
    //play randomly
    int HorV, row, col;
    HorV = Math.random() < 0.5 ? 0 : 1;
    if (HorV == 0) { //Play horizontal Horizontal
    row = (int) (Math.random()*(size+1));
    col = (int) (Math.random()*(size));
    } else { //Play vertical
    row = (int) (Math.random()*(size));
    col = (int) (Math.random()*(size+1));
    }
    //Send move
    gs.sendMove(HorV, row, col);
    //Read result
    msg = gs.readMessage();
    //Read next message
    msg = gs.readMessage();
    } while (msg[0] == GameSocket.PLEASE_PLAY);

    //Then wait for my turn
    while (!((msg[0] == GameSocket.PLEASE_PLAY) || (msg[0] == GameSocket.CLOSING) || (msg[0] == GameSocket.GAME_OVER))) {
    msg = gs.readMessage();

    in the code above i want to change from random to MINIMAX with int HorV, row, col; being passed.

    all i would need to do is make a minimax class and pass those parameters to the rest of the code? am i going in the right direction?

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: minimax for dot and box game

    Please edit your post and wrap your code with code tags:
    [code=java]
    YOUR CODE HERE
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: minimax for dot and box game

    do {
     
    //play randomly
    int HorV, row, col;
    HorV = Math.random() < 0.5 ? 0 : 1;
    if (HorV == 0) { //Play horizontal Horizontal
    row = (int) (Math.random()*(size+1));
    col = (int) (Math.random()*(size));
    } else { //Play vertical
    row = (int) (Math.random()*(size));
    col = (int) (Math.random()*(size+1));
    }
    //Send move
    gs.sendMove(HorV, row, col);
    //Read result
    msg = gs.readMessage();
    //Read next message
    msg = gs.readMessage();
    } while (msg[0] == GameSocket.PLEASE_PLAY);
     
    //Then wait for my turn
    while (!((msg[0] == GameSocket.PLEASE_PLAY) || (msg[0] == GameSocket.CLOSING) || (msg[0] == GameSocket.GAME_OVER))) {
    msg = gs.readMessage();

    sorry for last. this is just an extract of the rest of the code i have.

  6. #6
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    Default Re: minimax for dot and box game

    The code has lost its formatting. There isn't any indentations for nested statements.

    make a minimax class and pass those parameters to the rest of the code
    That sounds like what I was talking about.
    If you don't understand my answer, don't ignore it, ask a question.

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