Question

Say I have a list like so:

board = 
[[0, 0, 0, 0, 0,], 
[0, 0, 0, 0, 0,], 
[0, 0, 0, 0, 0,], 
[0, 0, 0, 0, 0,], 
[0, 0, 0, 0, 0,]

that represents spaces on a 2D board.
If player one goes, it will change to 1.
If player two goes, it will change to 2.

Win conditions are: if a row or column is completely filled, or diagonally.

Here are my functions for horizontal or vertical winners:

def horizontal_winner(board, boxes):
    '''
    function will find if the horizontal win conditions apply
    given 2 inputs. the board, a list and the number of boxes
    - board - the 2D board of the game
    - boxes - number of boxes per side
    ''' 
    for i in range(boxes):
        player_1 = 0
        player_2 = 0
        for j in range(boxes):
            if board[i][j] == 1:# first iteration - [1, 0, 0, 0, 0]
                player_1 += 1
                print("p1: " + str(player_1))
            elif board[i][j] == 2:# first iteration - [2, 0, 0, 0, 0]
                player_2 += 1
                print("p2: " + str(player_2))
        if player_1 == boxes:
            return True
        elif player_2 == boxes:
            return False


def vertical_winner(board, boxes):
    '''
    function will find if the vertical win conditions apply
    given 2 inputs. the board, a list and the number of boxes per side
    - board - the 2D board of the game
    - boxes - number of boxes per side
    '''
    for i in range(boxes):
        player_1 = 0
        player_2 = 0 
        for j in range(boxes):
            if board[j][i] == 1:# first iteration - [1, 0, 0, 0, 0]
                player_1 += 1
            elif board[j][i] == 2:# first iteration - [2, 0, 0, 0, 0]
                player_2 += 1
        if player_1 == boxes:
            return True
        elif player_2 == boxes:
            return False

How would I check diagonally?

Answer 1

First of all, recognize that there are only 2 diagonals. And the coordinates of each box on them is either (i, i) or (boxes-i-1, i) for some i in range(boxes). That should help you figure it out.