player_move

def move(player, direction):

    # assign player x_pos, y_pos, and hp to local variables
    x, y, hp = player

    # assign proposed new player x and y axis modifications to local variables
    proposed_x_mod, proposed_y_mod = direction

    # attempts to modify player position (either x or y depending on axis pos passed in)
    def modify_position(pos, pos_mod, hp):

        # check for good/valid/non-damaging move first
        if pos + pos_mod >= 0 and pos + pos_mod <= 9:
            pos += pos_mod # move to modified position on axis

        else: # out of bounds move detected (wall hit)
            # no matter which wall was hit, they lose hp. So let's fix that up first
            hp -= 5

            # now let's see which wall was hit and adjust player position to axis wall position
            if pos + pos_mod < 0:
                pos = 0 # they hit the 0 wall, so let's set them to the 0 position (not OoB)
            else: # no need for condition check here
                pos = 9 # they obviously hit the 9 wall instead, so let's set that position

        # return the position and hp resulting from move
        return pos, hp

    # call modify_position on axis only if there was an axis position modification proposed
    if proposed_x_mod != 0: # if it equaled 0 then the player position isn't changing on this axis
        # if there was a proposed position change, let's determine how it impacts the player
        x, hp = modify_position(x, proposed_x_mod, hp)
    if proposed_y_mod != 0: # as above but for the proposed_y_mod (checking other axis)
        y, hp = modify_position(y, proposed_y_mod, hp) 

    # return players x, y axis position and current hp after move
    return x, y, hp