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Python Python Collections (2016, retired 2019) Dungeon Game Hit points

Nichole "Nikki" Carnesi
Nichole "Nikki" Carnesi
7,103 Points

Hit Points challenge.... HELP!

I'm stuck. I took some time off to clear my head and I still can't figure it out. Please help!

def move(player, direction):
    x, y, hp = player
    moves = [(1, 0), (-1, 0), (0, 1), (0, -1)]
    if x == 0:
        moves.remove((1, 0))
    if x == 9:
        moves.remove((-1, 0))
    if y == 0:
        moves.remove((0, -1))
    if y == 9:
        moves.remove((0, 1))
    if direction not in moves:
        hp -= 5
    else:
        if direction == (1, 0):
            x -= 1
        if direction == (-1, 0):
            x += 1
        if direction == (0, -1):
            y -= 1
        if direction == (0, 1):
            y += 1
    return x, y, hp

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,441 Points

It tricky to get the directions and limits operating in the same direction. If I reverse the x operations it seems to pass:

def move(player, direction):
    x, y, hp = player
    moves = [(1, 0), (-1, 0), (0, 1), (0, -1)]
    if x == 0:
        moves.remove((-1, 0))  # sign flip
    if x == 9:
        moves.remove((1, 0)) # sign flip
    if y == 0:
        moves.remove((0, -1))
    if y == 9:
        moves.remove((0, 1))
    if direction not in moves:
        hp -= 5
    else:
        if direction == (-1, 0):  # sign flip
            x -= 1
        if direction == (1, 0):  # sign flip
            x += 1
        if direction == (0, -1):
            y -= 1
        if direction == (0, 1):
            y += 1
    return x, y, hp