Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

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

can someone explain this problem, I have been trying to picture this problem in my mind but I can not.

if you can answer step by step will be more than awesome. Thank you

movement.py
# EXAMPLES:
# move((1, 1, 10), (-1, 0)) => (0, 1, 10)
# move((0, 1, 10), (-1, 0)) => (0, 1, 5)
# move((0, 9, 5), (0, 1)) => (0, 9, 0)

def move(player, direction):
    x, y, hp = player
    xx,yy =direction
    if 9 > x > 0 == -1
        x = x-1
    if 0 >= x > 9     
    return x, y, hp

1 Answer

Christopher Shaw
seal-mask
PLUS
.a{fill-rule:evenodd;}techdegree seal-36
Christopher Shaw
Python Web Development Techdegree Graduate 58,236 Points

I don't like to give away the answer, but to break it down:

def move(player, direction):
    # unpack the player and move
    x, y, hp = player
    mx, my = direction

    # apply the move to the player
    x = x + mx
    y = y + my

    # test if the player has gone outside the bounds, all four sides
    # if so, set them at the bound and reduce the hit points
    if x > 9:
        x = 9
        hp = hp - 5

    if y > 9:
        y = 9
        hp = hp - 5

    if x < 0:
        x = 0
        hp = hp - 5

    if y < 0:
        y = 0
        hp = hp - 5

    # Return the player
    return x, y, hp

Thank you, it helps me a lot. I can see now the logic behind and the correlation between the place of the player and the movement.