Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

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

Posted by Cody Fisher
Cody Fisher
12,309 Points

I am receiving expected results with this code locally. Is my logic off from the expected results of the challenge?

I have run this code locally and it has returned all of the results matching what is in the examples and I even added some test cases of my own that resulted in the results I would expect from this code. Am I missing something with the requirements of the challenge?

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
    dx, dy = direction

    if x + dx < 0:
        x = 0
        hp -= 5
    elif x + dx > 9:
        x = 9
        hp -= 5
    else:
        x += dx

    if y + dy < 0:
        y = 0
        hp -= 5
    elif y + dy > 9:
        y = 9
        hp -= 5
    else:
        y += dy

    return x, y, hp

1 Answer

Steven Parker
Steven Parker
230,274 Points
Steven Parker
Steven Parker
230,274 Points

You're really close, but if movement in either dimension would hit a wall, the original position should be returned unchanged along with the lowered hit points. Modifying the position is most likely the reason the validation does not pass.