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

Ollie Webster
Ollie Webster
5,035 Points
Posted by Ollie Webster
Ollie Webster
5,035 Points

I am not getting the right movement results!

Apparently this is not passing because I am not getting the right movement results. The hp decrement works fine when the player crashes, and the movement results seem fine in a separate workspaces window. Any suggestions?

The only thing I can think of is if it wants me to move the x or y even if only the other one would cause a crash. i.e. trying to move in direction (-1, 1) from position (0, 0). Should this not move at all or just permit the y move to 1?

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
    x_move, y_move = direction
    if not (0 <= x + x_move <= 9) or (0 <= y + y_move <= 9):
        hp = hp - 5
    else:
        x = x + x_move
        y = y + y_move
    return x, y, hp

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

In programming, comparisons must be done individually and combined with logical operators, so where an expression like this might make sense in mathematics:

   (0 <= x + x_move <= 9)

the program equivalent would be:

    (0 <= x + x_move and x + x_move <= 9)

Also, it might help make things less complicated and reduce the chance for errors if you restate the comparisons so you don't need to use "not". For example: "not a <= b" is the same thing as just "a > b"