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

this code is working correctly but throwing error here

def move(player, direction): x, y, hp = player x1, y1 = direction if (x == 0 or x==9) and (y!=0 and y!=9) : hp= hp-5 y = y+y1 elif (y==0 or y==9) and (x!=0 and x!=9): hp = hp-5 x = x+x1 elif (y==0 or y==9) and (x==0 or x==9): hp = hp -5
else: x= x+x1 y=y+y1

return x, y, hp
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
    x1, y1 = direction
    if (x == 0  or x==9) and (y!=0 and y!=9) :
        hp= hp-5
        y = y+y1
    elif (y==0 or y==9) and (x!=0 and x!=9):
        hp = hp-5
        x = x+x1
    elif (y==0 or y==9) and (x==0 or x==9):
        hp = hp -5       
    else:
        x= x+x1
        y=y+y1

    return x, y, hp

1 Answer

Steven Tagawa
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Steven Tagawa
Python Development Techdegree Graduate 14,438 Points

I think the biggest problem is that your code isn't testing the right values. The challenge is to test to see if the new coordinates would be out of bounds, but your code is testing x and y, which are the original coordinates. And since the original coordinates are always going to be valid, your if expressions are never going to work out right. To see if the new coordinates are out of bounds, you would need to test (x+x1) and (y+y1) instead of x and y.

(Also, 0 and 9 are in bounds, so x or y being exactly 0 or 9 shouldn't subtract from hp. Only values below 0 or above 9 should reduce the hp variable. So (x+x1)<0 would probably work better than x == 0. It would also catch numbers that are even further out of bounds, like -1, -2, etc.)