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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. # Can i get some help here please?

so... i'm stuck here since yesterday and i can't figure it out what to put inside the if block... i guess i should sum x and y from player argument.... can you help me out?

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)

import operator

limit = [(0, 0), (1, 0), (2, 0), (3, 0), (4, 0), (5, 0), (6, 0), (7, 0), (8, 0),
(0, 1), (1, 1), (2, 1), (3, 1), (4, 1), (5, 1), (6, 1), (7, 1), (8, 1),
(0, 2), (1, 2), (2, 2), (3, 2), (4, 2), (5, 2), (6, 2), (7, 2), (8, 2),
(0, 3), (1, 3), (2, 3), (3, 3), (4, 3), (5, 3), (6, 3), (7, 3), (8, 3),
(0, 4), (1, 4), (2, 4), (3, 4), (4, 4), (5, 4), (6, 4), (7, 4), (8, 4),
(0, 5), (1, 5), (2, 5), (3, 5), (4, 5), (5, 5), (6, 5), (7, 5), (8, 5),
(0, 6), (1, 6), (2, 6), (3, 6), (4, 6), (5, 6), (6, 6), (7, 6), (8, 6),
(0, 7), (1, 7), (2, 7), (3, 7), (4, 7), (5, 7), (6, 7), (7, 7), (8, 7),
(0, 8), (1, 8), (2, 8), (3, 8), (4, 8), (5, 8), (6, 8), (7, 8), (8, 8)]

def move(player, direction):
x, y, hp = player

if player in limit:
if player not in limit:
print("it's not a valid command")
hp -= 5

return x, y, hp
``` I couldn't update the question, so i'm posting the challenge here...

Our game's player only has two attributes, x and y coordinates. Let's practice with a slightly different one, though. This one has x, y, and "hp", which stands for hit points.

Our move function takes this three-part tuple player and a direction tuple that's two parts, the x to move and the y (like (-1, 0) would move to the left but not up or down).

Finish the function so that if the player is being run into a wall, their hp is reduced by 5. Don't let them go past the wall. Consider the grid to be 0-9 in both directions. Don't worry about keeping their hp above 0 either.

You haven't changed the original x, y coordinates.

```x1, y1 = direction
# change x, y values according to direction
x, y = x + x1, y + y1
```

Then

```    if x > 9:
hp -= 5
x -= 1
elif x < 0:
hp -= 5
x += 1
```

Do the same for y-value and return x, y, hp

Here is my solution as an example:

```def move(player, direction):
x, y, hp = player
x_move, y_move = direction
# here we change x, y according to direction
x, y = x + x_move, y + y_move
# then we check if x or y is some invalid integer
if x > 9:
# if it is an invalid integer, like 10 or -1, we remove 5 health points and return the player to a valid integer
# in this cases, x is greater than 9, ie 10. Therefore, we remove 5 hp and make x = 9
hp -= 5
x -= 1
elif x < 0:
hp -= 5
x += 1
elif y > 9:
hp -= 5
y -= 1
elif y < 0:
hp -= 5
y += 1
```

If you have any other questions I will update my answer, if you do not have any other questions:

Remember to upvote and to choose the best answer so that your question receives a checkmark in forums.

Kind regards,

Leo ```def move(player, direction):
x, y, hp = player
a,b = direction
x += a
y += b
if x not in range(10):
x -= a
y -= b
hp -= 5
elif y not in range(10):
x -= a
y -= b
hp -= 5
return x, y, hp
```
```def move(player, direction):
x, y, hp = player
dx, dy= direction
if dx !=0:
x+=dx
if x not in range(10):
hp-=5
x-=dx
if dy !=0:
y+=dy
if y not in range(10):
hp-=5
y-=dy
return x, y, hp
```