Re: [pygame] move problems

[pymike <pymike93@xxxxxxxxx>]

Here's an example:

UP    = 0
DOWN  = 1
LEFT  = 2
RIGHT = 3

keys = [0, 0, 1, 0] #up, down, left, and right keys, respectively. 0 stands for 'not pressed', 1 stands for 'is pressed'.

if LEFT in keys:
  print True

Now, it won't work, because "2" is not in the keys list.

if keys[LEFT]:
   print True

This works, because you're checking to see if the 3rd numeral in the list is positive/true.

HTH

On Wed, Feb 11, 2009 at 5:46 PM, Yanom Mobis <yanom@xxxxxxxxxxxxxx> wrote:

Hmm. now i remember how it's done. the part about pygame.key.get_pressed returning 1's and 0's makes sense, but I just don't get why

if key[K_UP]:

works if

if K_UP in key:

doesn't.

--- On Tue, 2/10/09, maniaxx@xxxxxx <maniaxx@xxxxxx> wrote:

From: maniaxx@xxxxxx <maniaxx@xxxxxx>
Subject: Re: [pygame] move problems
To: pygame-users@xxxxxxxx
Date: Tuesday, February 10, 2009, 7:22 PM


-----Inline Attachment Follows-----

hi,

K_UP has the value 273 and pygame.key.get_pressed() returns a tuple where the
n'th value is 1 if the n'th key was pressed.
This should work:

if key[K_UP]:
    .....

> this code is in my main game loop
>
> key = pygame.key.get_pressed() #create a key index
>
>     if K_UP in key: #check if the up arrow is pressed
>         redcar.speed = (0, -2)
>     else:
>         redcar.speed = (0, 0)
>
>     redcar.rect = redcar.rect.move(redcar.speed) #move redcar by speed
>
> but pressing the up arrow doesn't move the sprite.

-- 
- pymike
"Python eggs me on."