Re: [pygame] [pygame ] Having trouble with RenderUpdate

[KKarasu <catsareninja@xxxxxxxxx>]

Hi Hugo.

Yeah, what u said it was right mutch easier doing self.rect.topleft 
being self.rect= image.get_rect()
ok. so i`ve done that.
Thanks on that one, lol i was planing something way to complicated.

So it is solved thanks i realized i must call the group.clean to work 
right?

so now i have this:

class Arrow(pygame.sprite.Sprite):
    def __init__(self,a=0,b=0):
           #iniciates position and image
           pygame.sprite.Sprite.__init__(self)
           self.image=pygame.image.load("Arrow.png")
           self.posicao=[a,b]
           self.rect=self.image.get_rect()
      
def start(self):
       "blits arrow in the screen in position and update"
       R_up.clean(screen,current_background_image)               
#clears the sprite
       self.rect.topleft=((self.posicao[0],self.posicao[1]))            
#gets position
       
a=R_up.draw(screen)                                                      
#blits to screen
       
pygame.display.update(a)                                                
#updates the 2 rect, the former from clear and the new one


Thanks a lot guys.
I think i got it.
Is this how it is suposed to work right?
It works fine the arrow now, then i press up or down it moves acordingly 
and it delets the former.




Hugo Arts wrote:
> using self.rect = image.get_rect() gets you a rect with the correct 
> size. you can use self.rect.topleft = (100, 200) to set the position, 
> that will save you some lines.
>  
> saw this second e-mail only after replying to the first one. sorry.
>
> On Mon, Sep 15, 2008 at 9:16 AM, KKarasu <catsareninja@xxxxxxxxx 
> <mailto:catsareninja@xxxxxxxxx>> wrote:
>
>     Thanks Andy.
>
>     I think i understood.the get rect always returned at (0,0) and
>     that was a problem.
>     so basicaly my code did was: create surface at 0,0 and move it to
>     posicao=[x,y] (yes posicao is position i used my own language
>     variables and forgot to translate, sorry)
>     then draw it with group.draw, updating the (0,0) surface,right?
>     what happened was this:
>     http://kkarasu.deviantart.com/art/second-title-screen-97971437
>     #tìs my devart site, it got the screen shot there
>
>     So i need to keep track of where the surface is at a moment.
>     shall i create an artificial rect class?
>
>     Example:
>
>     class Arrow(pygame.sprite.Sprite):
>         #this is the possition of the sprite and size
>         self.x = 100
>         self.y=  200
>         self.height = 90
>         self.width = 70
>         self.rect= pygame.Rect(self.x,self.y,self.width,self.height)
>
>         def DRAW(self):
>                        a=R_up.draw(screen) #this will use .draw in the
>     R_up== RenderUpdate group with arrow in it using suposedly the
>     self.rect to track position
>                        pygame.display.update(a)
>
>       #to move the arrow i just have to update the self.x and self.y
>     values and call self.rect again to update its values
>
>     would this work? or theres a better option?
>     I thinking loud here, im gonna try it now.