Re: [pygame] Moving sprites.

["Paulo Silva" <nitrofurano@xxxxxxxxx>]

about sprite.image, Surface.copy(): i almost getting the point, and i
hope not being abusing if i'd ask for a small and simple working
snippet (small as 1kb-like or less) could show us this - thanks! :-)

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On Mon, Jul 28, 2008 at 1:11 AM, Paulo Silva <nitrofurano@xxxxxxxxx> wrote:
> thanks! :-)
>
>
> On Mon, Jul 28, 2008 at 1:06 AM, René Dudfield <renesd@xxxxxxxxx> wrote:
>> make sprite.image use the same surface.
>>
>> Surfaces are not copied by default.  You need to use the
>> Surface.copy() method to create a new one.
>>
>> So just assigning the same surface will work for sharing one picture
>> with lots of sprites.
>>
>>
>> On Mon, Jul 28, 2008 at 9:33 AM, Paulo Silva <nitrofurano@xxxxxxxxx> wrote:
>>> you welcome! :-) - btw, i'm still trying to to on Pygame what i were
>>> doing on sdlBasic up to now
>>> (http://nitrofurano.linuxkafe.com/sdlbasic), stuff like how to get
>>> lots of sprites from just one picture, etc.
>>>
>>> ------
>>>
>>> On Mon, Jul 28, 2008 at 12:19 AM, Percival Kelley
>>> <percivalkelley@xxxxxxxxx> wrote:
>>>> Awesome. Thank you. That did the trick.
>>>>
>>>> On Sun, Jul 27, 2008 at 1:10 PM, Paulo Silva <nitrofurano@xxxxxxxxx> wrote:
>>>>>
>>>>> well, for now i were enjoying these ones
>>>>> http://www.cs.iupui.edu/~aharris/pygame/ch04/
>>>>>
>>>>> --------
>>>>>
>>>>> On Sun, Jul 27, 2008 at 11:38 PM,  <percivalkelley@xxxxxxxxx> wrote:
>>>>> > So I've read piman's tutorial and checked out a few others. I'm still
>>>>> > confused. I don't really understand the process of moving a sprite
>>>>> > around. I would like to use RenderUpdates and such, but I'm lost.
>>>>> >
>>>>> > I basically have a simple script that moves a ship around a background
>>>>> > (the background is an image.)
>>>>> >
>>>>> > To create the sprite I'm using:
>>>>> >
>>>>> > class Units(pygame.sprite.Sprite):
>>>>> >
>>>>> >        def __init__(self, img, loc1 = 250, loc2 = 250):
>>>>> >                pygame.sprite.Sprite.__init__(self) #start up sprites
>>>>> >
>>>>> >                #locs
>>>>> >                self.loc1 = loc1
>>>>> >                self.loc2 = loc2
>>>>> >
>>>>> >                #create sprite
>>>>> >                self.image, self.rect = load_image(img)
>>>>> >                self.rect.center = [self.loc1, self.loc2]
>>>>> >
>>>>> > I create the ship like this:
>>>>> > self.ship = Units('bship.png')
>>>>> > self.screen.blit(self.ship.image, self.ship.rect)
>>>>> >
>>>>> > To redraw the ship when it moves I'm using this:
>>>>> >
>>>>> > self.ship.loc1 = n1 #n1 and n2 are setup earlier in the code that
>>>>> > looks for key presses and sets the pixel difference
>>>>> > self.ship.loc2 = n2
>>>>> > self.ship.rect.center = [self.ship.loc1, self.ship.loc2]
>>>>> > print self.ship.rect.center
>>>>> > self.screen.blit(self.bg, (0,0))
>>>>> > self.screen.blit(self.ship.image, self.ship.rect.center)
>>>>> > pygame.display.flip()
>>>>> >
>>>>> > I'm really pretty confused at this point. I know I'm just doing
>>>>> > something stupid, but I haven't managed to get any other code working
>>>>> > to redraw the ship properly when it's moved. I don't have the code
>>>>> > from when I was doing it wrong, but basically, can someone point me in
>>>>> > the right direction to changing this over to just redraw the
>>>>> > appropriate areas?
>>>>> >
>>>>> > Thanks, and sorry this was rambling.
>>>>> >
>>>>
>>>>
>>>
>>
>