[pygame] Extending Surface Class

[ERName]

Is it possible to extend the surface class? Every time I do the
surface ends up dieing somehow right after it is created... I may just
be doing it in the wrong way, though. The main point is to override
the __str__() method, so if you know another way besides extending
pygame.Surface, I'd be happy to hear it.


class ExtendedSurface(pygame.Surface):

def __init__(self, surface, string):
pygame.Surface.__init__(surface, surface.get_size()) #The docs
say to include a size, etc. but that just gives me too many values to
unpack errors.
self.string = string

def __str__(self):
return self.string



Thanks!

Re: [pygame] Extending Surface Class

[DR0ID]

Hi

I would write a wrapper instead of inheriting from Surface because 
Surface is a C object.


class MySurface(object):
   def __init__(self):
   self._sruf = Surface()

I know, you would have to wrap all methods, but maybe this could be done 
using setattr.


~DR0ID

ERName schrieb:

Is it possible to extend the surface class? Every time I do the
surface ends up dieing somehow right after it is created... I may just
be doing it in the wrong way, though. The main point is to override
the __str__() method, so if you know another way besides extending
pygame.Surface, I'd be happy to hear it.


class ExtendedSurface(pygame.Surface):

def __init__(self, surface, string):
pygame.Surface.__init__(surface, surface.get_size()) #The docs
say to include a size, etc. but that just gives me too many values to
unpack errors.
self.string = string

def __str__(self):
return self.string



Thanks!

  

[pygame] Re: Extending Surface Class

[ERName]

Well, I appreciate your reply, but I don't really understand what you
mean by wrapper... and this mysterious _sruf attribute?

The part about being a C object I understand, though, and I was afraid
of that. If there's not any easy way of doing this, I can just live
with the default __str__(), I guess.

Re: [pygame] Re: Extending Surface Class

[Tyler Laing]

By wrapper, he means writing a python class that has an internal member,
_sruf, which is the surface in question. Then you can override the __str__
function with your own. Otherwise, you just call _sruf's own methods and
attrs

-Tyler

On Sat, Jul 25, 2009 at 2:48 PM, ERName easily.remembered.n...@gmail.comwrote:

 Well, I appreciate your reply, but I don't really understand what you
 mean by wrapper... and this mysterious _sruf attribute?

 The part about being a C object I understand, though, and I was afraid
 of that. If there's not any easy way of doing this, I can just live
 with the default __str__(), I guess.




-- 
Visit my blog at http://oddco.ca/zeroth/zblog

Re: [pygame] Extending Surface Class

[jug]

You have to call pygame.Surface.__init__ with your surface object first 
(self),

then pass further arguments like size:

class ExtendedSurface(pygame.Surface):
   def __init__(self, string):
   pygame.Surface.__init__(self, (100, 100))
   self.fill((220,22,22))
   # ...
 



ERName wrote:

Is it possible to extend the surface class? Every time I do the
surface ends up dieing somehow right after it is created... I may just
be doing it in the wrong way, though. The main point is to override
the __str__() method, so if you know another way besides extending
pygame.Surface, I'd be happy to hear it.


class ExtendedSurface(pygame.Surface):

def __init__(self, surface, string):
pygame.Surface.__init__(surface, surface.get_size()) #The docs
say to include a size, etc. but that just gives me too many values to
unpack errors.
self.string = string

def __str__(self):
return self.string



Thanks!

  

[pygame] Re: Extending Surface Class

[ERName]

Oh thanks for the translation :)

Well, the whole point was to make the process automatic, and my
program not even know that the class was different, so a wrapper
attribute kind of defeats the purpose. It's alright, though, I can
just live with the standard Surface __str__(). No biggie.

Thanks for the help, though, guys!