Re: [Super-tux-devel] LevelEditor Progress...

[Ricardo C. <ri...@ae...>]

 Well, I've just tried my idea... and guess what... It worked :D
 It looks like we don't need the 300 lines afterall ;)

 I'll extend that support for the others draw_part() and alike functions.

 But it seems to have this problem; when an image has an alpha value betwee=
n 0=20
and 255, the colorkey also gets with alpha in that pixel and therefore it=20
blits that pixel into the screen. Not sure how this will be solved, anyway=
=20
this is really a small issue (at least for now...).


 Just one thing, regarding the level editor, I think that bad guys (and eve=
n=20
Tux) should get semi-transparent when Foreground and Background is selected=
=2E=20
It shouldn't be also possible to apply them then.

Ricardo Cruz

Em S=C3=A1bado, 8 de Maio de 2004 00:07, o Ricardo Cruz escreveu:
>  Anyway, it was working, couldn't we just port it again?
>
>  AFAIK, you just need to create another surface, blit the surface you want
> to blit into the screen into this one, apply alpha to the temp surf and
> then just blit the temp surf into the screen. It is nothing from another
> world :) I have made the current code, and I dunno why it isn't working...
>
>  In case it is too slow, we can allways get rid of it...
>
>  And this code that can be found at draw_bg, draw_part or draw_stretched:
>   if(alpha !=3D 255)
>     SDL_SetAlpha(sdl_surface ,SDL_SRCALPHA,alpha);
> will make the surface to have that alpha forever. This code should be
> removed.
>
> Ricardo Cruz
>
> Em S=C3=A1bado, 8 de Maio de 2004 00:03, o Tobias Gl=C3=A4=C3=9Fer escrev=
eu:
> > Am Sa, den 08.05.2004 schrieb Tobias Gl=C3=A4=C3=9Fer um 0:57:
> > > Am Sa, den 08.05.2004 schrieb Ricardo Cruz um 0:03:
> > > >  Those are great news.
> > > >  There is only this issue that I think that should get priority:
> > > > - the SDL frontend doesn't seem to support Alpha when blitting
> > > > surfaces. i think this worked before... anyway, when looking at
> > > > Background, for instance, the Foreground and Active stuff just
> > > > dissapears...
> > > >
> > > > Ricardo Cruz
> > >
> > > Actually, as I stated in another mail, SDL software rendering isn't
> > > able to do alpha on alpha surface blitting. :(
> > > For the same reason the minimap is a OpenGL only feature, too.
> > >
> > > Greetz...
> > >
> > > Tobias Gl=C3=A4=C3=9Fer
> >
> > Before another one comes up with it now. Yes, you could write your
> > own blitting method for this purpose. But on the on hand it's pretty
> > tough to write it. (Or wouldn't the SDL folks provide it in their
> > renderer, if it was easy to implement?) And on the other hand the
> > resulting blitting method would be a very slow one.
> >
> > Can someone think of an alternative solution for the editor?
> >
> > Greetz...
> >
> > Tobias Gl=C3=A4=C3=9Fer

=2D-=20
"Yo baby yo baby yo."
=2D- Eddie Murphy