[SDL] SDL Surface Array

[Brønnum-Hansen]

David Olofson <david at olofson.net> wrote:
> On Saturday 21 February 2004 19.18, Brønnum-Hansen wrote:
> [...]
> > > So, use arrays of *pointers* to SDL_Surfaces instead.
> >
> > Okay, I've read about pointers and understand them.
> > But I still don't understand how I should use them here.
> > Because, the pointers needs a type, don't they?
> 
> A pointer *has* a type; it's a pointer. Actually, it's also
> a pointer 
> to something; in this case a pointer to an SDL_Surface
> struct - or 
> "SDL_Surface *", expressed in C/C++.
> 
> 
> > Please, could I get a short example?
> 
> //The surfaces
> SDL_Surface *surfaces[8];
> 
> //Load graphics
> surfaces[0] = IMG_Load("picture1.png");
> surfaces[1] = IMG_Load("picture2.png");
> surfaces[2] = IMG_Load("picture3.png");
> ...
> surfaces[7] = IMG_Load("picture8.png");
> //(Add error checking!)
> 
> //Do kewl stuff
> ...
> 
> //Free surfaces
> for(int i = 0; i < 8; ++i)
> 	SDL_FreeSurface(surfaces[i]);
> 
> 
> [...]
> > I really hope you don't consider this as off-topic because
> I really
> > need this help and don't know where I'm supposed to get
> it, if not
> > here.
> 
> It *is* off-topic, as it's not specific to SDL in any way
> whatsoever. 
> We're talking about very basic C/C++ stuff. If you've read
> something 
> that actually explains pointers in a comprehensible way,
> this stuff 
> should be quite obvious.
> 
> Google comes up with countless hits on books and stuff about
> C and C++ 
> for beginners, and I guess there are a few on-line resources
> as well, 
> though I didn't find one right away. I'd recommend getting
> one of 
> those books anyway, though I don't know which ones are best.
> (The one 
> I learnt C from was in swedish, and has no translations
> AFAIK. Not 
> *that* far form danish, but you have to be pretty much
> fluent in the 
> language for this kind of litterature.)

Yes it is. And it was actually what I did before asking here. But I made an error which gave me a lot of errors when compiling which made me think that I had done something wrong. It was just a stupid error.
I apologize...

Thank you for your help. 

> //David Olofson - Programmer, Composer, Open Source
> Advocate
> 
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