Elysian Shadows

Posted: **Fri Mar 05, 2010 5:18 pm**

Hey, I've been using a graphics API called Allegro(which I'm sure we've all heard of). I hear it's pretty old, but now I want to use some file i/o(for map loading, save files, etc) and I'm not sure if I can run some useful libraries like Fstream alongside Allegro(I'll try to include fstream, but it says there is no such thing as fstream). I'm considering moving into SDL though(dunno, hear it used much more), so I'm wondering about how some of you are managing to do your file i/o with libraries like these. Maybe you know some good ways for this? Thanks.

Posted: **Fri Mar 05, 2010 5:20 pm**

Donutslayer7 wrote:Hey, I've been using a graphics API called Allegro(which I'm sure we've all heard of). I hear it's pretty old, but now I want to use some file i/o(for map loading, save files, etc) and I'm not sure if I can run some useful libraries like Fstream alongside Allegro(I'll try to include fstream, but it says there is no such thing as fstream). I'm considering moving into SDL though(dunno, hear it used much more), so I'm wondering about how some of you are managing to do your file i/o with libraries like these. Maybe you know some good ways for this? Thanks.

0.o... Well fstream is part of the C++ standard library... So if, when you attempt to compile, it says it doesn't exist, there was probably a mistake in installing whichever IDE you use...

Posted: **Fri Mar 05, 2010 5:26 pm**

yeah, that's the strange thing, when I don't include my graphics lib, Fstream includes fine

Posted: **Fri Mar 05, 2010 5:36 pm**

Donutslayer7 wrote:yeah, that's the strange thing, when I don't include my graphics lib, Fstream includes fine

Dude that's wierd! Could post some of your code?

Posted: **Fri Mar 05, 2010 10:57 pm**

alright, here's a snippet of some of my old code:

Code: Select all

#include <allegro.h>
#include <fstream>
BITMAP *buffer;
BITMAP *bax;
BITMAP *tile;
BITMAP *start;
BITMAP *character;
ofstream data;//ofstream doesn't work
int mode(0);
int tilesize = 30;
int y = 14 *tilesize;
int x = 1 * tilesize;
int xtile, ytile, xtile2, ytile2;
int dx;
int map[16][22] = {
    {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
    {1,3,3,1,1,1,3,3,1,1,1,1,1,1,3,3,3,1,3,3,1,1},
    {1,0,0,3,1,3,0,0,3,1,3,3,1,3,0,0,0,3,0,0,1,1},
    {1,0,0,0,3,0,0,0,0,3,0,0,3,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,0,2,0,0,2,0,0,0,0,0,0,0,0,0,1,1},
    {1,0,0,0,0,0,2,1,2,2,1,2,0,0,0,2,0,0,0,0,0,0},
    {1,0,0,0,0,2,1,1,1,1,1,1,2,0,2,1,2,0,0,2,1,1},
    {1,0,2,2,2,1,1,1,1,1,1,1,1,2,1,1,1,2,2,1,1,1},
    {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
};

Turns out it I had to put "fstream", not "fstream.h", but the file declarations still won't work

Posted: **Fri Mar 05, 2010 11:01 pm**

Okay, I see you declaring an 'ostream' object, but no declaration of 'using namespace std'. If you don't put that line in, then you need to specify that ostream is part of the std namespace, so: 'std::ostream'.

Posted: **Fri Mar 05, 2010 11:49 pm**

Ah, that make perfect sense, using namespace std exactly as if you were using it for iostream. Thanks, the files are loading now.

Posted: **Sat Mar 06, 2010 12:11 am**

Donutslayer7 wrote:Ah, that make perfect sense, using namespace std exactly as if you were using it for iostream. Thanks, the files are loading now.

No problem, glad I could help =D

Posted: **Sat Mar 06, 2010 4:35 am**

Remember to not use using namespace in header files.

Elysian Shadows

[SOLVED]file input/output

[SOLVED]file input/output

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Re: [SOLVED]file input/output