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fscanf trouble

 
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Conflict



Joined: 11 May 2005
Posts: 8
Location: UK, York
PostPosted: Sat Feb 04, 2006 9:28 am    Post subject: fscanf trouble Reply with quote
hello, I am somewhat new here but have been following PSP development here for many many months.

I have commenced a project and at the moment i am experimenting with implementing a ASE loader for the PSP.

I am currently having trouble however using fscanf to readin a single string is causing my psp to hang and shutdown.

Code:

int main(int argc, char* argv[])
{
   FILE *fd_in;
   int fd;
   //int bytes_in = 0;
   char msg[20]  = "OK";
   char data_in[128] = "";

   if(!(fd = sceIoOpen("ms0:/PSP/GAME/3dshooter/cube.ase", PSP_O_RDONLY, 0777)))
   {
       strcpy(msg, "file IO error");
   }

   fd_in = (FILE *)fd;
   fscanf(fd_in, "%s", data_in);
   ...
   ...
   ...   


With the fscanf line commented the app loads fine and enters the main render loop.

I have tried many things to resolve this to no avail.

Thanks in advance for help

::lee
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Jim



Joined: 02 Jul 2005
Posts: 487
Location: Sydney
PostPosted: Sat Feb 04, 2006 2:31 pm    Post subject: Reply with quote
You can't cast the result of sceIoOpen to a FILE *. You should use fopen() to get a FILE * instead, if you're intending to use fscanf.

Jim
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Conflict



Joined: 11 May 2005
Posts: 8
Location: UK, York
PostPosted: Sun Feb 05, 2006 6:20 am    Post subject: Reply with quote
ahh rightio, yea i got the (FILE *) casting from inspecting the PSPquake src, they defined their own fopen to return (FILE *)fd, must have missed something.

i wasn't sure if fopen was possible with PSPdev, should have tried it really what i newbie i must look. ;D

Anyway kudos Jim :>

...Been working all day with fscanf on loading a ASE file, got it working very well, only loads ASEs which are one object at the momment, loads all vertex, face and UV info and renders to screen fine. I "pushed" it with a 3000k tris ASE and still going at 60fps :>

Thanks again!
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