TTF Loading Failing

mumu1000

Hello Everybody !
I'm new to Allegro Programming (and programming in general ) and i get an error i don't even know the meaning of

I Just want to make a "Hello World" test program, everything works fine, until i try to load a ttf font (it worked with the builtin font).

#SelectExpand
  1
  2#include <iostream>
  3#include <string>
  4#include "allegro.h"
  5#include "allegro_color.h"
  6#include "allegro_font.h"
  7#include "allegro_ttf.h"
  8
  9int main(int argc, char **argv)
 10{
 11    bool allegroIsWorking = al_init();
 12    bool alfontIsWorking = al_init_font_addon();
 13    bool alTTFIsWorking = al_init_ttf_addon();
 14    if(allegroIsWorking && alfontIsWorking && alTTFIsWorking)
 15    {
 16        cout << "It Works\n";
 17    }
 18    ALLEGRO_DISPLAY * Ecran = al_create_display(1000,500);
 19    ALLEGRO_FONT * font = al_load_ttf_font("Roboto-Bold.ttf",70,0);
 20    al_clear_to_color(al_map_rgb(0,0,0));
 21    al_draw_text(font,al_map_rgb(255,255,255), 2,2,0,"Hello world");
 22    al_flip_display();
 23        
 24    
 25    return 0;
 26}

There are no compilation errors.
The TTF file "Roboto-Bold.ttf" is in the program folder.
When i use "al_create_builtin_font" instead of "al_load_ttf_font" it works perfectly.
At runtime, the debug console displays "It Works" and creates the display before crashing.
The crash message displayed in the console is:

Assertion failed!

Program: C:\Users\PathToMyProgam\program.exe
File: C:/dev/allegro_winpkg/universal/allegro/addons/font/text.c, Line 79

Expression: font

Please, can someone tell me what messes everything up ? :'( :'( :'(
2 hours i've been trying to solve this without success :-X

Thank you very much !!!

Edit:
After "al_laod_ttf_font" font pointer is null, so it means it doesn't find the font, but i double checked and the ttf file is in the exe folder... :-/ :-/
Any ideas ?

Edit Edit:
I found the problem, but its still really really weird:

I use code::blocks, and when i run the program from code::blocks, it crashes.
But, when i run the program directly from the .exe file in the bin/debug folder of my project... IT WORKS !

I actually have no idea what caused this bug tho, and i would be interested if someone had an idea

Edgar Reynaldo

Short answer - check the current working directory.

Long answer - change the directory to the one where your executable is, and THEN load your font.

mumu1000

Thank you very much !
Its weird the working directory isnt the good one by default...

Have a good day ^^

Edgar Reynaldo

The working directory is where ever you ran the program from. There's a setting in CB that lets you change the executable's current working directory.

{"name":"611416","src":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/e\/a\/ea1a752635f9cb273e082b13c8ff3b99.png","w":877,"h":747,"tn":"\/\/djungxnpq2nug.cloudfront.net\/image\/cache\/e\/a\/ea1a752635f9cb273e082b13c8ff3b99"}

However, that doesn't stop users running your program outside of CB. For that you need to fix the current working directory. You can do this pretty easily with Allegro 5.

ALLEGRO_PATH* p = al_get_standard_path(ALLEGRO_EXENAME_PATH);
al_change_directory(al_path_cstr(p) , ALLEGRO_NATIVE_PATH_SEP);
al_destroy_path(p);
p = 0;

Thread #617368. Printed from Allegro.cc