Add "al_is_font_addon_initialized"

Author: MarkOates

addons/font/allegro5/allegro_font.h

@@ -102,6 +102,7 @@ ALLEGRO_FONT_FUNC(void, al_get_text_dimensions, (const ALLEGRO_FONT *f,
    char const *text,
    int *bbx, int *bby, int *bbw, int *bbh));
 ALLEGRO_FONT_FUNC(bool, al_init_font_addon, (void));
+ALLEGRO_FONT_FUNC(bool, al_is_font_addon_initialized, (void));
 ALLEGRO_FONT_FUNC(void, al_shutdown_font_addon, (void));
 ALLEGRO_FONT_FUNC(uint32_t, al_get_allegro_font_version, (void));
 ALLEGRO_FONT_FUNC(int, al_get_font_ranges, (ALLEGRO_FONT *font,

addons/font/font.c

@@ -387,6 +387,16 @@ bool al_init_font_addon(void)
 }
 
 
+
+/* Function: al_is_font_addon_initialized
+ */
+bool al_is_font_addon_initialized(void)
+{
+   return font_inited;
+}
+
+
+
 /* Function: al_shutdown_font_addon
  */
 void al_shutdown_font_addon(void)

docs/src/refman/font.txt

@@ -71,6 +71,12 @@ checking the return value if your code needs to be compatible with Allegro
 
 See also: [al_init_image_addon], [al_init_ttf_addon], [al_shutdown_font_addon]
 
+### API: al_is_font_addon_initialized
+
+Returns true if the font addon has been initialized, otherwise returns false.
+
+See also: [al_init_image_addon], [al_shutdown_font_addon]
+
 ### API: al_shutdown_font_addon
 
 Shut down the font addon. This is done automatically at program exit,