Alleg4System()
{
if (allegro_init() < 0)
throw base::Exception("Cannot initialize Allegro library: %s", allegro_error);
set_uformat(U_UTF8);
#if MAKE_VERSION(ALLEGRO_VERSION, ALLEGRO_SUB_VERSION, ALLEGRO_WIP_VERSION) >= MAKE_VERSION(4, 4, 0)
_al_detect_filename_encoding();
#endif
install_timer();
// Register PNG as a supported bitmap type
register_bitmap_file_type("png", load_png, save_png);
// Init event sources
clock_init();
display_events_init();
#ifdef USE_KEY_POLLER
key_poller_init();
#endif
#ifdef USE_MOUSE_POLLER
mouse_poller_init();
#endif
g_instance = this;
}
Alleg4System()
: m_font(font, Alleg4Font::None) // Default Allegro font
{
allegro_init();
set_uformat(U_UTF8);
_al_detect_filename_encoding();
install_timer();
// Register PNG as a supported bitmap type
register_bitmap_file_type("png", load_png, save_png);
}
/* _install_allegro:
* Initialises the Allegro library, activating the system driver.
*/
static int _install_allegro(int system_id, int *errno_ptr, int (*atexit_ptr)(void (*func)(void)))
{
RGB black_rgb = {0, 0, 0, 0};
char tmp1[64], tmp2[64];
int i;
#ifndef ALLEGRO_USE_CONSTRUCTOR
/* call constructor functions manually */
extern void _initialize_datafile_types();
extern void _midi_constructor();
extern void _mouse_constructor();
_initialize_datafile_types();
_midi_constructor();
_mouse_constructor();
_register_bitmap_file_type_init();
_register_sample_file_type_init();
_register_font_file_type_init();
#endif
if (errno_ptr)
allegro_errno = errno_ptr;
else
allegro_errno = &errno;
/* set up default palette structures */
for (i=0; i<256; i++)
black_palette[i] = black_rgb;
for (i=16; i<256; i++)
desktop_palette[i] = desktop_palette[i & 15];
/* lock some important variables */
LOCK_VARIABLE(screen);
LOCK_VARIABLE(gfx_driver);
LOCK_VARIABLE(gfx_capabilities);
LOCK_VARIABLE(_last_bank_1);
LOCK_VARIABLE(_last_bank_2);
LOCK_VARIABLE(_gfx_bank);
LOCK_VARIABLE(_drawing_mode);
LOCK_VARIABLE(_drawing_pattern);
LOCK_VARIABLE(_drawing_x_anchor);
LOCK_VARIABLE(_drawing_y_anchor);
LOCK_VARIABLE(_drawing_x_mask);
LOCK_VARIABLE(_drawing_y_mask);
LOCK_VARIABLE(_current_palette);
LOCK_VARIABLE(os_type);
/* nasty stuff to set up the config system before the system driver */
system_driver = _system_driver_list[0].driver;
/* needed in case set_config_file was called before allegro_init */
_reload_config();
reload_config_texts(NULL);
if (system_id == SYSTEM_AUTODETECT)
system_id = get_config_id(uconvert_ascii("system", tmp1), uconvert_ascii("system", tmp2), SYSTEM_AUTODETECT);
system_driver = NULL;
/* initialise the system driver */
usetc(allegro_error, 0);
for (i=0; _system_driver_list[i].driver; i++) {
if ((_system_driver_list[i].id == system_id) ||
((_system_driver_list[i].autodetect) && (system_id == SYSTEM_AUTODETECT))) {
system_driver = _system_driver_list[i].driver;
system_driver->name = system_driver->desc = get_config_text(system_driver->ascii_name);
if (system_driver->init() != 0) {
system_driver = NULL;
if (system_id != SYSTEM_AUTODETECT)
break;
}
else
break;
}
}
if (!system_driver)
return -1;
/* disable close button */
set_close_button_callback(NULL);
/* detect CPU type */
check_cpu();
#if defined(ALLEGRO_UNIX) || defined(ALLEGRO_WINDOWS)
/* detect filename encoding used by libc */
/* XXX This should be done for all platforms but I'm not set up to check
* that all platforms have been covered before making the 4.2.3 release.
* --pw
*/
_al_detect_filename_encoding();
#endif
/* set up screensaver policy */
_screensaver_policy = get_config_int(uconvert_ascii("system", tmp1),
uconvert_ascii("disable_screensaver", tmp2),
FULLSCREEN_DISABLED);
/* install shutdown handler */
if (_allegro_count == 0) {
if (atexit_ptr)
atexit_ptr(allegro_exit_stub);
}
_allegro_count++;
TRACE(PREFIX_I "Allegro initialised (instance %d)\n", _allegro_count);
return 0;
}