src/main.c


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#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <crt0.h>

#include "timer.h"
#include "keyb.h"
#include "sound.h"
#include "vga.h"
#include "data.h"
#include "menu.h"
#include "game.h"

/* disable paging because our int handlers are written in C */
int _crt0_startup_flags = _CRT0_FLAG_LOCK_MEMORY;

void free_all()
{
    timer_free();
    keyb_free();
    sound_free();
}

int main(int argc, char *argv[])
{
    if (!sound_init())
    {
        fprintf(stderr, "ERROR: failed to init sound\n");
        return 1;
    }

    timer_init();
    keyb_init();
    atexit(free_all);

    /* to update mikmod */
    timer_user_fn(sound_update);

    /* set VGA 320x200, 256 col */
    if (!set_mode(0x13))
    {
        fprintf(stderr, "ERROR: failed to init the VGA card\n");
        return 1;
    }

    set_palette(binary_palette_start);

    if (!open_framebuffer())
    {
        set_mode(3);
        fprintf(stderr, "ERROR: failed to open the framebuffer\n");
        return 1;
    }

    while (run_menu())
        run_game();

    set_mode(3);
    close_framebuffer();

    return 0;
}