header.inc.php

<?php
// Dependencies
require_once('utils/const.php');
require_once('utils/common.php');

require_once('class/event.php');
require_once('class/scene.php');
require_once('class/sprite.php');
require_once('class/transition.php');
require_once('class/view.php');

if(!file_exists(OUTPUT_DIR)) {
    mkdir(OUTPUT_DIR, 0777, true);
}
if(!file_exists(SCENE_DIR)) {
    mkdir(SCENE_DIR, 0777, true);
}

session_start();
?>