game/_incl_data/autoload.php

<?php

//error_reporting(E_ALL);
const GAME = true; // Для совместимости с этой "защитой".
const GAME_VERSION = 'alpha-7.4';
// Новая автозагрузка.
// ВНИМАНИЕ! Не введено в эксплуатацию!

require_once 'mysql_override.php';

spl_autoload_register(function (string $className) {
    $rootdir = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . '_incl_data' . DIRECTORY_SEPARATOR;
    $addsrc = function ($class) {
        $c = explode('\\', $class);
        array_splice($c, 1, 0, 'src');
        return implode(DIRECTORY_SEPARATOR, $c);
    };
    # 1 with namespaces
    # 2 without
    $fileName = [
        $rootdir . 'class' . DIRECTORY_SEPARATOR . str_replace('\\', DIRECTORY_SEPARATOR, $className . '.php'),
        $rootdir . 'class' . DIRECTORY_SEPARATOR . $className . '.php',
        $rootdir . 'function' . DIRECTORY_SEPARATOR . str_replace('\\', DIRECTORY_SEPARATOR, $className . '.php'),
        $rootdir . 'vendor' . DIRECTORY_SEPARATOR . $addsrc($className) . '.php',
    ];
    foreach ($fileName as $file) {
        if (file_exists($file)) {
            require_once $file;
            break;
        }
    }
});

spl_autoload_register(function (string $classname) {
    $rootdir = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR . '_incl_data';
    $classMap = [
        'NewCombats' => $rootdir . '/class/',
        'Insallah' => $rootdir . '/class/Insallah/',
        'DarksLight2' => $rootdir . '/class/DarksLight2/',
    ];
    $parts = explode('\\', $classname);
    $namespace = array_shift($parts);
    $classFile = array_pop($parts) . '.php';

    if (!array_key_exists($namespace, $classMap)) {
        return;
    }

    $path = implode(DIRECTORY_SEPARATOR, $parts);
    $file = $classMap[$namespace] . $path . DIRECTORY_SEPARATOR . $classFile;

    if (!file_exists($file) && !class_exists($classname)) {
        return;
    }

    require_once $file;
});