a lot of changes and support languages

platform/linux/app_start.cpp

@@ -0,0 +1,73 @@
+#include "../../game/skeldal.h"
+#include "../getopt.h"
+#include "../platform.h"
+#include <iostream>
+#include <string>
+
+void show_help(const char *arg0) {
+    printf(
+            "Brany Skeldalu (Gates of Skeldal) portable game player\n"
+            "Copyright (c) 2025 Ondrej Novak. All rights reserved.\n\n"
+            "This work is licensed under the terms of the MIT license.\n"
+            "For a copy, see <https://opensource.org/licenses/MIT>.\n"
+            "\n"
+            "Usage:"
+    );
+    printf("%s [-f <file>] [-a <file>] [-l <lang>] [-s <dir>] [-h]\n\n", arg0);
+
+    printf("-f <file>       path to configuration file\n"
+           "-a <adv>        path for adventure file (.adv)\n"
+           "-l <lang>       set language (cz|en)"
+           "-s <directory>  generate string-tables (for localization) and exit\n"
+           "-h              this help\n");
+    exit(0);
+}
+
+void show_help_short() {
+    printf("Use -h for help\n");
+}
+
+
+int main(int argc, char **argv) {
+    std::string config_name = SKELDALINI;
+    std::string adv_config_file;
+    std::string gen_stringtable_path;
+    std::string lang;
+    for (int optchr = -1; (optchr = getopt(argc, argv, "hf:a:s:l:")) != -1; ) {
+        switch (optchr) {
+            case 'f': config_name = optarg;break;
+            case 'a': adv_config_file = optarg;break;
+            case 'h': show_help(argv[0]);break;
+            case 'l': lang = optarg;break;
+            case 's': gen_stringtable_path = optarg;break;
+            default: show_help_short();
+                     return 1;
+        }
+    }
+
+    SKELDAL_CONFIG cfg;
+    cfg.short_help = show_help_short;
+    cfg.show_error = [](const char *txt) {
+        std::cerr << "ERROR: " << txt << std::endl;
+    };
+    cfg.adventure_path = adv_config_file.empty()?NULL:adv_config_file.c_str();
+    cfg.config_path = config_name.c_str();
+    cfg.lang_path = lang.c_str();
+    try {
+
+        if (!gen_stringtable_path.empty()) {
+            skeldal_gen_string_table_entry_point(&cfg, gen_stringtable_path.c_str());
+            return 0;
+        } else {
+            return skeldal_entry_point(&cfg);
+        }
+
+    } catch (const std::exception &e) {
+        std::cerr << "ERROR: " << e.what() << std::endl;
+        return 1;
+    }
+
+    return 0;
+
+}
+