mp3 support for playing background music

platform/windows/app_start.cpp

@@ -11,7 +11,7 @@
 #include <shellapi.h>
 
 void show_help(std::ostream &out, const char *arg0) {
-    out << 
+    out <<
             "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"
@@ -21,9 +21,10 @@ void show_help(std::ostream &out, const char *arg0) {
     out << arg0 << " [-f <file>] [-a <file>] [-l <lang>] [-s <dir>] [-h]\n\n";
     out << "-f <file>       path to configuration file\n"
            "-a <adv>        path for adventure file (.adv)\n"
+           "-p <file>       patch data with custom DDL\n"
            "-l <lang>       set language (cz|en)\n"
            "-s <directory>  generate string-tables (for localization) and exit\n"
-           "-h              this help\n";    
+           "-h              this help\n";
 }
 
 void show_help_short(std::ostream &out) {
@@ -31,20 +32,22 @@ void show_help_short(std::ostream &out) {
 }
 
 
-int main(int argc, char **argv) {    
+int main(int argc, char **argv) {
     std::string config_name = SKELDALINI;
     std::string adv_config_file;
     std::string gen_stringtable_path;
     std::string lang;
+    std::string patch;
     std::ostringstream console;
-    for (int optchr = -1; (optchr = getopt(argc, argv, "hf:a:s:l:")) != -1; ) {
+    for (int optchr = -1; (optchr = getopt(argc, argv, "hf:a:s:l:p:")) != -1; ) {
         switch (optchr) {
             case 'f': config_name = optarg;break;
             case 'a': adv_config_file = optarg;break;
             case 'h': show_help(console, argv[0]);break;
+            case 'p': patch = optarg; break;
             case 'l': lang = optarg;break;
             case 's': gen_stringtable_path = optarg;break;
-            default:  show_help_short(console);break;                    
+            default:  show_help_short(console);break;
         }
     }
 
@@ -64,6 +67,7 @@ int main(int argc, char **argv) {
     cfg.adventure_path = adv_config_file.empty()?NULL:adv_config_file.c_str();
     cfg.config_path = config_name.c_str();
     cfg.lang_path = lang.empty()?NULL:lang.c_str();
+    cfg.patch_file = patch.empty()?NULL:patch.c_str();
 
     {
         std::string msg = console.str();

platform/windows/map_file.cpp

@@ -12,7 +12,7 @@ extern "C" {
 #include <stdexcept>
 
 // Funkce pro mapování souboru do paměti
-void* map_file_to_memory_cpp(const char *name, size_t *sz) {
+const void* map_file_to_memory_cpp(const char *name, size_t *sz) {
     if (!name || !sz) {
         return NULL;
     }
@@ -26,7 +26,7 @@ void* map_file_to_memory_cpp(const char *name, size_t *sz) {
         throw std::runtime_error(std::string("failed to get size of file:").append(name));
     }
 
-    
+
 
     HANDLE hMapping = CreateFileMapping(h,NULL,PAGE_READONLY,0,0,NULL);
     if (hMapping == NULL || hMapping == INVALID_HANDLE_VALUE) {
@@ -40,16 +40,16 @@ void* map_file_to_memory_cpp(const char *name, size_t *sz) {
     if (mappedData == NULL) {
         throw std::runtime_error(std::string("Failed to map file:").append(name));
     }
-    
+
     *sz = fsize.LowPart;
     return mappedData;
 }
 
-void* map_file_to_memory(const char *name, size_t *sz) {
+const void* map_file_to_memory(const char *name, size_t *sz) {
     return map_file_to_memory_cpp(name, sz);
 }
 
 // Funkce pro zrušení mapování
-void unmap_file(void *ptr, size_t) {
-    UnmapViewOfFile(ptr);
+void unmap_file(const void *ptr, size_t) {
+    UnmapViewOfFile((void *)ptr);
 }

platform/windows/map_file.h

@@ -1,4 +1,4 @@
 #include <stddef.h>
 #include <stdint.h>
-void *map_file_to_memory(const char *name, size_t *sz);
-void unmap_file(void *ptr, size_t sz);
+const void *map_file_to_memory(const char *name, size_t *sz);
+void unmap_file(const void *ptr, size_t sz);