From d13297e4f46e33b98ed3af28d3ea4b309a1deb3c Mon Sep 17 00:00:00 2001
From: Ondrej Novak <ondra-novak@email.cz>
Date: Sat, 8 Feb 2025 20:08:01 +0100
Subject: [PATCH] windows release build, fix book crash, fix lock, fix finale

---
 game/advconfig.c               |  1 +
 game/automap.c                 |  2 +-
 game/enemy.c                   |  2 +-
 game/globmap.c                 | 10 ++--
 game/interfac.c                |  4 +-
 game/inv.c                     | 19 ++++---
 game/kniha.c                   | 10 ++--
 game/macros.c                  |  8 +--
 game/skeldal.c                 | 11 ++--
 game/souboje.c                 |  4 +-
 game/temp_storage.cpp          | 10 ++--
 game/wizard.c                  |  2 +-
 libs/cspells.c                 |  2 +-
 libs/csv.hpp                   |  2 +-
 libs/inicfg.c                  |  5 +-
 libs/memman.c                  |  2 +-
 libs/mgifmem.c                 |  2 +-
 libs/music.cpp                 | 10 ++--
 libs/string_table.cpp          |  2 +-
 platform/legacy_coroutines.cpp |  2 +-
 platform/platform.h            |  1 +
 platform/sdl/sdl_context.cpp   |  9 ++--
 platform/sdl/sdl_context.h     |  5 +-
 platform/sdl/unique_value.h    | 96 ++++++++++++++++++++++++++++++++++
 24 files changed, 158 insertions(+), 63 deletions(-)
 create mode 100644 platform/sdl/unique_value.h

diff --git a/game/advconfig.c b/game/advconfig.c
index 26e56a5..62968cb 100644
--- a/game/advconfig.c
+++ b/game/advconfig.c
@@ -3,6 +3,7 @@
 
 
 #include <stdlib.h>
+#include <malloc.h>
 #include <string.h>
 
 
diff --git a/game/automap.c b/game/automap.c
index 1789eb0..93c4045 100644
--- a/game/automap.c
+++ b/game/automap.c
@@ -764,7 +764,7 @@ void draw_medium_map(void)
   {
   int xr, yr;
   int xp, yp;
-  int xc,yc,x,y;
+  int xc=0,yc=0,x=0,y=0;
   int j,i,k,layer;
   //char c=" ";
 
diff --git a/game/enemy.c b/game/enemy.c
index 0f639cb..8f45905 100644
--- a/game/enemy.c
+++ b/game/enemy.c
@@ -1363,7 +1363,7 @@ extern char att_player;
 void mob_hit(TMOB *mm,int dostal)
   {
   int ch;
-	int mob_dostal,mob_dostal_pocet;
+	int mob_dostal=0,mob_dostal_pocet=0;
 
   if (mm->vlajky & MOB_PASSABLE) return;
   if (dostal>mm->vlastnosti[VLS_MAXHIT]) dostal=mm->vlastnosti[VLS_MAXHIT];
diff --git a/game/globmap.c b/game/globmap.c
index 7d4f991..c4627ce 100644
--- a/game/globmap.c
+++ b/game/globmap.c
@@ -592,7 +592,7 @@ void global_map_point(EVENT_MSG *msg,void **_)
      }
   }
 
-void unwire_global_map()
+void unwire_global_map(void)
   {
   purge_index_tab();
   send_message(E_DONE,E_MOUSE,global_map_point);
@@ -601,7 +601,7 @@ void unwire_global_map()
   }
 
 
-void wire_global_map()
+void wire_global_map(void)
   {
   unwire_proc();
   schovej_mysku();
@@ -614,14 +614,14 @@ void wire_global_map()
   change_click_map(NULL,0);
   }
 
-static void *old_wire_save;
+static void (*old_wire_save)(void);
 static int old_viewsector;
-static void empty_unwire()
+static void empty_unwire(void)
   {
 
   }
 
-static void unwire_automap_file()
+static void unwire_automap_file(void)
   {
   load_map_automap(level_fname);
   wire_proc=old_wire_save;
diff --git a/game/interfac.c b/game/interfac.c
index 5995724..8cdaf32 100644
--- a/game/interfac.c
+++ b/game/interfac.c
@@ -1207,7 +1207,7 @@ static void play_wav(int wav,int sector)
 static void play_random_sound(int sector,int dir,int pos)
   {
   int seed;
-  int v;
+  int v=0;
 
   seed=rand();
   srand(sector+dir);
@@ -1264,7 +1264,7 @@ void fletna_glob_add_note(uint8_t note)
   if (strlen(globFletnaStr)<250) strcat(globFletnaStr,globNotes[note]);
 }
 
-static char compareMelody(const char *m1,const char *m2)
+static int compareMelody(const char *m1,const char *m2)
 {
   while (*m1 && *m2)
   {
diff --git a/game/inv.c b/game/inv.c
index ed19d1d..4a78d2c 100644
--- a/game/inv.c
+++ b/game/inv.c
@@ -803,7 +803,7 @@ char uloz_sip(int id,int xa,int ya,int xr,int yr);
 
 char info_box_drawed=0;
 void *info_box_below=NULL;
-void *inv_keyboard(EVENT_MSG *msg,void **usr);
+void inv_keyboard(EVENT_MSG *msg,void **usr);
 
 T_CLK_MAP clk_inv_view[]=
   {
@@ -1742,7 +1742,7 @@ void inv_item_info_box(EVENT_MSG *msg,void **data)
      }
   }
 
-void unwire_inv_mode()
+void unwire_inv_mode(void)
   {
   send_message(E_DONE,E_KEYBOARD,inv_keyboard);
   send_message(E_DONE,E_MOUSE,inv_item_info_box);
@@ -2189,7 +2189,7 @@ char human_click(int id,int xa,int ya,int xr,int yr)
   }
 
 
-void *inv_keyboard(EVENT_MSG *msg,void **usr)
+void inv_keyboard(EVENT_MSG *msg,void **usr)
   {
   char c;
 
@@ -2215,7 +2215,6 @@ void *inv_keyboard(EVENT_MSG *msg,void **usr)
               break;
         }
      }
-  return &inv_keyboard;
   }
 
 
@@ -2241,9 +2240,9 @@ static int fly_count; //vyuziti mapy
 void draw_fly_items(int celx,int cely,int sector,int side)
   {
   LETICI_VEC *p;
-  int xpos,ypos;
+  int xpos=0,ypos=0;
   const short *pic;
-  short picnum;char turn,smr;
+  short picnum;char turn=0,smr=0;
   TITEM *it;
   int i;
 
@@ -2385,8 +2384,8 @@ char shop_keeper_click(int id, int xa, int ya,int xr,int yr);
 char shop_block_click(int id, int xa, int ya,int xr,int yr);
 char shop_change_player(int id, int xa, int ya,int xr,int yr);
 char _exit_shop(int id, int xa, int ya,int xr,int yr);
-void unwire_shop();
-void wire_shop();
+void unwire_shop(void);
+void wire_shop(void);
 
 
 
@@ -2960,7 +2959,7 @@ static void shop_keyboard_proc(EVENT_MSG *msg, void **_) {
 
 static int old_inv_view_mode;
 
-void unwire_shop()
+void unwire_shop(void)
   {
   send_message(E_DONE,E_MOUSE,shop_mouse_event);
   send_message(E_DONE,E_KEYBOARD, shop_keyboard_proc);
@@ -2969,7 +2968,7 @@ void unwire_shop()
   inv_view_mode=old_inv_view_mode;
   }
 
-void wire_shop()
+void wire_shop(void)
   {
   int32_t size;
   static TSHOP *last_shop=NULL;
diff --git a/game/kniha.c b/game/kniha.c
index 9681a3e..d23f169 100644
--- a/game/kniha.c
+++ b/game/kniha.c
@@ -283,12 +283,12 @@ static char read_set(TMPFILE_RD *txt,char *var,char *set)
   do
      c=temp_storage_getc(txt);
   while (c<33);
-  if (c=='"') temp_storage_scanf(txt,"%[^\"]%c%c",set,&d,&d);
-  else if (c=='\'') temp_storage_scanf(txt,"%[^']%c%c",set,&d,&d);
+  if (c=='"') temp_storage_scanf(txt,"%[^\"]%c%c",set,&d,&c);
+  else if (c=='\'') temp_storage_scanf(txt,"%[^']%c%c",set,&d,&c);
   else
      {
       temp_storage_ungetc(txt);
-      temp_storage_scanf(txt,"%[^> ]%c",set,&d);
+      temp_storage_scanf(txt,"%[^> ]%c",set,&c);
      }
   while(c<33 && c!=EOF) c=temp_storage_getc(txt);
   if (c!='>') temp_storage_ungetc(txt);
@@ -308,7 +308,7 @@ static char read_set(TMPFILE_RD *txt,char *var,char *set)
   return c;
   }
 
-static int get_data_handle(char *filename,void *dec)
+static int get_data_handle(char *filename,ABLOCK_DECODEPROC  dec)
   {
   int i;
 
@@ -492,7 +492,7 @@ static void read_text(TMPFILE_RD *txt)
 
 static void seek_section(TMPFILE_RD *txt,int sect_number)
   {
-  int c=0,i;
+  int c=0,i=0;
 
   winconv=0;
   do
diff --git a/game/macros.c b/game/macros.c
index 80be6c2..ca36573 100644
--- a/game/macros.c
+++ b/game/macros.c
@@ -739,7 +739,7 @@ void call_macro_ex(int side, int flags, int runatside) {
         z = mrec.action_list;
         if (z->general.flags & flags) {
             int jmp_to = -1;
-            char force_cancel = 0;
+            char cancel_enabled = 1;
             int stindex = z - first_macro;
             if (!z->general.once || !macro_state_block.states[stindex]) {
                 macro_state_block.states[stindex] = 1;
@@ -789,14 +789,14 @@ void call_macro_ex(int side, int flags, int runatside) {
                         enter_shop(z->text.textindex);
                         break;
                     case MA_CLOCK:
-                        force_cancel = decode_lock(z->clock.znak, z->clock.string,
+                        cancel_enabled = decode_lock(z->clock.znak, z->clock.string,
                                 z->clock.codenum);
                         break;
                     case MA_CACTN:
                         cancel_action(z->cactn.sector, z->cactn.dir);
                         break;
                     case MA_LOCK:
-                        force_cancel = if_lock(side, z->lock.key_id,
+                        cancel_enabled = if_lock(side, z->lock.key_id,
                                 z->lock.thieflevel, &z->lock);
                         break;
                     case MA_SWAPS:
@@ -879,7 +879,7 @@ void call_macro_ex(int side, int flags, int runatside) {
             if (jmp_to != -1) {
                 mrec = go_macro(runatside, jmp_to);
                 program_counter = jmp_to;
-            } else if (z->general.cancel || force_cancel) {
+            } else if (z->general.cancel && cancel_enabled) {
                 break;
             } else {
                 program_counter++;
diff --git a/game/skeldal.c b/game/skeldal.c
index 3f078b8..aed920d 100644
--- a/game/skeldal.c
+++ b/game/skeldal.c
@@ -672,7 +672,7 @@ static void kill_timer(void)
   timer_tree.next=NULL;
   }
 
-void *user_timer(EVENT_MSG *msg,void **usr)
+void user_timer(EVENT_MSG *msg,void **usr)
   {
   int x;
   static int lastvalue=0;
@@ -685,7 +685,6 @@ void *user_timer(EVENT_MSG *msg,void **usr)
      lastvalue+=x;
      if (x) send_message(E_TIMER,x);
      }
-  return &user_timer;
   }
 
 void do_timer(void)
@@ -1305,7 +1304,7 @@ static void game_big_circle(char enforced)
   char s[13];
 
   purge_playlist();
-  s[12]=0;strcopy_n(s,loadlevel.name,12);
+  strcopy_n(s,loadlevel.name,sizeof(s));
   err=load_map(s);
   if (!enforced)
      {
@@ -1363,7 +1362,7 @@ static void game_big_circle(char enforced)
     enter_game();
 
     leave_current_map();
-    s[12]=0;strcopy_n(s,loadlevel.name,12);
+    strcopy_n(s,loadlevel.name,sizeof(s));
     if (s[0]!=0)err=load_map(s);
     memset(GlobEventList,0,sizeof(GlobEventList));
 
@@ -1384,9 +1383,9 @@ static void new_game(int argc, char *argv[])
   load_shops();
   open_story_file();
   if (argc<2)
-     strcopy_n(loadlevel.name,default_map,12);
+     strcopy_n(loadlevel.name,default_map,sizeof(loadlevel.name));
   else
-     strcopy_n(loadlevel.name,argv[1],12);
+     strcopy_n(loadlevel.name,argv[1],sizeof(loadlevel.name));
   if (argc>2)
      {
      sscanf(argv[2],"%d",&sect);
diff --git a/game/souboje.c b/game/souboje.c
index 866df90..ba06183 100644
--- a/game/souboje.c
+++ b/game/souboje.c
@@ -733,7 +733,7 @@ void wire_end_game()
           if (mname != NULL) {
               cur_group = postavy[i].groupnum;
               TMA_LOADLEV lv;
-              strcopy_n(lv.name,mname, sizeof(lv.name)-1);
+              strcopy_n(lv.name,mname, sizeof(lv.name));
               lv.start_pos = -postavy[i].sektor;
               lv.dir = postavy[i].direction;
               macro_load_another_map(&lv);
@@ -1968,7 +1968,7 @@ void fix_group_direction()
      if (postavy[i].used && postavy[i].groupnum==g && !postavy[i].programovano) postavy[i].direction=viewdir;
   }
 
-void souboje_turn(char smer)
+void souboje_turn(int smer)
   {
     if (pass_zavora) return;
   norefresh=1;
diff --git a/game/temp_storage.cpp b/game/temp_storage.cpp
index 34bf203..853b69e 100644
--- a/game/temp_storage.cpp
+++ b/game/temp_storage.cpp
@@ -49,15 +49,15 @@ void temp_storage_store(const char *name, const void *data, int32_t size) {
 int32_t temp_storage_find(const char *name) {
     auto iter = temp_fsystem.find(std::string_view(name));
     if (iter == temp_fsystem.end()) return -1;
-    return iter->second.size();
+    return static_cast<int32_t>(iter->second.size());
 }
 
 int32_t temp_storage_retrieve(const char *name, void *data, int32_t size) {
     auto iter = temp_fsystem.find(std::string_view(name));
     if (iter == temp_fsystem.end()) return -1;
-    size = std::min<int32_t>(size, iter->second.size());
+    size = std::min<int32_t>(size, static_cast<int32_t>(iter->second.size()));
     std::copy(iter->second.begin(), iter->second.end(), reinterpret_cast<uint8_t *>(data));
-    return iter->second.size();
+    return static_cast<int32_t>(iter->second.size());
 
 }
 
@@ -109,7 +109,7 @@ uint32_t temp_storage_read(void *data, uint32_t size, TMPFILE_RD *f) {
     d = d.substr(p.size());
     auto b = reinterpret_cast<uint8_t *>(data);
     std::copy(p.begin(), p.end(), b);
-    return p.size();
+    return static_cast<uint32_t>(p.size());
 }
 
 void temp_storage_skip(TMPFILE_RD *f, int bytes) {
@@ -136,7 +136,7 @@ char *temp_storage_gets(char *buff, size_t sz, TMPFILE_RD *f) {
     if (pos > d.size()) pos = d.size(); else ++pos;
     if (pos == 0) return NULL;
     if (pos > sz - 1) pos = sz - 1;
-    temp_storage_read(buff, pos, f);
+    temp_storage_read(buff, static_cast<int32_t>(pos), f);
     buff[pos] = 0;
     return buff;
 }
diff --git a/game/wizard.c b/game/wizard.c
index fb0be8d..ac60506 100644
--- a/game/wizard.c
+++ b/game/wizard.c
@@ -359,7 +359,7 @@ static reload_mobs()
   {
   extern char reset_mobiles;
   reset_mobiles=1;
-  strcopy_n(loadlevel.name,level_fname,12);
+  strcopy_n(loadlevel.name,level_fname,sizeof(loadlevel.name));
   loadlevel.start_pos=viewsector;
   loadlevel.name[12]=0;
   loadlevel.dir=viewdir;
diff --git a/libs/cspells.c b/libs/cspells.c
index eb478c8..cfc9bde 100644
--- a/libs/cspells.c
+++ b/libs/cspells.c
@@ -78,7 +78,7 @@ int build_tables()
            case 128:while (fgetc(source)!='\n');
                     fgetc(source);
                     i=fscanf(source,"%[^\n]",global_name);
-                    strcopy_n(kouzla_tab[cur_spell].spellname,global_name,29);
+                    strcopy_n(kouzla_tab[cur_spell].spellname,global_name,sizeof(kouzla_tab[cur_spell].spellname));
                     printf("(%3d, 0x%05X) %s\n",cur_spell, kouzla_tab[cur_spell].start,global_name);
                     break;
            case 129:add_prog_command(0xff);
diff --git a/libs/csv.hpp b/libs/csv.hpp
index 23073ec..751c6f8 100644
--- a/libs/csv.hpp
+++ b/libs/csv.hpp
@@ -352,7 +352,7 @@ inline bool CSVReader<Source>::readRow(const CSVFieldIndexMapping<T> &mapping,T
                     } else {
                         static_assert(std::is_same_v<TVal, bool>);
                         CSVState st = read(buff);
-                        std::transform(buff.begin(), buff.end(), buff.begin(), [](char c) -> char { return std::tolower(c); });
+                        std::transform(buff.begin(), buff.end(), buff.begin(), [](char c) -> char { return static_cast<char>(std::tolower(c)); });
                         if (buff == "y" || buff == "t" || buff =="true" || buff == "yes" || buff == "on") {
                             target.*ptr = true;
                         } else if (buff == "n" || buff == "f" || buff =="false" || buff == "no" || buff == "off") {
diff --git a/libs/inicfg.c b/libs/inicfg.c
index 21340c7..e1eaa85 100644
--- a/libs/inicfg.c
+++ b/libs/inicfg.c
@@ -39,11 +39,10 @@ TSTR_LIST merge_configs(TSTR_LIST target, TSTR_LIST source)
   char buff[256];
   int i;
   char *c;
-
-  buff[255]=0;
+  
   for (i=0;i<str_count(source);i++) if (source[i])
   {
-	strcopy_n(buff,source[i],255);
+	strcopy_n(buff,source[i],sizeof(buff));
 	c=strchr(buff,' ');
 	if (c!=NULL)
 	{
diff --git a/libs/memman.c b/libs/memman.c
index 152bf76..4edb283 100644
--- a/libs/memman.c
+++ b/libs/memman.c
@@ -666,7 +666,7 @@ void display_status()
            int k;
 
            for(k=0;k<5;k++) copys[k]=h->flags & (1<<k)?flags[k]:'.';
-           if (h->src_file[0]) strcopy_n(nname,h->src_file,12);else strcpy(nname,"<local>");
+           if (h->src_file[0]) strcopy_n(nname,h->src_file,sizeof(nname));else strcpy(nname,"<local>");
            printf("%04Xh ... %12s %s %s %08lXh %6d %10d %6d \n",i*BK_MINOR_HANDLES+j,
            nname,names[h->status-1],
            copys,(unsigned long)(uintptr_t)h->blockdata,h->size,h->counter,h->lockcount);
diff --git a/libs/mgifmem.c b/libs/mgifmem.c
index 096faac..276fc36 100644
--- a/libs/mgifmem.c
+++ b/libs/mgifmem.c
@@ -363,7 +363,7 @@ char mgif_play(const void *mgif) //dekoduje a zobrazi frame
   const char *pc;
   char *ff;
 //  int acts,size,act,csize;
-  const void *scr_sav;
+  const void *scr_sav = 0;
   int scr_act=-1;
 
 
diff --git a/libs/music.cpp b/libs/music.cpp
index 724aa2e..24fd08b 100644
--- a/libs/music.cpp
+++ b/libs/music.cpp
@@ -17,10 +17,10 @@ class MUSStreamParser: public IMusicStream {
 public:
 
     MUSStreamParser(const char *name) {
-        data = map_file_to_memory(file_icase_find(name), &sz);
-        if (data) {
+        _data = map_file_to_memory(file_icase_find(name), &sz);
+        if (_data) {
             _loaded = true;
-            iter = reinterpret_cast<const uint8_t *>(data);
+            iter = reinterpret_cast<const uint8_t *>(_data);
             chans = read_short();
             freq = read_int();
             iter += 4;
@@ -32,7 +32,7 @@ public:
     }
 
     ~MUSStreamParser() {
-        if (data) unmap_file(data, sz);
+        if (_data) unmap_file(_data, sz);
     }
     MUSStreamParser(const MUSStreamParser &) = delete;
     MUSStreamParser& operator=(const MUSStreamParser &) = delete;
@@ -60,7 +60,7 @@ public:
 
 protected:
     bool _loaded = false;
-    void *data;
+    void *_data;
     std::size_t sz;
 
     std::int16_t chans;
diff --git a/libs/string_table.cpp b/libs/string_table.cpp
index 0197a81..df6266a 100644
--- a/libs/string_table.cpp
+++ b/libs/string_table.cpp
@@ -30,7 +30,7 @@ TSTRINGTABLE *stringtable_load(const char *filename) {
     CSVRecord rec;
     std::unique_ptr<TSTRINGTABLE> tbl = std::make_unique<TSTRINGTABLE>();
     while (reader.readRow(mapping, rec)) {
-        windows2kamenik(rec.string.data(), rec.string.size(), rec.string.data());
+        windows2kamenik(rec.string.data(), (int)rec.string.size(), rec.string.data());
         tbl->_strings[rec.index] = rec.string;
     }
     return tbl.release();
diff --git a/platform/legacy_coroutines.cpp b/platform/legacy_coroutines.cpp
index db39c6f..0bc0616 100644
--- a/platform/legacy_coroutines.cpp
+++ b/platform/legacy_coroutines.cpp
@@ -173,7 +173,7 @@ EVENT_MSG *task_wait_event(int32_t event_number) {
     return cur_message;
 }
 int q_any_task() {
-    return task_list.size();
+    return (int)task_list.size();
 }
 char task_quitmsg() {
     if (current_task_inst == NULL) return 0;
diff --git a/platform/platform.h b/platform/platform.h
index bd82317..fb2abe3 100644
--- a/platform/platform.h
+++ b/platform/platform.h
@@ -16,6 +16,7 @@
 #pragma warning(disable: 4456)
 #pragma warning(disable: 4457)
 #pragma warning(disable: 4702)
+#pragma warning(disable: 4100)
 #define CASE_FALLTHROUGH
 #else
 #define CASE_FALLTHROUGH [[fallthrough]]
diff --git a/platform/sdl/sdl_context.cpp b/platform/sdl/sdl_context.cpp
index 1c1898c..2cd9e37 100644
--- a/platform/sdl/sdl_context.cpp
+++ b/platform/sdl/sdl_context.cpp
@@ -26,9 +26,8 @@ void SDLContext::SDL_Deleter::operator ()(SDL_Texture* texture) {
     SDL_DestroyTexture(texture);
 }
 
-void SDLContext::SDL_Audio_Deleter::operator()(void *x) {
-    SDL_AudioDeviceID id = reinterpret_cast<std::uintptr_t>(x);
-    SDL_CloseAudioDevice(id);
+void SDLContext::SDL_Audio_Deleter::operator()(SDL_AudioDeviceID x) {
+    SDL_CloseAudioDevice(x);
 }
 
 struct SDL_INIT_Context {
@@ -602,12 +601,12 @@ SDLContext::AudioInfo SDLContext::init_audio(const AudioConfig &config, SDL_Audi
         }
         throw std::runtime_error(err.str());
     }
-    _audio.reset(reinterpret_cast<void *>(id));
+    _audio.reset(id);
 
     return {obtaied.freq};
 }
 void SDLContext::pause_audio(bool pause) {
-    SDL_AudioDeviceID id = reinterpret_cast<std::intptr_t>(_audio.get());
+    SDL_AudioDeviceID id = _audio.get();
     SDL_PauseAudioDevice(id, pause?1:0);
 }
 
diff --git a/platform/sdl/sdl_context.h b/platform/sdl/sdl_context.h
index 5b131ab..f3e64e7 100644
--- a/platform/sdl/sdl_context.h
+++ b/platform/sdl/sdl_context.h
@@ -8,6 +8,7 @@
 #include <vector>
 #include <libs/mouse.h>
 #include <functional>
+#include "unique_value.h"
 
 #include <queue>
 
@@ -124,7 +125,7 @@ protected:
     };
 
     struct SDL_Audio_Deleter {
-        void operator()(void *x);
+        void operator()(SDL_AudioDeviceID x);
     };
 
 
@@ -142,7 +143,7 @@ protected:
     std::unique_ptr<SDL_Texture, SDL_Deleter> _texture;
     std::unique_ptr<SDL_Texture, SDL_Deleter> _texture2;
     std::unique_ptr<SDL_Texture, SDL_Deleter> _crt_effect;
-    std::unique_ptr<void, SDL_Audio_Deleter> _audio;
+    unique_value<SDL_AudioDeviceID, SDL_Audio_Deleter> _audio;
     SDL_Texture *_visible_texture;
     SDL_Texture *_hidden_texture;
 
diff --git a/platform/sdl/unique_value.h b/platform/sdl/unique_value.h
new file mode 100644
index 0000000..54ebe96
--- /dev/null
+++ b/platform/sdl/unique_value.h
@@ -0,0 +1,96 @@
+#include <optional>
+#include <utility>
+#include <type_traits>
+
+
+template<typename T, typename Deleter>
+class unique_value {
+public:
+    using value_type = T;
+    using deleter_type = Deleter;
+
+private:
+    std::optional<T> value;
+    deleter_type deleter;  
+
+public:
+    unique_value() noexcept(std::is_nothrow_default_constructible_v<Deleter>)
+        : value(std::nullopt), deleter{} { }
+
+    explicit unique_value(T v, Deleter d = Deleter{}) noexcept
+        : value(std::move(v)), deleter(std::move(d)) { }
+
+    // Zakázání kopírování
+    unique_value(const unique_value&) = delete;
+    unique_value& operator=(const unique_value&) = delete;
+
+    unique_value(unique_value&& other) noexcept
+        : value(std::move(other.value)), deleter(std::move(other.deleter))
+    {
+        other.value.reset();
+    }
+
+    unique_value& operator=(unique_value&& other) noexcept {
+        if (this != &other) {
+            reset(); // Uvolní aktuální hodnotu (volá deleter)
+            value = std::move(other.value);
+            deleter = std::move(other.deleter);
+            other.value.reset();
+        }
+        return *this;
+    }
+
+    ~unique_value() {
+        reset();
+    }
+
+    T* operator->() {
+        return &(*value);
+    }
+    const T* operator->() const {
+        return &(*value);
+    }
+
+    T& operator*() {
+        return *value;
+    }
+    const T& operator*() const {
+        return *value;
+    }
+
+    T& get() {
+        return *value;
+    }
+    const T& get() const {
+        return *value;
+    }
+
+    bool has_value() const noexcept {
+        return value.has_value();
+    }
+
+    explicit operator bool() const noexcept {
+        return value.has_value();
+    }
+
+    std::optional<T> release() noexcept {
+        auto temp = std::move(value);
+        value.reset();
+        return temp;
+    }
+
+    void reset() noexcept {
+        if (value.has_value()) {
+            deleter(*value);
+            value.reset();
+        }
+    }
+    void reset(T &&v) noexcept {
+        reset();
+        value = std::move(v);
+    }
+    void reset(const T &v) noexcept {
+        reset();
+        value = v;
+    }
+};