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assets.h

@@ -25,9 +25,9 @@ static const char *LCR_texts[] =
   "play repl",
 
   // main menu items:
-  "camera",
-  "music",
-  "sound",
+  "camera: $",
+  "music: $",
+  "sound: $",
   "save repl",
   "exit",
 

audio.h

@@ -17,6 +17,7 @@
 struct
 {
   uint32_t frame;
+  uint8_t on;
   uint8_t soundPlayed;
   uint16_t soundPlayedFrame;
   uint32_t noise;
@@ -38,19 +39,14 @@ void LCR_audioInit(void)
 {
   LCR_LOG0("initializing audio");
   LCR_audio.frame = 0;
+  LCR_audio.on = 1;
   LCR_audio.soundPlayed = LCR_SOUND_NONE;
   LCR_audio.soundPlayedFrame = 0;
   LCR_audio.noise = 0;
-
-LCR_audio.crashSample = 0;
-
-LCR_audio.engineOsc = 0;
-
-LCR_audio.engineInc = 1;
-
-LCR_audio.engineIntensity = 0;
-
-
+  LCR_audio.crashSample = 0;
+  LCR_audio.engineOsc = 0;
+  LCR_audio.engineInc = 1;
+  LCR_audio.engineIntensity = 0;
 }
 
 void LCR_audioSetEngineIntensity(uint8_t value)
@@ -75,6 +71,9 @@ uint8_t LCR_audioGetNextSample(void)
 {
   unsigned char result = 128;
 
+  if (!LCR_audio.on)
+    return result;
+
   switch (LCR_audio.soundPlayed)
   {
     case LCR_SOUND_CRASH_SMALL: 

frontend_sdl.c

@@ -26,11 +26,14 @@ void LCR_appendResourceStr(const char *str)
 
 void audioFillCallback(void *userdata, uint8_t *s, int l)
 {
-  if (musicFile)
+  if (musicFile && LCR_gameMusicOn())
   {
     if (!fread(s,1,l,musicFile))
       rewind(musicFile);
   }
+  else
+    for (int i = 0; i < l; ++i)
+      s[i] = 128;
 
   for (int i = 0; i < l; ++i)
     s[i] = s[i] / 2 + LCR_gameGetNextAudioSample() / 2;

game.h

@@ -61,7 +61,7 @@
   - Call the below described functions as described.
   - If you want to support music, make your frontend play music from the "music"
     file in assets. It is in raw format, storing 8bit unsigned samples at 8000
-    Hz. Use the LCR_gameGetMusicVolume to check what the music volume is. If you
+    Hz. Use the LCR_gameMusicOn to check what the music volume is. If you
     don't support music, set LCR_SETTING_MUSIC to 0 in your frontend code so
     that the game knows music is disabled.
 */
@@ -138,7 +138,7 @@ uint8_t LCR_gameStep(uint32_t timeMs);
 /**
   Gets the current music volume;
 */
-uint8_t LCR_gameGetMusicVolume(void);
+uint8_t LCR_gameMusicOn(void);
 
 /**
   Gets next audio sample (unsigned 8bit samples, 8 KHz).
@@ -147,6 +147,8 @@ uint8_t LCR_gameGetNextAudioSample(void);
 
 //------------------------------------------------------------------------------
 
+#include "settings.h"
+
 #define LCR_LOG0(s) ;
 #define LCR_LOG1(s) ;
 #define LCR_LOG2(s) ;
@@ -194,7 +196,7 @@ struct
   uint32_t nextRacingTickTime;
   uint8_t controlMode;
   uint8_t debugDraw;
-  uint8_t musicVolume;
+  uint8_t musicOn;
   uint8_t keyStates[LCR_KEYS_TOTAL]; /**< Assures unchanging key states
                                           during a single frame, hold number of
                                           frames for which the key has been
@@ -218,10 +220,10 @@ const char *menuItemNamePointers[LCR_MENU_MAX_ITEMS];
   } resourceFile;
 } LCR_game;
 
-uint8_t LCR_gameGetMusicVolume(void)
+uint8_t LCR_gameMusicOn(void)
 {
 #if LCR_SETTING_MUSIC
-  return LCR_game.musicVolume;
+  return LCR_game.musicOn;
 #else
   return 0;
 #endif
@@ -399,11 +401,11 @@ LCR_game.menuItemCount = 0;
 
 }
 
-void LCR_gameSetMenuItemStr(uint8_t item, const char *str)
+void LCR_gameSetMenuItemStr(uint8_t item, const char *str, char replaceChar)
 {
   for (int i = 0; i < LCR_MENU_STRING_SIZE - 1; ++i)
   {
-    LCR_game.menuItemNames[item][i] = str[i];
+    LCR_game.menuItemNames[item][i] = str[i] == '$' ? replaceChar : str[i];
     LCR_game.menuItemNames[item][i + 1] = 0;
   }
 }
@@ -411,7 +413,12 @@ void LCR_gameSetMenuItemStr(uint8_t item, const char *str)
 void LCR_gameLoadMainMenuItems(void)
 {
   for (int i = 0; i < 5; ++i)
-    LCR_gameSetMenuItemStr(i,LCR_texts[4 + i]);
+  {
+    char replaceChar = i == 0 ? 'X' :
+      (i == 1 ? '0' + LCR_game.musicOn : ('0' + LCR_audio.on));
+
+    LCR_gameSetMenuItemStr(i,LCR_texts[4 + i],replaceChar);
+  }
 
   LCR_game.menuItemCount = 4;
 }
@@ -433,17 +440,17 @@ void LCR_gameInit(void)
   for (int i = 0; i < LCR_MENU_MAX_ITEMS; ++i)
     LCR_game.menuItemNamePointers[i] = LCR_game.menuItemNames[i];
 
-  LCR_gameLoadMainMenuItems();
-
   LCR_game.menuSelectedTab = 0;
   LCR_game.menuSelectedItem = 0;
 
   LCR_game.frame = 0;
-  LCR_game.musicVolume = 255;
+  LCR_game.musicOn = 1;
   LCR_game.nextRenderFrameTime = 0;
   LCR_game.nextRacingTickTime = 0;
   LCR_game.controlMode = LCR_CONTROL_MODE_DRIVE;
 
+  LCR_gameLoadMainMenuItems();
+
   LCR_gameSetState(LCR_GAME_STATE_MENU);
 
   LCR_currentMap.blockCount = 0; // means no map loaded
@@ -677,6 +684,17 @@ void LCR_gameHandleInput(void)
           case 0:
             switch (LCR_game.menuSelectedItem)
             {
+              case 0:
+                break;
+
+              case 1:
+                LCR_game.musicOn = !LCR_game.musicOn;
+                break;
+
+              case 2:
+                LCR_audio.on = !LCR_audio.on;
+                break;
+
               case 4:
                 LCR_gameSetState(LCR_GAME_STATE_END);
                 break;
@@ -684,6 +702,7 @@ void LCR_gameHandleInput(void)
               default: break;
             }
 
+            LCR_gameLoadMainMenuItems();
             break;
 
           case 1:
@@ -708,6 +727,7 @@ void LCR_gameHandleInput(void)
       {
         LCR_LOG1("menu open");
         LCR_gameSetState(LCR_GAME_STATE_MENU);
+        LCR_game.menuSelectedItem = 0;
       }
       else if (LCR_game.keyStates[LCR_KEY_A] == 1)
         LCR_gameResetRun();
@@ -875,7 +895,7 @@ uint8_t LCR_gameStep(uint32_t time)
     LCR_sleep(sleep);
   else
   {
-    LCR_LOG1("can't sleep, frames take too long!");
+    LCR_LOG2("can't sleep");
   }
 
   LCR_game.frame++;