Add blinking 'ENTER' at the end of the leaderboard

by pressing 'ENTER' game can be restarted

include/config.h

@@ -3,6 +3,7 @@
 // global configuration macros
 #define MAX_MAP_SIZE 20
 #define MAX_MAP_FIELDS (MAX_MAP_SIZE*MAX_MAP_SIZE)
+#define CYCLE_DURATIONS_MS 400
 
 // logging settings
 //#define DEBUG_OUTPUT_ENABLED

src/config.c

@@ -5,7 +5,7 @@
 config_t config = {
     .windowSize = 800,
     .blockSizePx = 800/10, //default map is 10x10 blocks
-    .cycleDurationMs = 400,
+    .cycleDurationMs = CYCLE_DURATIONS_MS,
     .difficulty = 1,
     .snakeDefaultLength = 2,
     .leaderboardFilename = "player_scores.bin",

src/menu.c

@@ -82,11 +82,16 @@ void showLeaderboard()
     //play audio file, wait until playback is finished
     //note: when displaying actual leaderboard, the second parameter should be 'false' to not block the program
     
-    renderLeaderboard();
+    time_t now =  GET_TIME_MS();
+
+    // is used to make ENTER blink
+    if(now > (ttlStorage.lastTimeStep + ttlStorage.cycleDuration))
+    {   
+        ttlStorage.showEnter = !ttlStorage.showEnter;       
+        renderLeaderboard();
+    }
 
     return;
-    
-    
 }
 
 void showPauseScreen()
@@ -235,8 +240,10 @@ void menuHandleInput(SDL_Event event){
                 }  
 
                 // initialize game
+                LOGI("Schwierigkeitslevel: %d\n", ttlStorage.userDifficultyLevel);
                 config.difficulty = ttlStorage.userDifficultyLevel;
-                config.cycleDurationMs = config.cycleDurationMs / sqrt(config.difficulty);
+                config.cycleDurationMs = CYCLE_DURATIONS_MS / sqrt(config.difficulty);
+                
                 gameInit();
           
                 break;
@@ -283,8 +290,18 @@ void menuHandleInput(SDL_Event event){
         switch(event.key.keysym.sym)
         {
         case SDLK_q:       // q: quit
-        case SDLK_RETURN:   
             game.gameState = EXIT;
+            break;
+
+        case SDLK_RETURN:   // go to first page
+            game.gameState = MENU;
+            activeMenu = START;
+            ttlStorage.lastTimeStep = 0;
+            ttlStorage.inputStatus = 0;
+            ttlStorage.userDifficultyLevel = 0;
+            ttlStorage.userSelectedMap = 0;
+            game.mapIsLoaded = false;
+            break;
         } 
         break;
     }

src/render.c

@@ -459,7 +459,11 @@ void renderInfoScreen()
 void renderLeaderboard()
 {
 
-    char* menuDescription[] ={"LEADERBOARD"};
+    char* textLines[] ={
+        "LEADERBOARD",
+        "-- ENTER --"
+      };
+    
     char* columnDescriptions[NUM_COLUMNS] = 
     {   
         "Score",
@@ -468,6 +472,7 @@ void renderLeaderboard()
         "Map"
     };
     
+
         SDL_SetRenderDrawColor(game.renderer, 0, 0, 0, 255);
         SDL_RenderClear(game.renderer);
 
@@ -477,8 +482,7 @@ void renderLeaderboard()
         
 
         // rendering 'LEADERBOARD'
-        
-        ttlStorage.textSurface = TTF_RenderText_Solid(ttlStorage.ptrFont_30, menuDescription[0], ttlStorage.textColour[5]);
+        ttlStorage.textSurface = TTF_RenderText_Solid(ttlStorage.ptrFont_30, textLines[0], ttlStorage.textColour[5]);
         ttlStorage.textTexture = SDL_CreateTextureFromSurface(game.renderer, ttlStorage.textSurface);
 
         SDL_QueryTexture(ttlStorage.textTexture, NULL, NULL, &textWidth, &textHeight);
@@ -490,6 +494,23 @@ void renderLeaderboard()
         SDL_DestroyTexture(ttlStorage.textTexture);
 
 
+        // rendering and print '-- ENTER --' every second cycle
+        if(ttlStorage.showEnter)
+        {
+          ttlStorage.textSurface = TTF_RenderText_Solid(ttlStorage.ptrFont_30, textLines[1], ttlStorage.textColour[5]);
+          ttlStorage.textTexture = SDL_CreateTextureFromSurface(game.renderer, ttlStorage.textSurface);
+
+          ttlStorage.textPrintPosition = (config.windowSize / 1.5);   // print position for ENTER
+          SDL_QueryTexture(ttlStorage.textTexture, NULL, NULL, &textWidth, &textHeight);
+
+          SDL_Rect dstRect = { (config.windowSize - textWidth) / 2, ttlStorage.textPrintPosition, textWidth, textHeight };;
+          SDL_RenderCopy(game.renderer, ttlStorage.textTexture, NULL, &dstRect);
+
+          SDL_FreeSurface(ttlStorage.textSurface);
+          SDL_DestroyTexture(ttlStorage.textTexture);
+        }
+
+
         // rendering columns description
         for (int i = 0; i < NUM_COLUMNS; ++i) {
             ttlStorage.textSurface = TTF_RenderText_Solid(ttlStorage.ptrFont_30, columnDescriptions[i], ttlStorage.textColour[5]);
@@ -565,6 +586,7 @@ void renderLeaderboard()
                 SDL_DestroyTexture(numberTexture2);
     }
     SDL_RenderPresent(game.renderer);
+    ttlStorage.lastTimeStep = GET_TIME_MS();
     
 }