font loading and drawing chars

src/Game.cpp

@@ -12,6 +12,7 @@
 const int CHAR_SIZE = 30;
 const int STEP_SIZE = CHAR_SIZE + CHAR_SIZE / 2;
 const int UNDERSCORE_DY = 10;
+const SDL_Color TEXT_COLOR = {255, 255, 255};
 
 void Game::Run() {
     if (SDL_Init(SDL_INIT_VIDEO) < 0) {
@@ -121,6 +122,33 @@ void Game::draw_guesses(SDL_Renderer *renderer) {
         const SDL_Rect rect = {here, char_y + UNDERSCORE_DY, CHAR_SIZE, 5};
         SDL_SetRenderDrawColor(renderer, 255, 0, 0, SDL_ALPHA_OPAQUE);
         SDL_RenderFillRect(renderer, &rect);
+
+        std::optional<char> current_char = guess_corrector->guessed().lock()[i];
+        if (current_char) {
+            const char *text_to_write = &*current_char;
+
+            SDL_Surface *surface = TTF_RenderText_Solid(font, text_to_write, TEXT_COLOR);
+            if (surface == nullptr) {
+                std::cerr << "Failed to create surface: " << TTF_GetError() << std::endl;
+                continue;
+            }
+
+            SDL_Texture *txt = SDL_CreateTextureFromSurface(renderer, surface);
+            if (txt == nullptr) {
+                std::cerr << "Failed to create texture: " << SDL_GetError() << std::endl;
+                SDL_FreeSurface(surface);
+                continue;
+            }
+
+            int text_width = surface->w;
+            int text_height = surface->h;
+            SDL_Rect text_rect = {here + (CHAR_SIZE - text_width) / 2, char_y - text_height, text_width, text_height};
+
+            SDL_RenderCopy(renderer, txt, nullptr, &text_rect);
+
+            SDL_DestroyTexture(txt);
+            SDL_FreeSurface(surface);
+        }
     }
 
     SDL_RenderPresent(renderer);

src/Game.hpp

@@ -15,7 +15,7 @@ private:
     std::vector<const char *> all_words;
     std::unique_ptr<GuessCorrector> guess_corrector;
     const char *word;
-    const _TTF_Font *font;
+    _TTF_Font *font;
 
 public:
     static void Run();