Closing #10

Implementing possibility to render background in main menu

src/main.cpp

@@ -17,8 +17,12 @@ int main() {
 
   MainMenu menu(0);
 
-  engine.set_scene(menu);
+  std::string basePath = SDL_GetBasePath();
+  std::string relativePath = "assets/main_background.png";
+  std::string fullPath = basePath + relativePath;
+  menu.loadBackground(engine.renderer(), fullPath.c_str());
 
+  engine.set_scene(menu);
   /* Level level("Osnabrück", 20, 20, std::vector<Tile>(), std::vector<Building>(),
               std::vector<Unit>());
 

src/ui/Menu.cpp

@@ -3,6 +3,7 @@
 #include <iostream>
 #include <vector>
 #include <string>
+#include <SDL_image.h>
 #include "Menu.hpp"
 
 namespace advanced_wars 
@@ -10,13 +11,19 @@ namespace advanced_wars
 
     MainMenu::MainMenu(int selectedOption)
         : selectedOption(selectedOption), 
-        options({"Start Game", "Options", "Exit"}) 
+        options({"Start Game", "Options", "Exit"}),
+        backgroundTexture(nullptr)
     {
-        
+        if (!(IMG_Init(IMG_INIT_PNG) & IMG_INIT_PNG)) {
+            std::cerr << "Failed to initialize SDL_image: " << IMG_GetError() << std::endl;
+        }
     }
 
     MainMenu::~MainMenu() {
-        
+        if (backgroundTexture) {
+            SDL_DestroyTexture(backgroundTexture);
+        }
+        IMG_Quit();
     };
 
     void MainMenu::render(SDL_Renderer *renderer, std::vector<SDL_Event> &events) {
@@ -28,9 +35,14 @@ namespace advanced_wars
         }
         
 
-        // Clear the screen with a background color
+        if (backgroundTexture) {
+            SDL_RenderCopy(renderer, backgroundTexture, nullptr, nullptr);
+        } else {
+            std::cout << "No background texture loaded" << std::endl;
+            // Falls kein Hintergrundbild vorhanden ist, cleare mit Schwarz
             SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
             SDL_RenderClear(renderer);
+        }
 
         // Initialize SDL_TTF if not already done
         if (TTF_Init() == -1) {
@@ -101,4 +113,22 @@ namespace advanced_wars
         }
     }
 
+    void MainMenu::loadBackground(SDL_Renderer *renderer, const std::string& imagePath) {
+    // Lade das Hintergrundbild
+    SDL_Surface* backgroundSurface = IMG_Load(imagePath.c_str());
+    if (!backgroundSurface) {
+        std::cerr << "Failed to load background image: " << IMG_GetError() << std::endl;
+        return;
+    }
+
+    // Erstelle eine Textur aus der Oberfläche und speichere sie als Klassenmitglied
+    backgroundTexture = SDL_CreateTextureFromSurface(renderer, backgroundSurface);
+    SDL_FreeSurface(backgroundSurface); // Oberfläche freigeben, da sie nicht mehr benötigt wird
+
+    if (!backgroundTexture) {
+        std::cerr << "Failed to create background texture: " << SDL_GetError() << std::endl;
+    }
+}
+
+
 }

src/ui/Menu.hpp

@@ -20,6 +20,7 @@ class MainMenu : public Scene {
 private:
     size_t selectedOption;
     std::array<std::string, 3> options;
+    SDL_Texture* backgroundTexture;
     
 public:
 
@@ -29,6 +30,8 @@ public:
 
     void handleEvent(SDL_Event& event);
 
+    void loadBackground(SDL_Renderer *renderer, const std::string& imagePath);
+
     ~MainMenu();
 };