added stars to gameplay grid

src/graphics/Starfield3D.h

@@ -13,7 +13,7 @@ public:
 
     void init(int width, int height, int starCount = 160);
     void update(float deltaTime);
-    void draw(SDL_Renderer* renderer);
+    void draw(SDL_Renderer* renderer, float offsetX = 0.0f, float offsetY = 0.0f, float alphaScale = 1.0f, bool grayscale = false);
     void resize(int width, int height);
 
 private:
@@ -32,7 +32,7 @@ private:
     void setRandomDirection(Star3D& star);
     float randomFloat(float min, float max);
     int randomRange(int min, int max);
-    void drawStar(SDL_Renderer* renderer, float x, float y, int type);
+    void drawStar(SDL_Renderer* renderer, float x, float y, SDL_Color color, float alphaScale);
 
     std::vector<Star3D> stars;
     int width{0}, height{0};