texture manager, going to pull out into a resource manager

src/engine/rendering/sdl/sdlrenderer.cpp

@@ -7,15 +7,25 @@
 void SdlRenderer::initialize(RendererParams params) {
     if(SDL_Init(SDL_INIT_VIDEO) < 0) {
         printf("SDL vide oinit failed: %s\n", SDL_GetError());
+        return;
     }
-    SDL_Window* sdl_window = SDL_CreateWindow(params.title, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, params.width, params.height, SDL_WINDOW_SHOWN);
+    auto img_flags = IMG_INIT_PNG;
+    if(!(IMG_Init(img_flags) & img_flags)) {
+        printf("Failed to init image loading: %s", IMG_GetError());
+        return;
+    }
+    SDL_Window* sdl_window = SDL_CreateWindow(params.title.c_str(), SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, params.width, params.height, SDL_WINDOW_SHOWN);
     if(sdl_window == nullptr) {
         printf("error making window: %s\n", SDL_GetError());
+        return;
     }
     else {
         this->window = sdl_window;
         SDL_Renderer* sdl_renderer = SDL_CreateRenderer(this->window, -1, SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC);
         this->renderer = sdl_renderer;
+
+        this->texture_manager = std::make_unique<SdlTextureManager>();
+
         SDL_RenderClear(this->renderer);
     }
 }
@@ -30,3 +40,19 @@ void SdlRenderer::draw_point(int x, int y, Color color) {
     SDL_SetRenderDrawColor(this->renderer, color.r, color.g, color.b, color.a);
     SDL_RenderDrawPoint(this->renderer, x, y);
 }
+
+void SdlRenderer::draw_text(std::string text, int x, int y) {
+
+}
+
+SdlRenderer::~SdlRenderer() {
+    // destroy components
+    SDL_DestroyRenderer(this->renderer);
+    this->renderer = nullptr;
+    SDL_DestroyWindow(this->window);
+    this->window = nullptr;
+
+    // exit subsystems
+    IMG_Quit();
+    SDL_Quit();
+}