Refactor to use objects for terrain/mod creation, added coin modifier

mario/main.cpp

@@ -24,6 +24,8 @@ std::shared_ptr< Mario > mario = nullptr;
 std::shared_ptr< SDLPP::RectangleRender > leftStop = nullptr;
 std::shared_ptr< SDLPP::Renderer > renderer = nullptr;
 std::shared_ptr< SDLPP::TextRenderer > fps = nullptr;
+std::shared_ptr< SDLPP::TextRenderer > coins = nullptr;
+int coin_count = 0;
 
 std::mutex render_mutex;
 
@@ -136,6 +138,10 @@ void doInput( std::shared_ptr< SDLPP::Scene > scene ) {
             quit = true;
         }
         mario->handleVisitor(mv);
+        if ( mv.hasCoin() ) {
+            coin_count++;
+            coins->changeText(std::to_string(coin_count) + " COINS");
+        }
 
         // if player is > 0.7 of playground, move everything left
         auto playerX = mario->getRect().x;
@@ -217,6 +223,12 @@ int main() {
     fps->setHidden(true);
     scene->addObject(fps);
 
+    coins = std::make_shared<SDLPP::TextRenderer>(0.2, 0, 0.78, 0.1, renderer, font, "0 COINS", "#FFFFFF", "#000000", 0.1, SDLPP_TEXT_RIGHT);
+    coins->setAlignment(SDLPP::OBJ_START, SDLPP::OBJ_START);
+    coins->setId(0);
+    coins->setPermanent();
+    scene->addObject(coins);
+
     FPSmanager gFPS;
     SDL_initFramerate( &gFPS );
     SDL_setFramerate( &gFPS, 60 );