Add attempt for Entity::GetComponent

include/entity.h

@@ -8,12 +8,9 @@ class Entity {
 public:
   template <typename CompT, typename... Args>
   Component *AddComponent(Args &&...args);
+  template <typename CompT> Component *GetComponent();
 
-  void Init();
-  void Draw();
   void Update();
-  void FixedUpdate();
-  void Destroy();
 
 private:
   std::vector<std::unique_ptr<Component>> components;

src/entity_i.cpp

@@ -11,3 +11,10 @@ Component *Entity::AddComponent(Args &&...args) {
   components.push_back(std::make_unique(std::forward<Args>(args)...));
   return components.back().get();
 }
+
+template <typename CompT> Component *Entity::GetComponent() {
+  for (const auto &comp_ptr : components) {
+    if (auto *comp = dynamic_cast<CompT *>(comp_ptr.get()))
+      return comp;
+  }
+}