Change how some classes are destroyed

include/simpleengine/async_event.h

@@ -46,16 +46,10 @@ namespace simpleengine {
             }
         };
         
-        const bool& WantsToQuit() {
-            return quit;
-        }
-
-        // Abstract methods
-        virtual void CheckForQuit() = 0; // Ran every Update to check if we're gonna quit.
-        virtual void Quiting() {} // Ran when a State is about to be destroyed.
-        
         virtual void AsyncUpdate(const float delta_time) = 0;
 
+        // DO NOT OVERRIDE THIS FUNCTION
+        // Notify the update thread to trigger the async update.
         virtual void Update(const float& delta_time) final {
             std::unique_lock<std::mutex> unique_lock(mutex);
             tick_delta_time = delta_time;

include/simpleengine/component.h

@@ -16,11 +16,10 @@ namespace simpleengine {
     class Component {
     public:
         explicit Component(Entity& owning_entity);
-        //virtual ~Component() = default;
+        virtual ~Component() = default;
 
-        //virtual void Destroying(); // Called when the Component is about to be destroyed.
+        virtual void Destroy(); // In most cases, this will be ran next Entity::Update.
-        void DestroyLater(); // In most cases, this will be ran next Entity::Update.
+        const bool& IsDestroying() const;
-        const bool& IsGettingDestroyed() const;
 
         virtual void Update(const float& delta_time) = 0;
         virtual void Render(sf::RenderTarget* target) {}; // Most components won't need to be rendered.

include/simpleengine/entity.h

@@ -36,11 +36,8 @@ namespace simpleengine {
         virtual void Render(sf::RenderTarget* target);
         virtual void Update(const float& delta_time);
 
-        // Called when the entity is about to be destroyed.
+        virtual void Destroy();
-        // Make sure to implment this in your extending Entity.
+        const bool& IsDestroying() const;
-        virtual void Destroying();
-        void DestroyLater(); // In most cases, this will be ran next EntityEvent::Update()
-        const bool& IsGettingDestroyed() const;
 
         template<typename T>
         bool HasComponent() const {

include/simpleengine/event.h

@@ -15,13 +15,19 @@ namespace simpleengine {
         explicit Event(sf::RenderWindow* window = nullptr) : window(window) {}
         virtual ~Event() = default;
 
-        const bool& WantsToQuit() {
+        // Check if this event is quitting.
+        virtual const bool& IsQuitting() {
             return quit;
         }
 
+        // Quit the event at next tick.
+        virtual void Quit() {
+            quit = true;
+        }
+
         // Abstract methods
-        virtual void CheckForQuit() = 0; // Ran every Update to check if we're gonna quit.
+        //virtual void CheckForQuit() = 0; // Ran every Update to check if we're gonna quit.
-        virtual void Quiting() {} // Ran when a State is about to be destroyed.
+        //virtual void Quiting() {} // Ran when a State is about to be destroyed.
         virtual void Update(const float& delta_time) = 0;
         virtual void Render(sf::RenderTarget* target) = 0;
     protected:

include/simpleengine/events/collision_handler.h

@@ -18,7 +18,6 @@ namespace simpleengine {
         }
 
         void Update(const float& delta_time) override;
-        void CheckForQuit() override { }
         void Render(sf::RenderTarget* target) override { }
     private:
         std::vector<std::shared_ptr<Entity>> entities;

include/simpleengine/events/entity_event.h

@@ -17,14 +17,12 @@ namespace simpleengine {
 
         }
 
-        void CheckForQuit() override {
-            if (entity->IsGettingDestroyed()) {
-                quit = true;
-            }
-        }
-
         void Update(const float& delta_time) override {
             entity->Update(delta_time);
+
+            if (entity->IsDestroying()) {
+                quit = true;
+            }
         }
 
         void Render(sf::RenderTarget* target) override {

src/component.cpp

@@ -10,10 +10,10 @@ simpleengine::Component::Component(Entity& owning_entity) : owning_entity(owning
 
 }
 
-void simpleengine::Component::DestroyLater() {
+void simpleengine::Component::Destroy() {
     destroying = true;
 }
 
-const bool &simpleengine::Component::IsGettingDestroyed() const {
+const bool& simpleengine::Component::IsDestroying() const {
     return destroying;
 }

src/entity.cpp

@@ -32,11 +32,14 @@ void simpleengine::Entity::Update(const float &delta_time) {
 }
 
 void simpleengine::Entity::UpdateComponents(const float& delta_time) {
-    for (std::shared_ptr<Component>& component : components) {
+    // Update each component and if they are being destroyed, destroy them.
-        component->Update(delta_time);
+    for (std::vector<std::shared_ptr<Component>>::iterator it = components.begin(); it != components.end(); ) {
+        (*it)->Update(delta_time);
 
-        if (component->IsGettingDestroyed()) {
+        if ((*it)->IsDestroying()) {
-            components.erase(std::remove(components.begin(), components.end(), component));
+            it = components.erase(it);
+        } else {
+            ++it;
         }
     }
 }
@@ -47,16 +50,10 @@ void simpleengine::Entity::RenderComponents(sf::RenderTarget* target) {
     }
 }
 
-void simpleengine::Entity::Destroying() {
+void simpleengine::Entity::Destroy() {
-    for (std::shared_ptr<Component>& component : components) {
-        component->DestroyLater();
-    }
-}
-
-void simpleengine::Entity::DestroyLater() {
     destroying = true;
 }
 
-const bool &simpleengine::Entity::IsGettingDestroyed() const {
+const bool& simpleengine::Entity::IsDestroying() const {
     return destroying;
 }

src/game.cpp

@@ -51,9 +51,7 @@ void simpleengine::Game::Update() {
     for (std::vector<Event*>::iterator it = events.begin(); it != events.end(); ) {
         (*it)->Update(delta_time);
 
-        if ((*it)->WantsToQuit()) {
+        if ((*it)->IsQuitting()) {
-            (*it)->Quiting();
-
             delete (*it);
             it = events.erase(it);
         } else {