ADD: Quit when Quit button is pressed

CMakeLists.txt

@@ -265,6 +265,9 @@ add_library(Engine STATIC
         engine/src/renderer/GuiRenderer.h
         engine/src/renderer/ui/GUITexture.cpp
         engine/src/renderer/ui/GUITexture.h
+        engine/src/core/events/ApplicationEvents.h
+        engine/src/core/events/EventChannels.cpp
+        engine/src/core/events/EventChannels.h
 )
 target_include_directories(Engine PUBLIC engine/src ${dr_libs_SOURCE_DIR})
 target_link_libraries(Engine PUBLIC OpenGL::GL glfw glad glm::glm imgui spdlog::spdlog tinyobjloader stb_image OpenAL::OpenAL NetworkCore)

engine/src/core/Application.cpp

@@ -15,7 +15,16 @@ namespace engine {
           m_inputContextStack(),
           m_keyboard(*m_window),
           m_mouse(*m_window),
-          m_sceneManager(m_inputContextStack) {
+          m_sceneManager(m_inputContextStack),
+          m_applicationEventBus(std::make_shared<EventBus<ApplicationEvents>>()) {
+        m_applicationEventBus->subscribe([this](ApplicationEvents& event) {
+            std::visit([this](auto&& e) {
+                using T = std::decay_t<decltype(e)>;
+                if constexpr (std::is_same_v<T, QuitRequested>) {
+                    m_window->requestWindowClose();
+                }
+            }, event);
+        });
     }
 
     Application::~Application() = default;

engine/src/core/Application.h

@@ -11,6 +11,7 @@
 
 #include "Window.h"
 #include "audio/AudioDevice.h"
+#include "events/ApplicationEvents.h"
 #include "inputsOutputs/context/InputContextStack.h"
 #include "inputsOutputs/inputs/Keyboard.h"
 #include "inputsOutputs/inputs/Mouse.h"
@@ -25,6 +26,7 @@ namespace engine {
         virtual ~Application();
 
         void run();
+        void requestClose();
 
     protected:
         virtual void onUpdate(float deltaTime) {}
@@ -34,6 +36,7 @@ namespace engine {
         Keyboard& getKeyboard() { return m_keyboard; }
         Mouse& getMouse() { return m_mouse; }
 
+        std::shared_ptr<EventBus<ApplicationEvents>> m_applicationEventBus;
     private:
         EngineConfig m_config;
         std::unique_ptr<Window> m_window;

engine/src/core/Window.cpp

@@ -84,4 +84,8 @@ namespace engine {
         glfwGetFramebufferSize(m_handle, &width, &height);
         return height;
     }
+
+    void Window::requestWindowClose() {
+        glfwSetWindowShouldClose(m_handle, true);
+    }
 }

engine/src/core/Window.h

@@ -36,6 +36,8 @@ namespace engine {
 
         void setMouse(Mouse* mouse) { m_callbackTarget.mouse = mouse; }
         void setKeyboard(Keyboard* keyboard) { m_callbackTarget.keyboard = keyboard; }
+
+        void requestWindowClose();
     private:
         GLFWwindow* m_handle;
         CallbackTarget m_callbackTarget;

engine/src/core/events/ApplicationEvents.h

@@ -0,0 +1,13 @@
+//
+// Created by sebastian on 06.08.26.
+//
+
+#ifndef COLORRACE_APPLICATIONEVENTS_H
+#define COLORRACE_APPLICATIONEVENTS_H
+#include <variant>
+
+struct QuitRequested {};
+
+
+using ApplicationEvents = std::variant<QuitRequested>;
+#endif //COLORRACE_APPLICATIONEVENTS_H

engine/src/core/events/EventBus.h

@@ -7,6 +7,11 @@
 #include <functional>
 
 namespace engine {
+    class IEventBus {
+    public:
+        virtual ~IEventBus() = default;
+    };
+
     template<typename Event>
     class EventBus {
     public:

engine/src/core/events/EventChannels.cpp

@@ -0,0 +1,5 @@
+//
+// Created by sebastian on 06.08.26.
+//
+
+#include "EventChannels.h"

engine/src/core/events/EventChannels.h

@@ -0,0 +1,43 @@
+//
+// Created by sebastian on 06.08.26.
+//
+
+#ifndef COLORRACE_EVENTCHANNELS_H
+#define COLORRACE_EVENTCHANNELS_H
+#include <memory>
+#include <typeindex>
+
+#include "EventBus.h"
+
+
+namespace engine {
+    class EventChannels {
+    public:
+        template<typename Event>
+        void subscribe(typename EventBus<Event>::Handler handler) {
+            getBus<Event>().subscribe(std::move(handler));
+        }
+
+        template<typename Event>
+        void publish(Event& event) {
+            getBus<Event>().publish(event);
+        }
+
+        template<typename Event>
+        EventBus<Event>& getBus() {
+            auto key = std::type_index(typeid(Event));
+            auto it = m_buses.find(key);
+            if (it == m_buses.end()) {
+                auto bus = std::make_unique<EventBus<Event>>();
+                auto* ptr = bus.get();
+                m_buses.emplace(key, std::move(bus));
+                return *ptr;
+            }
+            return static_cast<EventBus<Event>&>(*it->second);
+        }
+    private:
+        std::unordered_map<std::type_index, std::unique_ptr<IEventBus>> m_buses;
+    };
+}
+
+#endif //COLORRACE_EVENTCHANNELS_H

engine/src/layer/Layer.h

@@ -5,6 +5,7 @@
 #ifndef COLORRACE_LAYER_H
 #define COLORRACE_LAYER_H
 #include "core/animation/events/AnimationMarkerEvent.h"
+#include "core/events/ApplicationEvents.h"
 #include "core/events/EventBus.h"
 #include "core/inputsOutputs/context/InputContextStack.h"
 #include "core/inputsOutputs/inputs/Keyboard.h"
@@ -16,6 +17,7 @@ namespace engine {
     class Layer {
     public:
         Layer(Keyboard& keyboard, Mouse& mouse, EventBus<animation::AnimationMarkerEvent>& animationEventBus) : m_keyboard(keyboard), m_mouse(mouse), m_animationEventBus(animationEventBus){};
+        Layer(Keyboard& keyboard, Mouse& mouse, EventBus<animation::AnimationMarkerEvent>& animationEventBus, std::shared_ptr<EventBus<ApplicationEvents>> applicationEventBus) : m_keyboard(keyboard), m_mouse(mouse), m_animationEventBus(animationEventBus), m_applicationEventBus(std::move(applicationEventBus)){};
         virtual ~Layer() = default;
         void onAttach(InputContextStack& inputStack);
         void onDetach(InputContextStack& inputStack);
@@ -29,6 +31,8 @@ namespace engine {
         Keyboard& getKeyboard() { return m_keyboard; }
         Mouse& getMouse() { return m_mouse; }
         EventBus<animation::AnimationMarkerEvent>& getAnimationEventBus() { return m_animationEventBus; }
+
+        std::shared_ptr<EventBus<ApplicationEvents>> m_applicationEventBus;
     private:
         std::shared_ptr<InputContext> m_context;
         InputContextStack* m_inputStack = nullptr;

engine/src/layer/Scene.h

@@ -9,6 +9,7 @@
 
 #include "Layer.h"
 #include "core/animation/events/AnimationMarkerEvent.h"
+#include "core/events/ApplicationEvents.h"
 #include "core/events/EventBus.h"
 #include "loader/assets/AssetManager.h"
 #include "loader/assets/AssetRequests.h"
@@ -23,8 +24,8 @@ namespace engine {
 
     class Scene {
     public:
-        explicit Scene(engine::InputContextStack& inputStack, engine::Keyboard& keyboard, engine::Mouse& mouse):
-            assetManager(std::make_unique<AssetManager>()), m_inputStack(inputStack), m_keyboard(keyboard), m_mouse(mouse)  {}
+        explicit Scene(std::shared_ptr<engine::EventBus<ApplicationEvents>> applicationEventbus, engine::InputContextStack& inputStack, engine::Keyboard& keyboard, engine::Mouse& mouse):
+            assetManager(std::make_unique<AssetManager>()), m_inputStack(inputStack), m_keyboard(keyboard), m_mouse(mouse), m_applicationEventBus(std::move(applicationEventbus))  {}
         virtual ~Scene() = default;
         virtual void onEnter() {}
         virtual void onExit() {
@@ -51,9 +52,10 @@ namespace engine {
 
         engine::Keyboard& m_keyboard;
         engine::Mouse& m_mouse;
-
+        std::shared_ptr<engine::EventBus<ApplicationEvents>> m_applicationEventBus;
     private:
         EventBus<animation::AnimationMarkerEvent> m_animationMarkerEventBus;
+
     };
 }
 

game/src/ColorRaceApp.h

@@ -34,7 +34,7 @@ public:
         return config;
     }
     ColorRaceApp() : Application(makeConfig()) {
-        getSceneManager().switchTo(std::make_unique<MainMenuScene>(getInputContextStack(), getKeyboard(), getMouse()));
+        getSceneManager().switchTo(std::make_unique<MainMenuScene>(m_applicationEventBus, getInputContextStack(), getKeyboard(), getMouse()));
     }
 protected:
     void onUpdate(float deltaTime) override;

game/src/GameScene.cpp

@@ -12,7 +12,7 @@
 #include "layer/DebugLayer.h"
 #include "renderer/primitives/SphereFactory.h"
 
-GameScene::GameScene(engine::InputContextStack& inputStack, engine::Keyboard& keyboard, engine::Mouse& mouse) : Scene(inputStack, keyboard, mouse), m_camera(std::make_unique<engine::Camera>()) {
+GameScene::GameScene(std::shared_ptr<engine::EventBus<ApplicationEvents>> applicationEventbus, engine::InputContextStack& inputStack, engine::Keyboard& keyboard, engine::Mouse& mouse) : Scene(std::move(applicationEventbus), inputStack, keyboard, mouse), m_camera(std::make_unique<engine::Camera>()) {
     m_pointLight = std::make_shared<engine::PointLight>(glm::vec3(.0f, 10.f, -5.0f), glm::vec3(1.0f, 1.0f, 1.0f));
     const std::vector<unsigned int> players = {0,1,2,3};
     m_gameMode = std::make_shared<ludo::LudoGameMode>(m_eventBus, players);

game/src/GameScene.h

@@ -12,7 +12,7 @@
 
 class GameScene : public engine::Scene {
 public:
-    GameScene(engine::InputContextStack& inputContext, engine::Keyboard& keyboard, engine::Mouse& mouse);
+    GameScene(std::shared_ptr<engine::EventBus<ApplicationEvents>> applicationEventbus, engine::InputContextStack& inputContext, engine::Keyboard& keyboard, engine::Mouse& mouse);
     void onEnter() override;
     void onExit() override;
     std::vector<engine::AssetRequest> getRequiredAssets() const override;

game/src/mainMenu/MainMenuScene.cpp

@@ -8,7 +8,7 @@
 
 void MainMenuScene::onEnter() {
     Scene::onEnter();
-    addLayer(std::make_unique<MainMenuUiLayer>(m_keyboard, m_mouse, getAnimationEventBus(), *assetManager));
+    addLayer(std::make_unique<MainMenuUiLayer>(m_keyboard, m_mouse, getAnimationEventBus(), m_applicationEventBus, *assetManager));
 }
 
 std::vector<engine::AssetRequest> MainMenuScene::getRequiredAssets() const {

game/src/mainMenu/MainMenuScene.h

@@ -4,12 +4,14 @@
 
 #ifndef COLORRACE_MAINMENUSCENE_H
 #define COLORRACE_MAINMENUSCENE_H
+#include <utility>
+
 #include "layer/Scene.h"
 
 
 class MainMenuScene : public engine::Scene {
 public:
-    MainMenuScene(engine::InputContextStack& inputContext, engine::Keyboard& keyboard, engine::Mouse& mouse) : Scene(inputContext, keyboard, mouse) {}
+    MainMenuScene(std::shared_ptr<engine::EventBus<ApplicationEvents>> applicationEventbus, engine::InputContextStack& inputContext, engine::Keyboard& keyboard, engine::Mouse& mouse) : Scene(std::move(applicationEventbus), inputContext, keyboard, mouse) {}
     void onEnter() override;
     std::vector<engine::AssetRequest> getRequiredAssets() const override;
 };

game/src/mainMenu/layer/MainMenuUiLayer.cpp

@@ -35,7 +35,8 @@ void MainMenuUiLayer::onRender() {
     ImGui::Spacing();
 
     if (ImGui::Button("Quit", buttonSize)) {
-
+        ApplicationEvents e = QuitRequested{};
+        m_applicationEventBus->publish(e);
     }
 
     ImGui::End();

game/src/mainMenu/layer/MainMenuUiLayer.h

@@ -4,6 +4,8 @@
 
 #ifndef COLORRACE_MAINMENUUILAYER_H
 #define COLORRACE_MAINMENUUILAYER_H
+#include <utility>
+
 #include "layer/Layer.h"
 #include "loader/assets/AssetManager.h"
 #include "renderer/GuiRenderer.h"
@@ -12,8 +14,8 @@
 
 class MainMenuUiLayer : public engine::Layer {
 public:
-    MainMenuUiLayer(engine::Keyboard &keyboard, engine::Mouse &mouse, engine::EventBus<engine::animation::AnimationMarkerEvent> &animationEventBus, engine::AssetManager& assetManager)
-    : Layer(keyboard, mouse, animationEventBus), m_assetManager(assetManager) {
+    MainMenuUiLayer(engine::Keyboard &keyboard, engine::Mouse &mouse, engine::EventBus<engine::animation::AnimationMarkerEvent> &animationEventBus, std::shared_ptr<engine::EventBus<ApplicationEvents>> applicationEventbus, engine::AssetManager& assetManager)
+    : Layer(keyboard, mouse, animationEventBus, std::move(applicationEventbus)), m_assetManager(assetManager) {
     }
 
     void onRender() override;