Initial engine repository

Frostbite2D/include/frostbite2D/scene/scene.h

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+#pragma once
+
+#include <frostbite2D/2d/actor.h>
+#include <frostbite2D/event/event.h>
+#include <frostbite2D/graphics/render_style.h>
+#include <vector>
+
+namespace frostbite2D {
+
+class Scene : public Actor {
+public:
+  Scene();
+  virtual ~Scene();
+
+  virtual void onEnter();
+  virtual void onExit();
+
+  void Update(float deltaTime) override;
+  void Render() override;
+
+  bool OnEvent(const Event& event) override;
+  /**
+   * @brief 为当前场景指定渲染风格预设
+   */
+  void SetRenderStyleProfile(RenderStyleProfileId profile);
+  /**
+   * @brief 清除场景级渲染风格覆盖，回退到应用默认值
+   */
+  void ClearRenderStyleProfileOverride();
+  bool HasRenderStyleProfileOverride() const { return hasRenderStyleProfileOverride_; }
+  /**
+   * @brief 解析当前场景最终应使用的渲染风格
+   */
+  RenderStyleProfileId ResolveRenderStyleProfile(
+      RenderStyleProfileId defaultProfile) const;
+  
+  static Scene* GetCurrent();
+
+private:
+  bool dispatchToChildren(const Event& event);
+  
+  static Scene* current_;
+  bool hasRenderStyleProfileOverride_ = false;
+  RenderStyleProfileId renderStyleProfileOverride_ = RenderStyleProfileId::Hybrid2D;
+
+  friend class SceneManager;
+};
+
+}

Frostbite2D/include/frostbite2D/scene/scene_manager.h

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+#pragma once
+
+#include <frostbite2D/event/event.h>
+#include <frostbite2D/types/type_alias.h>
+#include <vector>
+
+namespace frostbite2D {
+
+class Scene;
+class UIScene;
+
+class SceneManager {
+public:
+  static SceneManager& get();
+
+  SceneManager(const SceneManager&) = delete;
+  SceneManager& operator=(const SceneManager&) = delete;
+
+  void PushScene(Ptr<Scene> scene);
+  void PopScene();
+  void ReplaceScene(Ptr<Scene> scene);
+
+  void PushUIScene(Ptr<UIScene> scene);
+  void PopUIScene();
+  void ReplaceUIScene(Ptr<UIScene> scene);
+  bool RemoveUIScene(UIScene* scene);
+  void ClearUIScenes();
+  void ClearAll();
+
+  void Update(float deltaTime);
+  void UpdateUI(float deltaTime);
+  void Render();
+
+  bool DispatchEvent(const Event& event);
+  bool DispatchUIEvent(const Event& event);
+
+  Scene* GetCurrentScene() const;
+  UIScene* GetCurrentUIScene() const;
+  bool HasActiveScene() const;
+  bool HasActiveUIScene() const;
+
+private:
+  SceneManager() = default;
+
+  std::vector<Ptr<Scene>> sceneStack_;
+  std::vector<Ptr<UIScene>> uiSceneStack_;
+};
+
+} // namespace frostbite2D

Frostbite2D/include/frostbite2D/scene/ui_scene.h

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+#pragma once
+
+#include <frostbite2D/graphics/camera.h>
+#include <frostbite2D/scene/scene.h>
+
+namespace frostbite2D {
+
+class UIScene : public Scene {
+public:
+  UIScene();
+  ~UIScene() override = default;
+
+  Camera* GetCamera() { return &camera_; }
+  const Camera* GetCamera() const { return &camera_; }
+
+private:
+  Camera camera_;
+};
+
+} // namespace frostbite2D