81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
#pragma once
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#include <extra2d/core/types.h>
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#include <extra2d/scene/scene.h>
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#include <functional>
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#include <stack>
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#include <string>
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#include <unordered_map>
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#include <vector>
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namespace extra2d {
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struct RenderCommand;
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/**
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* @brief 场景管理器 - 管理场景的生命周期和切换
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*/
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class SceneManager {
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public:
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using TransitionCallback = std::function<void()>;
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static SceneManager &get();
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void runWithScene(SharedPtr<Scene> scene);
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void replaceScene(SharedPtr<Scene> scene);
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void pushScene(SharedPtr<Scene> scene);
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void popScene();
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void popToRootScene();
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void popToScene(const std::string &name);
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SharedPtr<Scene> getCurrentScene() const;
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SharedPtr<Scene> getPreviousScene() const;
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SharedPtr<Scene> getRootScene() const;
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SharedPtr<Scene> getSceneByName(const std::string &name) const;
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size_t getSceneCount() const { return sceneStack_.size(); }
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bool isEmpty() const { return sceneStack_.empty(); }
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bool hasScene(const std::string &name) const;
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void update(float dt);
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void render(RenderBackend &renderer);
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void collectRenderCommands(std::vector<RenderCommand> &commands);
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bool isTransitioning() const { return isTransitioning_; }
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void setTransitionCallback(TransitionCallback callback) {
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transitionCallback_ = callback;
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}
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void end();
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void purgeCachedScenes();
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public:
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SceneManager() = default;
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~SceneManager() = default;
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SceneManager(const SceneManager &) = delete;
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SceneManager &operator=(const SceneManager &) = delete;
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void enterScene(SharedPtr<Scene> scene);
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private:
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void doSceneSwitch();
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void dispatchPointerEvents(Scene &scene);
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std::stack<SharedPtr<Scene>> sceneStack_;
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std::unordered_map<std::string, SharedPtr<Scene>> namedScenes_;
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bool isTransitioning_ = false;
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TransitionCallback transitionCallback_;
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SharedPtr<Scene> nextScene_;
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bool sendCleanupToScene_ = false;
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Node *hoverTarget_ = nullptr;
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Node *captureTarget_ = nullptr;
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Vec2 lastPointerWorld_ = Vec2::Zero();
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bool hasLastPointerWorld_ = false;
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};
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} // namespace extra2d
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