png支持

include/scene.hpp

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+#pragma once
+
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace boundard::render {
+class InputMap;
+}
+
+namespace boundard {
+
+class Actor;
+
+// 运行时场景：持有场景名和其中的 Actor，并统一驱动 Actor 的 init/tick。
+class Scene {
+   public:
+    explicit Scene(std::string name = {});
+    ~Scene();
+
+    Scene(const Scene&) = delete;
+    Scene& operator=(const Scene&) = delete;
+    Scene(Scene&&) noexcept = delete;
+    Scene& operator=(Scene&&) noexcept = delete;
+
+    const std::string& name() const;
+    void set_name(std::string name);
+
+    void add_actor(std::shared_ptr<Actor> actor);
+    void set_actors(std::vector<std::shared_ptr<Actor>> actors);
+    void clear();
+
+    const std::vector<Actor*>& actors() const;
+    std::vector<Actor*>& actors();
+
+    void initialize();
+    void process(float dt, const render::InputMap& input);
+
+   private:
+    std::string name_;
+    std::vector<std::shared_ptr<Actor>> actor_storage_;
+    std::vector<Actor*> actors_;
+};
+
+}  // namespace boundard