Add Scene Base Class

src/scenes/base/SceneManager.h

@@ -0,0 +1,22 @@
+#pragma once
+#include "Scene.h"
+#include <string>
+#include <stack>
+#include <memory>
+#include <unordered_map>
+class SceneManager {
+public:
+    SceneManager();
+    ~SceneManager();
+
+    void PushScene(const std::string& sceneName, std::unique_ptr<Scene> scene);
+    void PopScene();
+    void ChangeScene(const std::string& sceneName, std::unique_ptr<Scene> scene);
+
+
+
+private:
+    // 用栈的形式来存储场景
+    std::stack<std::unique_ptr<Scene>> m_scenes;
+    std::unordered_map<std::string, std::unique_ptr<Scene>> m_sceneCache;
+};