Add Scene Base Class

src/scenes/base/Scene.h

@@ -0,0 +1,20 @@
+// ui/Scene.h - 场景基类
+#pragma once
+#include <SDL3/SDL.h>
+
+
+
+
+class Scene {
+public:
+    virtual ~Scene() = default;
+
+    // 空实现，可选择性重写
+    virtual void onEnter(){};
+    virtual void onExit(){};
+
+    virtual void update() = 0;
+    virtual void render(SDL_Renderer* renderer) = 0;
+
+};
+

src/scenes/base/SceneManager.cpp

@@ -0,0 +1,11 @@
+#include "SceneManager.h"
+
+SceneManager::SceneManager() {
+
+}
+
+SceneManager::~SceneManager() {
+    while (!m_scenes.empty()) {
+        m_scenes.pop();
+    }
+}

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;
+};