完成窗口创建

src/engine/core/game_app.cpp

@@ -0,0 +1,86 @@
+#include "game_app.h"
+#include <SDL3/SDL.h>
+#include <spdlog/spdlog.h>
+
+namespace engine::core {
+
+GameApp::GameApp() = default;
+
+GameApp::~GameApp() {
+    if (is_running_) {
+        spdlog::warn("GameApp 被销毁时没有显式关闭。现在关闭。 ...");
+        close();
+    }
+}
+
+void GameApp::run() {
+    if (!init()) {
+        spdlog::error("初始化失败，无法运行游戏。");
+        return;
+    }
+
+    while (is_running_) {
+        float delta_time = 0.01f; // 每帧的时间间隔（临时设定）
+        handleEvents();
+        update(delta_time);
+        render();
+    }
+
+    close();
+}
+
+bool GameApp::init() {
+    spdlog::trace("初始化 GameApp ...");
+    if (!SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO)) {
+        spdlog::error("SDL 初始化失败! SDL错误: {}", SDL_GetError());
+        return false;
+    }
+
+    window_ = SDL_CreateWindow("SunnyLand", 1280, 720, SDL_WINDOW_RESIZABLE);
+    if (window_ == nullptr) {
+        spdlog::error("无法创建窗口! SDL错误: {}", SDL_GetError());
+        return false;
+    }
+
+    sdl_renderer_ = SDL_CreateRenderer(window_, nullptr);
+    if (sdl_renderer_ == nullptr) {
+        spdlog::error("无法创建渲染器! SDL错误: {}", SDL_GetError());
+        return false;
+    }
+
+    is_running_ = true;
+    return true;
+}
+
+void GameApp::handleEvents() {
+    SDL_Event event;
+    while (SDL_PollEvent(&event)) {
+        if (event.type == SDL_EVENT_QUIT) {
+            is_running_ = false;
+        }
+    }
+}
+
+void GameApp::update(float /* delta_time */) {
+    // 游戏逻辑更新，暂时为空
+}
+
+void GameApp::render() {
+    // 渲染代码，暂时为空
+}
+
+void GameApp::close() {
+    spdlog::trace("关闭 GameApp ...");
+    if (sdl_renderer_ != nullptr) {
+        SDL_DestroyRenderer(sdl_renderer_);
+        sdl_renderer_ = nullptr;
+    }
+    if (window_ != nullptr) {
+        SDL_DestroyWindow(window_);
+        window_ = nullptr;
+    }
+    SDL_Quit();
+    is_running_ = false;
+}
+
+} // namespace engine::core

src/engine/core/game_app.h

@@ -0,0 +1,42 @@
+#pragma once
+
+// 前向声明, 减少头文件的依赖，增加编译速度
+struct SDL_Window;
+struct SDL_Renderer;
+
+namespace engine::core {
+
+/**
+ * @brief 主游戏应用程序类，初始化SDL，管理游戏循环。
+ */
+class GameApp final {
+private:
+    SDL_Window* window_ = nullptr;
+    SDL_Renderer* sdl_renderer_ = nullptr;
+    bool is_running_ = false;
+
+public:
+    GameApp();
+    ~GameApp();
+
+    /**
+     * @brief 运行游戏应用程序，其中会调用init()，然后进入主循环，离开循环后自动调用close()。
+     */
+    void run();
+
+    // 禁止拷贝和移动
+    GameApp(const GameApp&) = delete;
+    GameApp& operator=(const GameApp&) = delete;
+    GameApp(GameApp&&) = delete;
+    GameApp& operator=(GameApp&&) = delete;
+
+private:
+    [[nodiscard]] bool init();
+    void handleEvents();
+    void update(float delta_time);
+    void render();
+    void close();
+};
+
+} // namespace engine::core
+

src/main.cpp

@@ -0,0 +1,7 @@
+#include "engine/core/game_app.h"
+
+int main(int /* argc */, char* /* argv */[]) {
+    engine::core::GameApp app;
+    app.run();
+    return 0;
+}