A startup for it

src/main.cpp

@@ -1,67 +1,72 @@
-/*
-  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
-
-  This software is provided 'as-is', without any express or implied
-  warranty.  In no event will the authors be held liable for any damages
-  arising from the use of this software.
-
-  Permission is granted to anyone to use this software for any purpose,
-  including commercial applications, and to alter it and redistribute it
-  freely.
-*/
-#define SDL_MAIN_USE_CALLBACKS 1  /* use the callbacks instead of main() */
+#define SDL_MAIN_USE_CALLBACKS 1  // 启用回调函数模式
 #include <SDL3/SDL.h>
 #include <SDL3/SDL_main.h>
+#include "core/Game.h"
 
-static SDL_Window *window = NULL;
-static SDL_Renderer *renderer = NULL;
 
-/* This function runs once at startup. */
-SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
-{
-    /* Create the window */
-    if (!SDL_CreateWindowAndRenderer("Hello World", 800, 600, SDL_WINDOW_FULLSCREEN, &window, &renderer)) {
-        SDL_Log("Couldn't create window and renderer: %s", SDL_GetError());
+//使用SDL3的appstate进行隔离，避免全局变量
+struct AppState {
+    std::unique_ptr<Game> game;
+};
+
+
+
+static const int WIDTH = 1600;
+static const int HEIGHT = 900;
+
+
+// 1. 应用程序初始化回调
+SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[]) {
+    // 设置应用元数据[8](@ref)
+    SDL_SetAppMetadata("孢子棋", "1.0.0", "com.zhenyan121.sporechess");
+    
+    // 初始化SDL视频子系统[6,7](@ref)
+    if (!SDL_Init(SDL_INIT_VIDEO)) {
+        SDL_Log("SDL初始化失败: %s", SDL_GetError());
         return SDL_APP_FAILURE;
     }
+    // 创建游戏实例
+    auto state = new AppState();
+    state->game = std::make_unique<Game>(WIDTH, HEIGHT);
+    
+    
+    if (!state->game->initialize()) {
+        SDL_Log("游戏初始化失败!");
+        delete state;
+        return SDL_APP_FAILURE;
+    }
+    
+    
     return SDL_APP_CONTINUE;
 }
 
-/* This function runs when a new event (mouse input, keypresses, etc) occurs. */
-SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event)
-{
+// 2. 事件处理回调
+SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event) {
+    auto s = static_cast<AppState*>(appstate);
     if (event->type == SDL_EVENT_KEY_DOWN ||
         event->type == SDL_EVENT_QUIT) {
         return SDL_APP_SUCCESS;  /* end the program, reporting success to the OS. */
     }
+    
+    
     return SDL_APP_CONTINUE;
 }
 
-/* This function runs once per frame, and is the heart of the program. */
-SDL_AppResult SDL_AppIterate(void *appstate)
-{
-    const char *message = "Hello World!";
-    int w = 0, h = 0;
-    float x, y;
-    const float scale = 4.0f;
-
-    /* Center the message and scale it up */
-    SDL_GetRenderOutputSize(renderer, &w, &h);
-    SDL_SetRenderScale(renderer, scale, scale);
-    x = ((w / scale) - SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE * SDL_strlen(message)) / 2;
-    y = ((h / scale) - SDL_DEBUG_TEXT_FONT_CHARACTER_SIZE) / 2;
-
-    /* Draw the message */
-    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
-    SDL_RenderClear(renderer);
-    SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
-    SDL_RenderDebugText(renderer, x, y, message);
-    SDL_RenderPresent(renderer);
-
+// 3. 主循环迭代回调（每帧调用）
+SDL_AppResult SDL_AppIterate(void *appstate) {
+    auto s = static_cast<AppState*>(appstate);
+    if (s->game) {   //防止空指针
+    // 更新游戏逻辑
+    
+    
+    // 渲染帧
+    s->game->render();
+    }
     return SDL_APP_CONTINUE;
 }
 
-/* This function runs once at shutdown. */
-void SDL_AppQuit(void *appstate, SDL_AppResult result)
-{
+// 4. 应用退出回调（清理资源）
+void SDL_AppQuit(void *appstate, SDL_AppResult result) {
+    delete static_cast<AppState*>(appstate);
+    SDL_Quit();
 }