feat: add app init with auto scene discovery

src/init.ts

@@ -0,0 +1,99 @@
+import Game from "./core/Game";
+import SceneManager from "./scene/SceneManager";
+import { BaseScene } from "./scene/BaseScene";
+import { SceneType } from "./enums/SceneType";
+import { assetManager } from "./core/AssetManager";
+import { logger } from "./core/Logger";
+import eventBus from "./core/EventBus";
+
+const game = Game.getInstance();
+const sceneManager = SceneManager.getInstance();
+
+export async function initApp(): Promise<void> {
+  await assetManager.init();
+  await game.init();
+
+  // 自动导入所有场景文件 src/scenes/**/page_*.ts
+  const sceneModules = import.meta.glob("./scenes/**/page_*.ts", { eager: true });
+
+  for (const path in sceneModules) {
+    const mod = sceneModules[path];
+    // 文件名匹配提取场景名称
+    const match = path.match(/page_(.*?)\.ts$/);
+    if (!match) continue;
+    const sceneName = match[1];
+
+    const sceneClass = (mod as { default: Constructor<BaseScene> }).default;
+    const scene = new sceneClass();
+
+    // 如果模块默认导出不是场景构造函数，尝试其他格式（兼容旧定义）
+    if (!scene || typeof scene !== "object" || !("stage" in scene)) {
+      logger.warn(`initApp: invalid scene file ${path}, skipping`);
+      continue;
+    }
+
+    sceneManager.registerScene(scene);
+  }
+
+  // 启动更新循环
+  game.ticker.add((ticker) => {
+    const dt = ticker.deltaTime;
+    const current = sceneManager.currentScene;
+
+    // 更新常驻场景
+    sceneManager["scenes"].forEach((scene) => {
+      if (scene.type === SceneType.Resident && scene.stage.visible) {
+        scene.update?.(dt, ticker);
+      }
+    });
+
+    // 更新当前场景
+    if (current) {
+      current.update?.(dt, ticker);
+    }
+
+    game.render();
+
+    // lateUpdate
+    sceneManager["scenes"].forEach((scene) => {
+      if (scene.type === SceneType.Resident && scene.stage.visible && scene.lateUpdate) {
+        scene.lateUpdate(dt, ticker);
+      }
+    });
+
+    if (current?.lateUpdate) {
+      current.lateUpdate(dt, ticker);
+    }
+  });
+
+  // 处理常驻场景初始化
+  const residentScenes: BaseScene[] = [];
+  sceneManager["scenes"].forEach((scene) => {
+    if (scene.type === SceneType.Resident) {
+      residentScenes.push(scene);
+    }
+  });
+
+  (async () => {
+    for (const scene of residentScenes) {
+      if (!scene._assetsLoaded) {
+        await scene.loadBundle?.();
+        scene._assetsLoaded = true;
+      }
+      if (!scene._layoutDone) {
+        await scene.layout?.();
+        scene._layoutDone = true;
+      }
+      await scene.onLoad?.();
+    }
+  })();
+
+  // 场景变化监听 - 日志
+  sceneManager.onStageChange((current) => {
+    logger.debug("Scene changed to", current.name);
+  });
+
+  logger.info("App initialized");
+}
+
+export { game, sceneManager, eventBus, assetManager, logger };