feat: 添加生命值系统

- 新增 StorageManager 本地存储管理器，管理用户生命值
- 新用户默认 10 点生命值，存储在 localStorage
- 查看提示消耗 1 点生命值
- 通关奖励 1 点生命值
- PageLevel 集成生命值显示和消耗逻辑

assets/scripts/utils/StorageManager.ts

@@ -0,0 +1,87 @@
+import { sys } from 'cc';
+
+/**
+ * 本地存储管理器
+ * 统一管理用户数据的本地持久化存储
+ */
+export class StorageManager {
+    /** 生命值存储键 */
+    private static readonly KEY_LIVES = 'game_lives';
+
+    /** 默认生命值 */
+    private static readonly DEFAULT_LIVES = 10;
+
+    /** 最小生命值 */
+    private static readonly MIN_LIVES = 0;
+
+    // ==================== 生命值管理 ====================
+
+    /**
+     * 获取当前生命值
+     * @returns 当前生命值，新用户返回默认值 10
+     */
+    static getLives(): number {
+        const stored = sys.localStorage.getItem(StorageManager.KEY_LIVES);
+        if (stored === null || stored === '') {
+            // 新用户，设置默认值
+            StorageManager.setLives(StorageManager.DEFAULT_LIVES);
+            return StorageManager.DEFAULT_LIVES;
+        }
+        const lives = parseInt(stored, 10);
+        // 防止异常数据
+        if (isNaN(lives) || lives < 0) {
+            StorageManager.setLives(StorageManager.DEFAULT_LIVES);
+            return StorageManager.DEFAULT_LIVES;
+        }
+        return lives;
+    }
+
+    /**
+     * 设置生命值
+     * @param lives 生命值
+     */
+    static setLives(lives: number): void {
+        const validLives = Math.max(StorageManager.MIN_LIVES, lives);
+        sys.localStorage.setItem(StorageManager.KEY_LIVES, validLives.toString());
+        console.log(`[StorageManager] 生命值已更新: ${validLives}`);
+    }
+
+    /**
+     * 消耗一颗生命
+     * @returns 是否消耗成功（生命值不足时返回 false）
+     */
+    static consumeLife(): boolean {
+        const currentLives = StorageManager.getLives();
+        if (currentLives <= 0) {
+            console.warn('[StorageManager] 生命值不足，无法消耗');
+            return false;
+        }
+        StorageManager.setLives(currentLives - 1);
+        return true;
+    }
+
+    /**
+     * 增加一颗生命
+     */
+    static addLife(): void {
+        const currentLives = StorageManager.getLives();
+        StorageManager.setLives(currentLives + 1);
+        console.log(`[StorageManager] 获得一颗生命，当前生命值: ${currentLives + 1}`);
+    }
+
+    /**
+     * 检查是否有足够的生命值
+     * @returns 是否有生命值
+     */
+    static hasLives(): boolean {
+        return StorageManager.getLives() > 0;
+    }
+
+    /**
+     * 重置生命值为默认值
+     */
+    static resetLives(): void {
+        StorageManager.setLives(StorageManager.DEFAULT_LIVES);
+        console.log('[StorageManager] 生命值已重置为默认值');
+    }
+}

assets/scripts/utils/StorageManager.ts.meta

@@ -0,0 +1,9 @@
+{
+  "ver": "4.0.24",
+  "importer": "typescript",
+  "imported": true,
+  "uuid": "3a09bd59-6481-4e26-8b61-c6e4b0003e59",
+  "files": [],
+  "subMetas": {},
+  "userData": {}
+}