Method getFromCache

packages/core/src/ECS/Core/QuerySystem.ts:657–669

* 从缓存获取查询结果

(cacheKey: string)

     * 从缓存获取查询结果
     */
    private getFromCache(cacheKey: string): readonly Entity[] | null {
        const entry = this._queryCache.get(cacheKey);
        if (!entry) return null;

        // 检查缓存是否过期或版本过期
        if (Date.now() - entry.timestamp > this._cacheTimeout || entry.version !== this._version) {
            this._queryCache.delete(cacheKey);
            return null;
        }

        entry.hitCount++;
        return entry.entities;
    }

    /**
     * 添加查询结果到缓存