Function constructor

packages/core/src/ECS/Systems/EntitySystem.ts:219–250

(matcher?: Matcher)

    }

    constructor(matcher?: Matcher) {
        this._updateOrder = 0;
        this._addOrder = 0;
        this._enabled = true;
        this._performanceMonitor = null;
        this._systemName = getSystemInstanceTypeName(this);
        this._initialized = false;
        this._matcher = matcher || Matcher.empty();
        this._eventListeners = [];
        this._scene = null;
        this._destroyed = false;

        this._entityIdMap = null;
        this._entityIdMapVersion = -1;

        // 初始化logger
        this.logger = createLogger(this.getLoggerName());

        this._entityCache = new EntityCache();

        // 初始化调度元数据（优先使用装饰器元数据）
        // Initialize scheduling metadata (prefer decorator metadata)
        const decoratorMeta = getSchedulingMetadata(this);
        this._schedulingMetadata = decoratorMeta
            ? { ...decoratorMeta }
            : {
                  stage: 'update',
                  before: [],
                  after: [],
                  sets: []
              };
    }

    /**
     * 这个系统所属的场景