Function updateEntityTracking

packages/core/src/ECS/Systems/EntitySystem.ts:1082–1106

* 更新实体跟踪，检查新增和移除的实体 * * 由于采用了事件驱动设计，运行时的 onAdded/onRemoved 已在 handleEntityComponentChanged 中 * 立即触发。此方法不再触发回调，只同步跟踪状态。 * * With event-driven design, runtime onAdded/onRemoved are triggered immediately in * handleEntityComponentChanged. This method no longer triggers cal

(currentEntities: readonly Entity[])

     * handleEntityComponentChanged. This method no longer triggers callbacks, only syncs tracking state.
     */
    private updateEntityTracking(currentEntities: readonly Entity[]): void {
        const currentSet = new Set(currentEntities);
        let hasChanged = false;

        // 检查新增的实体 | Check for newly added entities
        for (const entity of currentEntities) {
            if (!this._entityCache.isTracked(entity)) {
                this._entityCache.addTracked(entity);
                hasChanged = true;
            }
        }

        // 检查移除的实体 | Check for removed entities
        for (const entity of this._entityCache.getTracked()) {
            if (!currentSet.has(entity)) {
                this._entityCache.removeTracked(entity);
                hasChanged = true;
            }
        }

        // 如果实体发生了变化，使缓存失效 | If entities changed, invalidate cache
        if (hasChanged) {
            this._entityCache.invalidate();
        }
    }

    /**
     * 当实体被添加到系统时调用