Method removeSystemFromIndex

packages/core/src/ECS/Scene.ts:760–766

* 从组件索引中移除系统 * * Remove a system from all component indices. * * @param system 要移除的系统 | The system to remove

(system: EntitySystem)

     * @param system 要移除的系统 | The system to remove
     */
    private removeSystemFromIndex(system: EntitySystem): void {
        this._globalNotifySystems.delete(system);

        for (const systems of this._componentIdToSystems.values()) {
            systems.delete(system);
        }
    }

    /**
     * 在场景的实体列表中添加一个实体