错误 area_set_shape_disabled: Can't change this state while flushi

在Godot中, 直接调用方法去 修改secne_tree (添加、删除子节点), 处理图形碰撞等都会造成线程不安全,以至报错:area_set_shape_disabled: Can't change this state while flushing queries. Use call_deferred() or set_deferred() to change monitoring state instead.
简单的处理办法就是使用 call_deferred() 调用想要执行的内容。如: