虚幻引擎启动流程
flowchart TB
    id1([Start Engine Editor])
    id2[UEditor Engine Init]
    id3[UEngine Start]
    id4([Uses presses Play button In Editor])
    id5[Create UGame Instance]
    id6([Start Engine Standalone])
    subgraph 从虚幻引擎编辑器启动
    id1-->id2-->id3-->id4-->id5
    end
    subgraph two
    id6-->id2-->id5
    end