成员的完整列表，这些成员属于 eve::level_editing::LevelObject,包括所有继承而来的类成员

extensions	eve::level_editing::LevelObject
height	eve::level_editing::LevelObject
id	eve::level_editing::LevelObject
name	eve::level_editing::LevelObject
properties	eve::level_editing::LevelObject
rotation	eve::level_editing::LevelObject
type	eve::level_editing::LevelObject
visible	eve::level_editing::LevelObject
width	eve::level_editing::LevelObject
x	eve::level_editing::LevelObject
y	eve::level_editing::LevelObject