两边的图标分别可随便拖动，但左右不可以互换，因为设置了拖放限制，需要type一样才能相互拖动。



我也没写过大型的MMORPG游戏，不知道正真需要怎么样的组件，玩玩，随便先做个简单的。



该组件属于轻量级组件，基本能满足一般游戏的需要。-Both sides of the icon could easily drag, but about not interchangeable, set the drag and drop constraints, the need to type the same to each other drag. I have not written a large-scale MMORPG game, do not know what really needs what kind of components, play, whatever the first to be simple. The components are lightweight components to meet the basic needs of the general game.