关于Cast To节点在Blueprint中能够做什么的问题。下面是官方文档中的说明。
其中的一句话：
By using the Get Player Charactor node, then using a Cast To MyCharactor node(the special Charactor Blueprint), you can say if the Player Charactor is MyCharactor, let me access the Variables, Functions, Events or any other special functionality contained within that Blueprint.