虚幻引擎4强制转换为父类失败

Question

I want to Cast a Child to his Base Class.

I have a Class called Road_Empty and a child Class Road_Left.

Iam using this flow to spawn a Random Road Tile.

Flow

This should run smoothly. But the Cast fails evertime.

What is wrong there?

Answer 1

Though you've found that the reason is Classes are filled with wrong types, I'd like to provide some more information:

1. You don't have to cast child classes objects to parent class object, since they can be used directly as parent class object.

2. If your spawning failed so it returns None , the cast can also failed. The most common failure is because of collision handling, but in your case of Always Spawn, Ignore Collisions then it can hardly fails.