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Cast is a check to see if an object is of a certain type. When you have a reference (Pin line) to an Actor, you can try casting it to the Player’s Character class to see if it is the player. I’ve hyperlinked some important terms above that would be helpful in research.
yup i agree anim bp does not inherit from the actor class so it will always fail. below is an example of how you could access a anim bp by getting an actor reference. its a pretty simple example it basically says ok i overlapped something is it a character? yes ok then get its mesh and anim instance. is its anim instnace the thirdperson_animbp or a child of that class? yes ok print the display name. this can also be done with the anim class as well.