Hello! I have been investigating the use of State Trees to control AI in my project, but I am looking for a way to set an actors state tree from a variable when it spawns. After having a look, I’m not too sure how to go about this or if it’s currently possible.
I would have a number of different state trees I can assign for an actor and would really prefer not to have to make a new child of my actor for every different state that could be used in it. Does anyone know of a way to set a state tree from a variable at spawn?
In case anyone else has this issue I found a way to do it by changing the state tree component when spawning an actor.
I created an Enum to define the different state tree options, and added it as a variable to the BP that’ll be spawned. Then I set the Enum variable in the BP to be exposed on spawn.
The actor BP that gets spawned in needs to have a state tree component, but the values can be left as none.
From the Begin Play node in the actor BP, I added a switch node on the Enum I created. Then from each pin I used the “Add state tree component” node to set the state tree for that case. Selecting the node allows you to define the state tree the component should use.
