Full restart a tree

[Alex Jr]

Hello :3, i hope someone can help me with my problem, is there a way to full restart a tree?
I have some external behaviors and and i want to remove them when i restart the tree (so the bt create again the nodes because i change the external tree by code) but the Reset dosent work for this

 

[Justin]

External trees are loaded at runtime and they are persisted when the tree restarts. In order to get around this you will need to save you current tree to an external tree and then assign the External Tree reference to the Behavior Tree component. In order to have it reload the tree you can swap out the external tree to null and then back to the original value again. This will allow the Get External Behavior task to retrieve the results again. Here are some similar posts:

R

Post in thread 'Dynamic instantiation and assignment of External Behavior Trees'

Nov 14, 2023

You definitely can reload a BTReference at runtime, but it only loads if the previous external BT is different.

That's why I null out my external tree before reloading my custom BTRef where it pulls the current job external tree at runtime. Even with that it throws an error but that doesn't seem to break anything. I noted this in post #6 above.
Also note that you restart the BT in code when your agent's job changes.

I'm trying to get a proper solution to that problem in this thread...

• red_halo

• 

As a side note I know that this is convoluted and in the DOTS version of Behavior Designer you will be able to just call a single method to reevaluate the external trees (now called subtrees).