AI becomes hostile on hit

Making a tank game, I want the ai to be passive until one of the tank projectiles hits them, then the begin running towards the player. Any idea how I could do that (note: tank already fires projectiles I just need to know how to make the ai follow the player once its been hit)

I’d suggest using Behavior Trees.You can use Move To task to move towards the player.
If not, you can use Simple Move To Actor to chase the player.

This shows you how to use Move To task.

This shows you how to use Simple Move To Actor.