How does agent.SetDestination work?

Question

Unity

Immediately I thought that agent.SetDestination should be in update, it turned out that it was enough for him to set a target and launch it at the start, and he would fly to the target ...
And how can he be stopped if necessary?
How to calculate that it intersected with another object, for example, this object also has the same agent.SetDestination movement, but if it collided with it, then the first object changes its target and flies after it?

Answer 1

agent.Stop() or agent.SetDestination(agent.transform.position) to stop the agent.
Well, this requires the usual OnTriggerEnter or OnCollisionEnter. Next, we determine whether it is an agent or not through GetComponent and change the target.