I see, hmm yea that's a tough one. To impose a constraint like that ("do not approach branch from below a certain angle") is a complex problem that involves more math than the Find Target operator is designed to process. That kind of problem comes with all kinds of weird corner cases...like, if the bird is flying up to the branch from below it, how should it go around to the top? What if the branch turns or rotates when the bird is close? Should it adjust course? At what distance away from the branch should the bird be allowed to land on the top of it? A realistic solution would involve complex steering behaviors and more situational awareness for the particle than the Find Target operator can currently provide.
If the effect is achievable in PFlow like you mention, perhaps you can show a basic playblast of it in action? Just to get an idea of the type of result you'd get...
If the effect is achievable in PFlow like you mention, perhaps you can show a basic playblast of it in action? Just to get an idea of the type of result you'd get...