I've seen screenshots from http://www.jmonkeyengine.com/index.php?option=com_content&task=view&id=68&Itemid=84
I don't know how to create obstacles like pool, marsh…
Anybody can help me some idea!
To create a pool you can just use water renderer,in jme test there is an example. I guess for a marsh you can tweak the variables for the water.
actually, I need to localize for a pool! Somewhere is pool, somewhere is marsh! These are obstacles!