Sorry, dumb newbie question. Tired and late too - so not too bright right now.
I wanted to put shadows in. But I can't find the ShadowHelper class. Is it included in the Android library? What's the import path? Or is there another recommended way to do shadows on an Android device?
No, it's not included, because OpenGL ES 1.0 and 1.1 don't support the required features. OpenGL ES 2.0 does, but it's currently not supported by jPCT-AE nor by all Android versions/chipsets. I suggest to use simple blob shadows instead, i.e. an alpha blended spot below a character...just like Quake3 did it by default.
Example of a blob shadow:
(http://www.jpct.net/img/alien_runner_7.png)