There's some sports that one would have to give up if they were really passionate about bodybuilding, especially at a competitive level. I gave up track (definite no no) and soccer. Just too much running involved. I have a hard enough time keeping/gaining, so I made my choice. Now, don't get me wrong, I'll go out every once in awhile with some friends and play some pick up, but I know that it's only for a quick "cardio" sesh.
If you still want to play vball, it's not that bad. IW is right, a lot of explosive movements. Just take into consideration the general amount of calories you would average burn and make sure you work them into your program!

Keep active, have fun, and do what you love dude, at the end of the day, that's all that matters.