[farshizzo]

Hi,

The viz.pick() command returns a Vizard node object. However, you are populating your bodies list with your own Ball objects, which are not node objects. You can iterate through the list and check if the node is equal to the ball attribute of the Ball class. Or you can have your Ball class inherit from the Vizard node object. If you wanted to inherit from a Vizard node your Ball class would look like this:

class Ball(viz.VizNode):
	def __init__(self, alpha):
		
		self.BALL_ALPHA = alpha
		#Add the geometric representation of the ball
		self.ball = viz.add('ball.wrl')
		#Make ball twice as big
		self.ball.scale(2,2,2)
		#The balls collision will be represented by a sphere
		self.ball.collideSphere()
		#Set the alpha value of the ball
		self.ball.alpha(self.BALL_ALPHA)
		
		#Need to initialize base class
		viz.VizNode.__init__(self,self.ball.id)