import direct.directbase.DirectStart
from direct.task import Task
from direct.actor import Actor
from pandac.PandaModules import PortalNode
from pandac.PandaModules import CollisionTraverser,CollisionNode
from pandac.PandaModules import CollisionHandlerQueue,CollisionRay
from pandac.PandaModules import Point3,Vec3,Vec4,BitMask32

env = loader.loadModel("models/environment")
env.reparentTo(render)
env.setScale(0.25,0.25,0.25)
env.setPos(-8,42,0)
env.node().setIntoCollideMask(BitMask32.bit(1))

p anda = loader.loadModel("models/box")
panda.setScale(2,2,2)
panda.reparentTo(render)
panda.node().setIntoCollideMask(BitMask32.bit(1))
picker = CollisionTraverser()            #Make a traverser
pq     = CollisionHandlerQueue()         #Make a handler
     #Make a collision node for our picker ray
pickerNode = CollisionNode('mouseRay')
  #Attach that node to the camera since the ray will need to be positioned
#relative to it
pickerNP = base.camera.attachNewNode(pickerNode)
#Everything to be picked will use bit 1. This way if we were doing other
#collision we could seperate it
pickerNode.setFromCollideMask(BitMask32.bit(1))
pickerNode.setIntoCollideMask(BitMask32.allOff())
pickerRay = CollisionRay()               #Make our ray
pickerNode.addSolid(pickerRay)      #Add it to the collision node
#Register the ray as something that can cause collisions
picker.addCollider(pickerNP, pq)
def mouseTask( task):
  if base.mouseWatcherNode.hasMouse():
   mpos = base.mouseWatcherNode.getMouse()
   pickerRay.setFromLens(base.camNode, mpos.getX(), mpos.getY())   
   picker.traverse(env)
   print pq.getNumEntries()
   for i in xrange(pq.getNumEntries()):
    pos=pq.getEntry(i).getSurfacePoint(render)
    panda.setPos(pos)
  return Task.cont
mouseTask = taskMgr.add(mouseTask, 'mouseTask')
run()

nodes=env.findAllMatches('**/+GeomNode')
for n in nodes.asList():
     n.node().setIntoCollideMask(BitMask32.bit(1))

           gnodes=self.terrain.getRoot().findAllMatches("+GeomNode")
           for gnode in gnodes:
               gnode.node().setIntoCollideMask(BitMask32.bit(1))