Collision Problem

Scripting Issues
1

i am having a problem with collision. I have a square that the user drags through an avatar. When they collide there is no event and showCollisions has no effect.

this is the code to attach the collision box:

 collisionPoly = CollisionPolygon(Point3(x,y,z),
                                         Point3(dx, y,z),
                                         Point3(dx,dy,z),
                                         Point3(x,dy,z)) 
        self.dragBoxCollider = self.dragBoxPath.attachNewNode(CollisionNode('dragbox'))
        self.dragBoxCollider.node().addSolid(collisionPoly)
        self.dragBoxCollider.show()
        self.dragBoxPath.setColor(0,.5,0,.75)
        self.dragBoxPath.setRenderMode(RenderModeAttrib.MWireframe, 2)

code for adding the collision sphere to the avatar:


 #load thest models
    model=loader.loadModel('manta/manta')
    
    #put them in the world
    model.reparentTo(render)
    model.setPos( 100, 150, 100)
#    model.setHpr(140,0,0)
    model.setScale(20)
    cs = CollisionSphere(0, 0, 0, 20)
    cnodePath = model.attachNewNode(CollisionNode('cnode'))
    cnodePath.node().addSolid(cs)
    
    cnodePath.show()

also on a side note with verbose on, when i click in the window and hold the application will crash with:

Assertion failed: imax >= 0 at line 335 of panda/src/linmath/lmatrix4_src.cxx
Traceback (most recent call last):
  File "/opt/eclipse/plugins/org.python.pydev.debug_1.0.6/pysrc/pydevd.py", line 729, in ?
    debugger.run(setup['file'], None, None)
  File "/opt/eclipse/plugins/org.python.pydev.debug_1.0.6/pysrc/pydevd.py", line 614, in run
    execfile(file, globals, locals) #execute the script
  File "/home/kelly/workspace/panda/src/MapNode.py", line 153, in ?
    run( )
  File "debtmp/usr/share/panda3d/direct/src/showbase/ShowBase.py", line 1956, in run
  File "debtmp/usr/share/panda3d/direct/src/task/Task.py", line 821, in run
  File "debtmp/usr/share/panda3d/direct/src/task/Task.py", line 769, in step
  File "debtmp/usr/share/panda3d/direct/src/task/Task.py", line 703, in __stepThroughList
  File "debtmp/usr/share/panda3d/direct/src/task/Task.py", line 633, in __executeTask
  File "debtmp/usr/share/panda3d/direct/src/showbase/ShowBase.py", line 1286, in igLoop
AssertionError: imax >= 0 at line 335 of panda/src/linmath/lmatrix4_src.cxx

thanks

2

sorry next time I will finish the pertinant section in the manual before posting a question.

ok everbody at once, “RTFM!”