help with :collide(error):

[darthpikachu2]

Hi,
I’ve been trying to get collision detection working and unfortunately i’ve been getting this error during runtime:

:collide(error): Invalid attempt to detect collision from CollisionTube!

This means that a CollisionTube object was added to a
CollisionTraverser as if it were a colliding object. However,
no implementation for this kind of object has yet been defined
to collide with other objects.

It happens with all collsion solids and I have no idea why. The code is almost a word for word copy of the examples from the manual and traverser has been set to base.cTrav

The basic code is

self.cTraverser = CollisionTraverser('default')
base.cTrav = self.cTraverser
... loads the model...
collisionTube = CollisionTube(x1,y1,z1,x2,y2,z2,r)
cNodePath = player.attachNewNode(CollisionNode('player'))
cNodePath.node().addSolid(collisionTube)
cNodePath.show()

traverser.addCollider(cNodePath.node(), handler)
self.accept(.....)

ps. handler is a CollisionHandlerEvent with patterns setup… and the collision tube does show up on the display. the error doesn’t crash the program either.

Can anyone help? cheers

[drwr]

From the manual page entitled Collision Solids:

The tube is good as an “into object”, for objects that are largely cylindrical. It is not a very good choice for a “from object”, because not many intersection tests have been written from tubes into other shapes.

You are attempting to use a CollisionTube as a “from” object. This is not defined. Use a CollisionSphere instead, and reserve CollisionTubes for the “into” objects in your scene.

David