[Pyode-user] bug in tutorial 3

[Dodo D. <dod...@go...>]

hey
i was running the tutorial 3 with python2.5.2 and noticed that there is a
bug in the create_box function ... my little repair-hack is:
*
geom_cache = [] #hack*

def create_box(world, space, density, lx, ly, lz):
    """Create a box body and its corresponding geom."""

    # Create body
    body = ode.Body(world)
    M = ode.Mass()
    M.setBox(density, lx, ly, lz)
    body.setMass(M)

    # Set parameters for drawing the body
    body.shape = "box"


    body.boxsize = (lx, ly, lz)

    # Create a box geom for collision detection
    geom = ode.GeomBox(space, lengths=body.boxsize)
    geom.setBody(body)
    *geom_cache.append(geom) #hack*


    return body

the problem is that the garbage collector frees the geom-objects after left
from the function, which are neccessary for collision-detection.

sincerely
dodo