pause/resume scene (intervals-tasks-actors-sounds-movies)

UPDATE :
removed unknown purpose task named ‘shadowCollisionLoop’

UPDATE :
better implementation for tasks

EDIT :
fixed minor bug which should never happen on normal use

really intresting, panda3d should have some mechanism like this to automatically do pause/resume,
it has nodes/names for everything, it shouldn’t be that hard to do.

Maybe make it multiply infinity by infinity to freeze everything and then stop the operation. :laughing:

inf * inf is a clearly defined floating-point operation:

>>> inf = float("inf")
>>> print inf * inf
inf