#1 Safety net needed

[puzzler995]

We need a safety net so that if the user clicks outside the terrain the game wont crash.

[puzzler995]

Traceback (most recent call last):
File "la_vida.py", line 18, in <module>
soya.MainLoop( scene ).main_loop()
File "main_loop.pyx", line 171, in _soya.MainLoop.main_loop
File "main_loop.pyx", line 251, in _soya.MainLoop.begin_round
File "/home/eric/la-vida/branches/mike_hibbert/soya_test/GameApp/game_app_3d.py", line 187, in begin_round
self.ProcessEvents()
File "/home/eric/la-vida/branches/mike_hibbert/soya_test/GameApp/game_app_3d.py", line 221, in ProcessEvents
self.PrepareActionEvent( event )
File "/home/eric/la-vida/branches/mike_hibbert/soya_test/GameApp/game_app_3d.py", line 241, in PrepareActionEvent
impact, normal = result
TypeError: 'NoneType' object is not iterable