Changeset 646 for code/branches/FICN/src/orxonox/objects/Explosion.cc

• added very bad collision detection (presentation hack )
• added explosions
• fixed bug in ParticleInterface (it tried to delete SceneManager)

AND:

• fixed one of the most amazing bugs ever! (the game crashed when I deleted an object through a timer-function. because the timer-functions is called by an iterator, the iterator indirectly delted its object. by overloading the (it++) operator, i was able to solve this problem)