FIX: add the Leafs outside the main loop
FIX: add the Leafs outside the main loop

Leafs should be added outside the main loop, being added only one
time. They were respawning each event loop.

Rodolfoarv/Mars-Explorer-AI-with-Python-,Rodolfoarv/Mars-Explorer-AI-with-Python-,Rodolfoarv/Mars-Explorer-AI-with-Python-,Rodolfoarv/Mars-Explorer-AI-with-Python-,Rodolfoarv/Mars-Explorer-AI-with-Python-,Rodolfoarv/Mars-Explorer-AI-with-Python-