Created Draw_enging class and copied everything relevant from Ant_Sim.cpp. This is safety copy before deleting the stuff from Ant_Sim.cpp
Refactoring of Ant_Sim more or less finished. All graphic stuff now in Drawing_engine. Everything works as before but the code is more beautiful :)
Merge branch 'master' of github.com:Andarin/Ant_Simulation
Added result at the end.