External scripts
WE HAVE A GENERAL SCRIPT (CONTAINS OUR FUNCTIONS)
1- OL1AScript.cs
WE HAVE OUR MAIN SCRIPT (2):
2- main.cs
....
WE WANT TO ACCESS to (1) FROM OUR SCRIPT (2):
BOTH SCRIPTS MUST BE ASSIGNED TO A "GAMEOBJECT" (create it on Unity, "Create Empty")
ol1script = GetComponent<OL1AScript >();