Send Message?

SendMessage invokes a function on every script on the game object you call it on. For example, if you say:

 gameObject.SendMessage("Foo");

And, in another (or the same) script, on the same gameobject, you have:

 function Foo () {
     print("Hello");
 }

Then your call to SendMessage will run the function Foo.

The downside of this is that if you have multiple instances of the same script, it will run the same for all of them, because that's what SendMessage does. It's great for, say, when you have six guns, all with their own script on the same object, and you want to call Fire() at the same time on all of them. But it's not great if you want to fire just one gun. That's this method comes in:

 // Your script where you want to call the function
 var otherScript : NewScript;
 
 function Start () {
     otherScript = gameObject.GetComponent(NewScript); // Use GetComponent to find the script.
     //If you delete the above line you can drag a NewScript to this script's otherScript variable in the Inspector window, which is useful
     
     otherScript.Foo(); // This runs Foo() on the otherScript
 }
 
 // NewScript.js
 function Foo () {
      print("Hello");
 }

(Note: Untested code, NewScript might be a reserved name, but you get the idea) Hope this helps.