Using a script to alter part of another script

Scripting
1

I am wanting my car to behave differently on the terrain to what it does on the car model. I have a script below which disables a script but i am unsure how to modify it. I am wanting the ‘Top Speed’ to Change in my ‘Car’ script on collision with ‘terrain’. Any ideas please?

var shouldBeEnabledOnStart = false;
function Start () {
    var scripts = gameObject.GetComponentsInChildren (Car, true);
   if (!shouldBeEnabledOnStart) {   
         for (var tmp : Car in scripts) {
             tmp.enabled = false;
         }
   }
   
   else {
      for (var tmp : Car in scripts) {
          tmp.enabled = true;
      }   
   
   }

}


function OnTriggerEnter (terrain : Collider) {
   
   if (terrain.gameObject.tag == "car") {
      var scripts = gameObject.GetComponentsInChildren (Car, true);
      for (var tmp : Car in scripts) {
          tmp.enabled = true;
      }
   }
}

function OnTriggerExit (terrain : Collider) {
   if (terrain.gameObject.tag == "car") {
   var scripts = gameObject.GetComponentsInChildren (Car, true);
      for (var tmp : Car in scripts) {
          tmp.enabled = false;
      }
   }
}
2

Anyone?

3

You can use SendMessage :

// Calls the function ApplyDamage with a value of 5
gameObject.SendMessage (“ApplyDamage”, 5);

// Every script attached to the game object
// that has an ApplyDamage function will be called.
function ApplyDamage (damage) {
print (damage);
}

4

I am not wanting to apply damage, i am wanting to modify another part of a script, in a similar way to adding time to a timer

var car : Car;

function OnTriggerEnter(terrain : Collider) { 	
	Car.topSpeed = 50;
}
5

the error i get from the above code is:
an instance of type 'Car" is required to access not static member ‘topSpeed’

6

I can’t work out what you’re trying to do here?

access a variable in another script?

Hint. Don’t disable gameobjects if you’re using FindObject/GetComponent, etc. It can’t find them, so better to keep a reference to them, if you plan to do that.

7

Im using the car script from the car tutorial and one of the variables you can set is ‘top speed’. i am wanting the cars top speed to change when it enters a trigger. ie make it act differently on different surfaces. The top speed variable is located within the script called car. if that makes sense?

8

First thing you do in Start() is disable all the Car scripts from what I can tell.

Is this script a controller script that controls multiple cars?

If you do find the Car component script (call it something else so it doesn’t confict with a class name, like carScript)
It should just then be
carScript.maxSpeed = 50;

Debug.Log() is worth using to find out what is going on.

That car tutorial is quite complex, and tough to tweak. This tutorial was lot easier to play around with.
http://www.gotow.net/andrew/blog/?page_id=78

9

solved!

var car : Car;

function OnTriggerEnter(terrain : Collider) { 	
	car.topSpeed = 1;
	car.maximumTurn = 10;
	car.minimumTurn = 5;
}

function OnTriggerExit(terrain: Collider) {
	car.topSpeed = 400;
	car.maximumTurn = 18;
	car.minimumTurn = 12;
}

works to change top speed and handling in the sense of car turning