Calling functions in Javascript

Question

Here I have a script that creates two movement states for a game object - rotating or traveling in a straight line. However I want to create two functions in my script to call upon in the Update function, but I don't know how to do it. Here's what I've got:

 var pip : Transform;
 var gel : Transform;
 var nearPip = false; 
 var speed : float = -20;
 
 function Update () 
 {
     if(Input.GetButton("Fire1"))
     {
         if(nearPip == true)
         {
             var pivot = pip.position;
             gel.transform.RotateAround (pivot, Vector3.forward, 50 * Time.deltaTime);
         }
         else if (nearPip == false)
         {
             transform.Translate(Vector3(0,speed,0) * Time.deltaTime);
         }
     }
 }

But I'd much prefer to have it like this:

 if(nearPip == true){
 //insert Rotator function
 }
 
 else if(nearPip == false){
 //insert Movement function
 }
 
 
 //and then under the Update function...
 
 function Rotator(){
 var pivot = pip.position;
             gel.transform.RotateAround (pivot, Vector3.forward, 50 * Time.deltaTime);
 }
 
 function Movement(){
 transform.Translate(Vector3(0,speed,0) * Time.deltaTime);
 }

Any help on how to call these functions correctly would be great, thank you peeps!

Answer 1

You are so incredibly close.

To call a function, simply call it by name as you do with a command

 function PickMe()
 {
     // do stuff
 }

call the function with :

 PickMe();

note the parenthesis and the semicolon ();

So for your example script it would be :

 var pip : Transform;
 var gel : Transform;
 var nearPip = false;
 var speed : float = -20;
  
 function Update ()
 {
     if (Input.GetButton("Fire1"))
     {
         if ( nearPip == true )
         {
             //insert Rotator function
             Rotator();
         }
         else if ( nearPip == false )
         {
             //insert Movement function
             Movement();
         }
     }
 }
  
 function Rotator()
 {
     var pivot = pip.position;
     gel.transform.RotateAround (pivot, Vector3.forward, 50 * Time.deltaTime);
 }
  
 function Movement()
 {
     transform.Translate(Vector3(0,speed,0) * Time.deltaTime);
 }

Something else : it is worthy to note that :

 if ( nearPip == true )

is the same as writing :

 if ( nearPip )

and for not true :

 if ( nearPip == false )

is the same as writing :

 if ( !nearPip )

note the exclamation mark.

         if ( nearPip )
         {
             //insert Rotator function
             Rotator();
         }
         else if ( !nearPip )
         {
             //insert Movement function
             Movement();
         }

Answer 2

Answer by programmrzinc · May 15, 2013 at 01:20 PM

You can call these functions easy!

        if(nearPip == true)
        {
          Rotator();
 
        }
        if(nearPip == false)
        {
          Movement();
 
        }

Add comment · Share

Answer 3

Answer by Schimauscha · Nov 07, 2014 at 09:13 AM

@alucardj Thank you very much! :)

Add comment · Share

Calling functions in Javascript

3 Replies

Your answer

Follow this Question

Related Questions