Move from point to point?

Questions & Answers
1

How would I make an object move from the position of object A, to the position of object B to the position of object C and then to A, etc. at a constant speed? I have tried looking into the "moving platform" script from the 2D platform tutorial from the unity resources but the speed seems to be based only on two objects, how can I have it be more (and at a constant speed)? Here is the script.

> var targetA : GameObject; var targetB
> : GameObject;
> 
> var speed : float = 0.1;
> 
> function FixedUpdate () {
>     transform.position =
> targetA.transform.position * speed
>                         + targetB.transform.position * speed; }

and here is a modified version (mine) that, when applied to an object, appears to do nothing(I am getting no errors though).

var targetA : GameObject;
var targetB : GameObject;

var speed : float = 0.1;

function FixedUpdate () {
  transform.position = targetA.transform.position * speed
                      + targetB.transform.position * speed;
}

Thanks :)

2

I made this code and didn't test it, but it should work or at least close to solve your problem. It's in JavaScript.

//you can use Vector3 arrays instead of Transform and that way you avoid the need of GameObjects like this:
/*
var waypoint : Vector3[];
and you can set waypoints relative to object position and
make different waypoints for any game object.. but that would need different coding :p
*/
var targetA : Transform;
var targetB : Transform;
var targetC : Transform;

private var currentTarget : Transform;
var proximity : float = 1.0;

var speed : float = 1.0;

//with function Start we set at start the current target
function Start ()
{
   currentTarget = targetA;
}

function Update ()
{
   var Distance : Vector3 = currentTarget.transform.position - transform.position;

   //if "player" is "1" unit far, change currentTarget to next one
   if(Distance.magnitude < proximity)
   {
      switch(currentTarget)
      {
         case targetA:
            currentTarget = targetB;
         break;
         case targetB:
            currentTarget = targetC;
         break;
         case targetC:
            currentTarget = targetA;
         break;
      }
   }

   transform.position = Vector3.Slerp(transform.position, currentTarget.transform.position, Time.deltaTime * speed);
   //make object look towards currentTarget
   transform.LookAt(currentTarget);
}

Now if you want to move your object through more complex waypoints i recommend you using arrays... I leave you this link from a code of mine but be aware it has some motion bugs...

http://answers.unity3d.com/questions/28390/enemy-jumping-with-each-waypoint-start