Move from point to point?

Question

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 :)

Answer 1

Best Answer

Answer by BLF-Games · Nov 24, 2010 at 10:29 AM

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

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Tyler 2 · Nov 24, 2010 at 05:04 PM 0

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Thank you. I get an error when I am using the code

"Assets/NewBehaviourScript.js(43,38): BCE0017: The best overload for the method 'UnityEngine.Vector3.Slerp(UnityEngine.Vector3, UnityEngine.Vector3, float)' is not compatible with the argument list '(UnityEngine.Vector3, UnityEngine.Transform, float)'."

BLF-Games · Nov 25, 2010 at 02:29 AM 0

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Ah yes, try changing in that line currentTarget to currentTarget.transform.position

Ninh · Mar 10, 2014 at 10:10 AM 0

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Is there any way to do somethings like this : gameObject.transform.$$anonymous$$oveTo(Point : transform,speed : float)

Move from point to point?

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