Hi, I can't seem to get my script working, which is meant to animate my sprite upon movement. Can anybody tell me what is wrong with this script? I have all of the images in the right place, it just seems to animate even when not moving.

Here is the script:

public var frameSpeed:float=0.05;

private var nextFrame:float=0;

public var sprites:Texture2D [];

private var counter:int=0;

function Update ()

{

if (Input.GetKey(KeyCode.UpArrow))

{

this.transform.Translate(Vector3.left*5*Time.deltaTime);

changeTexture ();

}

if (Input.GetKey (KeyCode.DownArrow))

{

this.transform.Translate (-Vector3.left*5*Time.deltaTime);

changeTexture ();

}

if (Input.GetKey (KeyCode.LeftArrow))

{

this.transform.Rotate(-Vector3.up*100*Time.deltaTime);

}

if (Input.GetKey (KeyCode.RightArrow))

{

this.transform.Rotate (Vector3.up*100*Time.deltaTime);

}

this.renderer.material.SetTexture ("_MainTex", sprites[counter]);

counter++;

if (counter==sprites.Length) counter=0;

}

function changeTexture ()

{

this.renderer.material.SetTexture("_MainTex", sprites[counter]);

if (Time.time>nextFrame)

{

counter++;

nextFrame=Time.time+frameSpeed;

}

if (counter==sprites.Length) counter=0;

}