2D Sprite Animation Script

using UnityEngine;
using System.Collections;

public class animationControlScript : MonoBehaviour {

    private int frameAmount;
    private int animAmount;
    private float animCurrentFrame;
    private  float frameReader = 0f;
    private int lastPlayedId = 0;

    public void animate (GameObject GO, int frameSizePixels, int animId, int realNumberOfFrames, int frameRate) {

        //get number of frames
        frameAmount = (GO.renderer.material.mainTexture.width / frameSizePixels);
        //get number of animations
        animAmount = (GO.renderer.material.mainTexture.height / frameSizePixels);

        //reset frame reader if playing a new animation
        if (lastPlayedId != animId) {
            frameReader = 0f;
        }

        //texture tiling - scale texture to fit number of animations
        GO.renderer.material.mainTextureScale = new Vector2(1.0f / frameAmount, 1.0f / animAmount);
        //frame reading
        GO.renderer.material.mainTextureOffset = new Vector2(frameReader, (1.0f * (animAmount - animId) / animAmount));

        //move frame reader to next frame by the frame rate selected
        if (Time.fixedTime - animCurrentFrame >= (frameRate * 1.0f) / 30.0f ) {
            animCurrentFrame = Time.fixedTime;
            frameReader += 1.0f/frameAmount;

            //if the frame reader is past the existing frame number, return to frame 1
            if (frameReader >= realNumberOfFrames * 1.0f / frameAmount * 1.0f) {
                frameReader = 0f;
            }
        }
        lastPlayedId = animId;

    }//animate end



}