HTSpriteSheet.Update C# (CSharp) Method

    void Update()
    {
        bool end=false;

        Camera_BillboardingMode();

        // Calculate index

        float index = (Time.time-startTime) * framesPerSecond;

        if (!isOneShot && life>0 && (Time.time -lifeStart)> life){
            effectEnd=true;
        }

        if ((index<=spriteCount || !isOneShot ) && !effectEnd ){

            if (index >= spriteCount){
                startTime = Time.time;
                index=0;
                if (addColorEffect){
                    currentColor = colorStart;
                    meshRender.material.SetColor("_Color", currentColor);
                }
                currentSize = sizeStart;
                myTransform.localScale = currentSize;

                if (randomRotation){
                    currentRotation = Random.Range(-180.0f,180.0f);
                }
                else{
                    currentRotation = rotationStart;
                }
            }
            // repeat when exhausting all frames
            index = index % (uvAnimationTileX * uvAnimationTileY);

            // Size of every tile
            Vector2 size = new Vector2 (1.0f / uvAnimationTileX, 1.0f / uvAnimationTileY);

            // split into horizontal and vertical index
            float uIndex = Mathf.Floor(index % uvAnimationTileX);
            float vIndex = Mathf.Floor(index / uvAnimationTileX);

            // build offset
            Vector2 offset = new Vector2 (uIndex * size.x , 1.0f - size.y - vIndex * size.y);

           	GetComponent<Renderer>().material.SetTextureOffset ("_MainTex", offset);
            GetComponent<Renderer>().material.SetTextureScale ("_MainTex", size);

            GetComponent<Renderer>().enabled = true;
        }
        else{
         		effectEnd = true;
            GetComponent<Renderer>().enabled = false;
            end = true;

            if (soundEffect){
                if (soundEffect.isPlaying){
                    end = false;
                }
            }

            if (addLightEffect && end){
                if (GetComponent<Light>().intensity>0){
                    end = false;
                }
            }

            if (end){
                Destroy(gameObject);
         			}
        }

        // Size
        if (sizeStart != sizeEnd){
            myTransform.localScale += sizeStep * Time.deltaTime ;
        }

        // Light effect
         	if (addLightEffect && lightFadeSpeed!=0){
            GetComponent<Light>().intensity -= lightFadeSpeed*Time.deltaTime;
        }

        // Color Effect
        if (addColorEffect){
            currentColor = new Color(currentColor.r + colorStep.r * Time.deltaTime,currentColor.g + colorStep.g* Time.deltaTime,currentColor.b + colorStep.b* Time.deltaTime , currentColor.a + colorStep. a*Time.deltaTime);
            meshRender.material.SetColor("_TintColor", currentColor);
        }
    }