TweenPulse.cs

// TweenPulse.cs
// Last edited 9:45 PM 04/21/2015 by Aaron Freedman

using UnityEngine;

namespace Assets.PrototypingKit
{
    public class TweenPulse : MonoBehaviour
    {
        public float pulsePeriod;
        public float sizeMultiplier;
        public float gravity;
        private float lastPulse;
        private Vector3 originalScale;
        public bool flashOnPulse;
        public Color flashColor;
        public float colorGravity;
        private Color originalColor;
        public bool autoTween;

        private void Start()
        {
            lastPulse = Time.time;
            originalScale = transform.localScale;
            originalColor = GetComponent<Renderer>().material.color;
        }

        private void FixedUpdate()
        {
            if (autoTween)
            {
                if (Time.time > lastPulse + pulsePeriod)
                {
                    Pulse();
                }
            }
            if (transform.localScale != originalScale)
            {
                transform.localScale = Vector3.Lerp(transform.localScale, originalScale, gravity * Time.deltaTime);
            }
            if (GetComponent<Renderer>().material.color != originalColor)
            {
                if (flashOnPulse)
                {
                    GetComponent<Renderer>().material.color = Color.Lerp(GetComponent<Renderer>().material.color, originalColor,
                                                                         colorGravity * Time.deltaTime);
                }
            }
        }

        public void Pulse()
        {
            Pulse(flashColor);
        }

        public void Pulse(Color color)
        {
            Pulse(color, sizeMultiplier);
        }

        public void Pulse(Color color, float scale)
        {
            lastPulse = Time.time;
            transform.localScale *= scale;
            if (flashOnPulse)
            {
                GetComponent<Renderer>().material.color = color;
            }
        }
    }
}