Unity 2D Sprite Trail

DashTrail.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

public class DashTrail : MonoBehaviour
{
	public SpriteRenderer mLeadingSprite;

	public int mTrailSegments;
	public float mTrailTime;
	public GameObject mTrailObject;

	private float mSpawnInterval;
	private float mSpawnTimer;
	private bool mbEnabled;

	private List<GameObject> mTrailObjects;

	// Use this for initialization
	void Start ()
	{
		mSpawnInterval = mTrailTime / mTrailSegments;
		mTrailObjects = new List<GameObject> ();
		mbEnabled = false;
	}
	
	// Update is called once per frame
	void Update ()
	{
		if (mbEnabled)
		{
			mSpawnTimer += Time.deltaTime;

			if (mSpawnTimer >= mSpawnInterval)
			{
				GameObject trail = GameObject.Instantiate (mTrailObject);
				DashTrailObject trailObject = trail.GetComponent<DashTrailObject> ();

				trailObject.Initiate (mTrailTime, mLeadingSprite.sprite, this);
				trail.transform.position = transform.position;
				trail.transform.localScale = mLeadingSprite.gameObject.transform.localScale;
				mTrailObjects.Add (trail);

				mSpawnTimer = 0;
			}
		}
	}

	public void RemoveTrailObject (GameObject obj)
	{
		mTrailObjects.Remove (obj);
	}

	public void SetEnabled (bool enabled)
	{
		mbEnabled = enabled;

		if (enabled)
		{
			mSpawnTimer = mSpawnInterval;
		}
	}

}