CS109 C# - Attach to a coin or other pickup item. Destroys the item and optionally shows a particle effect.

Pickup.cs

using UnityEngine;
using System.Collections;

public class Pickup : MonoBehaviour {

	public GameObject pickupEffect;	// optional prefab particle effect

	void OnTriggerEnter2D (Collider2D other) 
	{
		if (other.CompareTag("Player"))
			{
			if (pickupEffect)
				Instantiate(pickupEffect, transform.position, transform.rotation);

		        Destroy(gameObject);	// get rid of the pickup object
		    }
	}
}