Need help with Dragon instantiate

Questions & Answers
1

Hi, I’m trying to make a prototype for a class and the goal is to make a ninja transform into a dragon after picking up gems. When I place the following code into the Update function the dragon appears but keeps being instantiated to infinity:

if (dragonGems == 5){
			
			GameObject dt = GameObject.Instantiate(dragonPrefab, transform.position, transform.rotation)as GameObject;
			dt.transform.parent = gameObject.transform.parent;
		}

However when I make my own function I pick up 5 gems and nothing happens. It is likely a simple problem to resolve, thanks for the help, here’s the complete code:

using UnityEngine;
using System.Collections;

public class PlayerHP : MonoBehaviour {
	public int playerHP;
	private int dragonGems = 0;
	public GameObject dragonPrefab;
	// Use this for initialization
	void Start () {
		playerHP = 6;
	}

	// Update is called once per frame
	void Update () {

		if(playerHP == 0)

			Destroy (gameObject.transform.gameObject);

		}
	void OnTriggerEnter2D(Collider2D other) {
		if(other.gameObject.tag == "Weapon")
		{
			playerHP--;

			print("Player has " + playerHP + " HP");
		}
		if(other.gameObject.tag == "Gem"){

			dragonGems++;
			print("Player has " + dragonGems + " Dragon Gems");
		 
	
		}
	}

	void DragonTransformation(int dragonGems){

		if (dragonGems == 5){
			
			GameObject dt = GameObject.Instantiate(dragonPrefab, transform.position, transform.rotation)as GameObject;
			dt.transform.parent = gameObject.transform.parent;
		}
	}
}
2

I would use a boolean to check if a dragon has been instantiated.

bool dragon = false; 

void Update(){
         if (dragonGems >= 5 && dragon == false){
                             GameObject dt = GameObject.Instantiate(dragonPrefab, transform.position, transform.rotation)as GameObject;
             dt.transform.parent = gameObject.transform.parent; 

             dragon = true;
         }     
}

it will check to see if dragon is false, then if it is it will instantiate it once and set it to true so that it won’t be instantiated again.