Need help with accessing a variable from another script

Question

Hello,

I have been using unity for a while now but this is the first time i need to access a variable from another script and i do not fully understand how to do this. I have been looking for an answer but these don't work for me and i don't know what i'm doing wrong.

I currently have a wood object called "Wood3" and the object has a script attached to it called "PickUp". In the PickUp script i have a public int called woodAmount. But today i wanted to add a campfire wich needs wood before it ignites. So i got a campfire object and attached a script to it called "CampFireFuel" and i want to check if the player has wood to be able to ignite the campfire.

These are the script i am using:

====== PickUp script ======

using UnityEngine; using System.Collections; using UnityEngine.UI;

public class PickUp : MonoBehaviour {

 public GameObject PickupText;
 public Text countText;
 public int woodAmount = 0; 
 
 void OnTriggerStay(Collider collider)
 {

     if (collider.gameObject.name == "PlayerRange") 
     {
         PickupText.SetActive(true);
     }
     

     if (collider.gameObject.name == "PlayerRange" && Input.GetButtonUp ("Use")) 
     {
         Debug.Log ("You collected wood!");
         woodAmount ++;
         countText.text = "Wood: " + woodAmount.ToString ();
         Destroy (gameObject);
         PickupText.SetActive(false);
     }
 }
 

 void OnTriggerExit (Collider collider)
 {
     PickupText.SetActive (false);
 }

 void Start ()
 {
     countText.text = "Wood: " + woodAmount.ToString ();
     woodAmount = 0;
 }

}

====== CampFireFuel script ======

using UnityEngine; using UnityEngine.UI; using System.Collections;

public class CampFireFuel : MonoBehaviour {

 public Text ActionText;
 public GameObject CampfireLight;
 public GameObject HeatParticles;
 public GameObject FlameParticles;
 public GameObject SparkParticles;

void Start () { GameObject.Find ("Wood3").GetComponent ();

     ActionText.text = "";
     CampfireLight.SetActive (false);
     HeatParticles.SetActive (false);
     FlameParticles.SetActive (false);
     SparkParticles.SetActive (false);
 }

void OnTriggerStay (Collider collider) { if (collider.gameObject.name == "PlayerRange") { ActionText.text = "Press E to ignite the fire (-1 wood)"; }

     if (collider.gameObject.name == "PlayerRange" && Input.GetButtonUp ("Use")) 
     {
         if (woodAmount == 0)
         {
             ActionText.text = "You do nit have enough wood!";
         }

         if (woodAmount >= 1)
         {
             woodAmount --;
             CampfireLight.SetActive (true);
             HeatParticles.SetActive (true);
             FlameParticles.SetActive (true);
             SparkParticles.SetActive (true);
             ActionText.text = "";
         }
     }
 }

void OnTriggerExit (Collider collider) { ActionText.text = ""; } }

Thanks for the help and if you need any more information just ask.

Answer 1

Answer by RedHedZed · Jan 08, 2016 at 05:19 PM

The formatting on your script there is a little weird, but it looks like in CampFireFuel's Start() you're finding Wood3 but not doing anything with it. You could do something like this in your CampFireFuel script:

 PickUp woodPickup;//variable of type PickUp

 void Start(){
     //This will find your Wood3 object and assign its PickUp component to woodPickup
     woodPickup = GameObject.Find("Wood3").GetComponent<PickUp>();
 }

Then later in your CampFireFuel script you can access the woodAmount variable by saying:

 woodPickup.woodAmount;

Add comment · Share

Need help with accessing a variable from another script

1 Reply

Your answer

Follow this Question

Related Questions