koobas.hobune.stream
NullRefrenceException - Cant find the cost
What is wrong? It cant acess the cost in TowerScript (ts) threw TowerSpot:
bm.selectedTower.GetComponent<.TowerScript>().cost
using UnityEngine;
public class TowerSpot : MonoBehaviour {
void OnMouseUp()
{
Debug.Log("TowerSpot Clicked!");
BuildingManager bm = GameObject.FindObjectOfType<BuildingManager>();
if(bm.selectedTower != null)
{
ScoreManager sm = FindObjectOfType<ScoreManager>();
//cost cant be found! FIXME!
if(sm.money < bm.selectedTower.GetComponent<TowerScript>().cost)
{
Debug.Log("Not enough money");
return;
}
sm.money -= bm.selectedTower.GetComponent<TowerScript>().cost;
Instantiate(bm.selectedTower, transform.position, transform.rotation);
Destroy(transform.gameObject);
}
}
}
using UnityEngine;
public class BuildingManager : MonoBehaviour {
public GameObject selectedTower;
}
using UnityEngine;
public class TowerScript : MonoBehaviour {
public int cost = 5;
}
You may want to get the TowerScript before accessing its members, so that you're sure it exists, and that you keep for later use.
void On$$anonymous$$ouseUp()
{
Debug.Log("TowerSpot Clicked!");
Building$$anonymous$$anager bm = GameObject.FindObjectOfType<Building$$anonymous$$anager>();
if(bm.selectedTower != null)
{
Score$$anonymous$$anager sm = FindObjectOfType<Score$$anonymous$$anager>();
//cost cant be found! FIX$$anonymous$$E!
TowerScript t = bm.selectedTower.GetComponent<TowerScript>();
if(sm.money < t.cost)
{
Debug.Log("Not enough money");
return;
}
sm.money -= t.cost;
Instantiate(bm.selectedTower, transform.position, transform.rotation);
Destroy(transform.gameObject);
}
}
I would also recommend to put that mechanic in the building manager, in a method that you simply call from anywhere.
oh, I forgot to mention, but it'd be even better I believe, if the selectedTower member was of type TowerScript.
sorry for wasting your time. I found the problem and now it is working.
