koobas.hobune.stream
Renderer.materials not working in void update()
this is my code and i get this error every frame
NullReferenceException: Object reference not set to an instance of an object wheelThreeScript.Start () (at Assets/Scripts/wheelScripts/wheelThreeScript.cs:20)
using UnityEngine; using System.Collections;
public class wheelThreeScript : MonoBehaviour {
public int wheelSymbol;
Renderer rend;
SymbolPicker symbolPicker;
public Material coin, coins, damage, heart, skull, jackpot;
// Use this for initialization
void Start () {
Renderer renderer = GetComponent<Renderer> ();
GameObject slotMachine = GameObject.FindGameObjectWithTag ("slotMachine");
symbolPicker = slotMachine.GetComponent<SymbolPicker> ();
rend.material = coin;
}
// Update is called once per frame
void Update () {
wheelSymbol = symbolPicker.wheelThreeSymbol;
if (wheelSymbol == 1)
rend.material = coin;
if (wheelSymbol == 2)
rend.material = coins;
if (wheelSymbol == 3)
rend.material = heart;
if (wheelSymbol == 4)
rend.material = damage;
if (wheelSymbol == 5)
rend.material = skull;
if (wheelSymbol == 6)
rend.material = jackpot;
}
}
You defined a private class member variable "rend":
Renderer rend;
However you never initialize it. In start you have this line:
Renderer renderer = GetComponent<Renderer> ();
which defines a local variable inside start which is initialized to the Renderer component of that gameobject, but you never use that local variable. I think you want to do
rend = GetComponent<Renderer> ();
You've not pasted the code correctly which it makes the line numbers tricky to follow, but I believe the line in question is:
wheelSymbol = symbolPicker.wheelThreeSymbol;
which suggests that the following line is returning null:
symbolPicker = slotMachine.GetComponent<SymbolPicker> ();
which suggests that the GO you're assigning to the symbolPicker variable doesn't have a SymbolPicker component.
