create custom class

Questions & Answers
1

HI.

I want create custom class in my script and define custom variables in this class. for do this I create another public class and defined my variables inside it. but when i play the game, it give me below error:

NullReferenceException: Object reference not set to an instance of an object

This is my script:

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class _Player : MonoBehaviour {

	Player player;

	// Use this for initialization
	void Start ()
	{

	}
	
	// Update is called once per frame
	void Update () 
	{
		player.x = transform.position.x;
		player.y = transform.position.y;
	}

}

public class Player
{
	public float x;
	public float y;
}

Anyone know why unity give me this error?

Thanks.

2

when you make a new instance of your class you have to initialize it first before you can do anything with it.

player = new Player();
3

Thanks it work.