Why am I getting a NullReferenceException while trying to set a Sprite? (C#)

Questions & Answers
1

I created a tool for automatically generating a group of hexes. It can successfully create, name, and place the GameObjects in the right place. However, when I tried to make it give the objects a default sprite, I kept getting a null reference error on line 17 which just says HexImage =. If I get rid of this part of the code, the hex objects each get an empty Sprite Renderer. Is there a way to assign he default sprite other than this, or is there some way I can resolve this issue?

Here is the error I am getting:

NullReferenceException: Object reference not set to an instance of an object
HexGenerator.Create () (at Assets/Editor/HexGenerator.cs:17)

This is the code I am using:

using UnityEngine;
using UnityEditor;
using System.Collections;

public class HexGenerator 
{
    [MenuItem("Hex Board/Generate Tiles")]
    static void Create()
    {
        int y = 6;
        int x = 6;
        float Xdist = 1.328f; //The x distance between adjacent tiles
        float Ydist = 1.016f; //The y distance between adjecent tiles
        //GameObject Container = new GameObject("Hexes");
        GameObject HexBlueprint;
        Sprite HexImage = new Sprite();
        HexImage = 
            Sprite.Create(Resources.Load<Texture2D>("Assets/Base Hex.png"),
            new Rect(0, 0, Resources.Load<Texture2D>("Assets/Base Hex.png").width, Resources.Load<Texture2D>("Assets/Base Hex.png").height),
            new Vector2(0.5f, 0.5f));

        for (int i = 0; i < y; i++)
        {
            for (int j = 0; j < x; j++)
            {
                if (i % 2 == 0)
                {
                    HexBlueprint = new GameObject("Hex " + j + "," + i);
                    HexBlueprint.transform.position = new Vector3(j * Xdist, i * Ydist);

                    SpriteRenderer renderer = HexBlueprint.AddComponent<SpriteRenderer>();
                    renderer.sprite = HexImage;
                }
                else
                {
                    HexBlueprint = new GameObject("Hex " + j + "," + i);
                    HexBlueprint.transform.position = new Vector3(j * Xdist + Xdist / 2, i * Ydist);

                    SpriteRenderer renderer = HexBlueprint.AddComponent<SpriteRenderer>();
                    renderer.sprite = HexImage;
                }
            }
        }
    }
}
2

Resources.Load works starting from a folder Called: Resources. so create a folder called : Resources in Assets and put the files in it and then use this instead:

Resources.Load<Texture2D>("Base Hex")

Note that the .png is removed, so NEVER put two files with same name but different extension in the same folder.

personally i create inside Resources folders like: Textures, Materials, Scripts, Scenes etc… if so then put your pong files inside textures inside Resources inside Assets and use:

Resources.Load<Texture2D>("Textures/Base Hex")

hope this helps

3

God bless you. All the places I read from had not mentioned you needed to have a folder called Resources to use Resources.Load. I really appreciate this!