NullReferenceException For A Class' Variable Call

Questions & Answers
1

Im getting a null issue with a variable. I cant figure out how to assign it.

public BrushTool brush;

public class BrushTool 

{

	public float width = 4;

	public float hardness = 40;

}

public void Brush(Vector2 p1, Vector2 p2)

{
	if (p2 == Vector2.zero) 
	{
		p2 = p1;
	}

	Debug.Log(brush);

	Drawing.PaintLine(p1,p2,brush.width,brush.hardness,col,baseTex);
	baseTex.Apply();
}

The Drawing.PaintLine is where its calling the NRE. I know its this brush that causing it.Here is the Debug.Log:

Null
UnityEngine.Debug:Log(Object)

2

Most likely this is happening because you haven’t initialized your instance of the BrushTool class brush. So, when you declare your variable brush, you need to do:

public BrushTool brush = new BrushTool();