RaycastError

Questions & Answers
1

I am using a raycast script to place a 2d object in 2d space, but it keeps coming up with ‘Object reference not set to an instance of an object’
When i use the same line of code in a 2d world with only 3d objects, it works fine.

	void Update () 
	{
		mousePos = Input.mousePosition;

		RaycastHit hit;
		Ray ray = Camera.main.ScreenPointToRay (mousePos); // it selects this line
		
		if (Physics.Raycast (ray, out hit, 1000))
		{
			if(hit.transform.tag == "PlaceablePath")
			{
				for(int i = 0; i < towers.Count; i ++)
				{
					if (towers*.selected == true && Input.GetButtonDown ("Place"))*

  •  			{*

_ towers*.selected = false;_
_ GameObject clone = Instantiate(towers.towerObject, hit.transform.position, Quaternion.identity) as GameObject;
 }
 }
 }
 }
 }*_

2

check towers is nut null, that each tower has a towerObject that is not null, you could probably give more context to your error because it will refer to a specific line…

3

you should use a line cast not a raycast