error CS1525: Unexpected symbol `??'

Hey guys! iam trying to create a building placement script but i have a weird error:
Assets/Script/BuildingPlacement.cs(30,66): error CS1525: Unexpected symbol ??', expecting identifier’

here is the code: maybe you can have a look over it and help me out?

using UnityEngine;
using System.Collections;

public class BuildingPlacement : MonoBehaviour {

	public float scrollSensitivity;
		
	private PlaceableBuilding placeableBuilding;
	private Transform  currentBuilding;
	private bool hasPlaced;
	
	public LayerMask buildingsMask;
	
	private PlaceableBuilding placeableBuildingOld;
	
	public float speed = 30; 
	
	
	// Update is called once per frame
	void Update () {
	
		//Vector3 m = Input.mousePosition;
		//m = new Vector3(m.x,m.y,transform.position.y);
		//Vector3 p = camera.ScreenToWorldPoint(m);
		
		if (currentBuilding != null && !hasPlaced){
			//rotate object
			//var speed = 30;
			RaycastHit hit = new RaycastHit();
			Ray ray = camera.ScreenPointToRay(Input.­mousePosition);
			Physics.Raycast(ray,out hit, Mathf.Infinity, groundMask);
			
			if (Input.GetKey(KeyCode.A))
    		currentBuilding.transform.Rotate(Vector3.down * speed * Time.deltaTime);
			
			//currentBuilding.position = new Vector3(p.x,0,p.z);
			currentBuilding.position = hit.point;
			
			if (Input.GetMouseButtonDown(0)) {
				if (IsLegalPosition()) {
					hasPlaced = true;
				}
			}
		}
		else {
			if (Input.GetMouseButtonDown(0)) {
				RaycastHit hit = new RaycastHit();
				Ray ray = new Ray(new Vector3(p.x,8,p.z), Vector3.down);
				if (Physics.Raycast(ray, out hit,Mathf.Infinity,buildingsMask)) {
					if (placeableBuildingOld != null) {
						placeableBuildingOld.SetSelected(false);
					}
					hit.collider.gameObject.GetComponent<PlaceableBuilding>().SetSelected(true);
					placeableBuildingOld = hit.collider.gameObject.GetComponent<PlaceableBuilding>();
				}
				else {
					if (placeableBuildingOld !=null) {
						placeableBuildingOld.SetSelected(false);
					}
				}
			}
		}
	}

	bool IsLegalPosition() {
		if (placeableBuilding.colliders.Count > 0) {
			return false;
		}
		return true;
	}
	
	public void SetItem(GameObject b) {
		hasPlaced = false;
		currentBuilding = ((GameObject)Instantiate(b)).transform;
		placeableBuilding = currentBuilding.GetComponent<PlaceableBuilding>();
	}
}

thanks for any hint :slight_smile:

drawing the text in your code block into nodePad++ it looks like there is a hidden character after the “.” in “Input.mousPosition” the errors seem to go away when this is retyped.

whenever you get an error stating that there is a character in your code that you can not physically see then the best suggestion would be to draw the code into a text editor with the ability to “show all characters” takes a moment to get accustomed to it, but you will see everything.

you can also use this method to check inconsistent line endings yourself.

removing that line of code and writing again may solve your problem.