Opening/Closing doors

I was wondering if somebody could explain door opening/closing code to me please.
as far as i know i need two different scripts, one on the player and another on the door (i will be having several doors in the scene). I would like to be casting a ray from my player looking for the doors, once it finds one it accesses the script thats on the door. Here’s what i have so far.

Script on the player

	public float rayDistance = 3f;
	void Update() 
		RaycastHit hit; 
		Ray ray = Camera.main.ViewportPointToRay (new Vector3 (0.5f, 0.5f, 0f));

script on the door

//access player raycast
	if (Input.GetKeyDown (KeyCode.E))
    			print ("e was pressed");
    			if (Physics.Raycast (ray, out hit, rayDistance))  
    				print ("Ray hit a surface");
    				if (hit.collider.gameObject.thisobject) 
    					print ("ray cast on door");

One thing to keep in mind is that variables are not automatically shared between scripts. You have to move the code from the door script to the player script.