Pause animation door when you block it while opens/closes

Questions & Answers
1

I created a door with 3 animations: Idle, Open and Close animation. When I interact with the door, it opens/closes, and if I do it while block its way, it pushes me.
Then I want to create a script that pauses door animations when the player blockes it… and I can do it!

The problem is now: I want to create a script that pauses door animations ONLY IF the player hinds the opening/closing of the door. With the actual script, where I use OnTriggerEnter, if player touches the door, doesn’t matter where it touches, the door animation pauses. But I want this only if the player touches the door towards the opening/closing.

I thought to use Collider.Raycast (because the door has a box collider), but i don’t know how to distinguish the collisions from front or back of the door.

2

You don’t need animations etc. Unity people did everything for you.

Check this out:

3

Now i created this script attached in a gameobject with a box collider, and this gameobject is child of the door

using UnityEngine;
using System.Collections;

public class BlockDoor : MonoBehaviour {

	private Animation anim;

	private GameObject door;

	private Rotating_Normal_Door doorScript;

	void Start () 
	{
		door = transform.parent.gameObject; 
		anim = door.GetComponent<Animation> ();
		doorScript = door.GetComponent<Rotating_Normal_Door> ();
	}

	void OnTriggerStay (Collider col) 
	{
		if (col.gameObject.tag == "Player" && anim.isPlaying == true) 
		{
			foreach (AnimationState state in anim) 
			{
				state.speed = 0.0F;
			}
		}
	}

	void OnTriggerExit (Collider col) 
	{
		if (col.gameObject.tag == "Player" && anim.isPlaying == true) 
		{
			foreach (AnimationState state in anim) 
			{
				state.speed = 1.0F;
			}
		}
	}
}

Works good but the door stops also when player touches it on the opposite direction.