enemy ai detection

Unity Engine
1

Hi all
when we place an enemy in home.how can stop it from detection player when player is out of home or other side of wall?
Thankful.

2

Use raycasting to shoot a ray from the enemy to the player, and check to see if the ray collides with anything between the enemy and the player to determine if there is a wall in the way.

3

i used it but this dont print a;

if (Physics.Linecast (transform.position, playerTransform.position,out hit))
		{
			print("a");
			return (hit.transform == playerTransform);
			
		}
4

any one hasnt any idea?

5

Do you have to use an “out” parameter? What happens if you remove it and make “hit” a normal variable?