Unity 2D Platformer - making my enemy not see through walls - unity3d

Question

basicly i'm searching for an idea. How to make my Enemy patroling, but when it reaches the Player - it rush and deal damage, but in the same time when it reach the wall and player is standing behind the wall it Don't attack. You know - i don't want to let them see through walls.
I have made simple Game Object (rectangle) to point it's sight, it is working correctly but i want to improve some of it.
To make it quckier... i just want to make my enemies attack me but to not seen me througth walls
Some code:
[DamageFromEnemy.cs]
private void FixedUpdate()
{
isThatPlayer = Physics2D.OverlapBox(PlayerDetector.position, new Vector2(playerDetectX, playerDetectY), 0, PlayerLayer);
isThatWall = Physics2D.OverlapBox(PlayerDetector.position, new Vector2(playerDetectX, playerDetectY), 0, gameObject.GetComponent<EnemyScript>().WallLayer);
if (isThatWall == true && gameObject.GetComponent<EnemyScript>().movingRight == true)
{
PlayerDetector.transform.Translate(new Vector3(changePosX, 0, 0));
//playerDetectX -= PlayerDetector.transform.position.x; // Lowering size. Not Working
changePosX = (playerDetectX / 2) * (1 / enemyScaleX) + (enemyScaleX / 2) * (1 / enemyScaleX);
Debug.Log("pozycja x: " + changePosX);
}
if (isThatWall == true && gameObject.GetComponent<EnemyScript>().movingRight == false)
{
PlayerDetector.transform.Translate(new Vector3(- changePosX, 0, 0));
//playerDetectX -= PlayerDetector.transform.position.x; // Lowering size. Not Working
changePosX = (playerDetectX / 2) * (1 / enemyScaleX) + (enemyScaleX / 2) * (1 / enemyScaleX);
Debug.Log("pozycja x: " + changePosX);
}
DetectPlayer();
AttackTimer();
}
void OnDrawGizmosSelected()
{
Gizmos.color = Color.blue;
Gizmos.DrawWireCube(PlayerDetector.position, new Vector3(playerDetectX, playerDetectY));
}
[EnemyScript.cs]
void Update ()
{
trap = Physics2D.OverlapCircle(ColideDetector.position, detectorRadius, TrapLayer);
otherEnemy = Physics2D.OverlapCircle(ColideDetector.position, detectorRadius, EnemyLayer);
if (health <= 0)
{
Destroy(gameObject);
}
transform.Translate(Vector2.right * speed * Time.deltaTime );
RaycastHit2D groundInfo = Physics2D.Raycast(groundDetection.position, Vector2.down, distance);
RaycastHit2D wallInfoR = Physics2D.Raycast(wallDetection.position, Vector2.right, distance, WallLayer);
RaycastHit2D wallInfoL = Physics2D.Raycast(wallDetection.position, Vector2.left, -distance, WallLayer);
if (groundInfo.collider == false || trap == true || otherEnemy == true || wallInfoR == true || wallInfoL == true)
{
if(movingRight == true)
{
transform.eulerAngles = new Vector3(0, -180, 0);
movingRight = false;
}
else
{
transform.eulerAngles = new Vector3(0, 0, 0);
movingRight = true;
}
}
}
Some Gif Feedback
At last gifs frames you can see that it bugs sometimes.
public PlayerControls player;
public LayerMask WallLayer;
player = FindObjectOfType<PlayerControls>();
RaycastHit2D checkWallsToHero = Physics2D.Raycast(wallToHeroRay.position, player.transform.position, 150,WallLayer);
if (checkWallsToHero == true)
{
playerCheck = false;
}
void OnDrawGizmosSelected()
{
Gizmos.color = Color.blue;
Gizmos.DrawWireCube(PlayerDetector.position, new Vector3(playerDetectX, playerDetectY));
Gizmos.DrawLine(wallToHeroRay.position, player.transform.position);
}
[New Code sample - propably wrong]:
isThatPlayer = Physics2D.OverlapBox(PlayerDetector.position, new Vector2(playerDetectX, playerDetectY), 0, PlayerLayer);
isThatWall = Physics2D.OverlapBox(PlayerDetector.position, new Vector2(playerDetectX, playerDetectY), 0, gameObject.GetComponent<EnemyScript>().WallLayer);
RaycastHit2D checkWallsToHero = Physics2D.Raycast(wallToHeroRay.position, player.transform.position, 0, gameObject.GetComponent<EnemyScript>().WallLayer);
if (checkWallsToHero.collider != true /*&& isThatPlayer == true*/)
{
Debug.Log("Pierwszy state");
Debug.Log(checkWallsToHero.collider);
//Debug.Log(isThatPlayer);
//Debug.Log("Hit: " + checkWallsToHero.collider.gameObject.name);
playerCheck = false;
enemyAttackReady = false;
coolDownTimer = 0;
enemyAttackCD = 0;
}
else if (checkWallsToHero.collider == true && isThatPlayer == true)
{
Debug.Log(checkWallsToHero.collider);
Debug.Log("Drugi state");
ReadyToAttack(); //charging enemy
DetectPlayer(); //bool to true when OverlapBox hits player
AttackTimer(); //cd between enemy attacks
}

Answer 1

if (Physics2D.Raycast2D
(wallToHeroRay.position,player.transform.position,out hit,10)
&&hit.transform.gameObject.tag == "Player")
{
RayHit = true;
}
else {
RayHit = false;
}
to use this you will have to tag your player as 'Player' then your ray will only give you a hit if it hits the player itself, and not a wall
Edit: this is code i threw together following #Draco18s's idea in the comments, if it works for you, tell him thank you. i just thought it made enough sense he should have put it as an answer