Use coroutine to change wall transparency

Assets/Scripts/src/Wall/WallTransparency.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using src.Base;
 using src.Helpers;
@@ -8,6 +9,7 @@ namespace src.Wall
 {
     public class WallTransparency : GameplayComponent
     {
+        public float secondsToWait = 0.1f; 
         private SpriteRenderer _spriteRenderer;
         private Color _originalSpriteColor;
         private bool _isTransparent;
@@ -16,9 +18,12 @@ namespace src.Wall
         {
             _spriteRenderer = GetComponentInChildren<SpriteRenderer>();
             _originalSpriteColor = _spriteRenderer.color;
+            StartCoroutine(nameof(CheckIfSomethingNear));
         }
 
-        private void Update()
+        private IEnumerator CheckIfSomethingNear()
+        {
+            while (true)
             {
                     var position = transform.position;
                     /* RayCast from the center of the tile up one distance and set layerMask to Player only! */
@@ -32,6 +37,9 @@ namespace src.Wall
                     {
                         BecomeOpaque();
                     }
+
+                    yield return new WaitForSeconds(secondsToWait);
+            }
         }
 
         private void ChangeSpriteAlpha(float alpha)

ProjectSettings/GraphicsSettings.asset

@@ -32,6 +32,9 @@ GraphicsSettings:
   - {fileID: 10753, guid: 0000000000000000f000000000000000, type: 0}
   - {fileID: 10770, guid: 0000000000000000f000000000000000, type: 0}
   - {fileID: 10783, guid: 0000000000000000f000000000000000, type: 0}
+  - {fileID: 16000, guid: 0000000000000000f000000000000000, type: 0}
+  - {fileID: 17000, guid: 0000000000000000f000000000000000, type: 0}
+  - {fileID: 16001, guid: 0000000000000000f000000000000000, type: 0}
   m_PreloadedShaders: []
   m_SpritesDefaultMaterial: {fileID: 10754, guid: 0000000000000000f000000000000000,
     type: 0}