this block button isn't enough i want that youkai dead

Assets/Scenes/Prototype.unity

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@@ -5104,6 +5271,140 @@ PrefabInstance:
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Assets/Scripts/GridManager.cs

@@ -20,15 +20,17 @@ public class GridManager : MonoBehaviour
     }
 
     #endregion
+    [Header("Size")]
     [SerializeField] private int width;
     [SerializeField] private int height;
 
+    [Header("Cache")]
     [SerializeField] private TileObject tilePrefab;
-    
     [SerializeField] Camera cam;
+    [SerializeField] private Transform grid;
+    [SerializeField] LayerMask environmentLayer;
 
     private Dictionary<Vector2, TileObject> allTiles = new();
-    [SerializeField] private Transform grid;
     private void Start()
     {
         GenerateGrid();
@@ -60,6 +62,11 @@ public class GridManager : MonoBehaviour
                 newTile.name = $"Tile {x} {y}";
                 allTiles[pos] = newTile;
                 newTile.transform.SetParent(grid);
+                Collider2D isBlocked = Physics2D.OverlapCircle(newTile.transform.position, 0.05f, environmentLayer);
+                if (isBlocked)
+                {
+                    newTile.blocked = true;
+                }
             }
         }
         GetTileNeighbors();
@@ -73,10 +80,14 @@ public class GridManager : MonoBehaviour
             {
                 Vector2 pos = new Vector2(x - ((float)width / 2) + 0.5f, y - ((float)height / 2) + 0.5f);
                 TileObject currentTile = allTiles[pos];
-                if (GetTileFromWorldPos(pos + Vector2.up)) { currentTile.neighbors.Add(GetTileFromWorldPos(pos+Vector2.up));}
+                TileObject upTile = GetTileFromWorldPos(pos + Vector2.up);
-                if (GetTileFromWorldPos(pos + Vector2.down)) { currentTile.neighbors.Add(GetTileFromWorldPos(pos+Vector2.down));}
+                if (upTile && !upTile.blocked) { currentTile.neighbors.Add(upTile);}
-                if (GetTileFromWorldPos(pos + Vector2.left)) { currentTile.neighbors.Add(GetTileFromWorldPos(pos+Vector2.left));}
+                TileObject downTile = GetTileFromWorldPos(pos + Vector2.down);
-                if (GetTileFromWorldPos(pos + Vector2.right)) { currentTile.neighbors.Add(GetTileFromWorldPos(pos+Vector2.right));}
+                if (downTile && !downTile.blocked) { currentTile.neighbors.Add(downTile);}
+                TileObject leftTile = GetTileFromWorldPos(pos + Vector2.left);
+                if (leftTile && !leftTile.blocked) { currentTile.neighbors.Add(leftTile);}
+                TileObject rightTile = GetTileFromWorldPos(pos + Vector2.right);
+                if (rightTile && !rightTile.blocked) { currentTile.neighbors.Add(rightTile);}
             }
         }
     }

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