Slots: On hover not works

Assets/Scripts/PlacementSystem/CameraSlotClickDetect.cs

@@ -1,5 +1,6 @@
 using System.Collections;
 using System.Collections.Generic;
+using Unity.VisualScripting;
 using UnityEngine;
 
 public class CameraSlotClickDetect : MonoBehaviour
@@ -7,15 +8,19 @@ public class CameraSlotClickDetect : MonoBehaviour
     public Camera mainCamera;
     public LayerMask layerMask;
 
+    private SlotManager PrevHoveredSlot;
+
     void Update()
     {
         if (Input.GetMouseButtonDown(0))
         {
-            ShootRay();
+            ShootClickRay();
         }
+
+        ShootHoverRay();
     }
 
-    void ShootRay()
+    void ShootClickRay()
     {
         Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
         RaycastHit hit;
@@ -24,8 +29,29 @@ public class CameraSlotClickDetect : MonoBehaviour
         {
             var slotInfo = hit.collider.gameObject.GetComponentInParent<SlotManager>();
             slotInfo.OnClick();
+        }
+    }
 
-            Debug.Log($"Hit PlacementSlot! At ({slotInfo.x}, {slotInfo.y})");
+    void ShootHoverRay()
+    {
+        Ray ray = mainCamera.ScreenPointToRay(Input.mousePosition);
+        RaycastHit hit;
+
+        if (Physics.Raycast(ray, out hit, Mathf.Infinity, layerMask))
+        {
+            var slotInfo = hit.collider.gameObject.GetComponentInParent<SlotManager>();
+
+            if (PrevHoveredSlot != null && PrevHoveredSlot != slotInfo)
+            {
+                slotInfo.OnHovered();
+                PrevHoveredSlot.OnUnHovered();
+            }
+
+            PrevHoveredSlot = slotInfo;
+        }
+        else
+        {
+            PrevHoveredSlot = null;
         }
     }
 }

Assets/Scripts/PlacementSystem/PlacementManager.cs

@@ -67,6 +67,7 @@ public class TowerPlacementManager : MonoBehaviour
 
     }
 
+
     [Space(10)]
     public Material SilhouetteMaterial;
     public GameObject ToSilhouette(GameObject obj)

Assets/Scripts/PlacementSystem/SlotManager.cs

@@ -16,8 +16,21 @@ public class SlotManager : MonoBehaviour
     /// </summary>
     public event Action<SlotManager, GridManager, int, int> OnSlotClicked;
 
+    public event Action<SlotManager, GridManager, int, int> OnSlotHovered;
+    public event Action<SlotManager, GridManager, int, int> OnSlotUnHovered;
+
     public void OnClick()
     {
         OnSlotClicked?.Invoke(this, spawnerRef, x, y);
     }
+
+    public void OnHovered()
+    {
+        OnSlotHovered?.Invoke(this, spawnerRef, x, y);
+    }
+
+    public void OnUnHovered()
+    {
+        OnSlotUnHovered?.Invoke(this, spawnerRef, x, y);
+    }
 }