Colliding with certain obj can stun the player

Assets/PlayerController.cs

@@ -0,0 +1,29 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class PlayerController : MonoBehaviour
+{
+    [SerializeField]
+    private LayerMask stunLayerMask;
+    private GrappleHook grappleScript;
+    [SerializeField]
+    private float stunDuration;
+    // Start is called before the first frame update
+    void Start()
+    {
+        grappleScript = GetComponent<GrappleHook>();
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        
+    }
+
+    private void OnCollisionEnter(Collision other) {
+        if(((1<<other.gameObject.layer) & stunLayerMask) != 0){//Collided w/ somtehing that stuns
+            grappleScript.Stun(stunDuration);
+        }
+    }
+}

Assets/PlayerController.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 9b5fa9960655cb742880ef94db81ca9c
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scenes/Dev.unity

@@ -542,7 +542,7 @@ Transform:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 335131023}
   m_LocalRotation: {x: -0, y: -0, z: -0, w: 1}
-  m_LocalPosition: {x: 16.07, y: 10.1, z: 0}
+  m_LocalPosition: {x: 9.4, y: 16.4, z: 0}
   m_LocalScale: {x: 2.8042, y: 2.8042, z: 6.9}
   m_ConstrainProportionsScale: 0
   m_Children: []
@@ -1444,6 +1444,12 @@ MonoBehaviour:
   m_ShadowLayerMask: 1
   m_LightCookieSize: {x: 1, y: 1}
   m_LightCookieOffset: {x: 0, y: 0}
+--- !u!1 &951718810 stripped
+GameObject:
+  m_CorrespondingSourceObject: {fileID: 1772573266731274171, guid: 4dbf735f9da7b9f43b69f1577e4e5763,
+    type: 3}
+  m_PrefabInstance: {fileID: 1341139406}
+  m_PrefabAsset: {fileID: 0}
 --- !u!1 &952326952
 GameObject:
   m_ObjectHideFlags: 0
@@ -1456,7 +1462,7 @@ GameObject:
   - component: {fileID: 952326955}
   - component: {fileID: 952326954}
   - component: {fileID: 952326953}
-  m_Layer: 3
+  m_Layer: 7
   m_Name: Floor_02
   m_TagString: Untagged
   m_Icon: {fileID: 0}
@@ -2023,6 +2029,22 @@ Transform:
     type: 3}
   m_PrefabInstance: {fileID: 1341139406}
   m_PrefabAsset: {fileID: 0}
+--- !u!114 &1341139415
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 951718810}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 9b5fa9960655cb742880ef94db81ca9c, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  stunLayerMask:
+    serializedVersion: 2
+    m_Bits: 128
+  stunDuration: 2
 --- !u!1 &1530935835
 GameObject:
   m_ObjectHideFlags: 0

Assets/Scripts/GrappleHook.cs

@@ -39,11 +39,11 @@ public class GrappleHook : MonoBehaviour
     private SpringJoint joint;
     private LineRenderer lr;
     RaycastHit hit;
-    private bool grappled = false, grappling = false, boosted = false, changingLength = false;
+    private bool grappled = false, grappling = false, boosted = false, changingLength = false, isStunned = false;
     float changingLengthDir = 0;
     private Vector3 currGrappleEndPos;
     
-
+#region private methods
     void Start()
     {
         lr = gameObject.GetComponentInChildren<LineRenderer>();
@@ -55,6 +55,9 @@ public class GrappleHook : MonoBehaviour
 
     void Update()
     {
+        if(isStunned){
+            return;
+        }
         
         if(grappled){
             DrawRope(Time.deltaTime);
@@ -153,6 +156,23 @@ public class GrappleHook : MonoBehaviour
         
     }
 
+    private void UnStun(){
+        isStunned = false;
+        Debug.Log("unstunned");
+    }
+#endregion
+
+#region public methods
+
+public void Stun(float duration){
+    isStunned = true;
+    EndGrapple();
+    Debug.Log("Stunned");
+    Invoke("UnStun", duration);
+}
+#endregion
+
+#region InputActions
     public void Grapple(InputAction.CallbackContext context){
         if(grappling && grappled)return;
         if(context.performed){
@@ -194,5 +214,5 @@ public class GrappleHook : MonoBehaviour
         }
             
     }
-
+#endregion
 }

ProjectSettings/TagManager.asset

@@ -12,7 +12,7 @@ TagManager:
   - Water
   - UI
   - Grappleable
-  - 
+  - Stun
   - 
   - 
   -