Script reorganization and UseItem created

Assets/Scripts/UseItem.cs

@@ -2,15 +2,57 @@ using UnityEngine;
 
 public class UseItem : MonoBehaviour
 {
-    // Start is called once before the first execution of Update after the MonoBehaviour is created
-    void Start()
-    {
-        
-    }
+    private GameObject heldItem;
+    private bool isHoldingItem = false;
 
-    // Update is called once per frame
     void Update()
     {
-        
+        if (isHoldingItem)
+        {
+            heldItem.transform.position = transform.position;
+        }
+    }
+
+    private void OnTriggerEnter2D(Collider2D collision)
+    {
+        if (collision.CompareTag("Item") && !isHoldingItem)
+        {
+            PickUpItem(collision.gameObject);
+        }
+    }
+
+    private void PickUpItem(GameObject item)
+    {
+        heldItem = item;
+        isHoldingItem = true;
+        item.GetComponent<Collider2D>().enabled = false;
+    }
+
+    public void DropItem()
+    {
+        if (isHoldingItem)
+        {
+            heldItem.GetComponent<Collider2D>().enabled = true;
+            heldItem = null;
+            isHoldingItem = false;
+        }
+    }
+
+    private void OnEnable()
+    {
+        Punch.OnPlayerPunched += HandlePlayerPunched;
+    }
+
+    private void OnDisable()
+    {
+        Punch.OnPlayerPunched -= HandlePlayerPunched;
+    }
+
+    private void HandlePlayerPunched(GameObject punchedPlayer)
+    {
+        if (punchedPlayer == gameObject)
+        {
+            DropItem();
+        }
     }
 }