From d3387a88c943f56e941ab403e81ec2789e735997 Mon Sep 17 00:00:00 2001
From: dhain <dhain@htl-steyr.ac.at>
Date: Fri, 3 Jun 2022 09:36:03 +0200
Subject: [PATCH] fixed instance of object is null error when buying items in
 shop

---
 Assets/Scripts/ShopSlot.cs | 30 +++++++++++++++++-------------
 1 file changed, 17 insertions(+), 13 deletions(-)

diff --git a/Assets/Scripts/ShopSlot.cs b/Assets/Scripts/ShopSlot.cs
index f18347e..b34cf12 100644
--- a/Assets/Scripts/ShopSlot.cs
+++ b/Assets/Scripts/ShopSlot.cs
@@ -14,7 +14,7 @@ public class ShopSlot : ItemStorageSlot {
         _inventory = Inventory.instance;
         _playerController = PlayerController.instance;
     }
-    
+
     /**
      * Clears the Shop Slot
      */
@@ -30,17 +30,21 @@ public class ShopSlot : ItemStorageSlot {
      * Gets called when the Shop Slot is clicked
      */
     public override void UseItem() {
-        if(_playerController.Money >= Item.cost) {
-            _inventory.AddItem(Item, 1);
-            _shop.RemoveItem(Item, 1);
-            _playerController.ChangeMoney(-Item.cost);
-            
-            Debug.Log("Buying Item: " + Item.displayName);
-        } else {
-            Debug.Log("Not enough money to buy item.");
+        if(Item) {
+            if(_playerController.Money >= Item.cost) {
+                _inventory.AddItem(Item, 1);
+                _shop.RemoveItem(Item, 1);
+                if(Item) {
+                    _playerController.ChangeMoney(-Item.cost);
+                    
+                    Debug.Log("Buying Item: " + Item.displayName);
+                }
+            } else {
+                Debug.Log("Not enough money to buy item.");
+            }
+
+            _shop.onItemChangedCallback?.Invoke();
+            _inventory.onItemChangedCallback?.Invoke();
         }
-        
-        _shop.onItemChangedCallback?.Invoke();
-        _inventory.onItemChangedCallback?.Invoke();
     }
-}
\ No newline at end of file
+}