Update ResourceManager

Assets/Scripts/Resources/Items/Stone.asset

@@ -0,0 +1,18 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 232c60ba7df6f074d9c92fa97215e412, type: 3}
+  m_Name: Stone
+  m_EditorClassIdentifier: 
+  name: New Item
+  uuid: new_item
+  icon: {fileID: 0}
+  isDefaultItem: 0

Assets/Scripts/Resources/Items/Stone.asset.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 9309bb620f211124297c6d9da498fca1
+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 11400000
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Assets/Scripts/Resources/Scripts/ResourceManager.cs

@@ -16,4 +16,18 @@ public class ResourceManager: MonoBehaviour
         itemList.Add(item);
     }
 
+    public int Count(Item item)
+    {
+        int count = 0;
+
+        foreach(Item i in itemList)
+        {
+            if(i == item)
+            {
+                count += 1;
+            }
+        }
+
+        return count;
+    }
 }