Initial

.gitignore

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+
+
+# Created by https://www.toptal.com/developers/gitignore/api/unity
+# Edit at https://www.toptal.com/developers/gitignore?templates=unity
+
+### Unity ###
+# This .gitignore file should be placed at the root of your Unity project directory
+#
+# Get latest from https://github.com/github/gitignore/blob/master/Unity.gitignore
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uilds/
+/[Ll]ogs/
+/[Uu]ser[Ss]ettings/
+
+# MemoryCaptures can get excessive in size.
+# They also could contain extremely sensitive data
+/[Mm]emoryCaptures/
+
+# Asset meta data should only be ignored when the corresponding asset is also ignored
+!/[Aa]ssets/**/*.meta
+
+# Uncomment this line if you wish to ignore the asset store tools plugin
+# /[Aa]ssets/AssetStoreTools*
+
+# Autogenerated Jetbrains Rider plugin
+/[Aa]ssets/Plugins/Editor/JetBrains*
+
+# Visual Studio cache directory
+.vs/
+
+# Gradle cache directory
+.gradle/
+
+# Autogenerated VS/MD/Consulo solution and project files
+ExportedObj/
+.consulo/
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pdb
+*.mdb
+*.opendb
+*.VC.db
+
+# Unity3D generated meta files
+*.pidb.meta
+*.pdb.meta
+*.mdb.meta
+
+# Unity3D generated file on crash reports
+sysinfo.txt
+
+# Builds
+*.apk
+*.unitypackage
+
+# Crashlytics generated file
+crashlytics-build.properties
+
+# Autogenerated files
+InitTestScene*.unity.meta
+InitTestScene*.unity
+
+
+# End of https://www.toptal.com/developers/gitignore/api/unity

.vscode/settings.json

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+{
+    "files.exclude":
+    {
+        "**/.DS_Store":true,
+        "**/.git":true,
+        "**/.gitignore":true,
+        "**/.gitmodules":true,
+        "**/*.booproj":true,
+        "**/*.pidb":true,
+        "**/*.suo":true,
+        "**/*.user":true,
+        "**/*.userprefs":true,
+        "**/*.unityproj":true,
+        "**/*.dll":true,
+        "**/*.exe":true,
+        "**/*.pdf":true,
+        "**/*.mid":true,
+        "**/*.midi":true,
+        "**/*.wav":true,
+        "**/*.gif":true,
+        "**/*.ico":true,
+        "**/*.jpg":true,
+        "**/*.jpeg":true,
+        "**/*.png":true,
+        "**/*.psd":true,
+        "**/*.tga":true,
+        "**/*.tif":true,
+        "**/*.tiff":true,
+        "**/*.3ds":true,
+        "**/*.3DS":true,
+        "**/*.fbx":true,
+        "**/*.FBX":true,
+        "**/*.lxo":true,
+        "**/*.LXO":true,
+        "**/*.ma":true,
+        "**/*.MA":true,
+        "**/*.obj":true,
+        "**/*.OBJ":true,
+        "**/*.asset":true,
+        "**/*.cubemap":true,
+        "**/*.flare":true,
+        "**/*.mat":true,
+        "**/*.meta":true,
+        "**/*.prefab":true,
+        "**/*.unity":true,
+        "build/":true,
+        "Build/":true,
+        "Library/":true,
+        "library/":true,
+        "obj/":true,
+        "Obj/":true,
+        "ProjectSettings/":true,
+        "temp/":true,
+        "Temp/":true
+    }
+}

Assets/Editor/ItemEditor.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEditor.UIElements;
+using UnityEngine;
+using UnityEngine.UIElements;
+
+public class ItemEditor : EditorWindow
+{
+    private ScrollView _scrollView;
+    private List<ItemData> _savedItems = new List<ItemData>();
+
+    [MenuItem("Tools/Item Editor")]
+    public static void OpenWindow()
+    {
+        var window = GetWindow<ItemEditor>();
+        window.titleContent = new GUIContent("Item Editor");
+    }
+
+    private void OnEnable()
+    {
+        var root = this.rootVisualElement;
+        root.style.flexDirection = FlexDirection.Row;
+
+        var itemsListBox = new Box();
+        itemsListBox.style.flexGrow = 1f;
+        itemsListBox.style.flexShrink = 0f;
+        itemsListBox.style.flexBasis = 0f;
+        itemsListBox.style.flexDirection = FlexDirection.Column;
+
+        var newItemBox = new Box();
+        newItemBox.style.flexGrow = 3f;
+        newItemBox.style.flexShrink = 0f;
+        newItemBox.style.flexBasis = 0f;
+
+        SetupItemList(itemsListBox);
+        SetupFields(newItemBox);
+
+        root.Add(itemsListBox);
+        root.Add(newItemBox);
+
+        LoadData();
+    }
+
+    private void SetupFields(Box parent)
+    {
+        var newItemLabel = new Label("New Item");
+        newItemLabel.style.alignSelf = Align.Center;
+        newItemLabel.style.unityFontStyleAndWeight = FontStyle.Bold;
+        parent.Add(newItemLabel);
+
+        var nameField = new TextField("Name: ");
+        var rarityField = new EnumField("Rarity: ", ItemRarity.Common);
+        var priceField = new IntegerField("Price: ");
+        parent.Add(nameField);
+        parent.Add(rarityField);
+        parent.Add(priceField);
+
+        var saveItemButton = new Button();
+        saveItemButton.text = "Save Item";
+        saveItemButton.clicked += () => {
+            if (string.IsNullOrWhiteSpace(nameField.value) == false)
+            {
+                var item = new ItemData();
+                item.id = new Guid().GetHashCode();
+                item.name = nameField.value;
+                item.rarity = (ItemRarity)rarityField.value;
+                item.price = priceField.value;
+
+                _savedItems.Add(item);
+
+                //  set default values to clear fields
+                nameField.value = "";
+                rarityField.value = ItemRarity.Common;
+                priceField.value = 0;
+
+                CreateListItem(item);
+                SaveData();
+            }
+        };
+
+        parent.Add(saveItemButton);
+    }
+
+    private void SetupItemList(Box parent)
+    {
+        var listLabel = new Label("Item List");
+        listLabel.style.alignSelf = Align.Center;
+        listLabel.style.unityFontStyleAndWeight = FontStyle.Bold;
+        parent.Add(listLabel);
+
+        _scrollView = new ScrollView();
+        _scrollView.showHorizontal = false;
+        _scrollView.style.flexGrow = 1f;
+        parent.Add(_scrollView);
+    }
+
+    private void CreateListItem(ItemData itemData)
+    {
+        var itemElement = new VisualElement();
+        itemElement.style.flexDirection = FlexDirection.Row;
+        itemElement.focusable = true;
+
+        var remove = new Button();
+        remove.text = "-";
+        remove.clicked += () => {
+            _scrollView.contentContainer.Remove(itemElement);
+            _savedItems.Remove(itemData);
+            SaveData();
+        };
+        itemElement.Add(remove);
+
+        var nameButton = new Button();
+        nameButton.text = itemData.name;
+        nameButton.style.flexGrow = 1f;
+        itemElement.Add(nameButton);
+
+        _scrollView.contentContainer.Add(itemElement);
+    }
+
+    public void SaveData()
+    {
+        var path = Application.dataPath + "/Resources/items.json";
+
+        var itemsFile = new ItemsFile();
+        itemsFile.data = new List<ItemData>(_savedItems);
+        var itemsFileAsJson = JsonUtility.ToJson(itemsFile, true);
+        System.IO.File.WriteAllText(path, itemsFileAsJson);
+    }
+
+    public void LoadData()
+    {
+        var path = Application.dataPath + "/Resources/items.json";
+
+        if (System.IO.File.Exists(path))
+        {
+            var file = System.IO.File.ReadAllText(path);
+            _savedItems = JsonUtility.FromJson<ItemsFile>(file).data;
+
+            foreach (var item in _savedItems)
+            {
+                CreateListItem(item);
+            }
+        }
+    }
+}
+
+public enum ItemRarity
+{
+    Common,
+    Rare,
+    Unique
+}
+
+[System.Serializable]
+public class ItemData
+{
+    public int id;
+    public string name;
+    public ItemRarity rarity;
+    public int price;
+}
+
+public class ItemsFile
+{
+    public List<ItemData> data;
+}

Assets/Resources/items.json

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+{
+    "data": [
+        {
+            "id": 0,
+            "name": "sword",
+            "rarity": 0,
+            "price": 12
+        },
+        {
+            "id": 0,
+            "name": "pendant",
+            "rarity": 1,
+            "price": 300
+        },
+        {
+            "id": 0,
+            "name": "bloody axe",
+            "rarity": 2,
+            "price": 9000
+        },
+        {
+            "id": 0,
+            "name": "dagger",
+            "rarity": 1,
+            "price": 990
+        },
+        {
+            "id": 0,
+            "name": "wood",
+            "rarity": 0,
+            "price": 5
+        },
+        {
+            "id": 0,
+            "name": "bow",
+            "rarity": 0,
+            "price": 100
+        },
+        {
+            "id": 0,
+            "name": "arrow",
+            "rarity": 0,
+            "price": 3
+        }
+    ]
+}