Tag Fitlering System (#15)

CHANGELOG.md

 # Changelog
 
+## 2019.3.5
+
+#### Added
+
+- Discover : Tag Filtering System
+
 ## 2019.3.4
 
 This version added the following package dependencies:

Editor/Discover/DiscoverAsset.cs

         [Tooltip("The name of the preference for auto showing at startup, will be ")]
         public string PreferenceName = "Discover";
 
+        [Header("Filter Content")]
+        public FilterMode filterMode = FilterMode.ShowAll;
+        public string Tags = "";
+
+        public enum FilterMode
+        { 
+            ShowAll,
+            IncludeTags,
+            ExcludeTags
+        }
+
         [Header("Content")]
         public string Title = "Welcome!";
         [Multiline]

Editor/Discover/DiscoverWindow.cs

             UpdateDiscoverObjects();
         }
 
+
+        /// <summary>
+        /// Filters object based on asset tags, object tags and FilterMode
+        /// </summary>
+        /// <param name="asset"></param>
+        /// <param name="discoverObject"></param>
+        /// <returns>true to discard, false to keep</returns>
+        static bool FilterDiscoverObject(DiscoverAsset asset, Discover discoverObject)
+        {
+            string[] assetTags = asset.Tags.Split(' ');
+            string[] objectTags = discoverObject.Tags.Split(' ');
+
+            switch(asset.filterMode)
+            {
+                case DiscoverAsset.FilterMode.ShowAll: return false;
+                case DiscoverAsset.FilterMode.IncludeTags:
+                    return !assetTags.Intersect(objectTags).Any();
+                case DiscoverAsset.FilterMode.ExcludeTags:
+                    return assetTags.Intersect(objectTags).Any();
+            }
+            return false;
+        }
+
         void UpdateDiscoverObjects(bool clear = false)
         {
             if (discoverObjects == null)
             // Add new ones
             foreach (var item in newOnes)
             {
+                // Apply Filter
+                if (FilterDiscoverObject(discoverAsset, item))
+                    continue;
+
                 if (!discoverObjects.ContainsKey(item.Category))
                 {
                     discoverObjects.Add(item.Category, new List<Discover>());

Runtime/Discover/Discover.cs

     public GameObjectToggle[] ObjectsToToggle = new GameObjectToggle[0];
     [Multiline]
     public string Description = "Some Description of the Component\n\nCan be set as multiple lines.";
+    public string Tags = "";
     public int Priority = 0;
     public DiscoverSection[] Sections = new DiscoverSection[0];