From 3d76b2c10f21627090ba96cd6cf269549e869c1c Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Wed, 13 Apr 2022 21:25:11 +0200
Subject: [PATCH] Add `Array Add Unique` node to Visual Scripting

---
 .../Editor/Surface/Archetypes/Collections.cs   | 18 ++++++++++++++++++
 Source/Engine/Visject/VisjectGraph.cpp         |  7 +++++++
 2 files changed, 25 insertions(+)

diff --git a/Source/Editor/Surface/Archetypes/Collections.cs b/Source/Editor/Surface/Archetypes/Collections.cs
index 72f76825c..d09b02a69 100644
--- a/Source/Editor/Surface/Archetypes/Collections.cs
+++ b/Source/Editor/Surface/Archetypes/Collections.cs
@@ -258,6 +258,24 @@ namespace FlaxEditor.Surface.Archetypes
                     NodeElementArchetype.Factory.Output(0, string.Empty, null, 1)
                 }
             },
+            new NodeArchetype
+            {
+                TypeID = 14,
+                Title = "Array Add Unique",
+                Description = "Adds the unique item to the array (to the end). Does nothing it specified item was already added.",
+                Flags = NodeFlags.VisualScriptGraph | NodeFlags.AnimGraph,
+                Size = new Vector2(170, 40),
+                ConnectionsHints = ConnectionsHint.Array,
+                IndependentBoxes = new int[] { 0 },
+                DependentBoxes = new int[] { 1, 2 },
+                DependentBoxFilter = GetArrayItemType,
+                Elements = new[]
+                {
+                    NodeElementArchetype.Factory.Input(0, "Array", true, null, 0),
+                    NodeElementArchetype.Factory.Input(1, "Item", true, typeof(object), 1),
+                    NodeElementArchetype.Factory.Output(0, string.Empty, null, 2)
+                }
+            },
             // first 100 IDs reserved for arrays
         };
     }
diff --git a/Source/Engine/Visject/VisjectGraph.cpp b/Source/Engine/Visject/VisjectGraph.cpp
index df5d56fec..3f6fd60c4 100644
--- a/Source/Engine/Visject/VisjectGraph.cpp
+++ b/Source/Engine/Visject/VisjectGraph.cpp
@@ -1344,6 +1344,13 @@ void VisjectExecutor::ProcessGroupCollections(Box* box, Node* node, Value& value
             array.Reverse();
             value = MoveTemp(v);
             break;
+            // Add Unique
+        case 14:
+            b = node->GetBox(1);
+            ENSURE(b->HasConnection(), TEXT("Missing value to add."));
+            array.AddUnique(eatBox(b->GetParent<Node>(), b->FirstConnection()));
+            value = MoveTemp(v);
+            break;
         }
     }
 }