From d237e1529b664f95465443bd05b1b33ce93f8958 Mon Sep 17 00:00:00 2001
From: Thor Brigsted <thorbrigsted@gmail.com>
Date: Fri, 22 Sep 2017 12:15:37 +0200
Subject: [PATCH] Fixed open empty NodeGraph

---
 Scripts/NodeGraph.cs | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/Scripts/NodeGraph.cs b/Scripts/NodeGraph.cs
index 863ad36..ca76749 100644
--- a/Scripts/NodeGraph.cs
+++ b/Scripts/NodeGraph.cs
@@ -72,16 +72,24 @@ public class NodeGraph {
 
     public static NodeGraph Deserialize(string json) {
         NodeGraph nodeGraph = JsonUtility.FromJson<NodeGraph>(json);
-        for (int i = 0; i < nodeGraph.s_nodes.Length; i++) {
-            NodeTyper tempNode = new NodeTyper();
-            JsonUtility.FromJsonOverwrite(nodeGraph.s_nodes[i],tempNode);
-            //Node node = nodeGraph.AddNode(tempNode.nodeType);
-            Type type = Type.GetType(tempNode.nodeType);
-            Node node = JsonUtility.FromJson(nodeGraph.s_nodes[i], type) as Node;
-            nodeGraph.AddNode(node);
+
+        //If we are trying to open a newly created nodegraph, it will be empty
+        if (nodeGraph == null) nodeGraph = new NodeGraph();
+        if (nodeGraph.s_nodes != null) {
+
+            for (int i = 0; i < nodeGraph.s_nodes.Length; i++) {
+                NodeTyper tempNode = new NodeTyper();
+                JsonUtility.FromJsonOverwrite(nodeGraph.s_nodes[i], tempNode);
+                //Node node = nodeGraph.AddNode(tempNode.nodeType);
+                Type type = Type.GetType(tempNode.nodeType);
+                Node node = JsonUtility.FromJson(nodeGraph.s_nodes[i], type) as Node;
+                nodeGraph.AddNode(node);
+            }
         }
-        for (int i = 0; i < nodeGraph.nodes.Count; i++) {
-            nodeGraph.nodes[i].FinalizeDeserialization();
+        if (nodeGraph.nodes != null){
+            for (int i = 0; i < nodeGraph.nodes.Count; i++) {
+                nodeGraph.nodes[i].FinalizeDeserialization();
+            }
         }
         return nodeGraph;
     }