Added state machine example

Example/ExampleNodeGraph.cs

@@ -1,8 +0,0 @@
-using UnityEngine;
-using System;
-using XNode;
-
-/// <summary> Defines an example nodegraph. </summary>
-[Serializable, CreateAssetMenu(fileName = "ExampleNodeGraph", menuName = "Node Graph/Example")]
-public class ExampleNodeGraph : XNode.NodeGraph {
-}

Example/Nodes/DisplayValue.cs

@@ -1,14 +0,0 @@
-using XNode;
-
-namespace BasicNodes {
-    public class DisplayValue : XNode.Node {
-        protected override void Init() {
-            base.Init();
-            if (!HasPort("input")) AddInstanceInput(typeof(object), ConnectionType.Override ,"input");
-        }
-
-        public override object GetValue(XNode.NodePort port) {
-            return GetInputValue<object>("input");
-        }
-    }
-}

Example/Nodes/Editor/DisplayValueEditor.cs

@@ -1,15 +0,0 @@
-using UnityEditor;
-using XNodeEditor;
-
-namespace BasicNodes {
-    [CustomNodeEditor(typeof(DisplayValue))]
-    public class DisplayValueEditor : NodeEditor {
-
-        public override void OnBodyGUI() {
-            base.OnBodyGUI();
-            NodeEditorGUILayout.PortField(target.GetInputPort("input"));
-            object obj = target.GetValue(null);
-            if (obj != null) EditorGUILayout.LabelField(obj.ToString());
-        }
-    }
-}

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Examples/MathGraph/Editor/MathGraphEditor.cs

@@ -0,0 +1,20 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using XNode.Examples;
+
+namespace XNodeEditor.Examples {
+	[CustomNodeGraphEditor(typeof(MathGraph))]
+	public class MathGraphEditor : NodeGraphEditor {
+
+		/// <summary> 
+		/// Overriding GetNodePath lets you control if and how nodes are categorized.
+	    /// In this example we are sorting out all node types that are not in the XNode.Examples namespace.
+		/// </summary>
+		public override string GetNodePath(System.Type type) {
+			if (type.Namespace == "XNode.Examples.MathNodes") {
+				return base.GetNodePath(type).Replace("X Node/Examples/Math Nodes/", "");
+			} else return null;
+		}
+	}
+}

Examples/MathGraph/Editor/MathGraphEditor.cs.meta

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Examples/MathGraph/MathGraph.cs

@@ -0,0 +1,8 @@
+using System;
+using UnityEngine;
+
+namespace XNode.Examples {
+    /// <summary> Defines an example nodegraph that can be created as an asset in the Project window. </summary>
+    [Serializable, CreateAssetMenu(fileName = "New Math Graph", menuName = "xNode Examples/Math Graph")]
+    public class MathGraph : XNode.NodeGraph { }
+}

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Examples/MathGraph/Nodes/DisplayValue.cs

@@ -0,0 +1,20 @@
+namespace XNode.Examples.MathNodes {
+    
+    public class DisplayValue : XNode.Node {
+        
+        /// <summary> 
+        /// Create an input port that only allows a single connection.
+        /// The backing value is not important, as we are only interested in the input value.
+        /// We are also acceptable of all input types, so any type will do, as long as it is serializable. 
+        /// </summary>
+        [Input(ShowBackingValue.Never, ConnectionType.Override)] public Anything input;
+        
+        /// <summary> Get the value currently plugged in to this node </summary>
+        public object GetValue() {
+            return GetInputValue<object>("input");
+        }
+
+        /// <summary> This class is defined for the sole purpose of being serializable </summary>
+        [System.Serializable] public class Anything {}
+    }
+}

Examples/MathGraph/Nodes/Editor/DisplayValueEditor.cs

@@ -0,0 +1,27 @@
+using UnityEditor;
+using XNode.Examples.MathNodes;
+
+namespace XNodeEditor.Examples {
+
+    /// <summary> 
+    /// NodeEditor functions similarly to the Editor class, only it is xNode specific.
+    /// Custom node editors should have the CustomNodeEditor attribute that defines which node type it is an editor for.
+    /// </summary>
+    [CustomNodeEditor(typeof(DisplayValue))]
+    public class DisplayValueEditor : NodeEditor {
+
+        /// <summary> Called whenever the xNode editor window is updated </summary>
+        public override void OnBodyGUI() {
+            
+            // Draw the default GUI first, so we don't have to do all of that manually.
+            base.OnBodyGUI();
+
+            // `target` points to the node, but it is of type `Node`, so cast it.
+            DisplayValue displayValueNode = target as DisplayValue;
+
+            // Get the value from the node, and display it
+            object obj = displayValueNode.GetValue();
+            if (obj != null) EditorGUILayout.LabelField(obj.ToString());
+        }
+    }
+}

Examples/MathGraph/Nodes/MathNode.cs

@@ -1,6 +1,4 @@
-using XNode;
-
-namespace BasicNodes {
+namespace XNode.Examples.MathNodes {
     [System.Serializable]
     public class MathNode : XNode.Node {
         // Adding [Input] or [Output] is all you need to do to register a field as a valid port on your node 

Examples/MathGraph/Nodes/Vector.cs

@@ -1,7 +1,6 @@
 using UnityEngine;
-using XNode;
 
-namespace BasicNodes {
+namespace XNode.Examples.MathNodes {
     public class Vector : XNode.Node {
         [Input] public float x, y, z;
         [Output] public Vector3 vector;

Examples/StateMachine.meta

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Examples/StateMachine/Editor/StateGraphEditor.cs

@@ -0,0 +1,21 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using XNode.Examples.StateGraph;
+using XNodeEditor;
+
+namespace XNodeEditor.Examples {
+	[CustomNodeGraphEditor(typeof(StateGraph))]
+	public class StateGraphEditor : NodeGraphEditor {
+
+		/// <summary> 
+		/// Overriding GetNodePath lets you control if and how nodes are categorized.
+	    /// In this example we are sorting out all node types that are not in the XNode.Examples namespace.
+		/// </summary>
+		public override string GetNodePath(System.Type type) {
+			if (type.Namespace == "XNode.Examples.StateGraph") {
+				return base.GetNodePath(type).Replace("X Node/Examples/State Graph/", "");
+			} else return null;
+		}
+	}
+}

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+    - exit
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Examples/StateMachine/Nodes/Editor/StateNodeEditor.cs

@@ -0,0 +1,30 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEditor;
+using UnityEngine;
+using XNode.Examples.StateGraph;
+
+namespace XNodeEditor.Examples {
+	[CustomNodeEditor(typeof(StateNode))]
+	public class StateNodeEditor : NodeEditor {
+
+		public override void OnHeaderGUI() {
+			GUI.color = Color.white;
+			StateNode node = target as StateNode;
+			StateGraph graph = node.graph as StateGraph;
+			if (graph.current == node) GUI.color = Color.blue;
+			string title = target.name;
+			GUILayout.Label(title, NodeEditorResources.styles.nodeHeader, GUILayout.Height(30));
+			GUI.color = Color.white;
+		}
+
+		public override void OnBodyGUI() {
+			base.OnBodyGUI();
+			StateNode node = target as StateNode;
+			StateGraph graph = node.graph as StateGraph;
+			if (GUILayout.Button("MoveNext Node")) node.MoveNext();
+			if (GUILayout.Button("Continue Graph")) graph.Continue();
+			if (GUILayout.Button("Set as current")) graph.current = node;
+		}
+	}
+}

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Examples/StateMachine/Nodes/StateNode.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace XNode.Examples.StateGraph {
+	public class StateNode : Node {
+
+		[Input] public Empty enter;
+		[Output] public Empty exit;
+
+		public void MoveNext() {
+			StateGraph fmGraph = graph as StateGraph;
+
+			if (fmGraph.current != this) {
+				Debug.LogWarning("Node isn't active");
+				return;
+			}
+
+			NodePort exitPort = GetOutputPort("exit");
+
+			if (!exitPort.IsConnected) {
+				Debug.LogWarning("Node isn't connected");
+				return;
+			}
+
+			StateNode node = exitPort.Connection.node as StateNode;
+			node.OnEnter();
+		}
+
+		public void OnEnter() {
+			StateGraph fmGraph = graph as StateGraph;
+			fmGraph.current = this;
+		}
+
+		[Serializable]
+		public class Empty { }
+	}
+}

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Examples/StateMachine/README.md

@@ -0,0 +1,14 @@
+[![Discord](https://img.shields.io/discord/361769369404964864.svg)](https://discord.gg/qgPrHv4)
+[![GitHub issues](https://img.shields.io/github/issues/Siccity/xNode.svg)](https://github.com/Siccity/xNode/issues)
+[![GitHub license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/Siccity/xNode/master/LICENSE.md)
+[![GitHub Wiki](https://img.shields.io/badge/wiki-available-brightgreen.svg)](https://github.com/Siccity/xNode/wiki)
+
+[Go to Downloads](https://github.com/Siccity/xNode/releases)
+
+### xNode State Machine (Example)
+This example project should give you an understanding of how to handle traversing through nodes, one by one.
+The same principle can be applied to dialogue graphs, and other simple decision makers.
+
+
+Join the [Discord](https://discord.gg/qgPrHv4 "Join Discord server") server to leave feedback or get support.
+Feel free to also leave suggestions/requests in the [issues](https://github.com/Siccity/xNode/issues "Go to Issues") page.

Examples/StateMachine/StateGraph.cs

@@ -0,0 +1,16 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace XNode.Examples.StateGraph {
+	[CreateAssetMenu(fileName = "New State Graph", menuName = "xNode Examples/State Graph")]
+	public class StateGraph : NodeGraph {
+
+		// The current "active" node
+		public StateNode current;
+
+		public void Continue() {
+			current.MoveNext();
+		}
+	}
+}

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