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using UnityEngine;

using System.Collections.Generic;

using System.Linq;

namespace NodeEditorFramework.Standard

{

[Node (false, "Example/Flow Node")]

public class FlowNode : Node

{

public const string ID = "flowNode";

public override string GetID { get { return ID; } }

public override string Title { get { return "Flow Node"; } }

public override Vector2 DefaultSize { get { return new Vector2 (200, 180); } }

[ConnectionKnob("Flow In", Direction.In, "Flow", NodeSide.Left, 10)]

public ConnectionKnob flowIn;

[ConnectionKnob("Flow Out", Direction.Out, "Flow", NodeSide.Right, 10)]

public ConnectionKnob flowOut;

[ValueConnectionKnob("Input", Direction.In, "Float")]

public ValueConnectionKnob inputKnob;

[ValueConnectionKnob("Output", Direction.Out, "Float")]

public ValueConnectionKnob outputKnob;

public override void NodeGUI ()

{

// Display Float connections

GUILayout.BeginHorizontal ();

inputKnob.DisplayLayout ();

outputKnob.DisplayLayout ();

GUILayout.EndHorizontal ();

// Get adjacent flow elements

Node flowSource = flowIn.connected ()? flowIn.connections[0].body : null;

List<Node> flowTargets = flowOut.connections.Select ((ConnectionKnob input) => input.body).ToList ();

// Display adjacent flow elements

GUILayout.Label ("Flow Source: " + (flowSource != null? flowSource.name : "null"));

GUILayout.Label ("Flow Targets:");

foreach (Node flowTarget in flowTargets)

GUILayout.Label ("-> " + flowTarget.name);

}

public override bool Calculate ()

{

outputKnob.SetValue<float> (inputKnob.GetValue<float> () * 5);

return true;

}

}

// Flow connection visual style

public class FlowConnection : ConnectionKnobStyle

{

public override string Identifier { get { return "Flow"; } }

public override Color Color { get { return Color.red; } }

}

}