Nodes - Added event value cycle node

src/Artemis.Core/Extensions/TypeExtensions.cs

@@ -130,8 +130,11 @@ namespace Artemis.Core
         ///     at all
         /// </summary>
         /// <returns></returns>
-        public static int ScoreCastability(this Type to, Type from)
+        public static int ScoreCastability(this Type to, Type? from)
         {
+            if (from == null)
+                return 0;
+
             if (to == from)
                 return 5;
             if (to.TypeIsNumber() && from.TypeIsNumber())

src/Artemis.Core/VisualScripting/InputPinCollection.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 
@@ -31,4 +32,38 @@ namespace Artemis.Core
 
         #endregion
     }
+
+    public sealed class InputPinCollection : PinCollection
+    {
+        #region Properties & Fields
+
+        public override PinDirection Direction => PinDirection.Input;
+        public override Type Type { get; }
+
+        public new IEnumerable<InputPin> Pins => base.Pins.Cast<InputPin>();
+
+        public IEnumerable Values => Pins.Select(p => p.Value);
+
+        #endregion
+
+        #region Constructors
+
+        internal InputPinCollection(INode node, Type type, string name, int initialCount)
+            : base(node, name, 0)
+        {
+            this.Type = type;
+
+            // Can't do this in the base constructor because the type won't be set yet
+            for (int i = 0; i < initialCount; i++)
+                AddPin();
+        }
+
+        #endregion
+
+        #region Methods
+
+        protected override IPin CreatePin() => new InputPin(Node, Type, string.Empty);
+
+        #endregion
+    }
 }

src/Artemis.Core/VisualScripting/Interfaces/IPin.cs

@@ -22,5 +22,6 @@ namespace Artemis.Core
 
         void ConnectTo(IPin pin);
         void DisconnectFrom(IPin pin);
+        void DisconnectAll();
     }
 }

src/Artemis.Core/VisualScripting/Node.cs

@@ -130,6 +130,14 @@ namespace Artemis.Core
             return pin;
         }
 
+        protected InputPinCollection CreateInputPinCollection(Type type, string name = "", int initialCount = 1)
+        {
+            InputPinCollection pin = new(this, type, name, initialCount);
+            _pinCollections.Add(pin);
+            OnPropertyChanged(nameof(PinCollections));
+            return pin;
+        }
+
         protected OutputPinCollection<T> CreateOutputPinCollection<T>(string name = "", int initialCount = 1)
         {
             OutputPinCollection<T> pin = new(this, name, initialCount);
@@ -138,6 +146,19 @@ namespace Artemis.Core
             return pin;
         }
 
+        protected bool RemovePinCollection(PinCollection pinCollection)
+        {
+            bool isRemoved = _pinCollections.Remove(pinCollection);
+            if (isRemoved)
+            {
+                foreach (IPin pin in pinCollection) 
+                    pin.DisconnectAll();
+                OnPropertyChanged(nameof(PinCollections));
+            }
+
+            return isRemoved;
+        }
+
         public virtual void Initialize(INodeScript script)
         { }