create VmcExtKey and use it in Marionette

Marionette.cs

@@ -72,7 +72,7 @@ namespace godotVmcSharp
                     new VmcExtCon(m);
                     break;
                 case "/VMC/Ext/Key":
-                    KeyInput(m.Data);
+                    new VmcExtKey(m);
                     break;
                 case "/VMC/Ext/Midi/Note":
                     MidiNote(m.Data);
@@ -106,36 +106,6 @@ namespace godotVmcSharp
                     break;
             }
         }
-        private void KeyInput(List<godotOscSharp.OscArgument> data)
-        {
-            var addr = "/VMC/Ext/Key";
-            if (data[0].Type != 'i')
-            {
-                GD.Print(InvalidArgumentType.GetErrorString(addr, "active", 'i', data[0].Type));
-                return;
-            }
-            if (data[1].Type != 's')
-            {
-                GD.Print(InvalidArgumentType.GetErrorString(addr, "name", 's', data[1].Type));
-                return;
-            }
-            if (data[2].Type != 'i')
-            {
-                GD.Print(InvalidArgumentType.GetErrorString(addr, "keycode", 'i', data[2].Type));
-            }
-            switch ((int)data[0].Value)
-            {
-                case 0:
-                    GD.Print($"Key {(string)data[1].Value} ({(int)data[2].Value}) is released");
-                    break;
-                case 1:
-                    GD.Print($"Key {(string)data[1].Value} ({(int)data[2].Value}) is pressed");
-                    break;
-                default:
-                    GD.Print($"Invalid value for \"active\" 'i' argument of {addr}. Expected 0 or 1, received {(int)data[0].Value}");
-                    break;
-            }
-        }
         private void MidiNote(List<godotOscSharp.OscArgument> data)
         {
             var addr = "/VMC/Ext/Midi/Note";

VmcMessages/VmcExtKey.cs

@@ -0,0 +1,56 @@
+/*
+    godotVmcSharp
+    Copyright (C) 2023  Cassandra de la Cruz-Munoz
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+    */
+
+using Godot;
+using godotOscSharp;
+
+namespace godotVmcSharp
+{
+    public class VmcExtKey : VmcMessage
+    {
+        public int active { get; }
+        public string name { get; }
+        public int keycode { get; }
+        public VmcExtKey(godotOscSharp.OscMessage m) : base(m.Address)
+        {
+            if (m.Data[0].Type != 'i')
+            {
+                GD.Print(InvalidArgumentType.GetErrorString(addr, "active", 'i', m.Data[0].Type));
+                return;
+            }
+            if (m.Data[1].Type != 's')
+            {
+                GD.Print(InvalidArgumentType.GetErrorString(addr, "name", 's', m.Data[1].Type));
+                return;
+            }
+            if (m.Data[2].Type != 'i')
+            {
+                GD.Print(InvalidArgumentType.GetErrorString(addr, "keycode", 'i', m.Data[2].Type));
+                return;
+            }
+            if ((int)m.Data[0].Value < 0 || (int)m.Data[0].Value > 1)
+            {
+                GD.Print($"Invalid value for \"active\" 'i' argument of {addr}. Expected 0 or 1, received {(int)m.Data[0].Value}");
+                return;
+            }
+            active = (int)m.Data[0].Value;
+            name = (string)m.Data[1].Value;
+            keycode = (int)m.Data[2].Value;
+        }
+    }
+}