LostArtefacts#241 Environment Click Function

Adds a basic surface click function to move a sector's floor or ceiling up or down - this differs from the EMFloor and EMCeiling functions as it doesn't take faces into consideration.

TREnvironmentEditor/Model/EMType.cs

@@ -8,6 +8,7 @@ public enum EMType
         Flood = 2,
         Drain = 3,
         Ceiling = 4,
+        Click = 5,
 
         // Texture types 21-40
         Reface = 21,

TREnvironmentEditor/Model/Types/Surfaces/EMClickFunction.cs

@@ -0,0 +1,46 @@
+using TREnvironmentEditor.Helpers;
+using TRFDControl;
+using TRFDControl.Utilities;
+using TRLevelReader.Model;
+
+namespace TREnvironmentEditor.Model.Types
+{
+    public class EMClickFunction : BaseEMFunction
+    {
+        // This differs from dedicated floor/ceiling functions by only shifting sector values and does not deal with faces.
+        // See example in Masonic room in Aldwych.
+        public EMLocation Location { get; set; }
+        public sbyte? FloorClicks { get; set; }
+        public sbyte? CeilingClicks { get; set; }
+
+        public override void ApplyToLevel(TR2Level level)
+        {
+            FDControl floorData = new FDControl();
+            floorData.ParseFromLevel(level);
+
+            TRRoomSector sector = FDUtilities.GetRoomSector(Location.X, Location.Y, Location.Z, Location.Room, level, floorData);
+            MoveSector(sector);
+        }
+
+        public override void ApplyToLevel(TR3Level level)
+        {
+            FDControl floorData = new FDControl();
+            floorData.ParseFromLevel(level);
+
+            TRRoomSector sector = FDUtilities.GetRoomSector(Location.X, Location.Y, Location.Z, Location.Room, level, floorData);
+            MoveSector(sector);
+        }
+
+        private void MoveSector(TRRoomSector sector)
+        {
+            if (FloorClicks.HasValue)
+            {
+                sector.Floor += FloorClicks.Value;
+            }
+            if (CeilingClicks.HasValue)
+            {
+                sector.Ceiling += CeilingClicks.Value;
+            }
+        }
+    }
+}

TREnvironmentEditor/Parsing/EMConverter.cs

@@ -50,6 +50,8 @@ private object ReadEMType(JObject jo)
                     return JsonConvert.DeserializeObject<EMDrainFunction>(jo.ToString(), _resolver);
                 case EMType.Ceiling:
                     return JsonConvert.DeserializeObject<EMCeilingFunction>(jo.ToString(), _resolver);
+                case EMType.Click:
+                    return JsonConvert.DeserializeObject<EMClickFunction>(jo.ToString(), _resolver);
 
                 // Texture types
                 case EMType.Reface: