LINQ for simpler syntax

Author: Chris Jakeman

Source/RunActivity/Viewer3D/Scenery.cs

@@ -482,14 +482,12 @@ public WorldFile(Viewer viewer, int tileX, int tileZ, bool visible)
                     {
                         // preTestShape for lookup if it is an animated clock shape with subobjects named as clock hands 
                         StaticShape preTestShape = (new StaticShape(viewer, shapeFilePath, worldMatrix, shadowCaster ? ShapeFlags.ShadowCaster : ShapeFlags.None));
-                        var isAnimatedClock = false;
-                        if (preTestShape.SharedShape.Animations != null
-                            && preTestShape.SharedShape.Animations.Count > 0) // Since animations( 0 ) is a valid entry in *.s files
-                                                                              // and is included by MSTSexporter for Blender 2.8+ Release V4.0 or older
-                        {
-                            var animNodes = preTestShape.SharedShape.Animations[0]?.anim_nodes ?? new List<anim_node>();
-                            isAnimatedClock = animNodes.Exists(node => Regex.IsMatch(node.Name, @"^orts_[hmsc]hand_clock", RegexOptions.IgnoreCase));
-                        }
+
+                        // FirstOrDefault() checks for "animations( 0 )" as this is a valid entry in *.s files
+                        // and is included by MSTSexporter for Blender 2.8+ Release V4.0 or older
+                        var animNodes = preTestShape.SharedShape.Animations?.FirstOrDefault()?.anim_nodes ?? new List<anim_node>();
+
+                        var isAnimatedClock = animNodes.Exists(node => Regex.IsMatch(node.Name, @"^orts_[hmsc]hand_clock", RegexOptions.IgnoreCase));
                         if (isAnimatedClock)
                         {
                             sceneryObjects.Add(new AnalogClockShape(viewer, shapeFilePath, worldMatrix, shadowCaster ? ShapeFlags.ShadowCaster : ShapeFlags.None));