Added RandomFloat Universal field type. To use it, change Filed type to "Decimal (random)" and enter a value as 'min max'.

Source/Core/Builder.csproj

@@ -788,6 +788,7 @@
     <Compile Include="Rendering\SurfaceEntryCollection.cs" />
     <Compile Include="Rendering\SurfaceManager.cs" />
     <Compile Include="Rendering\SurfaceUpdate.cs" />
+    <Compile Include="Types\RandomFloatHandler.cs" />
     <Compile Include="Types\RandomIntegerHandler.cs" />
     <Compile Include="Types\ThingClassHandler.cs" />
     <Compile Include="Types\ThingTypeHandler.cs" />

Source/Core/General/General.cs

@@ -1573,6 +1573,11 @@ namespace CodeImp.DoomBuilder
 			return random.Next(min, max);
 		}
 
+		//mxd
+		public static float Random(float min, float max) {
+			return (float)Math.Round(min + (max - min) * random.NextDouble(), 2);
+		}
+		
 		// This returns an element from a collection by index
 		public static T GetByIndex<T>(ICollection<T> collection, int index)
 		{

Source/Core/Types/RandomFloatHandler.cs

@@ -0,0 +1,100 @@
+#region ================== Namespaces
+
+using System;
+using System.Globalization;
+using CodeImp.DoomBuilder.Config;
+
+#endregion
+
+namespace CodeImp.DoomBuilder.Types
+{
+	[TypeHandler(UniversalType.RandomFloat, "Decimal (Random)", true)]
+	internal class RandomFloatHandler : TypeHandler
+	{
+		#region ================== Constants
+
+		#endregion
+
+		#region ================== Variables
+
+		private float value;
+		private bool randomValue;
+		private float min;
+		private float max;
+
+		#endregion
+
+		#region ================== Properties
+
+		#endregion
+
+		#region ================== Methods
+
+		public override void SetupArgument(TypeHandlerAttribute attr, ArgumentInfo arginfo) {
+			base.SetupArgument(attr, arginfo);
+
+			//mxd. We don't want to store this type
+			index = (int)UniversalType.Float;
+		}
+
+		public override void SetupField(TypeHandlerAttribute attr, UniversalFieldInfo fieldinfo) {
+			base.SetupField(attr, fieldinfo);
+
+			//mxd. We don't want to store this type
+			index = (int)UniversalType.Float;
+		}
+
+		public override void SetValue(object value) {
+			float result;
+
+			// Null?
+			if(value == null) {
+				this.value = 0.0f;
+			}
+				// Compatible type?
+			else if((value is int) || (value is float) || (value is bool)) {
+				// Set directly
+				this.value = Convert.ToSingle(value);
+			} else {
+				// Try parsing as string
+				if(float.TryParse(value.ToString(), NumberStyles.Float, CultureInfo.CurrentCulture, out result)) {
+					this.value = result;
+				} else {
+					//mxd. Try to parse value as random range
+					string[] parts = value.ToString().Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
+
+					if(parts.Length == 2) {
+						if(float.TryParse(parts[0], NumberStyles.Float, CultureInfo.CurrentCulture, out min) &&
+						   float.TryParse(parts[1], NumberStyles.Float, CultureInfo.CurrentCulture, out max)) {
+							randomValue = (min != max);
+
+							if(min == max)
+								this.value = min;
+							else if(min > max)
+								General.Swap(ref min, ref max);
+						}
+					}
+
+					this.value = 0.0f;
+				}
+			}
+		}
+
+		public override object GetValue() {
+			if(randomValue)	return General.Random(min, max); //mxd
+			return this.value;
+		}
+
+		public override int GetIntValue() {
+			if(randomValue)	return (int)General.Random(min, max); //mxd
+			return (int)this.value;
+		}
+
+		public override string GetStringValue() {
+			if(randomValue) return General.Random(min, max).ToString(); //mxd
+			return this.value.ToString();
+		}
+
+		#endregion
+	}
+}

Source/Core/Types/UniversalType.cs

@@ -42,6 +42,7 @@ namespace CodeImp.DoomBuilder.Types
 		AngleDegreesFloat = 17,
 		ThingType = 18,
 		ThingClass = 19,
-		RandomInteger = 20 //mxd
+		RandomInteger = 20, //mxd
+		RandomFloat = 21 //mxd
 	}
 }