Add utilities to convert from C# to Lua types

tools/core/Lua.cs

@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2012-2016 Daniele Bartolini and individual contributors.
+ * License: https://github.com/taylor001/crown/blob/master/LICENSE
+ */
+
+using System;
+
+namespace Crown
+{
+	/// <summary>
+	/// Functions to encode C# types to Lua.
+	/// </summary>
+	public static class Lua
+	{
+		public static string FromBool(bool b)
+		{
+			return b == true ? "true" : "false";
+		}
+
+		public static string FromVector2(Vector2 v)
+		{
+			return string.Format("Vector2({0}, {1})", v.x, v.y);
+		}
+
+		public static string FromVector3(Vector3 v)
+		{
+			return string.Format("Vector3({0}, {1}, {2})", v.x, v.y, v.z);
+		}
+
+		public static string FromQuaternion(Quaternion q)
+		{
+			return string.Format("Quaternion.from_elements({0}, {1}, {2}, {3})", q.x, q.y, q.z, q.w);
+		}
+	}
+}