diff --git a/KeepersCompound.LGS/Extensions.cs b/KeepersCompound.LGS/Extensions.cs
index 078e5a9..9d30ca7 100644
--- a/KeepersCompound.LGS/Extensions.cs
+++ b/KeepersCompound.LGS/Extensions.cs
@@ -1,4 +1,3 @@
-using System.IO;
 using System.Numerics;
 using System.Text;
 
@@ -12,16 +11,37 @@ public static class Extensions
         return raw * 360 / (ushort.MaxValue + 1);
     }
 
+    public static void WriteRotation(this BinaryWriter writer, Vector3 rotation)
+    {
+        var raw = rotation * (ushort.MaxValue + 1) / 360;
+        writer.Write((ushort)raw.X);
+        writer.Write((ushort)raw.Y);
+        writer.Write((ushort)raw.Z);
+    }
+
     public static Vector3 ReadVec3(this BinaryReader reader)
     {
         return new Vector3(reader.ReadSingle(), reader.ReadSingle(), reader.ReadSingle());
     }
 
+    public static void WriteVec3(this BinaryWriter writer, Vector3 vec)
+    {
+        writer.Write(vec.X);
+        writer.Write(vec.Y);
+        writer.Write(vec.Z);
+    }
+
     public static Vector2 ReadVec2(this BinaryReader reader)
     {
         return new Vector2(reader.ReadSingle(), reader.ReadSingle());
     }
 
+    public static void WriteVec2(this BinaryWriter writer, Vector2 vec)
+    {
+        writer.Write(vec.X);
+        writer.Write(vec.Y);
+    }
+
     public static string ReadNullString(this BinaryReader reader, int length)
     {
         var tmpName = Encoding.UTF8.GetString(reader.ReadBytes(length));
@@ -29,4 +49,12 @@ public static class Extensions
         if (idx >= 0) tmpName = tmpName[..idx];
         return tmpName;
     }
+
+    public static void WriteNullString(this BinaryWriter writer, string nullString, int length)
+    {
+        var writeBytes = new byte[length];
+        var stringBytes = Encoding.UTF8.GetBytes(nullString);
+        stringBytes[..Math.Min(length, stringBytes.Length)].CopyTo(writeBytes, 0);
+        writer.Write(writeBytes);
+    }
 }