diff --git a/src/g_level.cpp b/src/g_level.cpp
index a2bd300eda..6e4cd6f4ab 100644
--- a/src/g_level.cpp
+++ b/src/g_level.cpp
@@ -87,11 +87,13 @@
 #ifndef STAT
 #define STAT_NEW(map)
 #define STAT_END(newl)
-#define STAT_SAVE(arc, hub)
+#define STAT_READ(png)
+#define STAT_WRITE(f)
 #else
 void STAT_NEW(const char *lev);
 void STAT_END(const char *newl);
-void STAT_SAVE(FArchive &arc, bool hubload);
+void STAT_READ(PNGHandle *png);
+void STAT_WRITE(FILE *f);
 #endif
 
 EXTERN_CVAR (Float, sv_gravity)
@@ -1524,7 +1526,6 @@ void G_SerializeLevel (FArchive &arc, bool hubLoad)
 		}
 	}
 	screen->EndSerialize(arc);
-	STAT_SAVE(arc, hubLoad);
 }
 
 //==========================================================================
@@ -1645,6 +1646,7 @@ void G_WriteSnapshots (FILE *file)
 {
 	unsigned int i;
 
+	STAT_WRITE(file);
 	for (i = 0; i < wadlevelinfos.Size(); i++)
 	{
 		if (wadlevelinfos[i].snapshot)
@@ -1795,6 +1797,7 @@ void G_ReadSnapshots (PNGHandle *png)
 			arc << pnum;
 		}
 	}
+	STAT_READ(png);
 	png->File->ResetFilePtr();
 }
 
diff --git a/src/r_anim.cpp b/src/r_anim.cpp
index c4ed59850a..2ae96f58e1 100644
--- a/src/r_anim.cpp
+++ b/src/r_anim.cpp
@@ -405,6 +405,17 @@ static void R_InitAnimDefs ()
 			{
 				P_ParseAnimatedDoor (sc);
 			}
+			else if (sc.Compare("skyoffset"))
+			{
+				sc.MustGetString ();
+				FTextureID picnum = TexMan.CheckForTexture (sc.String, FTexture::TEX_Wall, texflags);
+				sc.MustGetNumber();
+				if (picnum.Exists())
+				{
+					FTexture *tex = TexMan[picnum];
+					tex->SkyOffset = sc.Number;
+				}
+			}
 			else
 			{
 				sc.ScriptError (NULL);
diff --git a/src/r_defs.h b/src/r_defs.h
index a14a819ce2..f19656afa7 100644
--- a/src/r_defs.h
+++ b/src/r_defs.h
@@ -606,6 +606,11 @@ struct sector_t
 		return lightlevel;
 	}
 
+	secplane_t &GetSecPlane(int pos)
+	{
+		return pos == floor? floorplane:ceilingplane;
+	}
+
 	bool PlaneMoving(int pos);
 
 
diff --git a/src/textures/textures.h b/src/textures/textures.h
index b62da46d80..1bd9282a9a 100644
--- a/src/textures/textures.h
+++ b/src/textures/textures.h
@@ -121,6 +121,7 @@ public:
 							// doing it per patch.
 
 	WORD Rotations;
+	SWORD SkyOffset;
 
 	enum // UseTypes
 	{