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diff --git a/sectors.h b/sectors.h
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+/*
+
+    viDOOM - level editor for DOOM
+
+    Copyright (C) 2000  Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+    -------------------------------------------------------------------------
+
+    Handles definition and storage of the supported SECTORs
+
+    $Id$
+
+*/
+
+#ifndef VIDOOM_SECTORS_H
+
+#define VIDOOM_SECTORS_H
+
+#include "wad.h"
+#include "gfx.h"
+#include "platgui.h"
+
+/* This is not going to be an ID, so is returned from SelectSector() if it is
+   cancelled.
+*/
+#define SECTOR_NULLID	-666
+
+
+/* Meanings for the flags in the sector styles
+*/
+#define SSTYLE_FACING_IN	0x01
+#define SSTYLE_FACING_OUT	0x02
+#define SSTYLE_LEAVE_PEG	0x04
+#define SSTYLE_UPPER_PEG	0x08
+#define SSTYLE_LOWER_PEG	0x10
+
+
+/* Add a new class of sector.  Set hexen TRUE for a HEXEN sector.
+*/
+void	SectorNewClass(int hexen, char *class);
+
+
+/* Add the named type to the supplied class with the ID.
+   Set hexen TRUE for a HEXEN sector.
+*/
+void	SectorAdd(int hexen,char *class,int id,
+			    char *long_name, char *short_name);
+
+
+/* Select the ID type for a sector.  Returns SECTOR_NULLID if cancelled.
+   Set hexen TRUE for a HEXEN sector.
+*/
+int	SelectSector(int hexen);
+
+
+/* Returns the short name of a sector type
+*/
+char	*SectorName(int hexen, int id);
+
+
+/* Define a linedef style
+*/
+void	AddSectorStyle(char *name, int flags,
+		       DirName upper,DirName middle,DirName lower,
+		       DirName floor,DirName ceiling);
+
+/* Return the number of defined sector styles
+*/
+int	NoSectorStyles(void);
+
+/* Choose a sector style.  TRUE is accepted, FALSE cancelled.
+*/
+int	ChooseSectorStyle(int *flags,
+			  DirName upper,DirName middle,DirName lower,
+			  DirName floor,DirName ceiling);
+
+
+#endif
+
+
+/* END OF FILE */