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+/* Emacs style mode select   -*- C++ -*-
+ *-----------------------------------------------------------------------------
+ *
+ *
+ *  PrBoom: a Doom port merged with LxDoom and LSDLDoom
+ *  based on BOOM, a modified and improved DOOM engine
+ *  Copyright (C) 1999 by
+ *  id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
+ *  Copyright (C) 1999-2000 by
+ *  Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
+ *  Copyright 2005, 2006 by
+ *  Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
+ *
+ *  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.
+ *
+ * DESCRIPTION:
+ *  all external data is defined here
+ *  most of the data is loaded into different structures at run time
+ *  some internal structures shared by many modules are here
+ *
+ *-----------------------------------------------------------------------------*/
+
+#ifndef __DOOMDATA__
+#define __DOOMDATA__
+
+// The most basic types we use, portability.
+#include "config.h"
+#include "doomtype.h"
+
+//
+// Map level types.
+// The following data structures define the persistent format
+// used in the lumps of the WAD files.
+//
+
+// Lump order in a map WAD: each map needs a couple of lumps
+// to provide a complete scene geometry description.
+enum {
+  ML_LABEL,             // A separator, name, ExMx or MAPxx
+  ML_THINGS,            // Monsters, items..
+  ML_LINEDEFS,          // LineDefs, from editing
+  ML_SIDEDEFS,          // SideDefs, from editing
+  ML_VERTEXES,          // Vertices, edited and BSP splits generated
+  ML_SEGS,              // LineSegs, from LineDefs split by BSP
+  ML_SSECTORS,          // SubSectors, list of LineSegs
+  ML_NODES,             // BSP nodes
+  ML_SECTORS,           // Sectors, from editing
+  ML_REJECT,            // LUT, sector-sector visibility
+  ML_BLOCKMAP           // LUT, motion clipping, walls/grid element
+};
+
+#ifdef _MSC_VER // proff: This is the same as __attribute__ ((packed)) in GNUC
+#pragma pack(push)
+#pragma pack(1)
+#endif //_MSC_VER
+
+// A single Vertex.
+typedef struct {
+  short x,y;
+} PACKEDATTR mapvertex_t;
+
+// A SideDef, defining the visual appearance of a wall,
+// by setting textures and offsets.
+typedef struct {
+  short textureoffset;
+  short rowoffset;
+  char  toptexture[8];
+  char  bottomtexture[8];
+  char  midtexture[8];
+  short sector;  // Front sector, towards viewer.
+} PACKEDATTR mapsidedef_t;
+
+// A LineDef, as used for editing, and as input to the BSP builder.
+
+typedef struct {
+  unsigned short v1;
+  unsigned short v2;
+  unsigned short flags;
+  short special;
+  short tag;
+  // proff 07/23/2006 - support more than 32768 sidedefs
+  // use the unsigned value and special case the -1
+  // sidenum[1] will be -1 (NO_INDEX) if one sided
+  unsigned short sidenum[2];
+} PACKEDATTR maplinedef_t;
+
+#define NO_INDEX ((unsigned short)-1)
+
+//
+// LineDef attributes.
+//
+
+// Solid, is an obstacle.
+#define ML_BLOCKING             1
+
+// Blocks monsters only.
+#define ML_BLOCKMONSTERS        2
+
+// Backside will not be drawn if not two sided.
+#define ML_TWOSIDED             4
+
+// If a texture is pegged, the texture will have
+// the end exposed to air held constant at the
+// top or bottom of the texture (stairs or pulled
+// down things) and will move with a height change
+// of one of the neighbor sectors.
+// Unpegged textures always have the first row of
+// the texture at the top pixel of the line for both
+// top and bottom textures (use next to windows).
+
+// upper texture unpegged
+#define ML_DONTPEGTOP           8
+
+// lower texture unpegged
+#define ML_DONTPEGBOTTOM        16
+
+// In AutoMap: don't map as two sided: IT'S A SECRET!
+#define ML_SECRET               32
+
+// Sound rendering: don't let sound cross two of these.
+#define ML_SOUNDBLOCK           64
+
+// Don't draw on the automap at all.
+#define ML_DONTDRAW             128
+
+// Set if already seen, thus drawn in automap.
+#define ML_MAPPED               256
+
+//jff 3/21/98 Set if line absorbs use by player
+//allow multiple push/switch triggers to be used on one push
+#define ML_PASSUSE      512
+
+// Sector definition, from editing.
+typedef struct {
+  short floorheight;
+  short ceilingheight;
+  char  floorpic[8];
+  char  ceilingpic[8];
+  short lightlevel;
+  short special;
+  short tag;
+} PACKEDATTR mapsector_t;
+
+// SubSector, as generated by BSP.
+typedef struct {
+  unsigned short numsegs;
+  unsigned short firstseg;    // Index of first one; segs are stored sequentially.
+} PACKEDATTR mapsubsector_t;
+
+// LineSeg, generated by splitting LineDefs
+// using partition lines selected by BSP builder.
+typedef struct {
+  unsigned short v1;
+  unsigned short v2;
+  short angle;
+  unsigned short linedef;
+  short side;
+  short offset;
+} PACKEDATTR mapseg_t;
+
+// BSP node structure.
+
+// Indicate a leaf.
+#define NF_SUBSECTOR    0x8000
+
+typedef struct {
+  short x;  // Partition line from (x,y) to x+dx,y+dy)
+  short y;
+  short dx;
+  short dy;
+  // Bounding box for each child, clip against view frustum.
+  short bbox[2][4];
+  // If NF_SUBSECTOR its a subsector, else it's a node of another subtree.
+  unsigned short children[2];
+} PACKEDATTR mapnode_t;
+
+// Thing definition, position, orientation and type,
+// plus skill/visibility flags and attributes.
+typedef struct {
+  short x;
+  short y;
+  short angle;
+  short type;
+  short options;
+} PACKEDATTR mapthing_t;
+
+#ifdef _MSC_VER
+#pragma pack(pop)
+#endif //_MSC_VER
+
+#endif // __DOOMDATA__