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// Emacs style mode select   -*- C++ -*-

//-----------------------------------------------------------------------------

//

// $Id:$

//

// Copyright (C) 1993-1996 by id Software, Inc.

//

// This source is available for distribution and/or modification

// only under the terms of the DOOM Source Code License as

// published by id Software. All rights reserved.

//

// The source is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License

// for more details.

//

// 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 "doomtype.h"

// Some global defines, that configure the game.

#include "doomdef.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

};

// A single Vertex.

typedef struct

{

  short		x;

  short		y;

} 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];

  // Front sector, towards viewer.

  short		sector;

} mapsidedef_t;

// A LineDef, as used for editing, and as input

// to the BSP builder.

typedef struct

{

  short		v1;

  short		v2;

  short		flags;

  short		special;

  short		tag;

  // sidenum[1] will be -1 if one sided

  short		sidenum[2];

} maplinedef_t;

//

// LineDef attributes.

//

// Solid, is an obstacle.

#define ML_BLOCKING		1

// Blocks monsters only.

#define ML_BLOCKMONSTERS	2

// Backside will not be present at all

//  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 allways 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

// Sector definition, from editing.

typedef	struct

{

  short		floorheight;

  short		ceilingheight;

  char		floorpic[8];

  char		ceilingpic[8];

  short		lightlevel;

  short		special;

  short		tag;

} mapsector_t;

// SubSector, as generated by BSP.

typedef struct

{

  short		numsegs;

  // Index of first one, segs are stored sequentially.

  short		firstseg;

} mapsubsector_t;

// LineSeg, generated by splitting LineDefs

// using partition lines selected by BSP builder.

typedef struct

{

  short		v1;

  short		v2;

  short		angle;

  short		linedef;

  short		side;

  short		offset;

} mapseg_t;

// BSP node structure.

// Indicate a leaf.

#define	NF_SUBSECTOR	0x8000

typedef struct

{

  // Partition line from (x,y) to x+dx,y+dy)

  short		x;

  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];

} 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;

} mapthing_t;

#endif			// __DOOMDATA__

//-----------------------------------------------------------------------------

//

// $Log:$

//

//-----------------------------------------------------------------------------