423 lines
12 KiB
C
423 lines
12 KiB
C
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// Emacs style mode select -*- C++ -*-
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//-----------------------------------------------------------------------------
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//
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// $Id$
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//
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// Copyright (C) 1993-1996 by id Software, Inc.
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// DESCRIPTION:
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// Refresh/rendering module, shared data struct definitions.
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//
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//-----------------------------------------------------------------------------
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#ifndef __R_DEFS__
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#define __R_DEFS__
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// Screenwidth.
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#include "doomdef.h"
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// Some more or less basic data types
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// we depend on.
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#include "m_fixed.h"
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// We rely on the thinker data struct
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// to handle sound origins in sectors.
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#include "d_think.h"
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// SECTORS do store MObjs anyway.
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#include "p_mobj.h"
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#ifdef __GNUG__
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#pragma interface
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#endif
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// Silhouette, needed for clipping Segs (mainly)
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// and sprites representing things.
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#define SIL_NONE 0
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#define SIL_BOTTOM 1
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#define SIL_TOP 2
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#define SIL_BOTH 3
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#define MAXDRAWSEGS 256
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//
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// INTERNAL MAP TYPES
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// used by play and refresh
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//
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//
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// Your plain vanilla vertex.
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// Note: transformed values not buffered locally,
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// like some DOOM-alikes ("wt", "WebView") do.
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//
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typedef struct
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{
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fixed_t x, y;
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} vertex_t;
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// Forward of LineDefs, for Sectors.
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struct line_s;
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// Each sector has a degenmobj_t in its center for sound origin purposes.
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typedef struct
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{
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thinker_t thinker; // not used for anything
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fixed_t x, y, z;
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} degenmobj_t;
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//
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// The SECTORS record, at runtime.
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// Stores things/mobjs.
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//
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typedef struct
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{
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fixed_t floorheight;
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fixed_t ceilingheight;
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int nexttag,firsttag; // killough 1/30/98: improves searches for tags.
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int soundtraversed; // 0 = untraversed, 1,2 = sndlines-1
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mobj_t *soundtarget; // thing that made a sound (or null)
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int blockbox[4]; // mapblock bounding box for height changes
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degenmobj_t soundorg; // origin for any sounds played by the sector
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int validcount; // if == validcount, already checked
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mobj_t *thinglist; // list of mobjs in sector
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/* killough 8/28/98: friction is a sector property, not an mobj property.
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* these fields used to be in mobj_t, but presented performance problems
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* when processed as mobj properties. Fix is to make them sector properties.
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*/
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int friction,movefactor;
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// thinker_t for reversable actions
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void *floordata; // jff 2/22/98 make thinkers on
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void *ceilingdata; // floors, ceilings, lighting,
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void *lightingdata; // independent of one another
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// jff 2/26/98 lockout machinery for stairbuilding
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int stairlock; // -2 on first locked -1 after thinker done 0 normally
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int prevsec; // -1 or number of sector for previous step
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int nextsec; // -1 or number of next step sector
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// killough 3/7/98: support flat heights drawn at another sector's heights
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int heightsec; // other sector, or -1 if no other sector
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int bottommap, midmap, topmap; // killough 4/4/98: dynamic colormaps
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// list of mobjs that are at least partially in the sector
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// thinglist is a subset of touching_thinglist
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struct msecnode_s *touching_thinglist; // phares 3/14/98
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int linecount;
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struct line_s **lines;
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// killough 10/98: support skies coming from sidedefs. Allows scrolling
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// skies and other effects. No "level info" kind of lump is needed,
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// because you can use an arbitrary number of skies per level with this
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// method. This field only applies when skyflatnum is used for floorpic
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// or ceilingpic, because the rest of Doom needs to know which is sky
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// and which isn't, etc.
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int sky;
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// killough 3/7/98: floor and ceiling texture offsets
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fixed_t floor_xoffs, floor_yoffs;
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fixed_t ceiling_xoffs, ceiling_yoffs;
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// killough 4/11/98: support for lightlevels coming from another sector
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int floorlightsec, ceilinglightsec;
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short floorpic;
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short ceilingpic;
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short lightlevel;
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short special;
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short oldspecial; //jff 2/16/98 remembers if sector WAS secret (automap)
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short tag;
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void* specialdata; // ROCKDOOM obsolete
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} sector_t;
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//
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// The SideDef.
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//
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typedef struct
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{
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fixed_t textureoffset; // add this to the calculated texture column
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fixed_t rowoffset; // add this to the calculated texture top
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short toptexture; // Texture indices. We do not maintain names here.
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short bottomtexture;
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short midtexture;
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sector_t* sector; // Sector the SideDef is facing.
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// killough 4/4/98, 4/11/98: highest referencing special linedef's type,
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// or lump number of special effect. Allows texture names to be overloaded
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// for other functions.
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int special;
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} side_t;
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//
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// Move clipping aid for LineDefs.
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//
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typedef enum
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{
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ST_HORIZONTAL,
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ST_VERTICAL,
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ST_POSITIVE,
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ST_NEGATIVE
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} slopetype_t;
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typedef struct line_s
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{
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vertex_t *v1, *v2; // Vertices, from v1 to v2.
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fixed_t dx, dy; // Precalculated v2 - v1 for side checking.
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short flags; // Animation related.
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short special;
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short tag;
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short sidenum[2]; // Visual appearance: SideDefs.
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fixed_t bbox[4]; // A bounding box, for the linedef's extent
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slopetype_t slopetype; // To aid move clipping.
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sector_t *frontsector; // Front and back sector.
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sector_t *backsector;
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int validcount; // if == validcount, already checked
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void *specialdata; // thinker_t for reversable actions
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int tranlump; // killough 4/11/98: translucency filter, -1 == none
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int firsttag,nexttag; // killough 4/17/98: improves searches for tags.
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int r_validcount; // cph: if == gametic, r_flags already done
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enum { // cph:
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RF_TOP_TILE = 1, // Upper texture needs tiling
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RF_MID_TILE = 2, // Mid texture needs tiling
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RF_BOT_TILE = 4, // Lower texture needs tiling
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RF_IGNORE = 8, // Renderer can skip this line
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RF_CLOSED =16, // Line blocks view
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} r_flags;
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} line_t;
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// phares 3/14/98
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//
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// Sector list node showing all sectors an object appears in.
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//
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// There are two threads that flow through these nodes. The first thread
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// starts at touching_thinglist in a sector_t and flows through the m_snext
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// links to find all mobjs that are entirely or partially in the sector.
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// The second thread starts at touching_sectorlist in an mobj_t and flows
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// through the m_tnext links to find all sectors a thing touches. This is
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// useful when applying friction or push effects to sectors. These effects
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// can be done as thinkers that act upon all objects touching their sectors.
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// As an mobj moves through the world, these nodes are created and
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// destroyed, with the links changed appropriately.
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//
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// For the links, NULL means top or end of list.
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typedef struct msecnode_s
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{
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sector_t *m_sector; // a sector containing this object
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struct mobj_s *m_thing; // this object
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struct msecnode_s *m_tprev; // prev msecnode_t for this thing
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struct msecnode_s *m_tnext; // next msecnode_t for this thing
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struct msecnode_s *m_sprev; // prev msecnode_t for this sector
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struct msecnode_s *m_snext; // next msecnode_t for this sector
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boolean visited; // killough 4/4/98, 4/7/98: used in search algorithms
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} msecnode_t;
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//
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// The LineSeg.
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//
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typedef struct
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{
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vertex_t *v1, *v2;
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fixed_t offset;
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angle_t angle;
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side_t* sidedef;
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line_t* linedef;
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boolean miniseg;
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// Sector references.
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// Could be retrieved from linedef, too
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// (but that would be slower -- killough)
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// backsector is NULL for one sided lines
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sector_t *frontsector, *backsector;
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} seg_t;
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//
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// A SubSector.
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// References a Sector.
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// Basically, this is a list of LineSegs,
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// indicating the visible walls that define
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// (all or some) sides of a convex BSP leaf.
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//
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typedef struct subsector_s
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{
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sector_t *sector;
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unsigned short numlines, firstline;
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} subsector_t;
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//
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// BSP node.
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//
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typedef struct
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{
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fixed_t x, y, dx, dy; // Partition line.
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fixed_t bbox[2][4]; // Bounding box for each child.
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unsigned short children[2]; // If NF_SUBSECTOR its a subsector.
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} node_t;
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// posts are runs of non masked source pixels
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typedef struct
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{
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byte topdelta; // -1 is the last post in a column
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byte length; // length data bytes follows
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} post_t;
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// column_t is a list of 0 or more post_t, (byte)-1 terminated
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typedef post_t column_t;
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//
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// OTHER TYPES
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//
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// This could be wider for >8 bit display.
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// Indeed, true color support is posibble
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// precalculating 24bpp lightmap/colormap LUT.
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// from darkening PLAYPAL to all black.
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// Could even us emore than 32 levels.
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typedef byte lighttable_t;
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//
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// Masked 2s linedefs
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//
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typedef struct drawseg_s
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{
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seg_t* curline;
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int x1, x2;
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fixed_t scale1, scale2, scalestep;
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int silhouette; // 0=none, 1=bottom, 2=top, 3=both
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fixed_t bsilheight; // do not clip sprites above this
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fixed_t tsilheight; // do not clip sprites below this
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// Pointers to lists for sprite clipping,
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// all three adjusted so [x1] is first value.
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short *sprtopclip, *sprbottomclip, *maskedtexturecol;
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} drawseg_t;
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//
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// Patches.
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// A patch holds one or more columns.
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// Patches are used for sprites and all masked pictures,
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// and we compose textures from the TEXTURE1/2 lists
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// of patches.
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//
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typedef struct
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{
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short width, height; // bounding box size
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short leftoffset; // pixels to the left of origin
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short topoffset; // pixels below the origin
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int columnofs[8]; // only [width] used
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} patch_t;
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// proff: Added for OpenGL
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typedef struct
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{
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int width,height;
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int leftoffset,topoffset;
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int lumpnum;
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} patchnum_t;
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//
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// A vissprite_t is a thing that will be drawn during a refresh.
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// i.e. a sprite object that is partly visible.
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//
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typedef struct vissprite_s
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{
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int x1, x2;
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fixed_t gx, gy; // for line side calculation
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fixed_t gz, gzt; // global bottom / top for silhouette clipping
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fixed_t startfrac; // horizontal position of x1
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fixed_t scale;
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fixed_t xiscale; // negative if flipped
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fixed_t texturemid;
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int patch;
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uint_64_t mobjflags;
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// for color translation and shadow draw, maxbright frames as well
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lighttable_t *colormap;
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// killough 3/27/98: height sector for underwater/fake ceiling support
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int heightsec;
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} vissprite_t;
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//
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// Sprites are patches with a special naming convention
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// so they can be recognized by R_InitSprites.
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// The base name is NNNNFx or NNNNFxFx, with
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// x indicating the rotation, x = 0, 1-7.
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// The sprite and frame specified by a thing_t
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// is range checked at run time.
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// A sprite is a patch_t that is assumed to represent
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// a three dimensional object and may have multiple
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// rotations pre drawn.
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// Horizontal flipping is used to save space,
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// thus NNNNF2F5 defines a mirrored patch.
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// Some sprites will only have one picture used
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// for all views: NNNNF0
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//
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typedef struct
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{
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// If false use 0 for any position.
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// Note: as eight entries are available,
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// we might as well insert the same name eight times.
|
||
|
|
boolean rotate;
|
||
|
|
|
||
|
|
// Lump to use for view angles 0-7.
|
||
|
|
short lump[8];
|
||
|
|
|
||
|
|
// Flip bit (1 = flip) to use for view angles 0-7.
|
||
|
|
byte flip[8];
|
||
|
|
|
||
|
|
} spriteframe_t;
|
||
|
|
|
||
|
|
//
|
||
|
|
// A sprite definition:
|
||
|
|
// a number of animation frames.
|
||
|
|
//
|
||
|
|
|
||
|
|
typedef struct
|
||
|
|
{
|
||
|
|
int numframes;
|
||
|
|
spriteframe_t *spriteframes;
|
||
|
|
} spritedef_t;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Now what is a visplane, anyway?
|
||
|
|
//
|
||
|
|
typedef struct visplane
|
||
|
|
{
|
||
|
|
struct visplane *next; // Next visplane in hash chain -- killough
|
||
|
|
int picnum, lightlevel, minx, maxx;
|
||
|
|
fixed_t height;
|
||
|
|
fixed_t xoffs, yoffs; // killough 2/28/98: Support scrolling flats
|
||
|
|
unsigned short pad1; // leave pads for [minx-1]/[maxx+1]
|
||
|
|
unsigned short top[SCREENWIDTH];
|
||
|
|
unsigned short pad2, pad3; // killough 2/8/98, 4/25/98
|
||
|
|
unsigned short bottom[SCREENWIDTH];
|
||
|
|
unsigned short pad4;
|
||
|
|
} visplane_t;
|
||
|
|
|
||
|
|
#endif
|