1 files changed, 422 insertions, 0 deletions

diff --git a/apps/plugins/doom/r_defs.h b/apps/plugins/doom/r_defs.h
new file mode 100644
index 0000000000..a3bd5cdf33
--- /dev/null
+++ b/apps/plugins/doom/r_defs.h
@@ -0,0 +1,422 @@
+// Emacs style mode select   -*- C++ -*-
+//-----------------------------------------------------------------------------
+//
+// $Id$
+//
+// Copyright (C) 1993-1996 by id Software, Inc.
+//
+// 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.
+//
+// DESCRIPTION:
+//      Refresh/rendering module, shared data struct definitions.
+//
+//-----------------------------------------------------------------------------
+
+#ifndef __R_DEFS__
+#define __R_DEFS__
+
+// Screenwidth.
+#include "doomdef.h"
+
+// Some more or less basic data types
+// we depend on.
+#include "m_fixed.h"
+
+// We rely on the thinker data struct
+// to handle sound origins in sectors.
+#include "d_think.h"
+// SECTORS do store MObjs anyway.
+#include "p_mobj.h"
+
+#ifdef __GNUG__
+#pragma interface
+#endif
+
+// Silhouette, needed for clipping Segs (mainly)
+// and sprites representing things.
+#define SIL_NONE  0
+#define SIL_BOTTOM  1
+#define SIL_TOP   2
+#define SIL_BOTH  3
+
+#define MAXDRAWSEGS  256
+
+//
+// INTERNAL MAP TYPES
+//  used by play and refresh
+//
+
+//
+// Your plain vanilla vertex.
+// Note: transformed values not buffered locally,
+// like some DOOM-alikes ("wt", "WebView") do.
+//
+typedef struct
+{
+   fixed_t x, y;
+} vertex_t;
+
+
+// Forward of LineDefs, for Sectors.
+struct line_s;
+
+// Each sector has a degenmobj_t in its center for sound origin purposes.
+typedef struct
+{
+   thinker_t thinker;  // not used for anything
+   fixed_t x, y, z;
+} degenmobj_t;
+
+//
+// The SECTORS record, at runtime.
+// Stores things/mobjs.
+//
+
+typedef struct
+{
+   fixed_t floorheight;
+   fixed_t ceilingheight;
+   int nexttag,firsttag;  // killough 1/30/98: improves searches for tags.
+   int soundtraversed;    // 0 = untraversed, 1,2 = sndlines-1
+   mobj_t *soundtarget;   // thing that made a sound (or null)
+   int blockbox[4];       // mapblock bounding box for height changes
+   degenmobj_t soundorg;  // origin for any sounds played by the sector
+   int validcount;        // if == validcount, already checked
+   mobj_t *thinglist;     // list of mobjs in sector
+
+   /* killough 8/28/98: friction is a sector property, not an mobj property.
+    * these fields used to be in mobj_t, but presented performance problems
+    * when processed as mobj properties. Fix is to make them sector properties.
+    */
+   int friction,movefactor;
+
+   // thinker_t for reversable actions
+   void *floordata;    // jff 2/22/98 make thinkers on
+   void *ceilingdata;  // floors, ceilings, lighting,
+   void *lightingdata; // independent of one another
+
+   // jff 2/26/98 lockout machinery for stairbuilding
+   int stairlock;   // -2 on first locked -1 after thinker done 0 normally
+   int prevsec;     // -1 or number of sector for previous step
+   int nextsec;     // -1 or number of next step sector
+
+   // killough 3/7/98: support flat heights drawn at another sector's heights
+   int heightsec;    // other sector, or -1 if no other sector
+
+   int bottommap, midmap, topmap; // killough 4/4/98: dynamic colormaps
+
+   // list of mobjs that are at least partially in the sector
+   // thinglist is a subset of touching_thinglist
+   struct msecnode_s *touching_thinglist;               // phares 3/14/98
+
+   int linecount;
+   struct line_s **lines;
+
+   // killough 10/98: support skies coming from sidedefs. Allows scrolling
+   // skies and other effects. No "level info" kind of lump is needed,
+   // because you can use an arbitrary number of skies per level with this
+   // method. This field only applies when skyflatnum is used for floorpic
+   // or ceilingpic, because the rest of Doom needs to know which is sky
+   // and which isn't, etc.
+
+   int sky;
+
+   // killough 3/7/98: floor and ceiling texture offsets
+   fixed_t   floor_xoffs,   floor_yoffs;
+   fixed_t ceiling_xoffs, ceiling_yoffs;
+
+   // killough 4/11/98: support for lightlevels coming from another sector
+   int floorlightsec, ceilinglightsec;
+
+   short floorpic;
+   short ceilingpic;
+   short lightlevel;
+   short special;
+   short oldspecial;      //jff 2/16/98 remembers if sector WAS secret (automap)
+   short tag;
+   void* specialdata; // ROCKDOOM obsolete
+} sector_t;
+
+//
+// The SideDef.
+//
+
+typedef struct
+{
+   fixed_t textureoffset; // add this to the calculated texture column
+   fixed_t rowoffset;     // add this to the calculated texture top
+   short toptexture;      // Texture indices. We do not maintain names here.
+   short bottomtexture;
+   short midtexture;
+   sector_t* sector;      // Sector the SideDef is facing.
+
+   // killough 4/4/98, 4/11/98: highest referencing special linedef's type,
+   // or lump number of special effect. Allows texture names to be overloaded
+   // for other functions.
+
+   int special;
+
+} side_t;
+
+//
+// Move clipping aid for LineDefs.
+//
+typedef enum
+{
+   ST_HORIZONTAL,
+   ST_VERTICAL,
+   ST_POSITIVE,
+   ST_NEGATIVE
+} slopetype_t;
+
+typedef struct line_s
+{
+   vertex_t *v1, *v2;     // Vertices, from v1 to v2.
+   fixed_t dx, dy;        // Precalculated v2 - v1 for side checking.
+   short flags;           // Animation related.
+   short special;
+   short tag;
+   short sidenum[2];      // Visual appearance: SideDefs.
+   fixed_t bbox[4];       // A bounding box, for the linedef's extent
+   slopetype_t slopetype; // To aid move clipping.
+   sector_t *frontsector; // Front and back sector.
+   sector_t *backsector;
+   int validcount;        // if == validcount, already checked
+   void *specialdata;     // thinker_t for reversable actions
+   int tranlump;          // killough 4/11/98: translucency filter, -1 == none
+   int firsttag,nexttag;  // killough 4/17/98: improves searches for tags.
+   int r_validcount;      // cph: if == gametic, r_flags already done
+   enum {                 // cph:
+      RF_TOP_TILE  = 1,     // Upper texture needs tiling
+      RF_MID_TILE = 2,     // Mid texture needs tiling
+      RF_BOT_TILE = 4,     // Lower texture needs tiling
+      RF_IGNORE   = 8,     // Renderer can skip this line
+      RF_CLOSED   =16,     // Line blocks view
+   } r_flags;
+} line_t;
+
+// phares 3/14/98
+//
+// Sector list node showing all sectors an object appears in.
+//
+// There are two threads that flow through these nodes. The first thread
+// starts at touching_thinglist in a sector_t and flows through the m_snext
+// links to find all mobjs that are entirely or partially in the sector.
+// The second thread starts at touching_sectorlist in an mobj_t and flows
+// through the m_tnext links to find all sectors a thing touches. This is
+// useful when applying friction or push effects to sectors. These effects
+// can be done as thinkers that act upon all objects touching their sectors.
+// As an mobj moves through the world, these nodes are created and
+// destroyed, with the links changed appropriately.
+//
+// For the links, NULL means top or end of list.
+
+typedef struct msecnode_s
+{
+   sector_t          *m_sector; // a sector containing this object
+   struct mobj_s     *m_thing;  // this object
+   struct msecnode_s *m_tprev;  // prev msecnode_t for this thing
+   struct msecnode_s *m_tnext;  // next msecnode_t for this thing
+   struct msecnode_s *m_sprev;  // prev msecnode_t for this sector
+   struct msecnode_s *m_snext;  // next msecnode_t for this sector
+   boolean visited; // killough 4/4/98, 4/7/98: used in search algorithms
+} msecnode_t;
+
+//
+// The LineSeg.
+//
+typedef struct
+{
+   vertex_t *v1, *v2;
+   fixed_t offset;
+   angle_t angle;
+   side_t* sidedef;
+   line_t* linedef;
+
+   boolean   miniseg;
+
+   // Sector references.
+   // Could be retrieved from linedef, too
+   // (but that would be slower -- killough)
+   // backsector is NULL for one sided lines
+
+   sector_t *frontsector, *backsector;
+} seg_t;
+
+//
+// A SubSector.
+// References a Sector.
+// Basically, this is a list of LineSegs,
+//  indicating the visible walls that define
+//  (all or some) sides of a convex BSP leaf.
+//
+
+typedef struct subsector_s
+{
+   sector_t *sector;
+   unsigned short numlines, firstline;
+} subsector_t;
+
+//
+// BSP node.
+//
+typedef struct
+{
+   fixed_t  x,  y, dx, dy;        // Partition line.
+   fixed_t bbox[2][4];            // Bounding box for each child.
+   unsigned short children[2];    // If NF_SUBSECTOR its a subsector.
+} node_t;
+
+// posts are runs of non masked source pixels
+typedef struct
+{
+   byte topdelta; // -1 is the last post in a column
+   byte length;   // length data bytes follows
+} post_t;
+
+// column_t is a list of 0 or more post_t, (byte)-1 terminated
+typedef post_t column_t;
+
+//
+// OTHER TYPES
+//
+
+// This could be wider for >8 bit display.
+// Indeed, true color support is posibble
+//  precalculating 24bpp lightmap/colormap LUT.
+//  from darkening PLAYPAL to all black.
+// Could even us emore than 32 levels.
+typedef byte lighttable_t;
+
+//
+// Masked 2s linedefs
+//
+typedef struct drawseg_s
+{
+   seg_t*  curline;
+   int   x1, x2;
+   fixed_t  scale1, scale2, scalestep;
+   int   silhouette;   // 0=none, 1=bottom, 2=top, 3=both
+   fixed_t  bsilheight;   // do not clip sprites above this
+   fixed_t  tsilheight;   // do not clip sprites below this
+
+   // Pointers to lists for sprite clipping,
+   //  all three adjusted so [x1] is first value.
+   short  *sprtopclip, *sprbottomclip, *maskedtexturecol;
+
+} drawseg_t;
+
+//
+// Patches.
+// A patch holds one or more columns.
+// Patches are used for sprites and all masked pictures,
+// and we compose textures from the TEXTURE1/2 lists
+// of patches.
+//
+
+typedef struct
+{
+   short width, height;  // bounding box size
+   short leftoffset;     // pixels to the left of origin
+   short topoffset;      // pixels below the origin
+   int columnofs[8];     // only [width] used
+} patch_t;
+
+// proff: Added for OpenGL
+typedef struct
+{
+   int width,height;
+   int leftoffset,topoffset;
+   int lumpnum;
+} patchnum_t;
+
+//
+// A vissprite_t is a thing that will be drawn during a refresh.
+// i.e. a sprite object that is partly visible.
+//
+
+typedef struct vissprite_s
+{
+   int x1, x2;
+   fixed_t gx, gy;              // for line side calculation
+   fixed_t gz, gzt;             // global bottom / top for silhouette clipping
+   fixed_t startfrac;           // horizontal position of x1
+   fixed_t scale;
+   fixed_t xiscale;             // negative if flipped
+   fixed_t texturemid;
+   int patch;
+   uint_64_t mobjflags;
+
+   // for color translation and shadow draw, maxbright frames as well
+   lighttable_t *colormap;
+
+   // killough 3/27/98: height sector for underwater/fake ceiling support
+   int heightsec;
+} vissprite_t;
+
+//
+// Sprites are patches with a special naming convention
+//  so they can be recognized by R_InitSprites.
+// The base name is NNNNFx or NNNNFxFx, with
+//  x indicating the rotation, x = 0, 1-7.
+// The sprite and frame specified by a thing_t
+//  is range checked at run time.
+// A sprite is a patch_t that is assumed to represent
+//  a three dimensional object and may have multiple
+//  rotations pre drawn.
+// Horizontal flipping is used to save space,
+//  thus NNNNF2F5 defines a mirrored patch.
+// Some sprites will only have one picture used
+// for all views: NNNNF0
+//
+typedef struct
+{
+   // If false use 0 for any position.
+   // Note: as eight entries are available,
+   //  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