rockbox - My Rockbox tree

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author	Franklin Wei <me@fwei.tk>	2017-07-27 00:00:51 -0400
committer	Franklin Wei <me@fwei.tk>	2017-07-27 00:03:09 -0400
commit	5a5bd0d6d1e77b1d94c18e3d4ce1a52b05dc2967 (patch)
tree	4da596c5a693e3043e3bcf6eabd1bcc1b4cf3236 /apps/plugins/lua/lua.make
parent	56dd2eaaf2ccee6f682d30e29b3b6babe1dc49ef (diff)
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Fix arm memset() handling of negative arguments

This fixes the sgt-mines plugin. Same issue was present in an old glibc as well: https://sourceware.org/git/?p=glibc.git;a=commitdiff;h=a7ed1adbecb6aac49af75aae3b3498798cf63abc

Diffstat (limited to 'apps/plugins/lua/lua.make')

0 files changed, 0 insertions, 0 deletions

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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
 *
 *  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:
 *   -Loads and initializes texture and flat animation sequences
 *   -Implements utility functions for all linedef/sector special handlers
 *   -Dispatches walkover and gun line triggers
 *   -Initializes and implements special sector types
 *   -Implements donut linedef triggers
 *   -Initializes and implements BOOM linedef triggers for
 *     Scrollers/Conveyors
 *     Friction
 *     Wind/Current
 *
 *-----------------------------------------------------------------------------*/

#include "doomstat.h"
#include "p_spec.h"
#include "p_tick.h"
#include "p_setup.h"
#include "m_random.h"
#include "d_englsh.h"
#include "m_argv.h"
#include "w_wad.h"
#include "r_main.h"
#include "p_maputl.h"
#include "p_map.h"
#include "g_game.h"
#include "p_inter.h"
#include "m_swap.h"
#include "s_sound.h"
#include "sounds.h"
#include "m_bbox.h"                                         // phares 3/20/98
//#include "d_deh.h"
#include "r_plane.h"
#include "i_system.h"
#include "rockmacros.h"
//
// Animating textures and planes
// There is another anim_t used in wi_stuff, unrelated.
//
typedef struct
{
   boolean     istexture;
   int         picnum;
   int         basepic;
   int         numpics;
   int         speed;

} anim_t;

//
//      source animation definition
//
//
#ifdef _MSC_VER // proff: This is the same as __attribute__ ((packed)) in GNUC
#pragma pack(push)
#pragma pack(1)
#endif //_MSC_VER

#if defined(__MWERKS__)
#pragma options align=packed
#endif

typedef struct
{
   signed char istexture; //jff 3/23/98 make char for comparison // cph - make signed
   char        endname[9];           //  if false, it is a flat
   char        startname[9];
   int         speed;
} PACKEDATTR animdef_t; //jff 3/23/98 pack to read from memory

#define MAXANIMS 32                   // no longer a strict limit -- killough

static anim_t*  lastanim;
static anim_t*  anims;                // new structure w/o limits -- killough
static size_t maxanims;

// killough 3/7/98: Initialize generalized scrolling
static void P_SpawnScrollers(void);

static void P_SpawnFriction(void);    // phares 3/16/98
static void P_SpawnPushers(void);     // phares 3/20/98

extern int allow_pushers;
extern int variable_friction;         // phares 3/20/98

//
// P_InitPicAnims
//
// Load the table of animation definitions, checking for existence of
// the start and end of each frame. If the start doesn't exist the sequence
// is skipped, if the last doesn't exist, BOOM exits.
//
// Wall/Flat animation sequences, defined by name of first and last frame,
// The full animation sequence is given using all lumps between the start
// and end entry, in the order found in the WAD file.
//
// This routine modified to read its data from a predefined lump or
// PWAD lump called ANIMATED rather than a static table in this module to
// allow wad designers to insert or modify animation sequences.
//
// Lump format is an array of byte packed animdef_t structures, terminated
// by a structure with istexture == -1. The lump can be generated from a
// text source file using SWANTBLS.EXE, distributed with the BOOM utils.
// The standard list of switches and animations is contained in the example
// source text file DEFSWANI.DAT also in the BOOM util distribution.
//
//
void P_InitPicAnims (void)
{
   int         i;
   const animdef_t *animdefs; //jff 3/23/98 pointer to animation lump
   int         lump = W_GetNumForName("ANIMATED"); // cph - new wad lump handling
   //  Init animation

   //jff 3/23/98 read from predefined or wad lump instead of table
   animdefs = (const animdef_t *)W_CacheLumpNum(lump);

   lastanim = anims;
   for (i=0 ; animdefs[i].istexture != -1 ; i++)
   {
      // 1/11/98 killough -- removed limit by array-doubling
      if (lastanim >= anims + maxanims)
      {
         size_t newmax = maxanims ? maxanims*2 : MAXANIMS;
         anims = realloc(anims, newmax*sizeof(*anims));   // killough
         lastanim = anims + maxanims;
         maxanims = newmax;
      }

      if (animdefs[i].istexture)
      {
         // different episode ?
         if (R_CheckTextureNumForName(animdefs[i].startname) == -1)
            continue;

         lastanim->picnum = R_TextureNumForName (animdefs[i].endname);
         lastanim->basepic = R_TextureNumForName (animdefs[i].startname);
      }
      else
      {
         if ((W_CheckNumForName)(animdefs[i].startname, ns_flats) == -1)  // killough 4/17/98
            continue;

         lastanim->picnum = R_FlatNumForName (animdefs[i].endname);
         lastanim->basepic = R_FlatNumForName (animdefs[i].startname);
      }

      lastanim->istexture = animdefs[i].istexture;
      lastanim->numpics = lastanim->picnum - lastanim->basepic + 1;

      if (lastanim->numpics < 2)
         I_Error ("P_InitPicAnims: bad cycle from %s to %s",
                  animdefs[i].startname,
                  animdefs[i].endname);

      lastanim->speed = LONG(animdefs[i].speed); // killough 5/5/98: add LONG()
      lastanim++;
   }
   W_UnlockLumpNum(lump);
}

///////////////////////////////////////////////////////////////
//
// Linedef and Sector Special Implementation Utility Functions
//
///////////////////////////////////////////////////////////////

//
// getSide()
//
// Will return a side_t*
//  given the number of the current sector,
//  the line number, and the side (0/1) that you want.
//
// Note: if side=1 is specified, it must exist or results undefined
//
side_t* getSide
( int           currentSector,
  int           line,
  int           side )
{
   return &sides[ (sectors[currentSector].lines[line])->sidenum[side] ];
}


//
// getSector()
//
// Will return a sector_t*
//  given the number of the current sector,
//  the line number and the side (0/1) that you want.
//
// Note: if side=1 is specified, it must exist or results undefined
//
sector_t* getSector
( int           currentSector,
  int           line,
  int           side )
{
   return sides[ (sectors[currentSector].lines[line])->sidenum[side] ].sector;
}


//
// twoSided()
//
// Given the sector number and the line number,
//  it will tell you whether the line is two-sided or not.
//
// modified to return actual two-sidedness rather than presence
// of 2S flag unless compatibility optioned
//
int twoSided
( int   sector,
  int   line )
{
   //jff 1/26/98 return what is actually needed, whether the line
   //has two sidedefs, rather than whether the 2S flag is set

   return comp[comp_model] ?
          (sectors[sector].lines[line])->flags & ML_TWOSIDED
          :
          (sectors[sector].lines[line])->sidenum[1] != -1;
}


//
// getNextSector()
//
// Return sector_t * of sector next to current across line.
//
// Note: returns NULL if not two-sided line, or both sides refer to sector
//
sector_t* getNextSector
( line_t*       line,
  sector_t*     sec )
{
   //jff 1/26/98 check unneeded since line->backsector already
   //returns NULL if the line is not two sided, and does so from
   //the actual two-sidedness of the line, rather than its 2S flag

   if (comp[comp_model])
   {
      if (!(line->flags & ML_TWOSIDED))
         return NULL;
   }

   if (line->frontsector == sec) {
      if (comp[comp_model] || line->backsector!=sec)
         return line->backsector; //jff 5/3/98 don't retn sec unless compatibility
      else                       // fixes an intra-sector line breaking functions
         return NULL;             // like floor->highest floor
   }
   return line->frontsector;
}


//
// P_FindLowestFloorSurrounding()
//
// Returns the fixed point value of the lowest floor height
// in the sector passed or its surrounding sectors.
//
fixed_t P_FindLowestFloorSurrounding(sector_t* sec)
{
   int                 i;
   line_t*             check;
   sector_t*           other;
   fixed_t             floor = sec->floorheight;

   for (i=0 ;i < sec->linecount ; i++)
   {
      check = sec->lines[i];
      other = getNextSector(check,sec);

      if (!other)
         continue;

      if (other->floorheight < floor)
         floor = other->floorheight;
   }
   return floor;
}


//
// P_FindHighestFloorSurrounding()
//
// Passed a sector, returns the fixed point value of the largest
// floor height in the surrounding sectors, not including that passed
//
// NOTE: if no surrounding sector exists -32000*FRACUINT is returned
//       if compatibility then -500*FRACUNIT is the smallest return possible
//
fixed_t P_FindHighestFloorSurrounding(sector_t *sec)
{
   int i;
   line_t* check;
   sector_t* other;
   fixed_t floor = -500*FRACUNIT;

   //jff 1/26/98 Fix initial value for floor to not act differently
   //in sections of wad that are below -500 units
   if (!comp[comp_model])       /* jff 3/12/98 avoid ovf */
      floor = -32000*FRACUNIT;   // in height calculations

   for (i=0 ;i < sec->linecount ; i++)
   {
      check = sec->lines[i];
      other = getNextSector(check,sec);

      if (!other)
         continue;

      if (other->floorheight > floor)
         floor = other->floorheight;
   }
   return floor;
}


//
// P_FindNextHighestFloor()
//
// Passed a sector and a floor height, returns the fixed point value
// of the smallest floor height in a surrounding sector larger than
// the floor height passed. If no such height exists the floorheight
// passed is returned.
//
// Rewritten by Lee Killough to avoid fixed array and to be faster
//
fixed_t P_FindNextHighestFloor(sector_t *sec, int currentheight)
{
   sector_t *other;
   int i;

   for (i=0 ;i < sec->linecount ; i++)
      if ((other = getNextSector(sec->lines[i],sec)) &&
            other->floorheight > currentheight)
      {
         int height = other->floorheight;
         while (++i < sec->linecount)
            if ((other = getNextSector(sec->lines[i],sec)) &&
                  other->floorheight < height &&
                  other->floorheight > currentheight)
               height = other->floorheight;
         return height;
      }
   return currentheight;
}


//
// P_FindNextLowestFloor()
//
// Passed a sector and a floor height, returns the fixed point value
// of the largest floor height in a surrounding sector smaller than
// the floor height passed. If no such height exists the floorheight
// passed is returned.
//
// jff 02/03/98 Twiddled Lee's P_FindNextHighestFloor to make this
//
fixed_t P_FindNextLowestFloor(sector_t *sec, int currentheight)
{
   sector_t *other;
   int i;

   for (i=0 ;i < sec->linecount ; i++)
      if ((other = getNextSector(sec->lines[i],sec)) &&
            other->floorheight < currentheight)
      {
         int height = other->floorheight;
         while (++i < sec->linecount)
            if ((other = getNextSector(sec->lines[i],sec)) &&
                  other->floorheight > height &&
                  other->floorheight < currentheight)
               height = other->floorheight;
         return height;
      }
   return currentheight;
}


//
// P_FindNextLowestCeiling()
//
// Passed a sector and a ceiling height, returns the fixed point value
// of the largest ceiling height in a surrounding sector smaller than
// the ceiling height passed. If no such height exists the ceiling height
// passed is returned.
//
// jff 02/03/98 Twiddled Lee's P_FindNextHighestFloor to make this
//
fixed_t P_FindNextLowestCeiling(sector_t *sec, int currentheight)
{
   sector_t *other;
   int i;

   for (i=0 ;i < sec->linecount ; i++)
      if ((other = getNextSector(sec->lines[i],sec)) &&
            other->ceilingheight < currentheight)
      {
         int height = other->ceilingheight;
         while (++i < sec->linecount)
            if ((other = getNextSector(sec->lines[i],sec)) &&
                  other->ceilingheight > height &&
                  other->ceilingheight < currentheight)
               height = other->ceilingheight;
         return height;
      }
   return currentheight;
}


//
// P_FindNextHighestCeiling()
//
// Passed a sector and a ceiling height, returns the fixed point value
// of the smallest ceiling height in a surrounding sector larger than
// the ceiling height passed. If no such height exists the ceiling height
// passed is returned.
//
// jff 02/03/98 Twiddled Lee's P_FindNextHighestFloor to make this
//
fixed_t P_FindNextHighestCeiling(sector_t *sec, int currentheight)
{
   sector_t *other;
   int i;

   for (i=0 ;i < sec->linecount ; i++)
      if ((other = getNextSector(sec->lines[i],sec)) &&
            other->ceilingheight > currentheight)
      {
         int height = other->ceilingheight;
         while (++i < sec->linecount)
            if ((other = getNextSector(sec->lines[i],sec)) &&
                  other->ceilingheight < height &&
                  other->ceilingheight > currentheight)
               height = other->ceilingheight;
         return height;
      }
   return currentheight;
}


//
// P_FindLowestCeilingSurrounding()
//
// Passed a sector, returns the fixed point value of the smallest
// ceiling height in the surrounding sectors, not including that passed
//
// NOTE: if no surrounding sector exists 32000*FRACUINT is returned
//       but if compatibility then INT_MAX is the return
//
fixed_t P_FindLowestCeilingSurrounding(sector_t* sec)
{
   int                 i;
   line_t*             check;
   sector_t*           other;
   fixed_t             height = INT_MAX;

   /* jff 3/12/98 avoid ovf in height calculations */
   if (!comp[comp_model]) height = 32000*FRACUNIT;

   for (i=0 ;i < sec->linecount ; i++)
   {
      check = sec->lines[i];
      other = getNextSector(check,sec);

      if (!other)
         continue;

      if (other->ceilingheight < height)
         height = other->ceilingheight;
   }
   return height;
}


//
// P_FindHighestCeilingSurrounding()
//
// Passed a sector, returns the fixed point value of the largest
// ceiling height in the surrounding sectors, not including that passed
//
// NOTE: if no surrounding sector exists -32000*FRACUINT is returned
//       but if compatibility then 0 is the smallest return possible
//
fixed_t P_FindHighestCeilingSurrounding(sector_t* sec)
{
   int             i;
   line_t* check;
   sector_t*       other;
   fixed_t height = 0;

   /* jff 1/26/98 Fix initial value for floor to not act differently
    * in sections of wad that are below 0 units
    * jff 3/12/98 avoid ovf in height calculations */
   if (!comp[comp_model]) height = -32000*FRACUNIT;

   for (i=0 ;i < sec->linecount ; i++)
   {
      check = sec->lines[i];
      other = getNextSector(check,sec);

      if (!other)
         continue;

      if (other->ceilingheight > height)
         height = other->ceilingheight;
   }
   return height;
}


//
// P_FindShortestTextureAround()
//
// Passed a sector number, returns the shortest lower texture on a
// linedef bounding the sector.
//
// Note: If no lower texture exists 32000*FRACUNIT is returned.
//       but if compatibility then INT_MAX is returned
//
// jff 02/03/98 Add routine to find shortest lower texture
//
fixed_t P_FindShortestTextureAround(int secnum)
{
   int minsize = INT_MAX;
   side_t*     side;
   int i;
   sector_t *sec = &sectors[secnum];

   if (!comp[comp_model])
      minsize = 32000<<FRACBITS; //jff 3/13/98 prevent overflow in height calcs

   for (i = 0; i < sec->linecount; i++)
   {
      if (twoSided(secnum, i))
      {
         side = getSide(secnum,i,0);
         if (side->bottomtexture > 0)  //jff 8/14/98 texture 0 is a placeholder
            if (textureheight[side->bottomtexture] < minsize)
               minsize = textureheight[side->bottomtexture];
         side = getSide(secnum,i,1);
         if (side->bottomtexture > 0)  //jff 8/14/98 texture 0 is a placeholder
            if (textureheight[side->bottomtexture] < minsize)
               minsize = textureheight[side->bottomtexture];
      }
   }
   return minsize;
}


//
// P_FindShortestUpperAround()
//
// Passed a sector number, returns the shortest upper texture on a
// linedef bounding the sector.
//
// Note: If no upper texture exists 32000*FRACUNIT is returned.
//       but if compatibility then INT_MAX is returned
//
// jff 03/20/98 Add routine to find shortest upper texture
//
fixed_t P_FindShortestUpperAround(int secnum)
{
   int minsize = INT_MAX;
   side_t*     side;
   int i;
   sector_t *sec = &sectors[secnum];

   if (!comp[comp_model])
      minsize = 32000<<FRACBITS; //jff 3/13/98 prevent overflow
   // in height calcs
   for (i = 0; i < sec->linecount; i++)
   {
      if (twoSided(secnum, i))
      {
         side = getSide(secnum,i,0);
         if (side->toptexture > 0)     //jff 8/14/98 texture 0 is a placeholder
            if (textureheight[side->toptexture] < minsize)
               minsize = textureheight[side->toptexture];
         side = getSide(secnum,i,1);
         if (side->toptexture > 0)     //jff 8/14/98 texture 0 is a placeholder
            if (textureheight[side->toptexture] < minsize)
               minsize = textureheight[side->toptexture];
      }
   }
   return minsize;
}


//
// P_FindModelFloorSector()
//
// Passed a floor height and a sector number, return a pointer to a
// a sector with that floor height across the lowest numbered two sided
// line surrounding the sector.
//
// Note: If no sector at that height bounds the sector passed, return NULL
//
// jff 02/03/98 Add routine to find numeric model floor
//  around a sector specified by sector number
// jff 3/14/98 change first parameter to plain height to allow call
//  from routine not using floormove_t
//
sector_t *P_FindModelFloorSector(fixed_t floordestheight,int secnum)
{
   int i;
   sector_t *sec=NULL;
   int linecount;

   sec = &sectors[secnum]; //jff 3/2/98 woops! better do this
   //jff 5/23/98 don't disturb sec->linecount while searching
   // but allow early exit in old demos
   linecount = sec->linecount;
   for (i = 0; i < (demo_compatibility && sec->linecount<linecount?
                    sec->linecount : linecount); i++)
   {
      if ( twoSided(secnum, i) )
      {
         if (getSide(secnum,i,0)->sector-sectors == secnum)
            sec = getSector(secnum,i,1);
         else
            sec = getSector(secnum,i,0);

         if (sec->floorheight == floordestheight)
            return sec;
      }
   }
   return NULL;
}


//
// P_FindModelCeilingSector()
//
// Passed a ceiling height and a sector number, return a pointer to a
// a sector with that ceiling height across the lowest numbered two sided
// line surrounding the sector.
//
// Note: If no sector at that height bounds the sector passed, return NULL
//
// jff 02/03/98 Add routine to find numeric model ceiling
//  around a sector specified by sector number
//  used only from generalized ceiling types
// jff 3/14/98 change first parameter to plain height to allow call
//  from routine not using ceiling_t
//
sector_t *P_FindModelCeilingSector(fixed_t ceildestheight,int secnum)
{
   int i;
   sector_t *sec=NULL;
   int linecount;

   sec = &sectors[secnum]; //jff 3/2/98 woops! better do this
   //jff 5/23/98 don't disturb sec->linecount while searching
   // but allow early exit in old demos
   linecount = sec->linecount;
   for (i = 0; i < (demo_compatibility && sec->linecount<linecount?
                    sec->linecount : linecount); i++)
   {
      if ( twoSided(secnum, i) )
      {
         if (getSide(secnum,i,0)->sector-sectors == secnum)
            sec = getSector(secnum,i,1);
         else
            sec = getSector(secnum,i,0);

         if (sec->ceilingheight == ceildestheight)
            return sec;
      }
   }
   return NULL;
}

//
// RETURN NEXT SECTOR # THAT LINE TAG REFERS TO
//

// Find the next sector with the same tag as a linedef.
// Rewritten by Lee Killough to use chained hashing to improve speed

int P_FindSectorFromLineTag(const line_t *line, int start)
{
   start = start >= 0 ? sectors[start].nexttag :
           sectors[(unsigned) line->tag % (unsigned) numsectors].firsttag;
   while (start >= 0 && sectors[start].tag != line->tag)
      start = sectors[start].nexttag;
   return start;
}

// killough 4/16/98: Same thing, only for linedefs

int P_FindLineFromLineTag(const line_t *line, int start)
{
   start = start >= 0 ? lines[start].nexttag :
           lines[(unsigned) line->tag % (unsigned) numlines].firsttag;
   while (start >= 0 && lines[start].tag != line->tag)
      start = lines[start].nexttag;
   return start;
}

// Hash the sector tags across the sectors and linedefs.
static void P_InitTagLists(void)
{
   register int i;

   for (i=numsectors; --i>=0; )        // Initially make all slots empty.
      sectors[i].firsttag = -1;
   for (i=numsectors; --i>=0; )        // Proceed from last to first sector
   {                                 // so that lower sectors appear first
      int j = (unsigned) sectors[i].tag % (unsigned) numsectors; // Hash func
      sectors[i].nexttag = sectors[j].firsttag;   // Prepend sector to chain
      sectors[j].firsttag = i;
   }

   // killough 4/17/98: same thing, only for linedefs

   for (i=numlines; --i>=0; )        // Initially make all slots empty.
      lines[i].firsttag = -1;
   for (i=numlines; --i>=0; )        // Proceed from last to first linedef
   {                               // so that lower linedefs appear first
      int j = (unsigned) lines[i].tag % (unsigned) numlines; // Hash func
      lines[i].nexttag = lines[j].firsttag;   // Prepend linedef to chain
      lines[j].firsttag = i;
   }
}

//
// P_FindMinSurroundingLight()
//
// Passed a sector and a light level, returns the smallest light level
// in a surrounding sector less than that passed. If no smaller light
// level exists, the light level passed is returned.
//
int P_FindMinSurroundingLight
( sector_t*     sector,
  int           max )
{
   int         i;
   int         min;
   line_t*     line;
   sector_t*   check;

   min = max;
   for (i=0 ; i < sector->linecount ; i++)
   {
      line = sector->lines[i];
      check = getNextSector(line,sector);

      if (!check)
         continue;

      if (check->lightlevel < min)
         min = check->lightlevel;
   }
   return min;
}


//
// P_CanUnlockGenDoor()
//
// Passed a generalized locked door linedef and a player, returns whether
// the player has the keys necessary to unlock that door.
//
// Note: The linedef passed MUST be a generalized locked door type
//       or results are undefined.
//
// jff 02/05/98 routine added to test for unlockability of
//  generalized locked doors
//
boolean P_CanUnlockGenDoor
( line_t* line,
  player_t* player)
{
   // does this line special distinguish between skulls and keys?
   int skulliscard = (line->special & LockedNKeys)>>LockedNKeysShift;

   // determine for each case of lock type if player's keys are adequate
   switch((line->special & LockedKey)>>LockedKeyShift)
   {
   case AnyKey:
      if
      (
         !player->cards[it_redcard] &&
         !player->cards[it_redskull] &&
         !player->cards[it_bluecard] &&
         !player->cards[it_blueskull] &&
         !player->cards[it_yellowcard] &&
         !player->cards[it_yellowskull]
      )
      {
         player->message = PD_ANY; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   case RCard:
      if
      (
         !player->cards[it_redcard] &&
         (!skulliscard || !player->cards[it_redskull])
      )
      {
         player->message = skulliscard? PD_REDK : PD_REDC; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   case BCard:
      if
      (
         !player->cards[it_bluecard] &&
         (!skulliscard || !player->cards[it_blueskull])
      )
      {
         player->message = skulliscard? PD_BLUEK : PD_BLUEC; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   case YCard:
      if
      (
         !player->cards[it_yellowcard] &&
         (!skulliscard || !player->cards[it_yellowskull])
      )
      {
         player->message = skulliscard? PD_YELLOWK : PD_YELLOWC; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   case RSkull:
      if
      (
         !player->cards[it_redskull] &&
         (!skulliscard || !player->cards[it_redcard])
      )
      {
         player->message = skulliscard? PD_REDK : PD_REDS; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   case BSkull:
      if
      (
         !player->cards[it_blueskull] &&
         (!skulliscard || !player->cards[it_bluecard])
      )
      {
         player->message = skulliscard? PD_BLUEK : PD_BLUES; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   case YSkull:
      if
      (
         !player->cards[it_yellowskull] &&
         (!skulliscard || !player->cards[it_yellowcard])
      )
      {
         player->message = skulliscard? PD_YELLOWK : PD_YELLOWS; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   case AllKeys:
      if
      (
         !skulliscard &&
         (
            !player->cards[it_redcard] ||
            !player->cards[it_redskull] ||
            !player->cards[it_bluecard] ||
            !player->cards[it_blueskull] ||
            !player->cards[it_yellowcard] ||
            !player->cards[it_yellowskull]
         )
      )
      {
         player->message = PD_ALL6; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      if
      (
         skulliscard &&
         (
            (!player->cards[it_redcard] &&
             !player->cards[it_redskull]) ||
            (!player->cards[it_bluecard] &&
             !player->cards[it_blueskull]) ||
            (!player->cards[it_yellowcard] &&
             !player->cards[it_yellowskull])
         )
      )
      {
         player->message = PD_ALL3; // Ty 03/27/98 - externalized
         S_StartSound(player->mo,sfx_oof);             // killough 3/20/98
         return false;
      }
      break;
   }
   return true;
}


//
// P_SectorActive()
//
// Passed a linedef special class (floor, ceiling, lighting) and a sector
// returns whether the sector is already busy with a linedef special of the
// same class. If old demo compatibility true, all linedef special classes
// are the same.
//
// jff 2/23/98 added to prevent old demos from
//  succeeding in starting multiple specials on one sector
//
boolean P_SectorActive(special_e t,sector_t *sec)
{
   if (demo_compatibility)  // return whether any thinker is active
      return sec->floordata || sec->ceilingdata || sec->lightingdata;
   else
      switch (t)             // return whether thinker of same type is active
      {
      case floor_special:
         return (sec->floordata!=NULL);
      case ceiling_special:
         return (sec->ceilingdata!=NULL);
      case lighting_special:
         return (sec->lightingdata!=NULL);
      }
   return true; // don't know which special, must be active, shouldn't be here
}


//
// P_CheckTag()
//
// Passed a line, returns true if the tag is non-zero or the line special
// allows no tag without harm. If compatibility, all linedef specials are
// allowed to have zero tag.
//
// Note: Only line specials activated by walkover, pushing, or shooting are
//       checked by this routine.
//
// jff 2/27/98 Added to check for zero tag allowed for regular special types
//
int P_CheckTag(line_t *line)
{
   /* tag not zero, allowed, or
    * killough 11/98: compatibility option */
   if (comp[comp_zerotags] || line->tag)
      return 1;

   switch(line->special)
   {
   case 1:                 // Manual door specials
   case 26:
   case 27:
   case 28:
   case 31:
   case 32:
   case 33:
   case 34:
   case 117:
   case 118:

   case 139:               // Lighting specials
   case 170:
   case 79:
   case 35:
   case 138:
   case 171:
   case 81:
   case 13:
   case 192:
   case 169:
   case 80:
   case 12:
   case 194:
   case 173:
   case 157:
   case 104:
   case 193:
   case 172:
   case 156:
   case 17:

   case 195:               // Thing teleporters
   case 174:
   case 97:
   case 39:
   case 126:
   case 125:
   case 210:
   case 209:
   case 208:
   case 207:

   case 11:                // Exits
   case 52:
   case 197:
   case 51:
   case 124:
   case 198:

   case 48:                // Scrolling walls
   case 85:
      return 1;   // zero tag allowed

   default:
      break;
   }
   return 0;       // zero tag not allowed
}


//
// P_IsSecret()
//
// Passed a sector, returns if the sector secret type is still active, i.e.
// secret type is set and the secret has not yet been obtained.
//
// jff 3/14/98 added to simplify checks for whether sector is secret
//  in automap and other places
//
boolean P_IsSecret(sector_t *sec)
{
   return (sec->special==9 || (sec->special&SECRET_MASK));
}


//
// P_WasSecret()
//
// Passed a sector, returns if the sector secret type is was active, i.e.
// secret type was set and the secret has been obtained already.
//
// jff 3/14/98 added to simplify checks for whether sector is secret
//  in automap and other places
//
boolean P_WasSecret(sector_t *sec)
{
   return (sec->oldspecial==9 || (sec->oldspecial&SECRET_MASK));
}


//////////////////////////////////////////////////////////////////////////
//
// Events
//
// Events are operations triggered by using, crossing,
// or shooting special lines, or by timed thinkers.
//
/////////////////////////////////////////////////////////////////////////

//
// P_CrossSpecialLine - Walkover Trigger Dispatcher
//
// Called every time a thing origin is about
//  to cross a line with a non 0 special, whether a walkover type or not.
//
// jff 02/12/98 all W1 lines were fixed to check the result from the EV_
//  function before clearing the special. This avoids losing the function
//  of the line, should the sector already be active when the line is
//  crossed. Change is qualified by demo_compatibility.
//
// CPhipps - take a line_t pointer instead of a line number, as in MBF
void P_CrossSpecialLine(line_t *line, int side, mobj_t *thing)
{
   int         ok;

   //  Things that should never trigger lines
   if (!thing->player)
   {
      // Things that should NOT trigger specials...
      switch(thing->type)
      {
      case MT_ROCKET:
      case MT_PLASMA:
      case MT_BFG:
      case MT_TROOPSHOT:
      case MT_HEADSHOT:
      case MT_BRUISERSHOT:
         return;
         break;

      default: break;
      }
   }

   //jff 02/04/98 add check here for generalized lindef types
   if (!demo_compatibility) // generalized types not recognized if old demo
   {
      // pointer to line function is NULL by default, set non-null if
      // line special is walkover generalized linedef type
      int (*linefunc)(line_t *line)=NULL;

      // check each range of generalized linedefs
      if ((unsigned)line->special >= GenEnd)
      {
         // Out of range for GenFloors
      }
      else if ((unsigned)line->special >= GenFloorBase)
      {
         if (!thing->player)
            if ((line->special & FloorChange) || !(line->special & FloorModel))
               return;     // FloorModel is "Allow Monsters" if FloorChange is 0
         if (!line->tag) //jff 2/27/98 all walk generalized types require tag
            return;
         linefunc = EV_DoGenFloor;
      }
      else if ((unsigned)line->special >= GenCeilingBase)
      {
         if (!thing->player)
            if ((line->special & CeilingChange) || !(line->special & CeilingModel))
               return;     // CeilingModel is "Allow Monsters" if CeilingChange is 0
         if (!line->tag) //jff 2/27/98 all walk generalized types require tag
            return;
         linefunc = EV_DoGenCeiling;
      }
      else if ((unsigned)line->special >= GenDoorBase)
      {
         if (!thing->player)
         {
            if (!(line->special & DoorMonster))
               return;                    // monsters disallowed from this door
            if (line->flags & ML_SECRET) // they can't open secret doors either
               return;
         }
         if (!line->tag) //3/2/98 move outside the monster check
            return;
         linefunc = EV_DoGenDoor;
      }
      else if ((unsigned)line->special >= GenLockedBase)
      {
         if (!thing->player)
            return;                     // monsters disallowed from unlocking doors
         if (((line->special&TriggerType)==WalkOnce) || ((line->special&TriggerType)==WalkMany))
         { //jff 4/1/98 check for being a walk type before reporting door type
            if (!P_CanUnlockGenDoor(line,thing->player))
               return;
         }
         else
            return;
         linefunc = EV_DoGenLockedDoor;
      }
      else if ((unsigned)line->special >= GenLiftBase)
      {
         if (!thing->player)
            if (!(line->special & LiftMonster))
               return; // monsters disallowed
         if (!line->tag) //jff 2/27/98 all walk generalized types require tag
            return;
         linefunc = EV_DoGenLift;
      }
      else if ((unsigned)line->special >= GenStairsBase)
      {
         if (!thing->player)
            if (!(line->special & StairMonster))
               return; // monsters disallowed
         if (!line->tag) //jff 2/27/98 all walk generalized types require tag
            return;
         linefunc = EV_DoGenStairs;
      }

      if (linefunc) // if it was a valid generalized type
         switch((line->special & TriggerType) >> TriggerTypeShift)
         {
         case WalkOnce:
            if (linefunc(line))
               line->special = 0;    // clear special if a walk once type
            return;
         case WalkMany:
            linefunc(line);
            return;
         default:                  // if not a walk type, do nothing here
            return;
         }
   }

   if (!thing->player)
   {
      ok = 0;
      switch(line->special)
      {
      case 39:      // teleport trigger
      case 97:      // teleport retrigger
      case 125:     // teleport monsteronly trigger
      case 126:     // teleport monsteronly retrigger
      case 4:       // raise door
      case 10:      // plat down-wait-up-stay trigger
      case 88:      // plat down-wait-up-stay retrigger
         //jff 3/5/98 add ability of monsters etc. to use teleporters
      case 208:     //silent thing teleporters
      case 207:
      case 243:     //silent line-line teleporter
      case 244:     //jff 3/6/98 make fit within DCK's 256 linedef types
      case 262:     //jff 4/14/98 add monster only
      case 263:     //jff 4/14/98 silent thing,line,line rev types
      case 264:     //jff 4/14/98 plus player/monster silent line
      case 265:     //            reversed types
      case 266:
      case 267:
      case 268:
      case 269:
         ok = 1;
         break;
      }
      if (!ok)
         return;
   }

   if (!P_CheckTag(line))  //jff 2/27/98 disallow zero tag on some types
      return;

   // Dispatch on the line special value to the line's action routine
   // If a once only function, and successful, clear the line special

   switch (line->special)
   {
      // Regular walk once triggers

   case 2:
      // Open Door
      if (EV_DoDoor(line,p_open) || demo_compatibility)
         line->special = 0;
      break;

   case 3:
      // Close Door
      if (EV_DoDoor(line,p_close) || demo_compatibility)
         line->special = 0;
      break;

   case 4:
      // Raise Door
      if (EV_DoDoor(line,normal) || demo_compatibility)
         line->special = 0;
      break;

   case 5:
      // Raise Floor
      if (EV_DoFloor(line,raiseFloor) || demo_compatibility)
         line->special = 0;
      break;

   case 6:
      // Fast Ceiling Crush & Raise
      if (EV_DoCeiling(line,fastCrushAndRaise) || demo_compatibility)
         line->special = 0;
      break;

   case 8:
      // Build Stairs
      if (EV_BuildStairs(line,build8) || demo_compatibility)
         line->special = 0;
      break;

   case 10:
      // PlatDownWaitUp
      if (EV_DoPlat(line,downWaitUpStay,0) || demo_compatibility)
         line->special = 0;
      break;

   case 12:
      // Light Turn On - brightest near
      if (EV_LightTurnOn(line,0) || demo_compatibility)
         line->special = 0;
      break;

   case 13:
      // Light Turn On 255
      if (EV_LightTurnOn(line,255) || demo_compatibility)
         line->special = 0;
      break;

   case 16:
      // Close Door 30
      if (EV_DoDoor(line,close30ThenOpen) || demo_compatibility)
         line->special = 0;
      break;

   case 17:
      // Start Light Strobing
      if (EV_StartLightStrobing(line) || demo_compatibility)
         line->special = 0;
      break;

   case 19:
      // Lower Floor
      if (EV_DoFloor(line,lowerFloor) || demo_compatibility)
         line->special = 0;
      break;

   case 22:
      // Raise floor to nearest height and change texture
      if (EV_DoPlat(line,raiseToNearestAndChange,0) || demo_compatibility)
         line->special = 0;
      break;

   case 25:
      // Ceiling Crush and Raise
      if (EV_DoCeiling(line,crushAndRaise) || demo_compatibility)
         line->special = 0;
      break;

   case 30:
      // Raise floor to shortest texture height
      //  on either side of lines.
      if (EV_DoFloor(line,raiseToTexture) || demo_compatibility)
         line->special = 0;
      break;

   case 35:
      // Lights Very Dark
      if (EV_LightTurnOn(line,35) || demo_compatibility)
         line->special = 0;
      break;

   case 36:
      // Lower Floor (TURBO)
      if (EV_DoFloor(line,turboLower) || demo_compatibility)
         line->special = 0;
      break;

   case 37:
      // LowerAndChange
      if (EV_DoFloor(line,lowerAndChange) || demo_compatibility)
         line->special = 0;
      break;

   case 38:
      // Lower Floor To Lowest
      if (EV_DoFloor(line, lowerFloorToLowest) || demo_compatibility)
         line->special = 0;
      break;

   case 39:
      // TELEPORT! //jff 02/09/98 fix using up with wrong side crossing
      if (EV_Teleport(line, side, thing) || demo_compatibility)
         line->special = 0;
      break;

   case 40:
      // RaiseCeilingLowerFloor
      if (demo_compatibility)
      {
         EV_DoCeiling( line, raiseToHighest );
         EV_DoFloor( line, lowerFloorToLowest ); //jff 02/12/98 doesn't work
         line->special = 0;
      }
      else
         if (EV_DoCeiling(line, raiseToHighest))
            line->special = 0;
      break;

   case 44:
      // Ceiling Crush
      if (EV_DoCeiling(line, lowerAndCrush) || demo_compatibility)
         line->special = 0;
      break;

   case 52:
      // EXIT!
      // killough 10/98: prevent zombies from exiting levels
      if (!(thing->player && thing->player->health <= 0 && !comp[comp_zombie]))
         G_ExitLevel ();
      break;

   case 53:
      // Perpetual Platform Raise
      if (EV_DoPlat(line,perpetualRaise,0) || demo_compatibility)
         line->special = 0;
      break;

   case 54:
      // Platform Stop
      if (EV_StopPlat(line) || demo_compatibility)
         line->special = 0;
      break;

   case 56:
      // Raise Floor Crush
      if (EV_DoFloor(line,raiseFloorCrush) || demo_compatibility)
         line->special = 0;
      break;

   case 57:
      // Ceiling Crush Stop
      if (EV_CeilingCrushStop(line) || demo_compatibility)
         line->special = 0;
      break;

   case 58:
      // Raise Floor 24
      if (EV_DoFloor(line,raiseFloor24) || demo_compatibility)
         line->special = 0;
      break;

   case 59:
      // Raise Floor 24 And Change
      if (EV_DoFloor(line,raiseFloor24AndChange) || demo_compatibility)
         line->special = 0;
      break;

   case 100:
      // Build Stairs Turbo 16
      if (EV_BuildStairs(line,turbo16) || demo_compatibility)
         line->special = 0;
      break;

   case 104:
      // Turn lights off in sector(tag)
      if (EV_TurnTagLightsOff(line) || demo_compatibility)
         line->special = 0;
      break;

   case 108:
      // Blazing Door Raise (faster than TURBO!)
      if (EV_DoDoor(line,blazeRaise) || demo_compatibility)
         line->special = 0;
      break;

   case 109:
      // Blazing Door Open (faster than TURBO!)
      if (EV_DoDoor (line,blazeOpen) || demo_compatibility)
         line->special = 0;
      break;

   case 110:
      // Blazing Door Close (faster than TURBO!)
      if (EV_DoDoor (line,blazeClose) || demo_compatibility)
         line->special = 0;
      break;

   case 119:
      // Raise floor to nearest surr. floor
      if (EV_DoFloor(line,raiseFloorToNearest) || demo_compatibility)
         line->special = 0;
      break;

   case 121:
      // Blazing PlatDownWaitUpStay
      if (EV_DoPlat(line,blazeDWUS,0) || demo_compatibility)
         line->special = 0;
      break;

   case 124:
      // Secret EXIT
      // killough 10/98: prevent zombies from exiting levels
      // CPhipps - change for lxdoom's compatibility handling
      if (!(thing->player && thing->player->health <= 0 && !comp[comp_zombie]))
         G_SecretExitLevel ();
      break;

   case 125:
      // TELEPORT MonsterONLY
      if (!thing->player &&
            (EV_Teleport(line, side, thing) || demo_compatibility))
         line->special = 0;
      break;

   case 130:
      // Raise Floor Turbo
      if (EV_DoFloor(line,raiseFloorTurbo) || demo_compatibility)
         line->special = 0;
      break;

   case 141:
      // Silent Ceiling Crush & Raise
      if (EV_DoCeiling(line,silentCrushAndRaise) || demo_compatibility)
         line->special = 0;
      break;

      // Regular walk many retriggerable

   case 72:
      // Ceiling Crush
      EV_DoCeiling( line, lowerAndCrush );
      break;

   case 73:
      // Ceiling Crush and Raise
      EV_DoCeiling(line,crushAndRaise);
      break;

   case 74:
      // Ceiling Crush Stop
      EV_CeilingCrushStop(line);
      break;

   case 75:
      // Close Door
      EV_DoDoor(line,p_close);
      break;

   case 76:
      // Close Door 30
      EV_DoDoor(line,close30ThenOpen);
      break;

   case 77:
      // Fast Ceiling Crush & Raise
      EV_DoCeiling(line,fastCrushAndRaise);
      break;

   case 79:
      // Lights Very Dark
      EV_LightTurnOn(line,35);
      break;

   case 80:
      // Light Turn On - brightest near
      EV_LightTurnOn(line,0);
      break;

   case 81:
      // Light Turn On 255
      EV_LightTurnOn(line,255);
      break;

   case 82:
      // Lower Floor To Lowest
      EV_DoFloor( line, lowerFloorToLowest );
      break;

   case 83:
      // Lower Floor
      EV_DoFloor(line,lowerFloor);
      break;

   case 84:
      // LowerAndChange
      EV_DoFloor(line,lowerAndChange);
      break;

   case 86:
      // Open Door
      EV_DoDoor(line,p_open);
      break;

   case 87:
      // Perpetual Platform Raise
      EV_DoPlat(line,perpetualRaise,0);
      break;

   case 88:
      // PlatDownWaitUp
      EV_DoPlat(line,downWaitUpStay,0);
      break;

   case 89:
      // Platform Stop
      EV_StopPlat(line);
      break;

   case 90:
      // Raise Door
      EV_DoDoor(line,normal);
      break;

   case 91:
      // Raise Floor
      EV_DoFloor(line,raiseFloor);
      break;

   case 92:
      // Raise Floor 24
      EV_DoFloor(line,raiseFloor24);
      break;

   case 93:
      // Raise Floor 24 And Change
      EV_DoFloor(line,raiseFloor24AndChange);
      break;

   case 94:
      // Raise Floor Crush
      EV_DoFloor(line,raiseFloorCrush);
      break;

   case 95:
      // Raise floor to nearest height
      // and change texture.
      EV_DoPlat(line,raiseToNearestAndChange,0);
      break;

   case 96:
      // Raise floor to shortest texture height
      // on either side of lines.
      EV_DoFloor(line,raiseToTexture);
      break;

   case 97:
      // TELEPORT!
      EV_Teleport( line, side, thing );
      break;

   case 98:
      // Lower Floor (TURBO)
      EV_DoFloor(line,turboLower);
      break;

   case 105:
      // Blazing Door Raise (faster than TURBO!)
      EV_DoDoor (line,blazeRaise);
      break;

   case 106:
      // Blazing Door Open (faster than TURBO!)
      EV_DoDoor (line,blazeOpen);
      break;

   case 107:
      // Blazing Door Close (faster than TURBO!)
      EV_DoDoor (line,blazeClose);
      break;

   case 120:
      // Blazing PlatDownWaitUpStay.
      EV_DoPlat(line,blazeDWUS,0);
      break;

   case 126:
      // TELEPORT MonsterONLY.
      if (!thing->player)
         EV_Teleport( line, side, thing );
      break;

   case 128:
      // Raise To Nearest Floor
      EV_DoFloor(line,raiseFloorToNearest);
      break;

   case 129:
      // Raise Floor Turbo
      EV_DoFloor(line,raiseFloorTurbo);
      break;

      // Extended walk triggers

      // jff 1/29/98 added new linedef types to fill all functions out so that
      // all have varieties SR, S1, WR, W1

      // killough 1/31/98: "factor out" compatibility test, by
      // adding inner switch qualified by compatibility flag.
      // relax test to demo_compatibility

      // killough 2/16/98: Fix problems with W1 types being cleared too early

   default:
      if (!demo_compatibility)
         switch (line->special)
         {
            // Extended walk once triggers

         case 142:
            // Raise Floor 512
            // 142 W1  EV_DoFloor(raiseFloor512)
            if (EV_DoFloor(line,raiseFloor512))
               line->special = 0;
            break;

         case 143:
            // Raise Floor 24 and change
            // 143 W1  EV_DoPlat(raiseAndChange,24)
            if (EV_DoPlat(line,raiseAndChange,24))
               line->special = 0;
            break;

         case 144:
            // Raise Floor 32 and change
            // 144 W1  EV_DoPlat(raiseAndChange,32)
            if (EV_DoPlat(line,raiseAndChange,32))
               line->special = 0;
            break;

         case 145:
            // Lower Ceiling to Floor
            // 145 W1  EV_DoCeiling(lowerToFloor)
            if (EV_DoCeiling( line, lowerToFloor ))
               line->special = 0;
            break;

         case 146:
            // Lower Pillar, Raise Donut
            // 146 W1  EV_DoDonut()
            if (EV_DoDonut(line))
               line->special = 0;
            break;

         case 199:
            // Lower ceiling to lowest surrounding ceiling
            // 199 W1 EV_DoCeiling(lowerToLowest)
            if (EV_DoCeiling(line,lowerToLowest))
               line->special = 0;
            break;

         case 200:
            // Lower ceiling to highest surrounding floor
            // 200 W1 EV_DoCeiling(lowerToMaxFloor)
            if (EV_DoCeiling(line,lowerToMaxFloor))
               line->special = 0;
            break;

         case 207:
            // killough 2/16/98: W1 silent teleporter (normal kind)
            if (EV_SilentTeleport(line, side, thing))
               line->special = 0;
            break;

            //jff 3/16/98 renumber 215->153
         case 153: //jff 3/15/98 create texture change no motion type
            // Texture/Type Change Only (Trig)
            // 153 W1 Change Texture/Type Only
            if (EV_DoChange(line,trigChangeOnly))
               line->special = 0;
            break;

         case 239: //jff 3/15/98 create texture change no motion type
            // Texture/Type Change Only (Numeric)
            // 239 W1 Change Texture/Type Only
            if (EV_DoChange(line,numChangeOnly))
               line->special = 0;
            break;

         case 219:
            // Lower floor to next lower neighbor
            // 219 W1 Lower Floor Next Lower Neighbor
            if (EV_DoFloor(line,lowerFloorToNearest))
               line->special = 0;
            break;

         case 227:
            // Raise elevator next floor
            // 227 W1 Raise Elevator next floor
            if (EV_DoElevator(line,elevateUp))
               line->special = 0;
            break;

         case 231:
            // Lower elevator next floor
            // 231 W1 Lower Elevator next floor
            if (EV_DoElevator(line,elevateDown))
               line->special = 0;
            break;

         case 235:
            // Elevator to current floor
            // 235 W1 Elevator to current floor
            if (EV_DoElevator(line,elevateCurrent))
               line->special = 0;
            break;


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