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https://github.com/id-Software/DOOM.git
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The DOOM sources as originally released on December 23, 1997
This commit is contained in:
Travis Bradshaw
708
linuxdoom-1.10/p_setup.c
Normal file
708
linuxdoom-1.10/p_setup.c
Normal file
@@ -0,0 +1,708 @@
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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 source is available for distribution and/or modification
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// only under the terms of the DOOM Source Code License as
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// published by id Software. All rights reserved.
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//
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// The source 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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// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
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// for more details.
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//
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// $Log:$
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//
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// DESCRIPTION:
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// Do all the WAD I/O, get map description,
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// set up initial state and misc. LUTs.
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//
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//-----------------------------------------------------------------------------
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static const char
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rcsid[] = "$Id: p_setup.c,v 1.5 1997/02/03 22:45:12 b1 Exp $";
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#include <math.h>
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||||
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#include "z_zone.h"
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#include "m_swap.h"
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#include "m_bbox.h"
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#include "g_game.h"
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#include "i_system.h"
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#include "w_wad.h"
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#include "doomdef.h"
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#include "p_local.h"
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#include "s_sound.h"
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#include "doomstat.h"
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||||
void P_SpawnMapThing (mapthing_t* mthing);
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||||
//
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// MAP related Lookup tables.
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// Store VERTEXES, LINEDEFS, SIDEDEFS, etc.
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//
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int numvertexes;
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vertex_t* vertexes;
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||||
int numsegs;
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||||
seg_t* segs;
|
||||
|
||||
int numsectors;
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||||
sector_t* sectors;
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||||
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||||
int numsubsectors;
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subsector_t* subsectors;
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||||
|
||||
int numnodes;
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node_t* nodes;
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|
||||
int numlines;
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line_t* lines;
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int numsides;
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side_t* sides;
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// BLOCKMAP
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// Created from axis aligned bounding box
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// of the map, a rectangular array of
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// blocks of size ...
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// Used to speed up collision detection
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// by spatial subdivision in 2D.
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//
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// Blockmap size.
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int bmapwidth;
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int bmapheight; // size in mapblocks
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short* blockmap; // int for larger maps
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// offsets in blockmap are from here
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short* blockmaplump;
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// origin of block map
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fixed_t bmaporgx;
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fixed_t bmaporgy;
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// for thing chains
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mobj_t** blocklinks;
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// REJECT
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||||
// For fast sight rejection.
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// Speeds up enemy AI by skipping detailed
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// LineOf Sight calculation.
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// Without special effect, this could be
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// used as a PVS lookup as well.
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//
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byte* rejectmatrix;
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// Maintain single and multi player starting spots.
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#define MAX_DEATHMATCH_STARTS 10
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mapthing_t deathmatchstarts[MAX_DEATHMATCH_STARTS];
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||||
mapthing_t* deathmatch_p;
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mapthing_t playerstarts[MAXPLAYERS];
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//
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// P_LoadVertexes
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//
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void P_LoadVertexes (int lump)
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||||
{
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byte* data;
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||||
int i;
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||||
mapvertex_t* ml;
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vertex_t* li;
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||||
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// Determine number of lumps:
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// total lump length / vertex record length.
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numvertexes = W_LumpLength (lump) / sizeof(mapvertex_t);
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||||
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// Allocate zone memory for buffer.
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vertexes = Z_Malloc (numvertexes*sizeof(vertex_t),PU_LEVEL,0);
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||||
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||||
// Load data into cache.
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data = W_CacheLumpNum (lump,PU_STATIC);
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||||
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||||
ml = (mapvertex_t *)data;
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li = vertexes;
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||||
|
||||
// Copy and convert vertex coordinates,
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||||
// internal representation as fixed.
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||||
for (i=0 ; i<numvertexes ; i++, li++, ml++)
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||||
{
|
||||
li->x = SHORT(ml->x)<<FRACBITS;
|
||||
li->y = SHORT(ml->y)<<FRACBITS;
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||||
}
|
||||
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// Free buffer memory.
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||||
Z_Free (data);
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||||
}
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||||
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||||
//
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||||
// P_LoadSegs
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||||
//
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void P_LoadSegs (int lump)
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||||
{
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||||
byte* data;
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||||
int i;
|
||||
mapseg_t* ml;
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||||
seg_t* li;
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||||
line_t* ldef;
|
||||
int linedef;
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||||
int side;
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||||
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numsegs = W_LumpLength (lump) / sizeof(mapseg_t);
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segs = Z_Malloc (numsegs*sizeof(seg_t),PU_LEVEL,0);
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memset (segs, 0, numsegs*sizeof(seg_t));
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||||
data = W_CacheLumpNum (lump,PU_STATIC);
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||||
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||||
ml = (mapseg_t *)data;
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||||
li = segs;
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||||
for (i=0 ; i<numsegs ; i++, li++, ml++)
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{
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li->v1 = &vertexes[SHORT(ml->v1)];
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li->v2 = &vertexes[SHORT(ml->v2)];
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li->angle = (SHORT(ml->angle))<<16;
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li->offset = (SHORT(ml->offset))<<16;
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linedef = SHORT(ml->linedef);
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ldef = &lines[linedef];
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li->linedef = ldef;
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side = SHORT(ml->side);
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li->sidedef = &sides[ldef->sidenum[side]];
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li->frontsector = sides[ldef->sidenum[side]].sector;
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if (ldef-> flags & ML_TWOSIDED)
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li->backsector = sides[ldef->sidenum[side^1]].sector;
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||||
else
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li->backsector = 0;
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||||
}
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||||
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||||
Z_Free (data);
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||||
}
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//
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||||
// P_LoadSubsectors
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||||
//
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||||
void P_LoadSubsectors (int lump)
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||||
{
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||||
byte* data;
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||||
int i;
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||||
mapsubsector_t* ms;
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||||
subsector_t* ss;
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||||
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numsubsectors = W_LumpLength (lump) / sizeof(mapsubsector_t);
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subsectors = Z_Malloc (numsubsectors*sizeof(subsector_t),PU_LEVEL,0);
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data = W_CacheLumpNum (lump,PU_STATIC);
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ms = (mapsubsector_t *)data;
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memset (subsectors,0, numsubsectors*sizeof(subsector_t));
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ss = subsectors;
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||||
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||||
for (i=0 ; i<numsubsectors ; i++, ss++, ms++)
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||||
{
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ss->numlines = SHORT(ms->numsegs);
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||||
ss->firstline = SHORT(ms->firstseg);
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}
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Z_Free (data);
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}
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//
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// P_LoadSectors
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//
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void P_LoadSectors (int lump)
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{
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byte* data;
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int i;
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mapsector_t* ms;
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sector_t* ss;
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numsectors = W_LumpLength (lump) / sizeof(mapsector_t);
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sectors = Z_Malloc (numsectors*sizeof(sector_t),PU_LEVEL,0);
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memset (sectors, 0, numsectors*sizeof(sector_t));
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data = W_CacheLumpNum (lump,PU_STATIC);
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ms = (mapsector_t *)data;
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ss = sectors;
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for (i=0 ; i<numsectors ; i++, ss++, ms++)
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{
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ss->floorheight = SHORT(ms->floorheight)<<FRACBITS;
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ss->ceilingheight = SHORT(ms->ceilingheight)<<FRACBITS;
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ss->floorpic = R_FlatNumForName(ms->floorpic);
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ss->ceilingpic = R_FlatNumForName(ms->ceilingpic);
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ss->lightlevel = SHORT(ms->lightlevel);
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ss->special = SHORT(ms->special);
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ss->tag = SHORT(ms->tag);
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ss->thinglist = NULL;
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}
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Z_Free (data);
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}
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//
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// P_LoadNodes
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//
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void P_LoadNodes (int lump)
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{
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byte* data;
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int i;
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int j;
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int k;
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mapnode_t* mn;
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node_t* no;
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numnodes = W_LumpLength (lump) / sizeof(mapnode_t);
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nodes = Z_Malloc (numnodes*sizeof(node_t),PU_LEVEL,0);
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data = W_CacheLumpNum (lump,PU_STATIC);
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mn = (mapnode_t *)data;
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no = nodes;
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for (i=0 ; i<numnodes ; i++, no++, mn++)
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{
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no->x = SHORT(mn->x)<<FRACBITS;
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no->y = SHORT(mn->y)<<FRACBITS;
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no->dx = SHORT(mn->dx)<<FRACBITS;
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no->dy = SHORT(mn->dy)<<FRACBITS;
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for (j=0 ; j<2 ; j++)
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{
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no->children[j] = SHORT(mn->children[j]);
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for (k=0 ; k<4 ; k++)
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no->bbox[j][k] = SHORT(mn->bbox[j][k])<<FRACBITS;
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}
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}
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Z_Free (data);
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}
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//
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// P_LoadThings
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//
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void P_LoadThings (int lump)
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{
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byte* data;
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int i;
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mapthing_t* mt;
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int numthings;
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boolean spawn;
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data = W_CacheLumpNum (lump,PU_STATIC);
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numthings = W_LumpLength (lump) / sizeof(mapthing_t);
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mt = (mapthing_t *)data;
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for (i=0 ; i<numthings ; i++, mt++)
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{
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spawn = true;
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// Do not spawn cool, new monsters if !commercial
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if ( gamemode != commercial)
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{
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switch(mt->type)
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{
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case 68: // Arachnotron
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case 64: // Archvile
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case 88: // Boss Brain
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case 89: // Boss Shooter
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case 69: // Hell Knight
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case 67: // Mancubus
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case 71: // Pain Elemental
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case 65: // Former Human Commando
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case 66: // Revenant
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case 84: // Wolf SS
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spawn = false;
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break;
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}
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}
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if (spawn == false)
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break;
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// Do spawn all other stuff.
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mt->x = SHORT(mt->x);
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mt->y = SHORT(mt->y);
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mt->angle = SHORT(mt->angle);
|
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mt->type = SHORT(mt->type);
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mt->options = SHORT(mt->options);
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P_SpawnMapThing (mt);
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}
|
||||
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Z_Free (data);
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}
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|
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//
|
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// P_LoadLineDefs
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// Also counts secret lines for intermissions.
|
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//
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void P_LoadLineDefs (int lump)
|
||||
{
|
||||
byte* data;
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int i;
|
||||
maplinedef_t* mld;
|
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line_t* ld;
|
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vertex_t* v1;
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vertex_t* v2;
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||||
|
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numlines = W_LumpLength (lump) / sizeof(maplinedef_t);
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||||
lines = Z_Malloc (numlines*sizeof(line_t),PU_LEVEL,0);
|
||||
memset (lines, 0, numlines*sizeof(line_t));
|
||||
data = W_CacheLumpNum (lump,PU_STATIC);
|
||||
|
||||
mld = (maplinedef_t *)data;
|
||||
ld = lines;
|
||||
for (i=0 ; i<numlines ; i++, mld++, ld++)
|
||||
{
|
||||
ld->flags = SHORT(mld->flags);
|
||||
ld->special = SHORT(mld->special);
|
||||
ld->tag = SHORT(mld->tag);
|
||||
v1 = ld->v1 = &vertexes[SHORT(mld->v1)];
|
||||
v2 = ld->v2 = &vertexes[SHORT(mld->v2)];
|
||||
ld->dx = v2->x - v1->x;
|
||||
ld->dy = v2->y - v1->y;
|
||||
|
||||
if (!ld->dx)
|
||||
ld->slopetype = ST_VERTICAL;
|
||||
else if (!ld->dy)
|
||||
ld->slopetype = ST_HORIZONTAL;
|
||||
else
|
||||
{
|
||||
if (FixedDiv (ld->dy , ld->dx) > 0)
|
||||
ld->slopetype = ST_POSITIVE;
|
||||
else
|
||||
ld->slopetype = ST_NEGATIVE;
|
||||
}
|
||||
|
||||
if (v1->x < v2->x)
|
||||
{
|
||||
ld->bbox[BOXLEFT] = v1->x;
|
||||
ld->bbox[BOXRIGHT] = v2->x;
|
||||
}
|
||||
else
|
||||
{
|
||||
ld->bbox[BOXLEFT] = v2->x;
|
||||
ld->bbox[BOXRIGHT] = v1->x;
|
||||
}
|
||||
|
||||
if (v1->y < v2->y)
|
||||
{
|
||||
ld->bbox[BOXBOTTOM] = v1->y;
|
||||
ld->bbox[BOXTOP] = v2->y;
|
||||
}
|
||||
else
|
||||
{
|
||||
ld->bbox[BOXBOTTOM] = v2->y;
|
||||
ld->bbox[BOXTOP] = v1->y;
|
||||
}
|
||||
|
||||
ld->sidenum[0] = SHORT(mld->sidenum[0]);
|
||||
ld->sidenum[1] = SHORT(mld->sidenum[1]);
|
||||
|
||||
if (ld->sidenum[0] != -1)
|
||||
ld->frontsector = sides[ld->sidenum[0]].sector;
|
||||
else
|
||||
ld->frontsector = 0;
|
||||
|
||||
if (ld->sidenum[1] != -1)
|
||||
ld->backsector = sides[ld->sidenum[1]].sector;
|
||||
else
|
||||
ld->backsector = 0;
|
||||
}
|
||||
|
||||
Z_Free (data);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// P_LoadSideDefs
|
||||
//
|
||||
void P_LoadSideDefs (int lump)
|
||||
{
|
||||
byte* data;
|
||||
int i;
|
||||
mapsidedef_t* msd;
|
||||
side_t* sd;
|
||||
|
||||
numsides = W_LumpLength (lump) / sizeof(mapsidedef_t);
|
||||
sides = Z_Malloc (numsides*sizeof(side_t),PU_LEVEL,0);
|
||||
memset (sides, 0, numsides*sizeof(side_t));
|
||||
data = W_CacheLumpNum (lump,PU_STATIC);
|
||||
|
||||
msd = (mapsidedef_t *)data;
|
||||
sd = sides;
|
||||
for (i=0 ; i<numsides ; i++, msd++, sd++)
|
||||
{
|
||||
sd->textureoffset = SHORT(msd->textureoffset)<<FRACBITS;
|
||||
sd->rowoffset = SHORT(msd->rowoffset)<<FRACBITS;
|
||||
sd->toptexture = R_TextureNumForName(msd->toptexture);
|
||||
sd->bottomtexture = R_TextureNumForName(msd->bottomtexture);
|
||||
sd->midtexture = R_TextureNumForName(msd->midtexture);
|
||||
sd->sector = §ors[SHORT(msd->sector)];
|
||||
}
|
||||
|
||||
Z_Free (data);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// P_LoadBlockMap
|
||||
//
|
||||
void P_LoadBlockMap (int lump)
|
||||
{
|
||||
int i;
|
||||
int count;
|
||||
|
||||
blockmaplump = W_CacheLumpNum (lump,PU_LEVEL);
|
||||
blockmap = blockmaplump+4;
|
||||
count = W_LumpLength (lump)/2;
|
||||
|
||||
for (i=0 ; i<count ; i++)
|
||||
blockmaplump[i] = SHORT(blockmaplump[i]);
|
||||
|
||||
bmaporgx = blockmaplump[0]<<FRACBITS;
|
||||
bmaporgy = blockmaplump[1]<<FRACBITS;
|
||||
bmapwidth = blockmaplump[2];
|
||||
bmapheight = blockmaplump[3];
|
||||
|
||||
// clear out mobj chains
|
||||
count = sizeof(*blocklinks)* bmapwidth*bmapheight;
|
||||
blocklinks = Z_Malloc (count,PU_LEVEL, 0);
|
||||
memset (blocklinks, 0, count);
|
||||
}
|
||||
|
||||
|
||||
|
||||
//
|
||||
// P_GroupLines
|
||||
// Builds sector line lists and subsector sector numbers.
|
||||
// Finds block bounding boxes for sectors.
|
||||
//
|
||||
void P_GroupLines (void)
|
||||
{
|
||||
line_t** linebuffer;
|
||||
int i;
|
||||
int j;
|
||||
int total;
|
||||
line_t* li;
|
||||
sector_t* sector;
|
||||
subsector_t* ss;
|
||||
seg_t* seg;
|
||||
fixed_t bbox[4];
|
||||
int block;
|
||||
|
||||
// look up sector number for each subsector
|
||||
ss = subsectors;
|
||||
for (i=0 ; i<numsubsectors ; i++, ss++)
|
||||
{
|
||||
seg = &segs[ss->firstline];
|
||||
ss->sector = seg->sidedef->sector;
|
||||
}
|
||||
|
||||
// count number of lines in each sector
|
||||
li = lines;
|
||||
total = 0;
|
||||
for (i=0 ; i<numlines ; i++, li++)
|
||||
{
|
||||
total++;
|
||||
li->frontsector->linecount++;
|
||||
|
||||
if (li->backsector && li->backsector != li->frontsector)
|
||||
{
|
||||
li->backsector->linecount++;
|
||||
total++;
|
||||
}
|
||||
}
|
||||
|
||||
// build line tables for each sector
|
||||
linebuffer = Z_Malloc (total*4, PU_LEVEL, 0);
|
||||
sector = sectors;
|
||||
for (i=0 ; i<numsectors ; i++, sector++)
|
||||
{
|
||||
M_ClearBox (bbox);
|
||||
sector->lines = linebuffer;
|
||||
li = lines;
|
||||
for (j=0 ; j<numlines ; j++, li++)
|
||||
{
|
||||
if (li->frontsector == sector || li->backsector == sector)
|
||||
{
|
||||
*linebuffer++ = li;
|
||||
M_AddToBox (bbox, li->v1->x, li->v1->y);
|
||||
M_AddToBox (bbox, li->v2->x, li->v2->y);
|
||||
}
|
||||
}
|
||||
if (linebuffer - sector->lines != sector->linecount)
|
||||
I_Error ("P_GroupLines: miscounted");
|
||||
|
||||
// set the degenmobj_t to the middle of the bounding box
|
||||
sector->soundorg.x = (bbox[BOXRIGHT]+bbox[BOXLEFT])/2;
|
||||
sector->soundorg.y = (bbox[BOXTOP]+bbox[BOXBOTTOM])/2;
|
||||
|
||||
// adjust bounding box to map blocks
|
||||
block = (bbox[BOXTOP]-bmaporgy+MAXRADIUS)>>MAPBLOCKSHIFT;
|
||||
block = block >= bmapheight ? bmapheight-1 : block;
|
||||
sector->blockbox[BOXTOP]=block;
|
||||
|
||||
block = (bbox[BOXBOTTOM]-bmaporgy-MAXRADIUS)>>MAPBLOCKSHIFT;
|
||||
block = block < 0 ? 0 : block;
|
||||
sector->blockbox[BOXBOTTOM]=block;
|
||||
|
||||
block = (bbox[BOXRIGHT]-bmaporgx+MAXRADIUS)>>MAPBLOCKSHIFT;
|
||||
block = block >= bmapwidth ? bmapwidth-1 : block;
|
||||
sector->blockbox[BOXRIGHT]=block;
|
||||
|
||||
block = (bbox[BOXLEFT]-bmaporgx-MAXRADIUS)>>MAPBLOCKSHIFT;
|
||||
block = block < 0 ? 0 : block;
|
||||
sector->blockbox[BOXLEFT]=block;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// P_SetupLevel
|
||||
//
|
||||
void
|
||||
P_SetupLevel
|
||||
( int episode,
|
||||
int map,
|
||||
int playermask,
|
||||
skill_t skill)
|
||||
{
|
||||
int i;
|
||||
char lumpname[9];
|
||||
int lumpnum;
|
||||
|
||||
totalkills = totalitems = totalsecret = wminfo.maxfrags = 0;
|
||||
wminfo.partime = 180;
|
||||
for (i=0 ; i<MAXPLAYERS ; i++)
|
||||
{
|
||||
players[i].killcount = players[i].secretcount
|
||||
= players[i].itemcount = 0;
|
||||
}
|
||||
|
||||
// Initial height of PointOfView
|
||||
// will be set by player think.
|
||||
players[consoleplayer].viewz = 1;
|
||||
|
||||
// Make sure all sounds are stopped before Z_FreeTags.
|
||||
S_Start ();
|
||||
|
||||
|
||||
#if 0 // UNUSED
|
||||
if (debugfile)
|
||||
{
|
||||
Z_FreeTags (PU_LEVEL, MAXINT);
|
||||
Z_FileDumpHeap (debugfile);
|
||||
}
|
||||
else
|
||||
#endif
|
||||
Z_FreeTags (PU_LEVEL, PU_PURGELEVEL-1);
|
||||
|
||||
|
||||
// UNUSED W_Profile ();
|
||||
P_InitThinkers ();
|
||||
|
||||
// if working with a devlopment map, reload it
|
||||
W_Reload ();
|
||||
|
||||
// find map name
|
||||
if ( gamemode == commercial)
|
||||
{
|
||||
if (map<10)
|
||||
sprintf (lumpname,"map0%i", map);
|
||||
else
|
||||
sprintf (lumpname,"map%i", map);
|
||||
}
|
||||
else
|
||||
{
|
||||
lumpname[0] = 'E';
|
||||
lumpname[1] = '0' + episode;
|
||||
lumpname[2] = 'M';
|
||||
lumpname[3] = '0' + map;
|
||||
lumpname[4] = 0;
|
||||
}
|
||||
|
||||
lumpnum = W_GetNumForName (lumpname);
|
||||
|
||||
leveltime = 0;
|
||||
|
||||
// note: most of this ordering is important
|
||||
P_LoadBlockMap (lumpnum+ML_BLOCKMAP);
|
||||
P_LoadVertexes (lumpnum+ML_VERTEXES);
|
||||
P_LoadSectors (lumpnum+ML_SECTORS);
|
||||
P_LoadSideDefs (lumpnum+ML_SIDEDEFS);
|
||||
|
||||
P_LoadLineDefs (lumpnum+ML_LINEDEFS);
|
||||
P_LoadSubsectors (lumpnum+ML_SSECTORS);
|
||||
P_LoadNodes (lumpnum+ML_NODES);
|
||||
P_LoadSegs (lumpnum+ML_SEGS);
|
||||
|
||||
rejectmatrix = W_CacheLumpNum (lumpnum+ML_REJECT,PU_LEVEL);
|
||||
P_GroupLines ();
|
||||
|
||||
bodyqueslot = 0;
|
||||
deathmatch_p = deathmatchstarts;
|
||||
P_LoadThings (lumpnum+ML_THINGS);
|
||||
|
||||
// if deathmatch, randomly spawn the active players
|
||||
if (deathmatch)
|
||||
{
|
||||
for (i=0 ; i<MAXPLAYERS ; i++)
|
||||
if (playeringame[i])
|
||||
{
|
||||
players[i].mo = NULL;
|
||||
G_DeathMatchSpawnPlayer (i);
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
// clear special respawning que
|
||||
iquehead = iquetail = 0;
|
||||
|
||||
// set up world state
|
||||
P_SpawnSpecials ();
|
||||
|
||||
// build subsector connect matrix
|
||||
// UNUSED P_ConnectSubsectors ();
|
||||
|
||||
// preload graphics
|
||||
if (precache)
|
||||
R_PrecacheLevel ();
|
||||
|
||||
//printf ("free memory: 0x%x\n", Z_FreeMemory());
|
||||
|
||||
}
|
||||
|
||||
|
||||
|
||||
//
|
||||
// P_Init
|
||||
//
|
||||
void P_Init (void)
|
||||
{
|
||||
P_InitSwitchList ();
|
||||
P_InitPicAnims ();
|
||||
R_InitSprites (sprnames);
|
||||
}
|
||||
|
||||
|
||||
|
||||
Reference in New Issue
Block a user