// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // $Id:$ // // Copyright (C) 1993-1996 by id Software, Inc. // // This source is available for distribution and/or modification // only under the terms of the DOOM Source Code License as // published by id Software. All rights reserved. // // The source is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License // for more details. // // $Log:$ // // DESCRIPTION: // Do all the WAD I/O, get map description, // set up initial state and misc. LUTs. // //----------------------------------------------------------------------------- #include "doom_config.h" #include "z_zone.h" #include "m_swap.h" #include "m_bbox.h" #include "g_game.h" #include "i_system.h" #include "w_wad.h" #include "doomdef.h" #include "p_local.h" #include "s_sound.h" #include "doomstat.h" // Maintain single and multi player starting spots. #define MAX_DEATHMATCH_STARTS 10 // // MAP related Lookup tables. // Store VERTEXES, LINEDEFS, SIDEDEFS, etc. // int numvertexes; vertex_t* vertexes; int numsegs; seg_t* segs; int numsectors; sector_t* sectors; int numsubsectors; subsector_t* subsectors; int numnodes; node_t* nodes; int numlines; line_t* lines; int numsides; side_t* sides; // BLOCKMAP // Created from axis aligned bounding box // of the map, a rectangular array of // blocks of size ... // Used to speed up collision detection // by spatial subdivision in 2D. // // Blockmap size. int bmapwidth; int bmapheight; // size in mapblocks short* blockmap; // int for larger maps // offsets in blockmap are from here short* blockmaplump; // origin of block map fixed_t bmaporgx; fixed_t bmaporgy; // for thing chains mobj_t** blocklinks; // REJECT // For fast sight rejection. // Speeds up enemy AI by skipping detailed // LineOf Sight calculation. // Without special effect, this could be // used as a PVS lookup as well. // byte* rejectmatrix; mapthing_t deathmatchstarts[MAX_DEATHMATCH_STARTS]; mapthing_t* deathmatch_p; mapthing_t playerstarts[MAXPLAYERS]; void P_SpawnMapThing(mapthing_t* mthing); // // P_LoadVertexes // void P_LoadVertexes(int lump) { byte* data; int i; mapvertex_t* ml; vertex_t* li; // Determine number of lumps: // total lump length / vertex record length. numvertexes = W_LumpLength(lump) / sizeof(mapvertex_t); // Allocate zone memory for buffer. vertexes = Z_Malloc(numvertexes * sizeof(vertex_t), PU_LEVEL, 0); // Load data into cache. data = W_CacheLumpNum(lump, PU_STATIC); ml = (mapvertex_t*)data; li = vertexes; // Copy and convert vertex coordinates, // internal representation as fixed. for (i = 0; i < numvertexes; i++, li++, ml++) { li->x = SHORT(ml->x) << FRACBITS; li->y = SHORT(ml->y) << FRACBITS; } // Free buffer memory. Z_Free(data); } // // P_LoadSegs // void P_LoadSegs(int lump) { byte* data; int i; mapseg_t* ml; seg_t* li; line_t* ldef; int linedef; int side; numsegs = W_LumpLength(lump) / sizeof(mapseg_t); segs = Z_Malloc(numsegs * sizeof(seg_t), PU_LEVEL, 0); doom_memset(segs, 0, numsegs * sizeof(seg_t)); data = W_CacheLumpNum(lump, PU_STATIC); ml = (mapseg_t*)data; li = segs; for (i = 0; i < numsegs; i++, li++, ml++) { li->v1 = &vertexes[SHORT(ml->v1)]; li->v2 = &vertexes[SHORT(ml->v2)]; li->angle = (SHORT(ml->angle)) << 16; li->offset = (SHORT(ml->offset)) << 16; linedef = SHORT(ml->linedef); ldef = &lines[linedef]; li->linedef = ldef; side = SHORT(ml->side); li->sidedef = &sides[ldef->sidenum[side]]; li->frontsector = sides[ldef->sidenum[side]].sector; if (ldef->flags & ML_TWOSIDED) li->backsector = sides[ldef->sidenum[side ^ 1]].sector; else li->backsector = 0; } Z_Free(data); } // // P_LoadSubsectors // void P_LoadSubsectors(int lump) { byte* data; int i; mapsubsector_t* ms; subsector_t* ss; numsubsectors = W_LumpLength(lump) / sizeof(mapsubsector_t); subsectors = Z_Malloc(numsubsectors * sizeof(subsector_t), PU_LEVEL, 0); data = W_CacheLumpNum(lump, PU_STATIC); ms = (mapsubsector_t*)data; doom_memset(subsectors, 0, numsubsectors * sizeof(subsector_t)); ss = subsectors; for (i = 0; i < numsubsectors; i++, ss++, ms++) { ss->numlines = SHORT(ms->numsegs); ss->firstline = SHORT(ms->firstseg); } Z_Free(data); } // // P_LoadSectors // void P_LoadSectors(int lump) { byte* data; int i; mapsector_t* ms; sector_t* ss; numsectors = W_LumpLength(lump) / sizeof(mapsector_t); sectors = Z_Malloc(numsectors * sizeof(sector_t), PU_LEVEL, 0); doom_memset(sectors, 0, numsectors * sizeof(sector_t)); data = W_CacheLumpNum(lump, PU_STATIC); ms = (mapsector_t*)data; ss = sectors; for (i = 0; i < numsectors; i++, ss++, ms++) { ss->floorheight = SHORT(ms->floorheight) << FRACBITS; ss->ceilingheight = SHORT(ms->ceilingheight) << FRACBITS; ss->floorpic = R_FlatNumForName(ms->floorpic); ss->ceilingpic = R_FlatNumForName(ms->ceilingpic); ss->lightlevel = SHORT(ms->lightlevel); ss->special = SHORT(ms->special); ss->tag = SHORT(ms->tag); ss->thinglist = 0; } Z_Free(data); } // // P_LoadNodes // void P_LoadNodes(int lump) { byte* data; int i; int j; int k; mapnode_t* mn; node_t* no; numnodes = W_LumpLength(lump) / sizeof(mapnode_t); nodes = Z_Malloc(numnodes * sizeof(node_t), PU_LEVEL, 0); data = W_CacheLumpNum(lump, PU_STATIC); mn = (mapnode_t*)data; no = nodes; for (i = 0; i < numnodes; i++, no++, mn++) { no->x = SHORT(mn->x) << FRACBITS; no->y = SHORT(mn->y) << FRACBITS; no->dx = SHORT(mn->dx) << FRACBITS; no->dy = SHORT(mn->dy) << FRACBITS; for (j = 0; j < 2; j++) { no->children[j] = SHORT(mn->children[j]); for (k = 0; k < 4; k++) no->bbox[j][k] = SHORT(mn->bbox[j][k]) << FRACBITS; } } Z_Free(data); } // // P_LoadThings // void P_LoadThings(int lump) { byte* data; int i; mapthing_t* mt; int numthings; doom_boolean spawn; data = W_CacheLumpNum(lump, PU_STATIC); numthings = W_LumpLength(lump) / sizeof(mapthing_t); mt = (mapthing_t*)data; for (i = 0; i < numthings; i++, mt++) { spawn = true; // Do not spawn cool, new monsters if !commercial if (gamemode != commercial) { switch (mt->type) { case 68: // Arachnotron case 64: // Archvile case 88: // Boss Brain case 89: // Boss Shooter case 69: // Hell Knight case 67: // Mancubus case 71: // Pain Elemental case 65: // Former Human Commando case 66: // Revenant case 84: // Wolf SS spawn = false; break; } } if (spawn == false) break; // Do spawn all other stuff. mt->x = SHORT(mt->x); mt->y = SHORT(mt->y); mt->angle = SHORT(mt->angle); mt->type = SHORT(mt->type); mt->options = SHORT(mt->options); P_SpawnMapThing(mt); } Z_Free(data); } // // P_LoadLineDefs // Also counts secret lines for intermissions. // void P_LoadLineDefs(int lump) { byte* data; int i; maplinedef_t* mld; line_t* ld; vertex_t* v1; vertex_t* v2; numlines = W_LumpLength(lump) / sizeof(maplinedef_t); lines = Z_Malloc(numlines * sizeof(line_t), PU_LEVEL, 0); doom_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); doom_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); doom_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 * sizeof(line_t*), 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("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(); 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) { //doom_sprintf(lumpname, "map0%i", map); doom_strcpy(lumpname, "map0"); doom_concat(lumpname, doom_itoa(map, 10)); } else { //doom_sprintf(lumpname, "map%i", map); doom_strcpy(lumpname, "map"); doom_concat(lumpname, doom_itoa(map, 10)); } } 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 = 0; G_DeathMatchSpawnPlayer(i); } } // clear special respawning que iquehead = iquetail = 0; // set up world state P_SpawnSpecials(); // preload graphics if (precache) R_PrecacheLevel(); } // // P_Init // void P_Init(void) { P_InitSwitchList(); P_InitPicAnims(); R_InitSprites(sprnames); }