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90 lines
3 KiB
C
90 lines
3 KiB
C
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/* Emacs style mode select -*- C++ -*-
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*-----------------------------------------------------------------------------
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*
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*
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* PrBoom: a Doom port merged with LxDoom and LSDLDoom
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* based on BOOM, a modified and improved DOOM engine
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* Copyright (C) 1999 by
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* id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman
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* Copyright (C) 1999-2000 by
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* Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze
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* Copyright 2005, 2006 by
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* Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*
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* DESCRIPTION:
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* Map utility functions
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*
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*-----------------------------------------------------------------------------*/
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#ifndef __P_MAPUTL__
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#define __P_MAPUTL__
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#include "r_defs.h"
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/* mapblocks are used to check movement against lines and things */
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#define MAPBLOCKUNITS 128
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#define MAPBLOCKSIZE (MAPBLOCKUNITS*FRACUNIT)
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#define MAPBLOCKSHIFT (FRACBITS+7)
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#define MAPBMASK (MAPBLOCKSIZE-1)
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#define MAPBTOFRAC (MAPBLOCKSHIFT-FRACBITS)
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#define PT_ADDLINES 1
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#define PT_ADDTHINGS 2
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#define PT_EARLYOUT 4
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typedef struct {
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fixed_t x;
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fixed_t y;
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fixed_t dx;
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fixed_t dy;
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} divline_t;
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typedef struct {
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fixed_t frac; /* along trace line */
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boolean isaline;
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union {
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mobj_t* thing;
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line_t* line;
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} d;
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} intercept_t;
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typedef boolean (*traverser_t)(intercept_t *in);
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fixed_t CONSTFUNC P_AproxDistance (fixed_t dx, fixed_t dy);
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int PUREFUNC P_PointOnLineSide (fixed_t x, fixed_t y, const line_t *line);
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int PUREFUNC P_BoxOnLineSide (const fixed_t *tmbox, const line_t *ld);
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fixed_t PUREFUNC P_InterceptVector (const divline_t *v2, const divline_t *v1);
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/* cph - old compatibility version below */
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fixed_t PUREFUNC P_InterceptVector2(const divline_t *v2, const divline_t *v1);
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void P_LineOpening (const line_t *linedef);
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void P_UnsetThingPosition(mobj_t *thing);
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void P_SetThingPosition(mobj_t *thing);
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boolean P_BlockLinesIterator (int x, int y, boolean func(line_t *));
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boolean P_BlockThingsIterator(int x, int y, boolean func(mobj_t *));
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boolean P_PathTraverse(fixed_t x1, fixed_t y1, fixed_t x2, fixed_t y2,
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int flags, boolean trav(intercept_t *));
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extern fixed_t opentop;
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extern fixed_t openbottom;
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extern fixed_t openrange;
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extern fixed_t lowfloor;
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extern divline_t trace;
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#endif /* __P_MAPUTL__ */
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