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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:
* Refresh, visplane stuff (floor, ceilings).
*
*-----------------------------------------------------------------------------*/
#ifndef __R_PLANE__
#define __R_PLANE__
#include "r_data.h"
#ifdef __GNUG__
#pragma interface
#endif
/* killough 10/98: special mask indicates sky flat comes from sidedef */
#define PL_SKYFLAT (0x80000000)
/* Visplane related. */
extern short *lastopening;
extern short floorclip[], ceilingclip[];
extern fixed_t yslope[], distscale[];
void R_InitPlanes(void);
void R_ClearPlanes(void);
void R_DrawPlanes (void);
visplane_t *R_FindPlane(
fixed_t height,
int picnum,
int lightlevel,
fixed_t xoffs, /* killough 2/28/98: add x-y offsets */
fixed_t yoffs
);
visplane_t *R_CheckPlane(visplane_t *pl, int start, int stop);
visplane_t *R_DupPlane(const visplane_t *pl, int start, int stop);
#endif
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