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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005 Simon Howard
//
// 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"
// Visplane related.
extern short* lastopening;
typedef void (*planefunction_t) (int top, int bottom);
extern planefunction_t floorfunc;
extern planefunction_t ceilingfunc_t;
extern short floorclip[SCREENWIDTH];
extern short ceilingclip[SCREENWIDTH];
extern fixed_t yslope[SCREENHEIGHT];
extern fixed_t distscale[SCREENWIDTH];
void R_InitPlanes (void);
void R_ClearPlanes (void);
void
R_MapPlane
( int y,
int x1,
int x2 );
void
R_MakeSpans
( int x,
int t1,
int b1,
int t2,
int b2 );
void R_DrawPlanes (void);
visplane_t*
R_FindPlane
( fixed_t height,
int picnum,
int lightlevel );
visplane_t*
R_CheckPlane
( visplane_t* pl,
int start,
int stop );
#endif
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