// 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__


// Visplane related.
extern  short * lastopening;


typedef void (*planefunction_t) (int top, int bottom);

extern short		floorclip[SCREENWIDTH];
extern short		ceilingclip[SCREENWIDTH];

extern fixed_t		yslope[SCREENHEIGHT];
extern fixed_t		distscale[SCREENWIDTH];

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 );

// #define MAXVISPLANES	128
#define MAXVISPLANES	512   // andrewj: increased for Visplane Explorer

// #define MAXOPENINGS	SCREENWIDTH*64
#define MAXOPENINGS	SCREENWIDTH*256  // andrewj: increased for Visplane Explorer

extern int total_visplanes;
extern int total_drawsegs;
extern int total_openings;
extern int   max_solidsegs;


#endif