gzdoom/code/R_plane.h

// 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.
//
// 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;
extern short			*ceilingclip;

extern fixed_t			*yslopetab;		// [RH] Added for freelook. ylook points into it
extern fixed_t			*yslope;
extern fixed_t			*distscale;

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,
  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 );


// [RH] Added for multires support
BOOL R_PlaneInitData (void);


#endif
//-----------------------------------------------------------------------------
//
// $Log:$
//
//-----------------------------------------------------------------------------