1 /* Emacs style mode select -*- C++ -*- 2 *----------------------------------------------------------------------------- 3 * 4 * 5 * PrBoom: a Doom port merged with LxDoom and LSDLDoom 6 * based on BOOM, a modified and improved DOOM engine 7 * Copyright (C) 1999 by 8 * id Software, Chi Hoang, Lee Killough, Jim Flynn, Rand Phares, Ty Halderman 9 * Copyright (C) 1999-2000 by 10 * Jess Haas, Nicolas Kalkhof, Colin Phipps, Florian Schulze 11 * Copyright 2005, 2006 by 12 * Florian Schulze, Colin Phipps, Neil Stevens, Andrey Budko 13 * 14 * This program is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU General Public License 16 * as published by the Free Software Foundation; either version 2 17 * of the License, or (at your option) any later version. 18 * 19 * This program is distributed in the hope that it will be useful, 20 * but WITHOUT ANY WARRANTY; without even the implied warranty of 21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22 * GNU General Public License for more details. 23 * 24 * You should have received a copy of the GNU General Public License 25 * along with this program; if not, write to the Free Software 26 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 27 * 02111-1307, USA. 28 * 29 * DESCRIPTION: 30 * Refresh, visplane stuff (floor, ceilings). 31 * 32 *-----------------------------------------------------------------------------*/ 33 34 #ifndef __R_PLANE__ 35 #define __R_PLANE__ 36 37 #include "r_data.h" 38 39 /* killough 10/98: special mask indicates sky flat comes from sidedef */ 40 #define PL_SKYFLAT (0x80000000) 41 42 /* Visplane related. */ 43 extern int *lastopening; // dropoff overflow 44 45 extern int floorclip[], ceilingclip[]; // dropoff overflow 46 extern fixed_t yslope[], distscale[]; 47 48 void R_InitPlanes(void); 49 void R_ClearPlanes(void); 50 void R_DrawPlanes (void); 51 52 visplane_t *R_FindPlane( 53 fixed_t height, 54 int picnum, 55 int lightlevel, 56 fixed_t xoffs, /* killough 2/28/98: add x-y offsets */ 57 fixed_t yoffs 58 ); 59 60 visplane_t *R_CheckPlane(visplane_t *pl, int start, int stop); 61 visplane_t *R_DupPlane(const visplane_t *pl, int start, int stop); 62 63 #endif 64