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 * Sky rendering. The DOOM sky is a texture map like any
31 * wall, wrapping around. A 1024 columns equal 360 degrees.
32 * The default sky map is 256 columns and repeats 4 times
33 * on a 320 screen?
34 *
35 *-----------------------------------------------------------------------------*/
36
37 #ifdef __GNUG__
38 #pragma implementation "r_sky.h"
39 #endif
40 #include "r_sky.h"
41
42 //
43 // sky mapping
44 //
45 int skyflatnum;
46 int skytexture;
47 int skytexturemid;
48
49 //
50 // R_InitSkyMap
51 // Called whenever the view size changes.
52 //
R_InitSkyMap(void)53 void R_InitSkyMap (void)
54 {
55 skytexturemid = 100*FRACUNIT;
56 }
57