3 Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License along
16 with this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
23 #include "common_irrlicht.h"
26 Lower level lighting stuff
29 // This directly sets the range of light
31 // Light is stored as 4 bits, thus 15 is the maximum.
32 // This brightness is reserved for sunlight
35 inline u8 diminish_light(u8 light)
39 if(light >= LIGHT_MAX)
45 inline u8 diminish_light(u8 light, u8 distance)
49 return light - distance;
52 inline u8 undiminish_light(u8 light)
54 // We don't know if light should undiminish from this particular 0.
55 // Thus, keep it at 0.
58 if(light == LIGHT_MAX)
64 extern u8 light_decode_table[LIGHT_MAX+1];
66 inline u8 decode_light(u8 light)
68 if(light == LIGHT_SUN)
69 return light_decode_table[LIGHT_MAX];
74 return light_decode_table[light];