3 Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser 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.
20 #ifndef CAVEGEN_HEADER
21 #define CAVEGEN_HEADER
23 #define VMANIP_FLAG_CAVE VOXELFLAG_CHECKED1
24 #define DEFAULT_LAVA_DEPTH (-256)
28 class CavesRandomWalk {
32 INodeDefManager *ndef;
36 NoiseParams *np_caveliquids;
38 s16 min_tunnel_diameter;
39 s16 max_tunnel_diameter;
40 u16 tunnel_routepoints;
42 int part_max_length_rs;
44 bool large_cave_is_flat;
51 v3f orp; // starting point, relative to caved space
52 v3s16 of; // absolute coordinates of caved space
53 v3s16 ar; // allowed route area
54 s16 rs; // tunnel radius size
62 content_t c_water_source;
63 content_t c_lava_source;
69 CavesRandomWalk(Mapgen *mg, PseudoRandom *ps);
70 void makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height);
71 void makeTunnel(bool dirswitch);
72 void carveRoute(v3f vec, float f, bool randomize_xz);
76 CavesV6 is the original version of caves used with Mapgen V6.
78 Though it uses the same fundamental algorithm as CavesRandomWalk, it is made
79 separate to preserve the exact sequence of PseudoRandom calls - any change
80 to this ordering results in the output being radically different.
81 Because caves in Mapgen V6 are responsible for a large portion of the basic
82 terrain shape, modifying this will break our contract of reverse
83 compatibility for a 'stable' mapgen such as V6.
86 *** DO NOT TOUCH THIS CLASS UNLESS YOU KNOW WHAT YOU ARE DOING ***
92 INodeDefManager *ndef;
94 s16 min_tunnel_diameter;
95 s16 max_tunnel_diameter;
96 u16 tunnel_routepoints;
98 int part_max_length_rs;
101 bool large_cave_is_flat;
107 v3f orp; // starting point, relative to caved space
108 v3s16 of; // absolute coordinates of caved space
109 v3s16 ar; // allowed route area
110 s16 rs; // tunnel radius size
119 content_t c_water_source;
120 content_t c_lava_source;
124 CavesV6(MapgenV6 *mg, PseudoRandom *ps, PseudoRandom *ps2, bool large_cave);
125 void makeCave(v3s16 nmin, v3s16 nmax, int max_stone_height);
126 void makeTunnel(bool dirswitch);
127 void carveRoute(v3f vec, float f, bool randomize_xz, bool tunnel_above_ground);