Line data Source code
1 : /*
2 : Minetest
3 : Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
4 :
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.
9 :
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.
14 :
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.
18 : */
19 :
20 : #ifndef MAPGENV6_HEADER
21 : #define MAPGENV6_HEADER
22 :
23 : #include "mapgen.h"
24 : #include "noise.h"
25 :
26 : #define AVERAGE_MUD_AMOUNT 4
27 : #define DESERT_STONE_BASE -32
28 : #define ICE_BASE 0
29 : #define FREQ_HOT 0.4
30 : #define FREQ_SNOW -0.4
31 : #define FREQ_TAIGA 0.5
32 : #define FREQ_JUNGLE 0.5
33 :
34 : //////////// Mapgen V6 flags
35 : #define MGV6_JUNGLES 0x01
36 : #define MGV6_BIOMEBLEND 0x02
37 : #define MGV6_MUDFLOW 0x04
38 : #define MGV6_SNOWBIOMES 0x08
39 :
40 :
41 : extern FlagDesc flagdesc_mapgen_v6[];
42 :
43 :
44 : enum BiomeV6Type
45 : {
46 : BT_NORMAL,
47 : BT_DESERT,
48 : BT_JUNGLE,
49 : BT_TUNDRA,
50 : BT_TAIGA,
51 : };
52 :
53 :
54 : struct MapgenV6Params : public MapgenSpecificParams {
55 : u32 spflags;
56 : float freq_desert;
57 : float freq_beach;
58 : NoiseParams np_terrain_base;
59 : NoiseParams np_terrain_higher;
60 : NoiseParams np_steepness;
61 : NoiseParams np_height_select;
62 : NoiseParams np_mud;
63 : NoiseParams np_beach;
64 : NoiseParams np_biome;
65 : NoiseParams np_cave;
66 : NoiseParams np_humidity;
67 : NoiseParams np_trees;
68 : NoiseParams np_apple_trees;
69 :
70 : MapgenV6Params();
71 0 : ~MapgenV6Params() {}
72 :
73 : void readParams(const Settings *settings);
74 : void writeParams(Settings *settings) const;
75 : };
76 :
77 :
78 : class MapgenV6 : public Mapgen {
79 : public:
80 : EmergeManager *m_emerge;
81 :
82 : int ystride;
83 : u32 spflags;
84 :
85 : v3s16 node_min;
86 : v3s16 node_max;
87 : v3s16 full_node_min;
88 : v3s16 full_node_max;
89 : v3s16 central_area_size;
90 : int volume_nodes;
91 :
92 : Noise *noise_terrain_base;
93 : Noise *noise_terrain_higher;
94 : Noise *noise_steepness;
95 : Noise *noise_height_select;
96 : Noise *noise_mud;
97 : Noise *noise_beach;
98 : Noise *noise_biome;
99 : Noise *noise_humidity;
100 : NoiseParams *np_cave;
101 : NoiseParams *np_humidity;
102 : NoiseParams *np_trees;
103 : NoiseParams *np_apple_trees;
104 : float freq_desert;
105 : float freq_beach;
106 :
107 : content_t c_stone;
108 : content_t c_dirt;
109 : content_t c_dirt_with_grass;
110 : content_t c_sand;
111 : content_t c_water_source;
112 : content_t c_lava_source;
113 : content_t c_gravel;
114 : content_t c_desert_stone;
115 : content_t c_desert_sand;
116 : content_t c_dirt_with_snow;
117 : content_t c_snow;
118 : content_t c_snowblock;
119 : content_t c_ice;
120 :
121 : content_t c_cobble;
122 : content_t c_mossycobble;
123 : content_t c_stair_cobble;
124 :
125 : MapgenV6(int mapgenid, MapgenParams *params, EmergeManager *emerge);
126 : ~MapgenV6();
127 :
128 : void makeChunk(BlockMakeData *data);
129 : int getGroundLevelAtPoint(v2s16 p);
130 :
131 : float baseTerrainLevel(float terrain_base, float terrain_higher,
132 : float steepness, float height_select);
133 : virtual float baseTerrainLevelFromNoise(v2s16 p);
134 : virtual float baseTerrainLevelFromMap(v2s16 p);
135 : virtual float baseTerrainLevelFromMap(int index);
136 :
137 : s16 find_stone_level(v2s16 p2d);
138 : bool block_is_underground(u64 seed, v3s16 blockpos);
139 : s16 find_ground_level_from_noise(u64 seed, v2s16 p2d, s16 precision);
140 :
141 : float getHumidity(v2s16 p);
142 : float getTreeAmount(v2s16 p);
143 : bool getHaveAppleTree(v2s16 p);
144 : float getMudAmount(v2s16 p);
145 : virtual float getMudAmount(int index);
146 : bool getHaveBeach(v2s16 p);
147 : bool getHaveBeach(int index);
148 : BiomeV6Type getBiome(v2s16 p);
149 : BiomeV6Type getBiome(int index, v2s16 p);
150 :
151 : u32 get_blockseed(u64 seed, v3s16 p);
152 :
153 : virtual void calculateNoise();
154 : int generateGround();
155 : void addMud();
156 : void flowMud(s16 &mudflow_minpos, s16 &mudflow_maxpos);
157 : void growGrass();
158 : void placeTreesAndJungleGrass();
159 : virtual void generateCaves(int max_stone_y);
160 : };
161 :
162 :
163 1 : struct MapgenFactoryV6 : public MapgenFactory {
164 0 : Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge)
165 : {
166 0 : return new MapgenV6(mgid, params, emerge);
167 : };
168 :
169 0 : MapgenSpecificParams *createMapgenParams()
170 : {
171 0 : return new MapgenV6Params();
172 : };
173 : };
174 :
175 :
176 : #endif
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