3 Copyright (C) 2010-2013 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 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.
26 #include "util/string.h"
27 #include "util/container.h"
29 #define DEFAULT_MAPGEN "v6"
31 /////////////////// Mapgen flags
34 #define MG_DUNGEONS 0x04
37 #define MG_DECORATIONS 0x20
39 typedef u8 biome_t; // copy from mg_biome.h to avoid an unnecessary include
43 class INodeDefManager;
45 extern FlagDesc flagdesc_mapgen[];
46 extern FlagDesc flagdesc_gennotify[];
54 class VoxelManipulator;
73 GENNOTIFY_LARGECAVE_BEGIN,
74 GENNOTIFY_LARGECAVE_END,
79 // TODO(hmmmm/paramat): make stone type selection dynamic
86 struct GenNotifyEvent {
92 class GenerateNotifier {
95 GenerateNotifier(u32 notify_on, std::set<u32> *notify_on_deco_ids);
97 void setNotifyOn(u32 notify_on);
98 void setNotifyOnDecoIds(std::set<u32> *notify_on_deco_ids);
100 bool addEvent(GenNotifyType type, v3s16 pos, u32 id=0);
101 void getEvents(std::map<std::string, std::vector<v3s16> > &event_map,
102 bool peek_events=false);
106 std::set<u32> *m_notify_on_deco_ids;
107 std::list<GenNotifyEvent> m_notify_events;
110 struct MapgenSpecificParams {
111 virtual void readParams(const Settings *settings) = 0;
112 virtual void writeParams(Settings *settings) const = 0;
113 virtual ~MapgenSpecificParams() {}
116 struct MapgenParams {
123 BiomeParams *bparams;
124 MapgenSpecificParams *sparams;
127 mg_name(DEFAULT_MAPGEN),
131 flags(MG_CAVES | MG_LIGHT | MG_DECORATIONS),
137 virtual ~MapgenParams();
139 void load(const Settings &settings);
140 void save(Settings &settings) const;
145 Generic interface for map generators. All mapgens must inherit this class.
146 If a feature exposed by a public member pointer is not supported by a
147 certain mapgen, it must be set to NULL.
149 Apart from makeChunk, getGroundLevelAtPoint, and getSpawnLevelAtPoint, all
150 methods can be used by constructing a Mapgen base class and setting the
151 appropriate public members (e.g. vm, ndef, and so on).
162 INodeDefManager *ndef;
170 GenerateNotifier gennotify;
173 Mapgen(int mapgenid, MapgenParams *params, EmergeManager *emerge);
176 static u32 getBlockSeed(v3s16 p, s32 seed);
177 static u32 getBlockSeed2(v3s16 p, s32 seed);
178 s16 findGroundLevelFull(v2s16 p2d);
179 s16 findGroundLevel(v2s16 p2d, s16 ymin, s16 ymax);
180 s16 findLiquidSurface(v2s16 p2d, s16 ymin, s16 ymax);
181 void updateHeightmap(v3s16 nmin, v3s16 nmax);
182 void updateLiquid(UniqueQueue<v3s16> *trans_liquid, v3s16 nmin, v3s16 nmax);
184 void setLighting(u8 light, v3s16 nmin, v3s16 nmax);
185 void lightSpread(VoxelArea &a, v3s16 p, u8 light);
186 void calcLighting(v3s16 nmin, v3s16 nmax, v3s16 full_nmin, v3s16 full_nmax,
187 bool propagate_shadow = true);
188 void propagateSunlight(v3s16 nmin, v3s16 nmax, bool propagate_shadow);
189 void spreadLight(v3s16 nmin, v3s16 nmax);
191 virtual void makeChunk(BlockMakeData *data) {}
192 virtual int getGroundLevelAtPoint(v2s16 p) { return 0; }
194 // getSpawnLevelAtPoint() is a function within each mapgen that returns a
195 // suitable y co-ordinate for player spawn ('suitable' usually meaning
196 // within 16 nodes of water_level). If a suitable spawn level cannot be
197 // found at the specified (X, Z) 'MAX_MAP_GENERATION_LIMIT' is returned to
198 // signify this and to cause Server::findSpawnPos() to try another (X, Z).
199 virtual int getSpawnLevelAtPoint(v2s16 p) { return 0; }
202 // isLiquidHorizontallyFlowable() is a helper function for updateLiquid()
203 // that checks whether there are floodable nodes without liquid beneath
204 // the node at index vi.
205 inline bool isLiquidHorizontallyFlowable(u32 vi, v3s16 em);
206 DISABLE_CLASS_COPY(Mapgen);
210 MapgenBasic is a Mapgen implementation that handles basic functionality
211 the majority of conventional mapgens will probably want to use, but isn't
212 generic enough to be included as part of the base Mapgen class (such as
213 generating biome terrain over terrain node skeletons, generating caves,
216 Inherit MapgenBasic instead of Mapgen to add this basic functionality to
217 your mapgen without having to reimplement it. Feel free to override any of
218 these methods if you desire different or more advanced behavior.
220 Note that you must still create your own generateTerrain implementation when
221 inheriting MapgenBasic.
223 class MapgenBasic : public Mapgen {
225 MapgenBasic(int mapgenid, MapgenParams *params, EmergeManager *emerge);
226 virtual ~MapgenBasic();
228 virtual void generateCaves(s16 max_stone_y, s16 large_cave_depth);
229 virtual void generateDungeons(s16 max_stone_y, MgStoneType stone_type);
230 virtual MgStoneType generateBiomes();
231 virtual void dustTopNodes();
234 EmergeManager *m_emerge;
235 BiomeManager *m_bmgr;
237 Noise *noise_filler_depth;
244 // Content required for generateBiomes
246 content_t c_water_source;
247 content_t c_river_water_source;
248 content_t c_desert_stone;
249 content_t c_sandstone;
251 // Content required for generateDungeons
253 content_t c_stair_cobble;
254 content_t c_mossycobble;
255 content_t c_sandstonebrick;
256 content_t c_stair_sandstonebrick;
265 NoiseParams np_cave1;
266 NoiseParams np_cave2;
270 struct MapgenFactory {
271 virtual Mapgen *createMapgen(int mgid, MapgenParams *params,
272 EmergeManager *emerge) = 0;
273 virtual MapgenSpecificParams *createMapgenParams() = 0;
274 virtual ~MapgenFactory() {}