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.
24 #include "network/networkprotocol.h"
26 #include "util/container.h"
27 #include "mapgen/mapgen.h" // for MapgenParams
30 #define BLOCK_EMERGE_ALLOW_GEN (1 << 0)
31 #define BLOCK_EMERGE_FORCE_QUEUE (1 << 1)
33 #define EMERGE_DBG_OUT(x) { \
34 if (enable_mapgen_debug_info) \
35 infostream << "EmergeThread: " x << std::endl; \
44 class DecorationManager;
45 class SchematicManager;
49 // Structure containing inputs/outputs for chunk generation
50 struct BlockMakeData {
51 MMVManip *vmanip = nullptr;
55 UniqueQueue<v3s16> transforming_liquid;
56 const NodeDefManager *nodedef = nullptr;
58 BlockMakeData() = default;
60 ~BlockMakeData() { delete vmanip; }
63 // Result from processing an item on the emerge queue
73 typedef void (*EmergeCompletionCallback)(
74 v3s16 blockpos, EmergeAction action, void *param);
78 EmergeCompletionCallback,
83 struct BlockEmergeData {
86 EmergeCallbackList callbacks;
90 friend class EmergeManager;
92 EmergeParams() = delete;
94 DISABLE_CLASS_COPY(EmergeParams);
96 const NodeDefManager *ndef; // shared
97 bool enable_mapgen_debug_info;
100 const std::set<u32> *gen_notify_on_deco_ids; // shared
103 BiomeManager *biomemgr;
105 DecorationManager *decomgr;
106 SchematicManager *schemmgr;
109 EmergeParams(EmergeManager *parent, const BiomeGen *biomegen,
110 const BiomeManager *biomemgr,
111 const OreManager *oremgr, const DecorationManager *decomgr,
112 const SchematicManager *schemmgr);
115 class EmergeManager {
116 /* The mod API needs unchecked access to allow:
117 * - using decomgr or oremgr to place decos/ores
118 * - using schemmgr to load and place schematics
120 friend class ModApiMapgen;
122 const NodeDefManager *ndef;
123 bool enable_mapgen_debug_info;
126 u32 gen_notify_on = 0;
127 std::set<u32> gen_notify_on_deco_ids;
129 // Parameters passed to mapgens owned by ServerMap
130 // TODO(hmmmm): Remove this after mapgen helper methods using them
131 // are moved to ServerMap
132 MapgenParams *mgparams;
134 // Hackish workaround:
135 // For now, EmergeManager must hold onto a ptr to the Map's setting manager
136 // since the Map can only be accessed through the Environment, and the
137 // Environment is not created until after script initialization.
138 MapSettingsManager *map_settings_mgr;
141 EmergeManager(Server *server);
143 DISABLE_CLASS_COPY(EmergeManager);
145 const BiomeGen *getBiomeGen() const { return biomegen; }
147 // no usage restrictions
148 const BiomeManager *getBiomeManager() const { return biomemgr; }
149 const OreManager *getOreManager() const { return oremgr; }
150 const DecorationManager *getDecorationManager() const { return decomgr; }
151 const SchematicManager *getSchematicManager() const { return schemmgr; }
152 // only usable before mapgen init
153 BiomeManager *getWritableBiomeManager();
154 OreManager *getWritableOreManager();
155 DecorationManager *getWritableDecorationManager();
156 SchematicManager *getWritableSchematicManager();
158 void initMapgens(MapgenParams *mgparams);
164 bool enqueueBlockEmerge(
168 bool ignore_queue_limits=false);
170 bool enqueueBlockEmergeEx(
174 EmergeCompletionCallback callback,
175 void *callback_param);
177 bool isBlockInQueue(v3s16 pos);
179 Mapgen *getCurrentMapgen();
181 // Mapgen helpers methods
182 int getSpawnLevelAtPoint(v2s16 p);
183 bool isBlockUnderground(v3s16 blockpos);
185 static v3s16 getContainingChunk(v3s16 blockpos, s16 chunksize);
188 std::vector<Mapgen *> m_mapgens;
189 std::vector<EmergeThread *> m_threads;
190 bool m_threads_active = false;
192 std::mutex m_queue_mutex;
193 std::map<v3s16, BlockEmergeData> m_blocks_enqueued;
194 std::unordered_map<u16, u32> m_peer_queue_count;
197 u32 m_qlimit_diskonly;
198 u32 m_qlimit_generate;
200 // Managers of various map generation-related components
201 // Note that each Mapgen gets a copy(!) of these to work with
203 BiomeManager *biomemgr;
205 DecorationManager *decomgr;
206 SchematicManager *schemmgr;
208 // Requires m_queue_mutex held
209 EmergeThread *getOptimalThread();
211 bool pushBlockEmergeData(
215 EmergeCompletionCallback callback,
216 void *callback_param,
217 bool *entry_already_exists);
219 bool popBlockEmergeData(v3s16 pos, BlockEmergeData *bedata);
221 friend class EmergeThread;