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.
26 #include "util/container.h"
27 #include "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) do { \
34 if (enable_mapgen_debug_info) \
35 infostream << "EmergeThread: " x << std::endl; \
39 class INodeDefManager;
44 class DecorationManager;
45 class SchematicManager;
48 // Structure containing inputs/outputs for chunk generation
49 struct BlockMakeData {
50 MMVManip *vmanip = nullptr;
54 v3s16 blockpos_requested;
55 UniqueQueue<v3s16> transforming_liquid;
56 INodeDefManager *nodedef = nullptr;
59 ~BlockMakeData() { delete vmanip; }
62 // Result from processing an item on the emerge queue
72 typedef void (*EmergeCompletionCallback)(
73 v3s16 blockpos, EmergeAction action, void *param);
77 EmergeCompletionCallback,
82 struct BlockEmergeData {
85 EmergeCallbackList callbacks;
90 INodeDefManager *ndef;
91 bool enable_mapgen_debug_info;
94 u32 gen_notify_on = 0;
95 std::set<u32> gen_notify_on_deco_ids;
97 // Parameters passed to mapgens owned by ServerMap
98 // TODO(hmmmm): Remove this after mapgen helper methods using them
99 // are moved to ServerMap
100 MapgenParams *mgparams;
102 // Hackish workaround:
103 // For now, EmergeManager must hold onto a ptr to the Map's setting manager
104 // since the Map can only be accessed through the Environment, and the
105 // Environment is not created until after script initialization.
106 MapSettingsManager *map_settings_mgr;
108 // Managers of various map generation-related components
109 BiomeManager *biomemgr;
111 DecorationManager *decomgr;
112 SchematicManager *schemmgr;
115 EmergeManager(Server *server);
117 DISABLE_CLASS_COPY(EmergeManager);
119 bool initMapgens(MapgenParams *mgparams);
125 bool enqueueBlockEmerge(
129 bool ignore_queue_limits=false);
131 bool enqueueBlockEmergeEx(
135 EmergeCompletionCallback callback,
136 void *callback_param);
138 v3s16 getContainingChunk(v3s16 blockpos);
140 Mapgen *getCurrentMapgen();
142 // Mapgen helpers methods
143 int getSpawnLevelAtPoint(v2s16 p);
144 int getGroundLevelAtPoint(v2s16 p);
145 bool isBlockUnderground(v3s16 blockpos);
147 static v3s16 getContainingChunk(v3s16 blockpos, s16 chunksize);
150 std::vector<Mapgen *> m_mapgens;
151 std::vector<EmergeThread *> m_threads;
152 bool m_threads_active = false;
154 std::mutex m_queue_mutex;
155 std::map<v3s16, BlockEmergeData> m_blocks_enqueued;
156 std::unordered_map<u16, u16> m_peer_queue_count;
159 u16 m_qlimit_diskonly;
160 u16 m_qlimit_generate;
162 // Requires m_queue_mutex held
163 EmergeThread *getOptimalThread();
165 bool pushBlockEmergeData(
169 EmergeCompletionCallback callback,
170 void *callback_param,
171 bool *entry_already_exists);
173 bool popBlockEmergeData(v3s16 pos, BlockEmergeData *bedata);
175 friend class EmergeThread;