3 Copyright (C) 2010-2017 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.
22 #include "activeobject.h"
23 #include "environment.h"
26 #include "server/activeobjectmgr.h"
27 #include "util/numeric.h"
28 #include "util/metricsbackend.h"
40 class ServerEnvironment;
41 class ActiveBlockModifier;
43 class ServerActiveObject;
45 class ServerScripting;
48 {Active, Loading} block modifier interface.
50 These are fed into ServerEnvironment at initialization time;
51 ServerEnvironment handles deleting them.
54 class ActiveBlockModifier
57 ActiveBlockModifier() = default;
58 virtual ~ActiveBlockModifier() = default;
60 // Set of contents to trigger on
61 virtual const std::vector<std::string> &getTriggerContents() const = 0;
62 // Set of required neighbors (trigger doesn't happen if none are found)
63 // Empty = do not check neighbors
64 virtual const std::vector<std::string> &getRequiredNeighbors() const = 0;
65 // Trigger interval in seconds
66 virtual float getTriggerInterval() = 0;
67 // Random chance of (1 / return value), 0 is disallowed
68 virtual u32 getTriggerChance() = 0;
69 // Whether to modify chance to simulate time lost by an unnattended block
70 virtual bool getSimpleCatchUp() = 0;
71 // get min Y for apply abm
72 virtual s16 getMinY() = 0;
73 // get max Y for apply abm
74 virtual s16 getMaxY() = 0;
75 // This is called usually at interval for 1/chance of the nodes
76 virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n){};
77 virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n,
78 u32 active_object_count, u32 active_object_count_wider){};
83 ActiveBlockModifier *abm;
86 ABMWithState(ActiveBlockModifier *abm_);
89 struct LoadingBlockModifierDef
91 // Set of contents to trigger on
92 std::set<std::string> trigger_contents;
94 bool run_at_every_load = false;
96 virtual ~LoadingBlockModifierDef() = default;
98 virtual void trigger(ServerEnvironment *env, v3s16 p,
99 MapNode n, float dtime_s) {};
102 struct LBMContentMapping
104 typedef std::unordered_map<content_t, std::vector<LoadingBlockModifierDef *>> lbm_map;
107 std::vector<LoadingBlockModifierDef *> lbm_list;
109 // Needs to be separate method (not inside destructor),
110 // because the LBMContentMapping may be copied and destructed
111 // many times during operation in the lbm_lookup_map.
112 void deleteContents();
113 void addLBM(LoadingBlockModifierDef *lbm_def, IGameDef *gamedef);
114 const std::vector<LoadingBlockModifierDef *> *lookup(content_t c) const;
120 LBMManager() = default;
123 // Don't call this after loadIntroductionTimes() ran.
124 void addLBMDef(LoadingBlockModifierDef *lbm_def);
126 void loadIntroductionTimes(const std::string ×,
127 IGameDef *gamedef, u32 now);
129 // Don't call this before loadIntroductionTimes() ran.
130 std::string createIntroductionTimesString();
132 // Don't call this before loadIntroductionTimes() ran.
133 void applyLBMs(ServerEnvironment *env, MapBlock *block,
134 u32 stamp, float dtime_s);
136 // Warning: do not make this std::unordered_map, order is relevant here
137 typedef std::map<u32, LBMContentMapping> lbm_lookup_map;
140 // Once we set this to true, we can only query,
142 bool m_query_mode = false;
144 // For m_query_mode == false:
145 // The key of the map is the LBM def's name.
146 // TODO make this std::unordered_map
147 std::map<std::string, LoadingBlockModifierDef *> m_lbm_defs;
149 // For m_query_mode == true:
150 // The key of the map is the LBM def's first introduction time.
151 lbm_lookup_map m_lbm_lookup;
153 // Returns an iterator to the LBMs that were introduced
154 // after the given time. This is guaranteed to return
155 // valid values for everything
156 lbm_lookup_map::const_iterator getLBMsIntroducedAfter(u32 time)
157 { return m_lbm_lookup.lower_bound(time); }
161 List of active blocks, used by ServerEnvironment
164 class ActiveBlockList
167 void update(std::vector<PlayerSAO*> &active_players,
168 s16 active_block_range,
169 s16 active_object_range,
170 std::set<v3s16> &blocks_removed,
171 std::set<v3s16> &blocks_added);
173 bool contains(v3s16 p) const {
174 return (m_list.find(p) != m_list.end());
178 return m_list.size();
185 void remove(v3s16 p) {
190 std::set<v3s16> m_list;
191 std::set<v3s16> m_abm_list;
192 // list of blocks that are always active, not modified by this class
193 std::set<v3s16> m_forceloaded_list;
197 Operation mode for ServerEnvironment::clearObjects()
199 enum ClearObjectsMode {
200 // Load and go through every mapblock, clearing objects
201 CLEAR_OBJECTS_MODE_FULL,
203 // Clear objects immediately in loaded mapblocks;
204 // clear objects in unloaded mapblocks only when the mapblocks are next activated.
205 CLEAR_OBJECTS_MODE_QUICK,
208 class ServerEnvironment final : public Environment
211 ServerEnvironment(ServerMap *map, ServerScripting *script_iface,
212 Server *server, const std::string &path_world, MetricsBackend *mb);
213 ~ServerEnvironment();
219 ServerMap & getServerMap();
221 //TODO find way to remove this fct!
222 ServerScripting* getScriptIface()
228 float getSendRecommendedInterval()
229 { return m_recommended_send_interval; }
231 void kickAllPlayers(AccessDeniedCode reason,
232 const std::string &str_reason, bool reconnect);
234 void saveLoadedPlayers(bool force = false);
235 void savePlayer(RemotePlayer *player);
236 PlayerSAO *loadPlayer(RemotePlayer *player, bool *new_player, session_t peer_id,
237 bool is_singleplayer);
238 void addPlayer(RemotePlayer *player);
239 void removePlayer(RemotePlayer *player);
240 bool removePlayerFromDatabase(const std::string &name);
243 Save and load time of day and game timer
248 u32 addParticleSpawner(float exptime);
249 u32 addParticleSpawner(float exptime, u16 attached_id);
250 void deleteParticleSpawner(u32 id, bool remove_from_object = true);
253 External ActiveObject interface
254 -------------------------------------------
257 ServerActiveObject* getActiveObject(u16 id)
259 return m_ao_manager.getActiveObject(id);
263 Add an active object to the environment.
264 Environment handles deletion of object.
265 Object may be deleted by environment immediately.
266 If id of object is 0, assigns a free id to it.
267 Returns the id of the object.
268 Returns 0 if not added and thus deleted.
270 u16 addActiveObject(ServerActiveObject *object);
273 Add an active object as a static object to the corresponding
275 Caller allocates memory, ServerEnvironment frees memory.
276 Return value: true if succeeded, false if failed.
277 (note: not used, pending removal from engine)
279 //bool addActiveObjectAsStatic(ServerActiveObject *object);
282 Find out what new objects have been added to
283 inside a radius around a position
285 void getAddedActiveObjects(PlayerSAO *playersao, s16 radius,
287 std::set<u16> ¤t_objects,
288 std::queue<u16> &added_objects);
291 Find out what new objects have been removed from
292 inside a radius around a position
294 void getRemovedActiveObjects(PlayerSAO *playersao, s16 radius,
296 std::set<u16> ¤t_objects,
297 std::queue<u16> &removed_objects);
300 Get the next message emitted by some active object.
301 Returns false if no messages are available, true otherwise.
303 bool getActiveObjectMessage(ActiveObjectMessage *dest);
305 virtual void getSelectedActiveObjects(
306 const core::line3d<f32> &shootline_on_map,
307 std::vector<PointedThing> &objects
311 Activate objects and dynamically modify for the dtime determined
312 from timestamp and additional_dtime
314 void activateBlock(MapBlock *block, u32 additional_dtime=0);
317 {Active,Loading}BlockModifiers
318 -------------------------------------------
321 void addActiveBlockModifier(ActiveBlockModifier *abm);
322 void addLoadingBlockModifierDef(LoadingBlockModifierDef *lbm);
326 -------------------------------------------
329 // Script-aware node setters
330 bool setNode(v3s16 p, const MapNode &n);
331 bool removeNode(v3s16 p);
332 bool swapNode(v3s16 p, const MapNode &n);
334 // Find the daylight value at pos with a Depth First Search
335 u8 findSunlight(v3s16 pos) const;
337 // Find all active objects inside a radius around a point
338 void getObjectsInsideRadius(std::vector<ServerActiveObject *> &objects, const v3f &pos, float radius,
339 std::function<bool(ServerActiveObject *obj)> include_obj_cb)
341 return m_ao_manager.getObjectsInsideRadius(pos, radius, objects, include_obj_cb);
344 // Find all active objects inside a box
345 void getObjectsInArea(std::vector<ServerActiveObject *> &objects, const aabb3f &box,
346 std::function<bool(ServerActiveObject *obj)> include_obj_cb)
348 return m_ao_manager.getObjectsInArea(box, objects, include_obj_cb);
351 // Clear objects, loading and going through every MapBlock
352 void clearObjects(ClearObjectsMode mode);
354 // This makes stuff happen
355 void step(f32 dtime);
357 u32 getGameTime() const { return m_game_time; }
359 void reportMaxLagEstimate(float f) { m_max_lag_estimate = f; }
360 float getMaxLagEstimate() { return m_max_lag_estimate; }
362 std::set<v3s16>* getForceloadedBlocks() { return &m_active_blocks.m_forceloaded_list; }
364 // Sorted by how ready a mapblock is
369 BS_ACTIVE // always highest value
371 BlockStatus getBlockStatus(v3s16 blockpos);
373 // Sets the static object status all the active objects in the specified block
374 // This is only really needed for deleting blocks from the map
375 void setStaticForActiveObjectsInBlock(v3s16 blockpos,
376 bool static_exists, v3s16 static_block=v3s16(0,0,0));
378 RemotePlayer *getPlayer(const session_t peer_id);
379 RemotePlayer *getPlayer(const char* name);
380 const std::vector<RemotePlayer *> getPlayers() const { return m_players; }
381 u32 getPlayerCount() const { return m_players.size(); }
383 static bool migratePlayersDatabase(const GameParams &game_params,
384 const Settings &cmd_args);
386 AuthDatabase *getAuthDatabase() { return m_auth_database; }
387 static bool migrateAuthDatabase(const GameParams &game_params,
388 const Settings &cmd_args);
392 * called if env_meta.txt doesn't exist (e.g. new world)
394 void loadDefaultMeta();
396 static PlayerDatabase *openPlayerDatabase(const std::string &name,
397 const std::string &savedir, const Settings &conf);
398 static AuthDatabase *openAuthDatabase(const std::string &name,
399 const std::string &savedir, const Settings &conf);
401 Internal ActiveObject interface
402 -------------------------------------------
406 Add an active object to the environment.
408 Called by addActiveObject.
410 Object may be deleted by environment immediately.
411 If id of object is 0, assigns a free id to it.
412 Returns the id of the object.
413 Returns 0 if not added and thus deleted.
415 u16 addActiveObjectRaw(ServerActiveObject *object, bool set_changed, u32 dtime_s);
418 Remove all objects that satisfy (isGone() && m_known_by_count==0)
420 void removeRemovedObjects();
423 Convert stored objects from block to active
425 void activateObjects(MapBlock *block, u32 dtime_s);
428 Convert objects that are not in active blocks to static.
430 If m_known_by_count != 0, active object is not deleted, but static
431 data is still updated.
433 If force_delete is set, active object is deleted nevertheless. It
434 shall only be set so in the destructor of the environment.
436 void deactivateFarObjects(bool force_delete);
439 A few helpers used by the three above methods
441 void deleteStaticFromBlock(
442 ServerActiveObject *obj, u16 id, u32 mod_reason, bool no_emerge);
443 bool saveStaticToBlock(v3s16 blockpos, u16 store_id,
444 ServerActiveObject *obj, const StaticObject &s_obj, u32 mod_reason);
453 ServerScripting* m_script;
456 // Active Object Manager
457 server::ActiveObjectMgr m_ao_manager;
459 const std::string m_path_world;
460 // Outgoing network message buffer for active objects
461 std::queue<ActiveObjectMessage> m_active_object_messages;
463 float m_send_recommended_timer = 0.0f;
464 IntervalLimiter m_object_management_interval;
465 // List of active blocks
466 ActiveBlockList m_active_blocks;
467 int m_fast_active_block_divider = 1;
468 IntervalLimiter m_active_blocks_mgmt_interval;
469 IntervalLimiter m_active_block_modifier_interval;
470 IntervalLimiter m_active_blocks_nodemetadata_interval;
471 // Whether the variables below have been read from file yet
472 bool m_meta_loaded = false;
473 // Time from the beginning of the game in seconds.
474 // Incremented in step().
476 // A helper variable for incrementing the latter
477 float m_game_time_fraction_counter = 0.0f;
478 // Time of last clearObjects call (game time).
479 // When a mapblock older than this is loaded, its objects are cleared.
480 u32 m_last_clear_objects_time = 0;
481 // Active block modifiers
482 std::vector<ABMWithState> m_abms;
483 LBMManager m_lbm_mgr;
484 // An interval for generally sending object positions and stuff
485 float m_recommended_send_interval = 0.1f;
486 // Estimate for general maximum lag as determined by server.
487 // Can raise to high values like 15s with eg. map generation mods.
488 float m_max_lag_estimate = 0.1f;
490 // peer_ids in here should be unique, except that there may be many 0s
491 std::vector<RemotePlayer*> m_players;
493 PlayerDatabase *m_player_database = nullptr;
494 AuthDatabase *m_auth_database = nullptr;
496 // Pseudo random generator for shuffling, etc.
500 IntervalLimiter m_particle_management_interval;
501 std::unordered_map<u32, float> m_particle_spawners;
502 std::unordered_map<u32, u16> m_particle_spawner_attachments;
504 // Environment metrics
505 MetricCounterPtr m_step_time_counter;
506 MetricGaugePtr m_active_block_gauge;
507 MetricGaugePtr m_active_object_gauge;
509 ServerActiveObject* createSAO(ActiveObjectType type, v3f pos, const std::string &data);