+ // Time of day in 0...1
+ float m_time_of_day_f;
+ // Stores the skew created by the float -> u32 conversion
+ // to be applied at next conversion, so that there is no real skew.
+ float m_time_conversion_skew;
+ // Overriding the day-night ratio is useful for custom sky visuals
+ bool m_enable_day_night_ratio_override;
+ u32 m_day_night_ratio_override;
+ // Days from the server start, accounts for time shift
+ // in game (e.g. /time or bed usage)
+ Atomic<u32> m_day_count;
+ /*
+ * Above: values managed by m_time_lock
+ */
+
+ /* TODO: Add a callback function so these can be updated when a setting
+ * changes. At this point in time it doesn't matter (e.g. /set
+ * is documented to change server settings only)
+ *
+ * TODO: Local caching of settings is not optimal and should at some stage
+ * be updated to use a global settings object for getting thse values
+ * (as opposed to the this local caching). This can be addressed in
+ * a later release.
+ */
+ bool m_cache_enable_shaders;
+ float m_cache_active_block_mgmt_interval;
+ float m_cache_abm_interval;
+ float m_cache_nodetimer_interval;
+
+private:
+ Mutex m_time_lock;
+
+ DISABLE_CLASS_COPY(Environment);
+};
+
+/*
+ {Active, Loading} block modifier interface.
+
+ These are fed into ServerEnvironment at initialization time;
+ ServerEnvironment handles deleting them.
+*/
+
+class ActiveBlockModifier
+{
+public:
+ ActiveBlockModifier(){};
+ virtual ~ActiveBlockModifier(){};
+
+ // Set of contents to trigger on
+ virtual std::set<std::string> getTriggerContents()=0;
+ // Set of required neighbors (trigger doesn't happen if none are found)
+ // Empty = do not check neighbors
+ virtual std::set<std::string> getRequiredNeighbors()
+ { return std::set<std::string>(); }
+ // Trigger interval in seconds
+ virtual float getTriggerInterval() = 0;
+ // Random chance of (1 / return value), 0 is disallowed
+ virtual u32 getTriggerChance() = 0;
+ // Whether to modify chance to simulate time lost by an unnattended block
+ virtual bool getSimpleCatchUp() = 0;
+ // This is called usually at interval for 1/chance of the nodes
+ virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n){};
+ virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n,
+ u32 active_object_count, u32 active_object_count_wider){};
+};
+
+struct ABMWithState
+{
+ ActiveBlockModifier *abm;
+ float timer;
+
+ ABMWithState(ActiveBlockModifier *abm_);
+};
+
+struct LoadingBlockModifierDef
+{
+ // Set of contents to trigger on
+ std::set<std::string> trigger_contents;
+ std::string name;
+ bool run_at_every_load;
+
+ virtual ~LoadingBlockModifierDef() {}
+ virtual void trigger(ServerEnvironment *env, v3s16 p, MapNode n){};
+};
+
+struct LBMContentMapping
+{
+ typedef std::map<content_t, std::vector<LoadingBlockModifierDef *> > container_map;
+ container_map map;
+
+ std::vector<LoadingBlockModifierDef *> lbm_list;
+
+ // Needs to be separate method (not inside destructor),
+ // because the LBMContentMapping may be copied and destructed
+ // many times during operation in the lbm_lookup_map.
+ void deleteContents();
+ void addLBM(LoadingBlockModifierDef *lbm_def, IGameDef *gamedef);
+ const std::vector<LoadingBlockModifierDef *> *lookup(content_t c) const;
+};
+
+class LBMManager
+{
+public:
+ LBMManager():
+ m_query_mode(false)
+ {}
+
+ ~LBMManager();
+
+ // Don't call this after loadIntroductionTimes() ran.
+ void addLBMDef(LoadingBlockModifierDef *lbm_def);
+
+ void loadIntroductionTimes(const std::string ×,
+ IGameDef *gamedef, u32 now);
+
+ // Don't call this before loadIntroductionTimes() ran.
+ std::string createIntroductionTimesString();
+
+ // Don't call this before loadIntroductionTimes() ran.
+ void applyLBMs(ServerEnvironment *env, MapBlock *block, u32 stamp);
+
+ // Warning: do not make this std::unordered_map, order is relevant here
+ typedef std::map<u32, LBMContentMapping> lbm_lookup_map;
+
+private:
+ // Once we set this to true, we can only query,
+ // not modify
+ bool m_query_mode;
+
+ // For m_query_mode == false:
+ // The key of the map is the LBM def's name.
+ // TODO make this std::unordered_map
+ std::map<std::string, LoadingBlockModifierDef *> m_lbm_defs;
+
+ // For m_query_mode == true:
+ // The key of the map is the LBM def's first introduction time.
+ lbm_lookup_map m_lbm_lookup;
+
+ // Returns an iterator to the LBMs that were introduced
+ // after the given time. This is guaranteed to return
+ // valid values for everything
+ lbm_lookup_map::const_iterator getLBMsIntroducedAfter(u32 time)
+ { return m_lbm_lookup.lower_bound(time); }