+/*
+ Active block modifier interface.
+
+ These are fed into ServerEnvironment at initialization time;
+ ServerEnvironment handles deleting them.
+*/
+
+class ActiveBlockModifier
+{
+public:
+ ActiveBlockModifier(){};
+ virtual ~ActiveBlockModifier(){};
+
+ virtual std::set<std::string> getTriggerContents()=0;
+ virtual float getTriggerInterval() = 0;
+ // chance of (1 / return value), 0 is disallowed
+ virtual u32 getTriggerChance() = 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_):
+ abm(abm_)
+ {}
+};
+