+
+void ScriptApiEnv::on_mapblocks_changed(const std::unordered_set<v3s16> &set)
+{
+ SCRIPTAPI_PRECHECKHEADER
+
+ // Get core.registered_on_mapblocks_changed
+ lua_getglobal(L, "core");
+ lua_getfield(L, -1, "registered_on_mapblocks_changed");
+ luaL_checktype(L, -1, LUA_TTABLE);
+ lua_remove(L, -2);
+
+ // Convert the set to a set of position hashes
+ lua_createtable(L, 0, set.size());
+ for(const v3s16 &p : set) {
+ lua_pushnumber(L, hash_node_position(p));
+ lua_pushboolean(L, true);
+ lua_rawset(L, -3);
+ }
+ lua_pushinteger(L, set.size());
+
+ runCallbacks(2, RUN_CALLBACKS_MODE_FIRST);
+}
+
+bool ScriptApiEnv::has_on_mapblocks_changed()
+{
+ SCRIPTAPI_PRECHECKHEADER
+
+ // Get core.registered_on_mapblocks_changed
+ lua_getglobal(L, "core");
+ lua_getfield(L, -1, "registered_on_mapblocks_changed");
+ luaL_checktype(L, -1, LUA_TTABLE);
+ return lua_objlen(L, -1) > 0;
+}