-extern NoiseParams nparams_v6_def_terrain_base;
-extern NoiseParams nparams_v6_def_terrain_higher;
-extern NoiseParams nparams_v6_def_steepness;
-extern NoiseParams nparams_v6_def_height_select;
-extern NoiseParams nparams_v6_def_mud;
-extern NoiseParams nparams_v6_def_beach;
-extern NoiseParams nparams_v6_def_biome;
-extern NoiseParams nparams_v6_def_cave;
-extern NoiseParams nparams_v6_def_humidity;
-extern NoiseParams nparams_v6_def_trees;
-extern NoiseParams nparams_v6_def_apple_trees;
-
-struct MapgenV6Params : public MapgenParams {