-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 Cave {
- s16 min_tunnel_diameter;
- s16 max_tunnel_diameter;
- int dswitchint;
- u16 tunnel_routepoints;
- int part_max_length_rs;
- bool large_cave_is_flat;
- bool flooded;
-};
-
-struct MapgenV6Params : public MapgenParams {