mods/default/mapgen.lua

   1 --
   2 -- Aliases for map generator outputs
   3 --
   4
   5 minetest.register_alias("mapgen_stone", "default:stone")
   6 minetest.register_alias("mapgen_dirt", "default:dirt")
   7 minetest.register_alias("mapgen_dirt_with_grass", "default:dirt_with_grass")
   8 minetest.register_alias("mapgen_sand", "default:sand")
   9 minetest.register_alias("mapgen_water_source", "default:water_source")
  10 minetest.register_alias("mapgen_river_water_source", "default:river_water_source")
  11 minetest.register_alias("mapgen_lava_source", "default:lava_source")
  12 minetest.register_alias("mapgen_gravel", "default:gravel")
  13 minetest.register_alias("mapgen_desert_stone", "default:desert_stone")
  14 minetest.register_alias("mapgen_desert_sand", "default:desert_sand")
  15 minetest.register_alias("mapgen_dirt_with_snow", "default:dirt_with_snow")
  16 minetest.register_alias("mapgen_snowblock", "default:snowblock")
  17 minetest.register_alias("mapgen_snow", "default:snow")
  18 minetest.register_alias("mapgen_ice", "default:ice")
  19 minetest.register_alias("mapgen_sandstone", "default:sandstone")
  20
  21 -- Flora
  22
  23 minetest.register_alias("mapgen_tree", "default:tree")
  24 minetest.register_alias("mapgen_leaves", "default:leaves")
  25 minetest.register_alias("mapgen_apple", "default:apple")
  26 minetest.register_alias("mapgen_jungletree", "default:jungletree")
  27 minetest.register_alias("mapgen_jungleleaves", "default:jungleleaves")
  28 minetest.register_alias("mapgen_junglegrass", "default:junglegrass")
  29 minetest.register_alias("mapgen_pine_tree", "default:pine_tree")
  30 minetest.register_alias("mapgen_pine_needles", "default:pine_needles")
  31
  32 -- Dungeons
  33
  34 minetest.register_alias("mapgen_cobble", "default:cobble")
  35 minetest.register_alias("mapgen_stair_cobble", "stairs:stair_cobble")
  36 minetest.register_alias("mapgen_mossycobble", "default:mossycobble")
  37 minetest.register_alias("mapgen_sandstonebrick", "default:sandstonebrick")
  38 minetest.register_alias("mapgen_stair_sandstonebrick", "stairs:stair_sandstonebrick")
  39
  40
  41 --
  42 -- Register ores
  43 --
  44
  45 -- All mapgens except singlenode
  46 -- Blob ore first to avoid other ores inside blobs
  47
  48 function default.register_ores()
  49
  50         -- Clay
  51
  52         minetest.register_ore({
  53                 ore_type         = "blob",
  54                 ore              = "default:clay",
  55                 wherein          = {"default:sand"},
  56                 clust_scarcity   = 24 * 24 * 24,
  57                 clust_size       = 7,
  58                 y_min            = -15,
  59                 y_max            = 0,
  60                 noise_threshhold = 0,
  61                 noise_params     = {
  62                         offset = 0.35,
  63                         scale = 0.2,
  64                         spread = {x = 5, y = 5, z = 5},
  65                         seed = -316,
  66                         octaves = 1,
  67                         persist = 0.5
  68                 },
  69         })
  70
  71         -- Sand
  72
  73         minetest.register_ore({
  74                 ore_type         = "blob",
  75                 ore              = "default:sand",
  76                 wherein          = {"default:stone"},
  77                 clust_scarcity   = 24 * 24 * 24,
  78                 clust_size       = 7,
  79                 y_min            = -63,
  80                 y_max            = 4,
  81                 noise_threshhold = 0,
  82                 noise_params     = {
  83                         offset = 0.35,
  84                         scale = 0.2,
  85                         spread = {x = 5, y = 5, z = 5},
  86                         seed = 2316,
  87                         octaves = 1,
  88                         persist = 0.5
  89                 },
  90         })
  91
  92         -- Dirt
  93
  94         minetest.register_ore({
  95                 ore_type         = "blob",
  96                 ore              = "default:dirt",
  97                 wherein          = {"default:stone"},
  98                 clust_scarcity   = 24 * 24 * 24,
  99                 clust_size       = 7,
 100                 y_min            = -63,
 101                 y_max            = 31000,
 102                 noise_threshhold = 0,
 103                 noise_params     = {
 104                         offset = 0.35,
 105                         scale = 0.2,
 106                         spread = {x = 5, y = 5, z = 5},
 107                         seed = 17676,
 108                         octaves = 1,
 109                         persist = 0.5
 110                 },
 111         })
 112
 113         -- Gravel
 114
 115         minetest.register_ore({
 116                 ore_type         = "blob",
 117                 ore              = "default:gravel",
 118                 wherein          = {"default:stone"},
 119                 clust_scarcity   = 24 * 24 * 24,
 120                 clust_size       = 7,
 121                 y_min            = -31000,
 122                 y_max            = 31000,
 123                 noise_threshhold = 0,
 124                 noise_params     = {
 125                         offset = 0.35,
 126                         scale = 0.2,
 127                         spread = {x = 5, y = 5, z = 5},
 128                         seed = 766,
 129                         octaves = 1,
 130                         persist = 0.5
 131                 },
 132         })
 133
 134         -- Coal
 135
 136         minetest.register_ore({
 137                 ore_type       = "scatter",
 138                 ore            = "default:stone_with_coal",
 139                 wherein        = "default:stone",
 140                 clust_scarcity = 8 * 8 * 8,
 141                 clust_num_ores = 8,
 142                 clust_size     = 3,
 143                 y_min          = -31000,
 144                 y_max          = 64,
 145         })
 146
 147         minetest.register_ore({
 148                 ore_type       = "scatter",
 149                 ore            = "default:stone_with_coal",
 150                 wherein        = "default:stone",
 151                 clust_scarcity = 24 * 24 * 24,
 152                 clust_num_ores = 27,
 153                 clust_size     = 6,
 154                 y_min          = -31000,
 155                 y_max          = 0,
 156         })
 157
 158         -- Iron
 159
 160         minetest.register_ore({
 161                 ore_type       = "scatter",
 162                 ore            = "default:stone_with_iron",
 163                 wherein        = "default:stone",
 164                 clust_scarcity = 12 * 12 * 12,
 165                 clust_num_ores = 3,
 166                 clust_size     = 2,
 167                 y_min          = -15,
 168                 y_max          = 2,
 169         })
 170
 171         minetest.register_ore({
 172                 ore_type       = "scatter",
 173                 ore            = "default:stone_with_iron",
 174                 wherein        = "default:stone",
 175                 clust_scarcity = 9 * 9 * 9,
 176                 clust_num_ores = 5,
 177                 clust_size     = 3,
 178                 y_min          = -63,
 179                 y_max          = -16,
 180         })
 181
 182         minetest.register_ore({
 183                 ore_type       = "scatter",
 184                 ore            = "default:stone_with_iron",
 185                 wherein        = "default:stone",
 186                 clust_scarcity = 7 * 7 * 7,
 187                 clust_num_ores = 5,
 188                 clust_size     = 3,
 189                 y_min          = -31000,
 190                 y_max          = -64,
 191         })
 192
 193         minetest.register_ore({
 194                 ore_type       = "scatter",
 195                 ore            = "default:stone_with_iron",
 196                 wherein        = "default:stone",
 197                 clust_scarcity = 24 * 24 * 24,
 198                 clust_num_ores = 27,
 199                 clust_size     = 6,
 200                 y_min          = -31000,
 201                 y_max          = -64,
 202         })
 203
 204         --Mese
 205
 206         minetest.register_ore({
 207                 ore_type       = "scatter",
 208                 ore            = "default:stone_with_mese",
 209                 wherein        = "default:stone",
 210                 clust_scarcity = 18 * 18 * 18,
 211                 clust_num_ores = 3,
 212                 clust_size     = 2,
 213                 y_min          = -255,
 214                 y_max          = -64,
 215         })
 216
 217         minetest.register_ore({
 218                 ore_type       = "scatter",
 219                 ore            = "default:stone_with_mese",
 220                 wherein        = "default:stone",
 221                 clust_scarcity = 14 * 14 * 14,
 222                 clust_num_ores = 5,
 223                 clust_size     = 3,
 224                 y_min          = -31000,
 225                 y_max          = -256,
 226         })
 227
 228         minetest.register_ore({
 229                 ore_type       = "scatter",
 230                 ore            = "default:mese",
 231                 wherein        = "default:stone",
 232                 clust_scarcity = 36 * 36 * 36,
 233                 clust_num_ores = 3,
 234                 clust_size     = 2,
 235                 y_min          = -31000,
 236                 y_max          = -1024,
 237         })
 238
 239         -- Gold
 240
 241         minetest.register_ore({
 242                 ore_type       = "scatter",
 243                 ore            = "default:stone_with_gold",
 244                 wherein        = "default:stone",
 245                 clust_scarcity = 15 * 15 * 15,
 246                 clust_num_ores = 3,
 247                 clust_size     = 2,
 248                 y_min          = -255,
 249                 y_max          = -64,
 250         })
 251
 252         minetest.register_ore({
 253                 ore_type       = "scatter",
 254                 ore            = "default:stone_with_gold",
 255                 wherein        = "default:stone",
 256                 clust_scarcity = 13 * 13 * 13,
 257                 clust_num_ores = 5,
 258                 clust_size     = 3,
 259                 y_min          = -31000,
 260                 y_max          = -256,
 261         })
 262
 263         -- Diamond
 264
 265         minetest.register_ore({
 266                 ore_type       = "scatter",
 267                 ore            = "default:stone_with_diamond",
 268                 wherein        = "default:stone",
 269                 clust_scarcity = 17 * 17 * 17,
 270                 clust_num_ores = 4,
 271                 clust_size     = 3,
 272                 y_min          = -255,
 273                 y_max          = -128,
 274         })
 275
 276         minetest.register_ore({
 277                 ore_type       = "scatter",
 278                 ore            = "default:stone_with_diamond",
 279                 wherein        = "default:stone",
 280                 clust_scarcity = 15 * 15 * 15,
 281                 clust_num_ores = 4,
 282                 clust_size     = 3,
 283                 y_min          = -31000,
 284                 y_max          = -256,
 285         })
 286
 287         -- Copper
 288
 289         minetest.register_ore({
 290                 ore_type       = "scatter",
 291                 ore            = "default:stone_with_copper",
 292                 wherein        = "default:stone",
 293                 clust_scarcity = 12 * 12 * 12,
 294                 clust_num_ores = 4,
 295                 clust_size     = 3,
 296                 y_min          = -63,
 297                 y_max          = -16,
 298         })
 299
 300         minetest.register_ore({
 301                 ore_type       = "scatter",
 302                 ore            = "default:stone_with_copper",
 303                 wherein        = "default:stone",
 304                 clust_scarcity = 9 * 9 * 9,
 305                 clust_num_ores = 5,
 306                 clust_size     = 3,
 307                 y_min          = -31000,
 308                 y_max          = -64,
 309         })
 310 end
 311
 312
 313 --
 314 -- Register biomes
 315 --
 316
 317 -- All mapgens except mgv6 and singlenode
 318
 319 function default.register_biomes()
 320         minetest.clear_registered_biomes()
 321
 322         -- Permanent ice
 323
 324         minetest.register_biome({
 325                 name = "glacier",
 326                 node_dust = "default:snowblock",
 327                 node_top = "default:snowblock",
 328                 depth_top = 1,
 329                 node_filler = "default:snowblock",
 330                 depth_filler = 3,
 331                 node_stone = "default:ice",
 332                 node_water_top = "default:ice",
 333                 depth_water_top = 10,
 334                 --node_water = "",
 335                 y_min = -8,
 336                 y_max = 31000,
 337                 heat_point = -5,
 338                 humidity_point = 50,
 339         })
 340
 341         minetest.register_biome({
 342                 name = "glacier_ocean",
 343                 node_dust = "default:snowblock",
 344                 node_top = "default:gravel",
 345                 depth_top = 1,
 346                 node_filler = "default:gravel",
 347                 depth_filler = 2,
 348                 --node_stone = "",
 349                 --node_water_top = "",
 350                 --depth_water_top = ,
 351                 --node_water = "",
 352                 y_min = -112,
 353                 y_max = -9,
 354                 heat_point = -5,
 355                 humidity_point = 50,
 356         })
 357
 358         -- Cold
 359
 360         minetest.register_biome({
 361                 name = "tundra",
 362                 node_dust = "default:snow",
 363                 node_top = "default:dirt_with_snow",
 364                 depth_top = 1,
 365                 node_filler = "default:dirt",
 366                 depth_filler = 0,
 367                 --node_stone = "",
 368                 --node_water_top = "",
 369                 --depth_water_top = ,
 370                 --node_water = "",
 371                 y_min = 2,
 372                 y_max = 31000,
 373                 heat_point = 20,
 374                 humidity_point = 30,
 375         })
 376
 377         minetest.register_biome({
 378                 name = "tundra_ocean",
 379                 --node_dust = "",
 380                 node_top = "default:sand",
 381                 depth_top = 1,
 382                 node_filler = "default:sand",
 383                 depth_filler = 2,
 384                 --node_stone = "",
 385                 --node_water_top = "",
 386                 --depth_water_top = ,
 387                 --node_water = "",
 388                 y_min = -112,
 389                 y_max = 1,
 390                 heat_point = 20,
 391                 humidity_point = 30,
 392         })
 393
 394         minetest.register_biome({
 395                 name = "taiga",
 396                 node_dust = "default:snow",
 397                 node_top = "default:snowblock",
 398                 depth_top = 1,
 399                 node_filler = "default:dirt",
 400                 depth_filler = 2,
 401                 --node_stone = "",
 402                 --node_water_top = "",
 403                 --depth_water_top = ,
 404                 --node_water = "",
 405                 y_min = 2,
 406                 y_max = 31000,
 407                 heat_point = 20,
 408                 humidity_point = 70,
 409         })
 410
 411         minetest.register_biome({
 412                 name = "taiga_ocean",
 413                 --node_dust = "",
 414                 node_top = "default:sand",
 415                 depth_top = 1,
 416                 node_filler = "default:sand",
 417                 depth_filler = 2,
 418                 --node_stone = "",
 419                 --node_water_top = "",
 420                 --depth_water_top = ,
 421                 --node_water = "",
 422                 y_min = -112,
 423                 y_max = 1,
 424                 heat_point = 20,
 425                 humidity_point = 70,
 426         })
 427
 428         -- Cool
 429
 430         minetest.register_biome({
 431                 name = "stone_grassland",
 432                 --node_dust = "",
 433                 node_top = "default:dirt_with_grass",
 434                 depth_top = 1,
 435                 node_filler = "default:dirt",
 436                 depth_filler = 0,
 437                 --node_stone = "",
 438                 --node_water_top = "",
 439                 --depth_water_top = ,
 440                 --node_water = "",
 441                 y_min = 6,
 442                 y_max = 31000,
 443                 heat_point = 45,
 444                 humidity_point = 30,
 445         })
 446
 447         minetest.register_biome({
 448                 name = "stone_grassland_ocean",
 449                 --node_dust = "",
 450                 node_top = "default:sand",
 451                 depth_top = 1,
 452                 node_filler = "default:sand",
 453                 depth_filler = 2,
 454                 --node_stone = "",
 455                 --node_water_top = "",
 456                 --depth_water_top = ,
 457                 --node_water = "",
 458                 y_min = -112,
 459                 y_max = 5,
 460                 heat_point = 45,
 461                 humidity_point = 30,
 462         })
 463
 464         minetest.register_biome({
 465                 name = "coniferous_forest",
 466                 --node_dust = "",
 467                 node_top = "default:dirt_with_grass",
 468                 depth_top = 1,
 469                 node_filler = "default:dirt",
 470                 depth_filler = 2,
 471                 --node_stone = "",
 472                 --node_water_top = "",
 473                 --depth_water_top = ,
 474                 --node_water = "",
 475                 y_min = 6,
 476                 y_max = 31000,
 477                 heat_point = 45,
 478                 humidity_point = 70,
 479         })
 480
 481         minetest.register_biome({
 482                 name = "coniferous_forest_ocean",
 483                 --node_dust = "",
 484                 node_top = "default:sand",
 485                 depth_top = 1,
 486                 node_filler = "default:sand",
 487                 depth_filler = 2,
 488                 --node_stone = "",
 489                 --node_water_top = "",
 490                 --depth_water_top = ,
 491                 --node_water = "",
 492                 y_min = -112,
 493                 y_max = 5,
 494                 heat_point = 45,
 495                 humidity_point = 70,
 496         })
 497
 498         -- Warm
 499
 500         minetest.register_biome({
 501                 name = "sandstone_grassland",
 502                 --node_dust = "",
 503                 node_top = "default:dirt_with_grass",
 504                 depth_top = 1,
 505                 node_filler = "default:dirt",
 506                 depth_filler = 0,
 507                 node_stone = "default:sandstone",
 508                 --node_water_top = "",
 509                 --depth_water_top = ,
 510                 --node_water = "",
 511                 y_min = 6,
 512                 y_max = 31000,
 513                 heat_point = 70,
 514                 humidity_point = 30,
 515         })
 516
 517         minetest.register_biome({
 518                 name = "sandstone_grassland_ocean",
 519                 --node_dust = "",
 520                 node_top = "default:sand",
 521                 depth_top = 1,
 522                 node_filler = "default:sand",
 523                 depth_filler = 2,
 524                 node_stone = "default:sandstone",
 525                 --node_water_top = "",
 526                 --depth_water_top = ,
 527                 --node_water = "",
 528                 y_min = -112,
 529                 y_max = 5,
 530                 heat_point = 70,
 531                 humidity_point = 30,
 532         })
 533
 534         minetest.register_biome({
 535                 name = "deciduous_forest",
 536                 --node_dust = "",
 537                 node_top = "default:dirt_with_grass",
 538                 depth_top = 1,
 539                 node_filler = "default:dirt",
 540                 depth_filler = 2,
 541                 --node_stone = "",
 542                 --node_water_top = "",
 543                 --depth_water_top = ,
 544                 --node_water = "",
 545                 y_min = 6,
 546                 y_max = 31000,
 547                 heat_point = 70,
 548                 humidity_point = 70,
 549         })
 550
 551         minetest.register_biome({
 552                 name = "deciduous_forest_ocean",
 553                 --node_dust = "",
 554                 node_top = "default:sand",
 555                 depth_top = 1,
 556                 node_filler = "default:sand",
 557                 depth_filler = 2,
 558                 --node_stone = "",
 559                 --node_water_top = "",
 560                 --depth_water_top = ,
 561                 --node_water = "",
 562                 y_min = -112,
 563                 y_max = 5,
 564                 heat_point = 70,
 565                 humidity_point = 70,
 566         })
 567
 568         -- Hot
 569
 570         minetest.register_biome({
 571                 name = "desert",
 572                 --node_dust = "",
 573                 node_top = "default:desert_sand",
 574                 depth_top = 1,
 575                 node_filler = "default:desert_sand",
 576                 depth_filler = 1,
 577                 node_stone = "default:desert_stone",
 578                 --node_water_top = "",
 579                 --depth_water_top = ,
 580                 --node_water = "",
 581                 y_min = 1,
 582                 y_max = 31000,
 583                 heat_point = 95,
 584                 humidity_point = 10,
 585         })
 586
 587         minetest.register_biome({
 588                 name = "desert_ocean",
 589                 --node_dust = "",
 590                 node_top = "default:sand",
 591                 depth_top = 1,
 592                 node_filler = "default:sand",
 593                 depth_filler = 2,
 594                 node_stone = "default:desert_stone",
 595                 --node_water_top = "",
 596                 --depth_water_top = ,
 597                 --node_water = "",
 598                 y_min = -112,
 599                 y_max = 0,
 600                 heat_point = 95,
 601                 humidity_point = 10,
 602         })
 603
 604         minetest.register_biome({
 605                 name = "savanna",
 606                 --node_dust = "",
 607                 node_top = "default:dirt_with_dry_grass",
 608                 depth_top = 1,
 609                 node_filler = "default:dirt",
 610                 depth_filler = 1,
 611                 --node_stone = "",
 612                 --node_water_top = "",
 613                 --depth_water_top = ,
 614                 --node_water = "",
 615                 y_min = 5,
 616                 y_max = 31000,
 617                 heat_point = 95,
 618                 humidity_point = 50,
 619         })
 620
 621         minetest.register_biome({
 622                 name = "savanna_ocean",
 623                 --node_dust = "",
 624                 node_top = "default:sand",
 625                 depth_top = 1,
 626                 node_filler = "default:sand",
 627                 depth_filler = 2,
 628                 --node_stone = "",
 629                 --node_water_top = "",
 630                 --depth_water_top = ,
 631                 --node_water = "",
 632                 y_min = -112,
 633                 y_max = 4,
 634                 heat_point = 95,
 635                 humidity_point = 50,
 636         })
 637
 638         minetest.register_biome({
 639                 name = "rainforest",
 640                 --node_dust = "",
 641                 node_top = "default:dirt_with_grass",
 642                 depth_top = 1,
 643                 node_filler = "default:dirt",
 644                 depth_filler = 2,
 645                 --node_stone = "",
 646                 --node_water_top = "",
 647                 --depth_water_top = ,
 648                 --node_water = "",
 649                 y_min = 1,
 650                 y_max = 31000,
 651                 heat_point = 95,
 652                 humidity_point = 90,
 653         })
 654
 655         minetest.register_biome({
 656                 name = "rainforest_swamp",
 657                 --node_dust = "",
 658                 node_top = "default:dirt",
 659                 depth_top = 1,
 660                 node_filler = "default:dirt",
 661                 depth_filler = 2,
 662                 --node_stone = "",
 663                 --node_water_top = "",
 664                 --depth_water_top = ,
 665                 --node_water = "",
 666                 y_min = 0,
 667                 y_max = 0,
 668                 heat_point = 95,
 669                 humidity_point = 90,
 670         })
 671
 672         minetest.register_biome({
 673                 name = "rainforest_ocean",
 674                 --node_dust = "",
 675                 node_top = "default:sand",
 676                 depth_top = 1,
 677                 node_filler = "default:sand",
 678                 depth_filler = 2,
 679                 --node_stone = "",
 680                 --node_water_top = "",
 681                 --depth_water_top = ,
 682                 --node_water = "",
 683                 y_min = -112,
 684                 y_max = -1,
 685                 heat_point = 95,
 686                 humidity_point = 90,
 687         })
 688
 689         -- Underground
 690
 691         minetest.register_biome({
 692                 name = "underground",
 693                 --node_dust = "",
 694                 --node_top = "",
 695                 depth_top = 0,
 696                 --node_filler = "",
 697                 depth_filler = -4,
 698                 --node_stone = "",
 699                 --node_water_top = "",
 700                 --depth_water_top = ,
 701                 --node_water = "",
 702                 y_min = -31000,
 703                 y_max = -113,
 704                 heat_point = 50,
 705                 humidity_point = 50,
 706         })
 707 end
 708
 709
 710 --
 711 -- Register decorations
 712 --
 713
 714 -- Mgv6
 715
 716 function default.register_mgv6_decorations()
 717         minetest.clear_registered_decorations()
 718
 719         -- Papyrus
 720
 721         minetest.register_decoration({
 722                 deco_type = "simple",
 723                 place_on = {"default:dirt_with_grass"},
 724                 sidelen = 8,
 725                 noise_params = {
 726                         offset = -0.3,
 727                         scale = 0.7,
 728                         spread = {x = 100, y = 100, z = 100},
 729                         seed = 354,
 730                         octaves = 3,
 731                         persist = 0.7
 732                 },
 733                 y_min = 1,
 734                 y_max = 1,
 735                 decoration = "default:papyrus",
 736                 height = 2,
 737                 height_max = 4,
 738                 spawn_by = "default:water_source",
 739                 num_spawn_by = 1,
 740         })
 741
 742         -- Cacti
 743
 744         minetest.register_decoration({
 745                 deco_type = "simple",
 746                 place_on = {"default:desert_sand"},
 747                 sidelen = 16,
 748                 noise_params = {
 749                         offset = -0.012,
 750                         scale = 0.024,
 751                         spread = {x = 100, y = 100, z = 100},
 752                         seed = 230,
 753                         octaves = 3,
 754                         persist = 0.6
 755                 },
 756                 y_min = 1,
 757                 y_max = 30,
 758                 decoration = "default:cactus",
 759                 height = 3,
 760                 height_max = 4,
 761         })
 762
 763         -- Long grasses
 764
 765         for length = 1, 5 do
 766                 minetest.register_decoration({
 767                         deco_type = "simple",
 768                         place_on = {"default:dirt_with_grass"},
 769                         sidelen = 16,
 770                         noise_params = {
 771                                 offset = 0,
 772                                 scale = 0.007,
 773                                 spread = {x = 100, y = 100, z = 100},
 774                                 seed = 329,
 775                                 octaves = 3,
 776                                 persist = 0.6
 777                         },
 778                         y_min = 1,
 779                         y_max = 30,
 780                         decoration = "default:grass_"..length,
 781                 })
 782         end
 783
 784         -- Dry shrubs
 785
 786         minetest.register_decoration({
 787                 deco_type = "simple",
 788                 place_on = {"default:desert_sand", "default:dirt_with_snow"},
 789                 sidelen = 16,
 790                 noise_params = {
 791                         offset = 0,
 792                         scale = 0.035,
 793                         spread = {x = 100, y = 100, z = 100},
 794                         seed = 329,
 795                         octaves = 3,
 796                         persist = 0.6
 797                 },
 798                 y_min = 1,
 799                 y_max = 30,
 800                 decoration = "default:dry_shrub",
 801         })
 802 end
 803
 804 -- All mapgens except mgv6 and singlenode
 805
 806 local function register_grass_decoration(offset, scale, length)
 807         minetest.register_decoration({
 808                 deco_type = "simple",
 809                 place_on = {"default:dirt_with_grass", "default:sand"},
 810                 sidelen = 16,
 811                 noise_params = {
 812                         offset = offset,
 813                         scale = scale,
 814                         spread = {x=200, y=200, z=200},
 815                         seed = 329,
 816                         octaves = 3,
 817                         persist = 0.6
 818                 },
 819                 biomes = {
 820                         "stone_grassland", "stone_grassland_ocean",
 821                         "sandstone_grassland", "sandstone_grassland_ocean",
 822                         "deciduous_forest", "deciduous_forest_ocean",
 823                         "coniferous_forest", "coniferous_forest_ocean",
 824                 },
 825                 y_min = 5,
 826                 y_max = 31000,
 827                 decoration = "default:grass_"..length,
 828         })
 829 end
 830
 831 local function register_dry_grass_decoration(offset, scale, length)
 832         minetest.register_decoration({
 833                 deco_type = "simple",
 834                 place_on = {"default:dirt_with_dry_grass"},
 835                 sidelen = 16,
 836                 noise_params = {
 837                         offset = offset,
 838                         scale = scale,
 839                         spread = {x=200, y=200, z=200},
 840                         seed = 329,
 841                         octaves = 3,
 842                         persist = 0.6
 843                 },
 844                 biomes = {"savanna"},
 845                 y_min = 5,
 846                 y_max = 31000,
 847                 decoration = "default:dry_grass_"..length,
 848         })
 849 end
 850
 851 function default.register_decorations()
 852         minetest.clear_registered_decorations()
 853
 854         -- Apple tree
 855
 856         minetest.register_decoration({
 857                 deco_type = "schematic",
 858                 place_on = {"default:dirt_with_grass"},
 859                 sidelen = 16,
 860                 noise_params = {
 861                         offset = 0.04,
 862                         scale = 0.02,
 863                         spread = {x=250, y=250, z=250},
 864                         seed = 2,
 865                         octaves = 3,
 866                         persist = 0.66
 867                 },
 868                 biomes = {"deciduous_forest"},
 869                 y_min = 6,
 870                 y_max = 31000,
 871                 schematic = minetest.get_modpath("default").."/schematics/apple_tree.mts",
 872                 flags = "place_center_x, place_center_z",
 873         })
 874
 875         -- Jungle tree
 876
 877         minetest.register_decoration({
 878                 deco_type = "schematic",
 879                 place_on = {"default:dirt_with_grass", "default:dirt"},
 880                 sidelen = 80,
 881                 fill_ratio = 0.09,
 882                 biomes = {"rainforest", "rainforest_swamp"},
 883                 y_min = 0,
 884                 y_max = 31000,
 885                 schematic = minetest.get_modpath("default").."/schematics/jungle_tree.mts",
 886                 flags = "place_center_x, place_center_z",
 887         })
 888
 889         -- Taiga and temperate forest pine tree
 890
 891         minetest.register_decoration({
 892                 deco_type = "schematic",
 893                 place_on = {"default:snowblock", "default:dirt_with_grass"},
 894                 sidelen = 16,
 895                 noise_params = {
 896                         offset = 0.04,
 897                         scale = 0.02,
 898                         spread = {x=250, y=250, z=250},
 899                         seed = 2,
 900                         octaves = 3,
 901                         persist = 0.66
 902                 },
 903                 biomes = {"taiga", "coniferous_forest"},
 904                 y_min = 2,
 905                 y_max = 31000,
 906                 schematic = minetest.get_modpath("default").."/schematics/pine_tree.mts",
 907                 flags = "place_center_x, place_center_z",
 908         })
 909
 910         -- Acacia tree
 911
 912         minetest.register_decoration({
 913                 deco_type = "schematic",
 914                 place_on = {"default:dirt_with_dry_grass"},
 915                 sidelen = 80,
 916                 noise_params = {
 917                         offset = 0,
 918                         scale = 0.003,
 919                         spread = {x=250, y=250, z=250},
 920                         seed = 2,
 921                         octaves = 3,
 922                         persist = 0.66
 923                 },
 924                 biomes = {"savanna"},
 925                 y_min = 6,
 926                 y_max = 31000,
 927                 schematic = minetest.get_modpath("default").."/schematics/acacia_tree.mts",
 928                 flags = "place_center_x, place_center_z",
 929                 rotation = "random",
 930         })
 931
 932         -- Large cactus
 933
 934         minetest.register_decoration({
 935                 deco_type = "schematic",
 936                 place_on = {"default:desert_sand"},
 937                 sidelen = 80,
 938                 noise_params = {
 939                         offset = -0.0005,
 940                         scale = 0.0015,
 941                         spread = {x=200, y=200, z=200},
 942                         seed = 230,
 943                         octaves = 3,
 944                         persist = 0.6
 945                 },
 946                 biomes = {"desert"},
 947                 y_min = 2,
 948                 y_max = 31000,
 949                 schematic = minetest.get_modpath("default").."/schematics/large_cactus.mts",
 950                 flags = "place_center_x",
 951                 rotation = "random",
 952         })
 953
 954         -- Cactus
 955
 956         minetest.register_decoration({
 957                 deco_type = "simple",
 958                 place_on = {"default:desert_sand"},
 959                 sidelen = 80,
 960                 noise_params = {
 961                         offset = -0.0005,
 962                         scale = 0.0015,
 963                         spread = {x=200, y=200, z=200},
 964                         seed = 230,
 965                         octaves = 3,
 966                         persist = 0.6
 967                 },
 968                 biomes = {"desert"},
 969                 y_min = 2,
 970                 y_max = 31000,
 971                 decoration = "default:cactus",
 972                 height = 2,
 973                 height_max = 5,
 974         })
 975
 976         -- Papyrus
 977
 978         minetest.register_decoration({
 979                 deco_type = "schematic",
 980                 place_on = {"default:sand"},
 981                 sidelen = 16,
 982                 noise_params = {
 983                         offset = -0.3,
 984                         scale = 0.7,
 985                         spread = {x=200, y=200, z=200},
 986                         seed = 354,
 987                         octaves = 3,
 988                         persist = 0.7
 989                 },
 990                 biomes = {"savanna_ocean", "desert_ocean"},
 991                 y_min = 0,
 992                 y_max = 0,
 993                 schematic = minetest.get_modpath("default").."/schematics/papyrus.mts",
 994         })
 995
 996         -- Grasses
 997
 998         register_grass_decoration(-0.03,  0.09,  5)
 999         register_grass_decoration(-0.015, 0.075, 4)
1000         register_grass_decoration(0,      0.06,  3)
1001         register_grass_decoration(0.015,  0.045, 2)
1002         register_grass_decoration(0.03,   0.03,  1)
1003
1004         -- Dry grasses
1005
1006         register_dry_grass_decoration(0.01, 0.05,  5)
1007         register_dry_grass_decoration(0.03, 0.03,  4)
1008         register_dry_grass_decoration(0.05, 0.01,  3)
1009         register_dry_grass_decoration(0.07, -0.01, 2)
1010         register_dry_grass_decoration(0.09, -0.03, 1)
1011
1012         -- Junglegrass
1013
1014         minetest.register_decoration({
1015                 deco_type = "simple",
1016                 place_on = {"default:dirt_with_grass"},
1017                 sidelen = 80,
1018                 fill_ratio = 0.1,
1019                 biomes = {"rainforest"},
1020                 y_min = 1,
1021                 y_max = 31000,
1022                 decoration = "default:junglegrass",
1023         })
1024
1025         -- Dry shrub
1026
1027         minetest.register_decoration({
1028                 deco_type = "simple",
1029                 place_on = {"default:desert_sand", "default:dirt_with_snow"},
1030                 sidelen = 16,
1031                 noise_params = {
1032                         offset = 0,
1033                         scale = 0.02,
1034                         spread = {x=200, y=200, z=200},
1035                         seed = 329,
1036                         octaves = 3,
1037                         persist = 0.6
1038                 },
1039                 biomes = {"desert", "tundra"},
1040                 y_min = 2,
1041                 y_max = 31000,
1042                 decoration = "default:dry_shrub",
1043         })
1044 end
1045
1046
1047 --
1048 -- Generate nyan cats
1049 --
1050
1051 -- All mapgens except singlenode
1052
1053 function default.make_nyancat(pos, facedir, length)
1054         local tailvec = {x = 0, y = 0, z = 0}
1055         if facedir == 0 then
1056                 tailvec.z = 1
1057         elseif facedir == 1 then
1058                 tailvec.x = 1
1059         elseif facedir == 2 then
1060                 tailvec.z = -1
1061         elseif facedir == 3 then
1062                 tailvec.x = -1
1063         else
1064                 facedir = 0
1065                 tailvec.z = 1
1066         end
1067         local p = {x = pos.x, y = pos.y, z = pos.z}
1068         minetest.set_node(p, {name = "default:nyancat", param2 = facedir})
1069         for i = 1, length do
1070                 p.x = p.x + tailvec.x
1071                 p.z = p.z + tailvec.z
1072                 minetest.set_node(p, {name = "default:nyancat_rainbow", param2 = facedir})
1073         end
1074 end
1075
1076 function default.generate_nyancats(minp, maxp, seed)
1077         local height_min = -31000
1078         local height_max = -32
1079         if maxp.y < height_min or minp.y > height_max then
1080                 return
1081         end
1082         local y_min = math.max(minp.y, height_min)
1083         local y_max = math.min(maxp.y, height_max)
1084         local volume = (maxp.x - minp.x + 1) * (y_max - y_min + 1) * (maxp.z - minp.z + 1)
1085         local pr = PseudoRandom(seed + 9324342)
1086         local max_num_nyancats = math.floor(volume / (16 * 16 * 16))
1087         for i = 1, max_num_nyancats do
1088                 if pr:next(0, 1000) == 0 then
1089                         local x0 = pr:next(minp.x, maxp.x)
1090                         local y0 = pr:next(minp.y, maxp.y)
1091                         local z0 = pr:next(minp.z, maxp.z)
1092                         local p0 = {x = x0, y = y0, z = z0}
1093                         default.make_nyancat(p0, pr:next(0, 3), pr:next(3, 15))
1094                 end
1095         end
1096 end
1097
1098
1099 --
1100 -- Detect mapgen to select functions
1101 --
1102
1103 -- Mods using singlenode mapgen can call these functions to enable
1104 -- the use of minetest.generate_ores or minetest.generate_decorations
1105
1106 local mg_params = minetest.get_mapgen_params()
1107 if mg_params.mgname == "v6" then
1108         default.register_ores()
1109         default.register_mgv6_decorations()
1110         minetest.register_on_generated(default.generate_nyancats)
1111 elseif mg_params.mgname ~= "singlenode" then
1112         default.register_ores()
1113         default.register_biomes()
1114         default.register_decorations()
1115         minetest.register_on_generated(default.generate_nyancats)
1116 end