mods/MAPGEN/mcl_biomes/init.lua

   1 local mg_name = minetest.get_mapgen_setting("mg_name")
   2
   3 --
   4 -- Register biomes
   5 --
   6
   7 local function register_classic_superflat_biome()
   8         -- Classic Superflat: bedrock (not part of biome), 2 dirt, 1 grass block
   9         minetest.register_biome({
  10                 name = "flat",
  11                 node_top = "mcl_core:dirt_with_grass",
  12                 depth_top = 1,
  13                 node_filler = "mcl_core:dirt",
  14                 depth_filler = 3,
  15                 node_stone = "mcl_core:dirt",
  16                 y_min = mcl_vars.mg_overworld_min - 512,
  17                 y_max = mcl_vars.mg_overworld_max,
  18                 heat_point = 50,
  19                 humidity_point = 50,
  20         })
  21 end
  22
  23 -- All mapgens except mgv6, flat and singlenode
  24 local function register_biomes()
  25         --[[ OVERWORLD ]]
  26
  27         --[[ These biomes try to resemble MC as good as possible. This means especially the floor cover and
  28         the type of plants and structures (shapes might differ). The terrain itself will be of course different
  29         and depends on the mapgen.
  30         Important: MC also takes the terrain into account while MT biomes don't care about the terrain at all
  31         (except height).
  32         MC has many “M” and “Hills” variants, most of which only differ in terrain compared to their original
  33         counterpart.
  34         In MT, any biome can occour in any terrain, so these variants are implied and are therefore
  35         not explicitly implmented in MCL2. “M” variants are only included if they have another unique feature,
  36         such as a different land cover.
  37         In MCL2, MC biomes are usually split in two parts: A land part and an ocean part. Sometimes there's a beach/shore part as well.
  38
  39         The ocean biomes correspond to the MC Ocean biome.
  40
  41         Other intentionally missing biomes:
  42         * River (generated by valleys and v7)
  43         * Plateau (terrain only)
  44         * Mesa (Bryce) (terrain only)
  45
  46         Tricky are the beach (esp. stone beach) and mushroom island biomes as they have specific conditions we can't check in MT. :(
  47         TODO: Find a way to position these biomes accordingly.
  48
  49         Biomes TODO list:
  50         * Savanna M (coarse dirt instead of dirt)
  51         * Jungle Edge M (super rare but melons are common here)
  52         * Mesa biomes
  53         ]]
  54
  55
  56         -- Ice Plains Spikes
  57         minetest.register_biome({
  58                 name = "ice_plains_spikes",
  59                 node_top = "mcl_core:snowblock",
  60                 depth_top = 2,
  61                 node_filler = "mcl_core:snowblock",
  62                 depth_filler = 1,
  63                 node_water_top = "mcl_core:ice",
  64                 depth_water_top = 2,
  65                 node_river_water = "mcl_core:ice",
  66                 node_riverbed = "mcl_core:sand",
  67                 depth_riverbed = 2,
  68                 y_min = 1,
  69                 y_max = mcl_vars.mg_overworld_max,
  70                 heat_point = 0,
  71                 humidity_point = 73,
  72         })
  73         minetest.register_biome({
  74                 name = "ice_plains_spikes_ocean",
  75                 node_top = "mcl_core:gravel",
  76                 depth_top = 2,
  77                 node_filler = "mcl_core:dirt",
  78                 depth_filler = 3,
  79                 node_water_top = "mcl_core:ice",
  80                 depth_water_top = 2,
  81                 node_river_water = "mcl_core:ice",
  82                 node_riverbed = "mcl_core:sand",
  83                 depth_riverbed = 2,
  84                 y_min = mcl_vars.mg_overworld_min,
  85                 y_max = 0,
  86                 heat_point = 0,
  87                 humidity_point = 73,
  88         })
  89
  90         -- Cold Taiga
  91         minetest.register_biome({
  92                 name = "cold_taiga",
  93                 node_dust = "mcl_core:snow",
  94                 node_top = "mcl_core:dirt_with_grass_snow",
  95                 depth_top = 1,
  96                 node_filler = "mcl_core:dirt",
  97                 depth_filler = 2,
  98                 node_riverbed = "mcl_core:sand",
  99                 depth_riverbed = 2,
 100                 y_min = 3,
 101                 y_max = mcl_vars.mg_overworld_max,
 102                 heat_point = 0,
 103                 humidity_point = 40,
 104         })
 105
 106         minetest.register_biome({
 107                 name = "cold_taiga_beach",
 108                 node_dust = "mcl_core:snow",
 109                 node_top = "mcl_core:sand",
 110                 depth_top = 1,
 111                 node_water_top = "mcl_core:ice",
 112                 depth_water_top = 1,
 113                 node_filler = "mcl_core:sand",
 114                 depth_filler = 2,
 115                 node_riverbed = "mcl_core:sand",
 116                 depth_riverbed = 2,
 117                 y_min = -3,
 118                 y_max = 2,
 119                 heat_point = 0,
 120                 humidity_point = 40,
 121         })
 122
 123         minetest.register_biome({
 124                 name = "cold_taiga_ocean",
 125                 node_top = "mcl_core:dirt",
 126                 depth_top = 1,
 127                 node_filler = "mcl_core:dirt",
 128                 depth_filler = 3,
 129                 node_riverbed = "mcl_core:sand",
 130                 depth_riverbed = 2,
 131                 y_min = mcl_vars.mg_overworld_min,
 132                 y_max = -4,
 133                 heat_point = 0,
 134                 humidity_point = 40,
 135         })
 136
 137         -- Mega Taiga
 138         minetest.register_biome({
 139                 name = "mega_taiga",
 140                 node_top = "mcl_core:podzol",
 141                 depth_top = 1,
 142                 node_filler = "mcl_core:dirt",
 143                 depth_filler = 3,
 144                 node_riverbed = "mcl_core:sand",
 145                 depth_riverbed = 2,
 146                 y_min = 1,
 147                 y_max = mcl_vars.mg_overworld_max,
 148                 heat_point = 26,
 149                 humidity_point = 72,
 150         })
 151
 152         minetest.register_biome({
 153                 name = "mega_taiga_ocean",
 154                 node_top = "mcl_core:dirt",
 155                 depth_top = 1,
 156                 node_filler = "mcl_core:dirt",
 157                 depth_filler = 3,
 158                 node_riverbed = "mcl_core:sand",
 159                 depth_riverbed = 2,
 160                 y_min = mcl_vars.mg_overworld_min,
 161                 y_max = 0,
 162                 heat_point = 26,
 163                 humidity_point = 72,
 164         })
 165
 166         -- Mega Spruce Taiga
 167         minetest.register_biome({
 168                 name = "mega_spruce_taiga",
 169                 node_top = "mcl_core:podzol",
 170                 depth_top = 1,
 171                 node_filler = "mcl_core:dirt",
 172                 depth_filler = 3,
 173                 node_riverbed = "mcl_core:sand",
 174                 depth_riverbed = 2,
 175                 y_min = 1,
 176                 y_max = mcl_vars.mg_overworld_max,
 177                 heat_point = 21,
 178                 humidity_point = 72,
 179         })
 180
 181         minetest.register_biome({
 182                 name = "mega_spruce_taiga_ocean",
 183                 node_top = "mcl_core:dirt",
 184                 depth_top = 1,
 185                 node_filler = "mcl_core:dirt",
 186                 depth_filler = 3,
 187                 node_riverbed = "mcl_core:sand",
 188                 depth_riverbed = 2,
 189                 y_min = mcl_vars.mg_overworld_min,
 190                 y_max = 0,
 191                 heat_point = 21,
 192                 humidity_point = 72,
 193         })
 194
 195         -- Extreme Hills
 196         minetest.register_biome({
 197                 name = "extreme_hills",
 198                 node_top = "mcl_core:dirt_with_grass",
 199                 depth_top = 1,
 200                 node_filler = "mcl_core:dirt",
 201                 depth_filler = 4,
 202                 node_riverbed = "mcl_core:sand",
 203                 depth_riverbed = 4,
 204                 y_min = 4,
 205                 y_max = mcl_vars.mg_overworld_max,
 206                 heat_point = 31,
 207                 humidity_point = 30,
 208         })
 209
 210         minetest.register_biome({
 211                 name = "extreme_hills_beach",
 212                 node_top = "mcl_core:sand",
 213                 depth_top = 1,
 214                 depth_water_top = 1,
 215                 node_filler = "mcl_core:sand",
 216                 depth_filler = 3,
 217                 node_riverbed = "mcl_core:sand",
 218                 depth_riverbed = 4,
 219                 y_min = -3,
 220                 y_max = 3,
 221                 heat_point = 31,
 222                 humidity_point = 30,
 223         })
 224
 225         minetest.register_biome({
 226                 name = "extreme_hills_ocean",
 227                 node_top = "mcl_core:dirt",
 228                 depth_top = 1,
 229                 node_filler = "mcl_core:dirt",
 230                 depth_filler = 4,
 231                 node_riverbed = "mcl_core:sand",
 232                 depth_riverbed = 4,
 233                 y_min = mcl_vars.mg_overworld_min,
 234                 y_max = -4,
 235                 heat_point = 31,
 236                 humidity_point = 30,
 237         })
 238
 239         -- Extreme Hills M
 240         minetest.register_biome({
 241                 name = "extreme_hills_m",
 242                 node_top = "mcl_core:gravel",
 243                 depth_top = 1,
 244                 node_filler = "mcl_core:gravel",
 245                 depth_filler = 3,
 246                 node_riverbed = "mcl_core:gravel",
 247                 depth_riverbed = 3,
 248                 y_min = 1,
 249                 y_max = mcl_vars.mg_overworld_max,
 250                 heat_point = 28,
 251                 humidity_point = 30,
 252         })
 253
 254         minetest.register_biome({
 255                 name = "extreme_hills_m_ocean",
 256                 node_top = "mcl_core:dirt",
 257                 depth_top = 1,
 258                 node_filler = "mcl_core:dirt",
 259                 depth_filler = 3,
 260                 node_riverbed = "mcl_core:sand",
 261                 depth_riverbed = 3,
 262                 y_min = mcl_vars.mg_overworld_min,
 263                 y_max = 0,
 264                 heat_point = 28,
 265                 humidity_point = 30,
 266         })
 267
 268         -- Extreme Hills+
 269         -- This biome is identical to Extreme Hills on the surface but has snow-covered mountains with spruce/oak
 270         -- forests above a certain hight.
 271         minetest.register_biome({
 272                 name = "extreme_hills_plus",
 273                 node_top = "mcl_core:dirt_with_grass",
 274                 depth_top = 1,
 275                 node_filler = "mcl_core:dirt",
 276                 depth_filler = 4,
 277                 node_riverbed = "mcl_core:sand",
 278                 depth_riverbed = 4,
 279                 y_min = 1,
 280                 y_max = 44,
 281                 heat_point = 31,
 282                 humidity_point = 35,
 283         })
 284
 285         ---- Sub-biome Extra biome for Extreme Hills+ for those snow forests
 286         minetest.register_biome({
 287                 name = "extreme_hills_plus_snowtop",
 288                 node_dust = "mcl_core:snow",
 289                 node_top = "mcl_core:dirt_with_grass_snow",
 290                 depth_top = 1,
 291                 node_filler = "mcl_core:dirt",
 292                 depth_filler = 4,
 293                 node_riverbed = "mcl_core:sand",
 294                 depth_riverbed = 4,
 295                 y_min = 45,
 296                 y_max = mcl_vars.mg_overworld_max,
 297                 heat_point = 31,
 298                 humidity_point = 35,
 299         })
 300
 301         minetest.register_biome({
 302                 name = "extreme_hills_plus_ocean",
 303                 node_top = "mcl_core:dirt",
 304                 depth_top = 1,
 305                 node_filler = "mcl_core:dirt",
 306                 depth_filler = 4,
 307                 node_riverbed = "mcl_core:sand",
 308                 depth_riverbed = 4,
 309                 y_min = mcl_vars.mg_overworld_min,
 310                 y_max = 0,
 311                 heat_point = 31,
 312                 humidity_point = 35,
 313         })
 314
 315         -- Stone Beach
 316         minetest.register_biome({
 317                 name = "stone_beach",
 318                 y_min = -6,
 319                 y_max = mcl_vars.mg_overworld_max,
 320                 heat_point = 31,
 321                 humidity_point = 15,
 322         })
 323         minetest.register_biome({
 324                 name = "stone_beach_ocean",
 325                 node_top = "mcl_core:dirt",
 326                 depth_top = 1,
 327                 node_filler = "mcl_core:dirt",
 328                 filler_depth = 2,
 329                 node_riverbed = "mcl_core:sand",
 330                 depth_riverbed = 1,
 331                 y_min = mcl_vars.mg_overworld_min,
 332                 y_max = -7,
 333                 heat_point = 31,
 334                 humidity_point = 15,
 335         })
 336
 337         -- Ice Plains
 338         minetest.register_biome({
 339                 name = "ice_plains",
 340                 node_dust = "mcl_core:snow",
 341                 node_top = "mcl_core:dirt_with_grass_snow",
 342                 depth_top = 1,
 343                 node_filler = "mcl_core:dirt",
 344                 depth_filler = 2,
 345                 node_water_top = "mcl_core:ice",
 346                 depth_water_top = 2,
 347                 node_river_water = "mcl_core:ice",
 348                 node_riverbed = "mcl_core:sand",
 349                 depth_riverbed = 2,
 350                 y_min = 1,
 351                 y_max = mcl_vars.mg_overworld_max,
 352                 heat_point = 13,
 353                 humidity_point = 79,
 354         })
 355
 356         minetest.register_biome({
 357                 name = "ice_plains_ocean",
 358                 node_top = "mcl_core:dirt",
 359                 depth_top = 1,
 360                 node_filler = "mcl_core:dirt",
 361                 depth_filler = 3,
 362                 node_riverbed = "mcl_core:sand",
 363                 depth_riverbed = 2,
 364                 y_min = mcl_vars.mg_overworld_min,
 365                 y_max = 0,
 366                 heat_point = 13,
 367                 humidity_point = 79,
 368         })
 369
 370         -- Plains
 371         minetest.register_biome({
 372                 name = "plains",
 373                 node_top = "mcl_core:dirt_with_grass",
 374                 depth_top = 1,
 375                 node_filler = "mcl_core:dirt",
 376                 depth_filler = 2,
 377                 node_riverbed = "mcl_core:sand",
 378                 depth_riverbed = 2,
 379                 y_min = 4,
 380                 y_max = mcl_vars.mg_overworld_max,
 381                 heat_point = 26,
 382                 humidity_point = 45,
 383         })
 384
 385         minetest.register_biome({
 386                 name = "plains_beach",
 387                 node_top = "mcl_core:sand",
 388                 depth_top = 1,
 389                 node_filler = "mcl_core:sand",
 390                 depth_filler = 2,
 391                 node_riverbed = "mcl_core:sand",
 392                 depth_riverbed = 2,
 393                 y_min = 3,
 394                 y_max = 1,
 395                 heat_point = 26,
 396                 humidity_point = 45,
 397         })
 398
 399         minetest.register_biome({
 400                 name = "plains_ocean",
 401                 node_top = "mcl_core:dirt",
 402                 depth_top = 1,
 403                 node_filler = "mcl_core:dirt",
 404                 depth_filler = 3,
 405                 node_riverbed = "mcl_core:sand",
 406                 depth_riverbed = 2,
 407                 y_min = mcl_vars.mg_overworld_min,
 408                 y_max = 0,
 409                 heat_point = 26,
 410                 humidity_point = 45,
 411         })
 412
 413         -- TODO: Sunflower Plains
 414 --[[
 415         minetest.register_biome({
 416                 name = "sunflower_plains",
 417                 node_top = "mcl_core:dirt_with_grass",
 418                 depth_top = 1,
 419                 node_filler = "mcl_core:dirt",
 420                 depth_filler = 2,
 421                 node_riverbed = "mcl_core:sand",
 422                 depth_riverbed = 2,
 423                 y_min = 4,
 424                 y_max = mcl_vars.mg_overworld_max,
 425                 heat_point = 26,
 426                 humidity_point = 22.5,
 427         })
 428
 429         minetest.register_biome({
 430                 name = "sunflower_plains_ocean",
 431                 node_top = "mcl_core:dirt",
 432                 depth_top = 1,
 433                 node_filler = "mcl_core:dirt",
 434                 depth_filler = 3,
 435                 node_riverbed = "mcl_core:dirt",
 436                 depth_riverbed = 2,
 437                 y_min = mcl_vars.mg_overworld_min,
 438                 y_max = 0,
 439                 heat_point = 26,
 440                 humidity_point = 22.5,
 441         })
 442 ]]
 443
 444         -- Taiga
 445         minetest.register_biome({
 446                 name = "taiga",
 447                 node_top = "mcl_core:dirt_with_grass",
 448                 depth_top = 1,
 449                 node_filler = "mcl_core:dirt",
 450                 depth_filler = 3,
 451                 node_riverbed = "mcl_core:sand",
 452                 depth_riverbed = 2,
 453                 y_min = 4,
 454                 y_max = mcl_vars.mg_overworld_max,
 455                 heat_point = 47,
 456                 humidity_point = 73,  --was 70
 457         })
 458
 459         minetest.register_biome({
 460                 name = "taiga_beach",
 461                 node_top = "mcl_core:sand",
 462                 depth_top = 1,
 463                 node_filler = "mcl_core:dirt",
 464                 depth_filler = 3,
 465                 node_riverbed = "mcl_core:sand",
 466                 depth_riverbed = 2,
 467                 y_min = 1,
 468                 y_max = 3,
 469                 heat_point = 47,
 470                 humidity_point = 73,  --was 70
 471         })
 472
 473         minetest.register_biome({
 474                 name = "taiga_ocean",
 475                 node_top = "mcl_core:sand",
 476                 depth_top = 1,
 477                 node_filler = "mcl_core:dirt",
 478                 depth_filler = 3,
 479                 node_riverbed = "mcl_core:sand",
 480                 depth_riverbed = 2,
 481                 y_min = mcl_vars.mg_overworld_min,
 482                 y_max = 0,
 483                 heat_point = 47,
 484                 humidity_point = 73,  --was 70
 485         })
 486
 487         -- Forest
 488         minetest.register_biome({
 489                 name = "forest",
 490                 node_top = "mcl_core:dirt_with_grass",
 491                 depth_top = 1,
 492                 node_filler = "mcl_core:dirt",
 493                 depth_filler = 3,
 494                 node_riverbed = "mcl_core:sand",
 495                 depth_riverbed = 2,
 496                 y_min = 1,
 497                 y_max = mcl_vars.mg_overworld_max,
 498                 heat_point = 33,
 499                 humidity_point = 44,  --was 68
 500         })
 501
 502         minetest.register_biome({
 503                 name = "forest_beach",
 504                 node_top = "mcl_core:sand",
 505                 depth_top = 1,
 506                 node_filler = "mcl_core:dirt",
 507                 depth_filler = 3,
 508                 node_riverbed = "mcl_core:sand",
 509                 depth_riverbed = 2,
 510                 y_min = -1,
 511                 y_max = 0,
 512                 heat_point = 33,
 513                 humidity_point = 44,  --was 68
 514         })
 515
 516         minetest.register_biome({
 517                 name = "forest_ocean",
 518                 node_top = "mcl_core:dirt",
 519                 depth_top = 1,
 520                 node_filler = "mcl_core:dirt",
 521                 depth_filler = 3,
 522                 node_riverbed = "mcl_core:sand",
 523                 depth_riverbed = 2,
 524                 y_min = mcl_vars.mg_overworld_min,
 525                 y_max = -2,
 526                 heat_point = 33,
 527                 humidity_point = 44,  --was 68
 528         })
 529
 530         -- Flower Forest
 531         minetest.register_biome({
 532                 name = "flower_forest",
 533                 node_top = "mcl_core:dirt_with_grass",
 534                 depth_top = 1,
 535                 node_filler = "mcl_core:dirt",
 536                 depth_filler = 3,
 537                 node_riverbed = "mcl_core:sand",
 538                 depth_riverbed = 2,
 539                 y_min = 2,
 540                 y_max = mcl_vars.mg_overworld_max,
 541                 heat_point = 33,
 542                 humidity_point = 51,
 543         })
 544
 545         minetest.register_biome({
 546                 name = "flower_forest_beach",
 547                 node_top = "mcl_core:sand",
 548                 depth_top = 1,
 549                 node_filler = "mcl_core:dirt",
 550                 depth_filler = 3,
 551                 node_riverbed = "mcl_core:sand",
 552                 depth_riverbed = 2,
 553                 y_min = -2,
 554                 y_max = 1,
 555                 heat_point = 33,
 556                 humidity_point = 51,
 557         })
 558
 559         minetest.register_biome({
 560                 name = "flower_forest_ocean",
 561                 node_top = "mcl_core:dirt",
 562                 depth_top = 1,
 563                 node_filler = "mcl_core:dirt",
 564                 depth_filler = 3,
 565                 node_riverbed = "mcl_core:sand",
 566                 depth_riverbed = 2,
 567                 y_min = mcl_vars.mg_overworld_min,
 568                 y_max = -3,
 569                 heat_point = 33,
 570                 humidity_point = 51,
 571         })
 572
 573         -- Birch Forest
 574         minetest.register_biome({
 575                 name = "birch_forest",
 576                 node_top = "mcl_core:dirt_with_grass",
 577                 depth_top = 1,
 578                 node_filler = "mcl_core:dirt",
 579                 depth_filler = 3,
 580                 node_riverbed = "mcl_core:sand",
 581                 depth_riverbed = 2,
 582                 y_min = 1,
 583                 y_max = mcl_vars.mg_overworld_max,
 584                 heat_point = 20,
 585                 humidity_point = 49,
 586         })
 587
 588         minetest.register_biome({
 589                 name = "birch_forest_ocean",
 590                 node_top = "mcl_core:dirt",
 591                 depth_top = 1,
 592                 node_filler = "mcl_core:dirt",
 593                 depth_filler = 3,
 594                 node_riverbed = "mcl_core:sand",
 595                 depth_riverbed = 2,
 596                 y_min = mcl_vars.mg_overworld_min,
 597                 y_max = 0,
 598                 heat_point = 20,
 599                 humidity_point = 49,
 600         })
 601
 602         -- Birch Forest M
 603         minetest.register_biome({
 604                 name = "birch_forest_m",
 605                 node_top = "mcl_core:dirt_with_grass",
 606                 depth_top = 1,
 607                 node_filler = "mcl_core:dirt",
 608                 depth_filler = 3,
 609                 node_riverbed = "mcl_core:sand",
 610                 depth_riverbed = 2,
 611                 y_min = 1,
 612                 y_max = mcl_vars.mg_overworld_max,
 613                 heat_point = 20,
 614                 humidity_point = 44,
 615         })
 616
 617         minetest.register_biome({
 618                 name = "birch_forest_m_ocean",
 619                 node_top = "mcl_core:dirt",
 620                 depth_top = 1,
 621                 node_filler = "mcl_core:dirt",
 622                 depth_filler = 3,
 623                 node_riverbed = "mcl_core:sand",
 624                 depth_riverbed = 2,
 625                 y_min = mcl_vars.mg_overworld_min,
 626                 y_max = 0,
 627                 heat_point = 20,
 628                 humidity_point = 44,
 629         })
 630
 631         -- Desert (Red Sand)
 632         -- FIXME: Not a real biome in MC
 633 --[[
 634         minetest.register_biome({
 635                 name = "red_desert",
 636                 node_top = "mcl_core:redsand",
 637                 depth_top = 1,
 638                 node_filler = "mcl_core:redsand",
 639                 depth_filler = 2,
 640                 node_riverbed = "mcl_core:sand",
 641                 depth_riverbed = 2,
 642                 node_stone = "mcl_core:redsandstone",
 643                 y_min = 1,
 644                 y_max = mcl_vars.mg_overworld_max,
 645                 heat_point = 64,
 646                 humidity_point = 37,  --was 16
 647         })
 648
 649         minetest.register_biome({
 650                 name = "red_desert_ocean",
 651                 node_top = "mcl_core:redsand",
 652                 depth_top = 1,
 653                 node_filler = "mcl_core:redsand",
 654                 depth_filler = 3,
 655                 node_riverbed = "mcl_core:redsand",
 656                 depth_riverbed = 2,
 657                 y_min = mcl_vars.mg_overworld_min,
 658                 y_max = 0,
 659                 heat_point = 64,
 660                 humidity_point = 37,  --was 16
 661         })
 662 ]]
 663
 664         -- Desert
 665         minetest.register_biome({
 666                 name = "desert",
 667                 node_top = "mcl_core:sand",
 668                 depth_top = 1,
 669                 node_filler = "mcl_core:sand",
 670                 depth_filler = 2,
 671                 node_riverbed = "mcl_core:sand",
 672                 depth_riverbed = 2,
 673                 node_stone = "mcl_core:sandstone",
 674                 y_min = 1,
 675                 y_max = mcl_vars.mg_overworld_max,
 676                 heat_point = 57,
 677                 humidity_point = 0,  --was 0
 678         })
 679
 680         minetest.register_biome({
 681                 name = "desert_ocean",
 682                 node_top = "mcl_core:sand",
 683                 depth_top = 1,
 684                 node_filler = "mcl_core:sand",
 685                 depth_filler = 3,
 686                 node_riverbed = "mcl_core:sand",
 687                 depth_riverbed = 2,
 688                 y_min = mcl_vars.mg_overworld_min,
 689                 y_max = 0,
 690                 heat_point = 57,
 691                 humidity_point = 0,  --was 0
 692         })
 693
 694         -- Roofed Forest
 695         minetest.register_biome({
 696                 name = "roofed_forest",
 697                 node_top = "mcl_core:dirt_with_grass",
 698                 depth_top = 1,
 699                 node_filler = "mcl_core:dirt",
 700                 depth_filler = 2,
 701                 node_riverbed = "mcl_core:sand",
 702                 depth_riverbed = 2,
 703                 y_min = 1,
 704                 y_max = mcl_vars.mg_overworld_max,
 705                 heat_point = 26,
 706                 humidity_point = 0,
 707         })
 708
 709         minetest.register_biome({
 710                 name = "roofed_forest_ocean",
 711                 node_top = "mcl_core:dirt",
 712                 depth_top = 1,
 713                 node_filler = "mcl_core:dirt",
 714                 depth_filler = 1,
 715                 node_riverbed = "mcl_core:sand",
 716                 depth_riverbed = 2,
 717                 y_min = mcl_vars.mg_overworld_min,
 718                 y_max = 0,
 719                 heat_point = 26,
 720                 humidity_point = 0,
 721         })
 722
 723         -- Mesa
 724         minetest.register_biome({
 725                 name = "mesa",
 726                 node_top = "mcl_colorblocks:hardened_clay",
 727                 depth_top = 1,
 728                 node_filler = "mcl_colorblocks:hardened_clay",
 729                 node_stone = "mcl_colorblocks:hardened_clay",
 730                 y_min = 11,
 731                 y_max = mcl_vars.mg_overworld_max,
 732                 heat_point = 88,
 733                 humidity_point = 20,
 734         })
 735
 736         -- Helper biome for the red sand at the bottom of mesas.
 737         -- This is part of the regular mesa.
 738         minetest.register_biome({
 739                 name = "mesa_sandlevel",
 740                 node_top = "mcl_core:redsand",
 741                 depth_top = 1,
 742                 node_filler = "mcl_colorblocks:hardened_clay_orange",
 743                 depth_filler = 3,
 744                 node_riverbed = "mcl_core:redsand",
 745                 depth_riverbed = 1,
 746                 node_stone = "mcl_colorblocks:hardened_clay_orange",
 747                 y_min = 1,
 748                 y_max = 10,
 749                 heat_point = 88,
 750                 humidity_point = 20,
 751         })
 752
 753         minetest.register_biome({
 754                 name = "mesa_ocean",
 755                 node_top = "mcl_core:redsand",
 756                 depth_top = 3,
 757                 node_filler = "mcl_colorblocks:hardened_clay",
 758                 depth_filler = 2,
 759                 node_riverbed = "mcl_core:redsand",
 760                 depth_riverbed = 2,
 761                 y_min = mcl_vars.mg_overworld_min,
 762                 y_max = 0,
 763                 heat_point = 88,
 764                 humidity_point = 20,
 765         })
 766
 767         -- Mesa Plateau F
 768         -- Identical to Mesa below Y=30. Y=30 and above is replaced with an oak forest
 769         minetest.register_biome({
 770                 name = "mesa_plateau_f",
 771                 node_top = "mcl_colorblocks:hardened_clay",
 772                 depth_top = 1,
 773                 node_filler = "mcl_colorblocks:hardened_clay",
 774                 node_stone = "mcl_colorblocks:hardened_clay",
 775                 y_min = 11,
 776                 y_max = 29,
 777                 heat_point = 64,
 778                 humidity_point = 37,
 779         })
 780
 781         -- The actual plateau of this biome
 782         -- This is a mesa plateau for grass blocks, tall grass and oaks.
 783         minetest.register_biome({
 784                 name = "mesa_plateau_f_grasstop",
 785                 node_top = "mcl_core:dirt_with_grass",
 786                 depth_top = 1,
 787                 node_filler = "mcl_core:dirt",
 788                 filler_depth = 1,
 789                 node_stone = "mcl_colorblocks:hardened_clay",
 790                 y_min = 30,
 791                 y_max = mcl_vars.mg_overworld_max,
 792                 heat_point = 64,
 793                 humidity_point = 37,
 794         })
 795
 796         -- Helper biome for the red sand at the bottom.
 797         minetest.register_biome({
 798                 name = "mesa_plateau_f_sandlevel",
 799                 node_top = "mcl_core:redsand",
 800                 depth_top = 1,
 801                 node_filler = "mcl_colorblocks:hardened_clay_orange",
 802                 depth_filler = 3,
 803                 node_riverbed = "mcl_core:redsand",
 804                 depth_riverbed = 1,
 805                 node_stone = "mcl_colorblocks:hardened_clay_orange",
 806                 y_min = 1,
 807                 y_max = 10,
 808                 heat_point = 64,
 809                 humidity_point = 37,
 810         })
 811
 812         minetest.register_biome({
 813                 name = "mesa_plateau_f_ocean",
 814                 node_top = "mcl_core:dirt",
 815                 depth_top = 3,
 816                 node_filler = "mcl_core:dirt",
 817                 depth_filler = 2,
 818                 node_riverbed = "mcl_core:redsand",
 819                 depth_riverbed = 2,
 820                 y_min = mcl_vars.mg_overworld_min,
 821                 y_max = 0,
 822                 heat_point = 64,
 823                 humidity_point = 37,
 824         })
 825
 826         -- Savanna
 827         minetest.register_biome({
 828                 name = "savanna",
 829                 node_top = "mcl_core:dirt_with_grass",
 830                 depth_top = 1,
 831                 node_filler = "mcl_core:coarse_dirt",
 832                 depth_filler = 2,
 833                 node_riverbed = "mcl_core:sand",
 834                 depth_riverbed = 2,
 835                 y_min = 1,
 836                 y_max = mcl_vars.mg_overworld_max,
 837                 heat_point = 50,
 838                 humidity_point = 46,
 839         })
 840
 841         minetest.register_biome({
 842                 name = "savanna_beach",
 843                 node_top = "mcl_core:sand",
 844                 depth_top = 1,
 845                 node_filler = "mcl_core:dirt",
 846                 depth_filler = 3,
 847                 node_riverbed = "mcl_core:sand",
 848                 depth_riverbed = 2,
 849                 y_min = -1,
 850                 y_max = 0,
 851                 heat_point = 50,
 852                 humidity_point = 46,
 853         })
 854
 855         minetest.register_biome({
 856                 name = "savanna_ocean",
 857                 node_top = "mcl_core:dirt",
 858                 depth_top = 1,
 859                 node_filler = "mcl_core:coarse_dirt",
 860                 depth_filler = 3,
 861                 node_riverbed = "mcl_core:sand",
 862                 depth_riverbed = 2,
 863                 y_min = mcl_vars.mg_overworld_min,
 864                 y_max = -2,
 865                 heat_point = 50,
 866                 humidity_point = 46,
 867         })
 868
 869         -- Jungle
 870         minetest.register_biome({
 871                 name = "jungle",
 872                 node_top = "mcl_core:dirt_with_grass",
 873                 depth_top = 1,
 874                 node_filler = "mcl_core:dirt",
 875                 depth_filler = 3,
 876                 node_riverbed = "mcl_core:sand",
 877                 depth_riverbed = 2,
 878                 y_min = 1,
 879                 y_max = mcl_vars.mg_overworld_max,
 880                 heat_point = 90,
 881                 humidity_point = 91,
 882         })
 883
 884         minetest.register_biome({
 885                 name = "jungle_shore",
 886                 node_top = "mcl_core:dirt",
 887                 depth_top = 1,
 888                 node_filler = "mcl_core:dirt",
 889                 depth_filler = 3,
 890                 node_riverbed = "mcl_core:sand",
 891                 depth_riverbed = 2,
 892                 y_min = -1,
 893                 y_max = 0,
 894                 heat_point = 90,
 895                 humidity_point = 91,
 896         })
 897
 898         minetest.register_biome({
 899                 name = "jungle_ocean",
 900                 node_top = "mcl_core:dirt",
 901                 depth_top = 1,
 902                 node_filler = "mcl_core:dirt",
 903                 depth_filler = 3,
 904                 node_riverbed = "mcl_core:sand",
 905                 depth_riverbed = 2,
 906                 y_min = mcl_vars.mg_overworld_min,
 907                 y_max = -2,
 908                 heat_point = 90,
 909                 humidity_point =  91,
 910         })
 911
 912         -- Jungle Edge
 913         minetest.register_biome({
 914                 name = "jungle_edge",
 915                 node_top = "mcl_core:dirt_with_grass",
 916                 depth_top = 1,
 917                 node_filler = "mcl_core:dirt",
 918                 depth_filler = 3,
 919                 node_riverbed = "mcl_core:sand",
 920                 depth_riverbed = 2,
 921                 y_min = 1,
 922                 y_max = mcl_vars.mg_overworld_max,
 923                 heat_point = 90,
 924                 humidity_point = 87,
 925         })
 926
 927         minetest.register_biome({
 928                 name = "jungle_edge_shore",
 929                 node_top = "mcl_core:dirt",
 930                 depth_top = 1,
 931                 node_filler = "mcl_core:dirt",
 932                 depth_filler = 3,
 933                 node_riverbed = "mcl_core:sand",
 934                 depth_riverbed = 2,
 935                 y_min = -1,
 936                 y_max = 0,
 937                 heat_point = 90,
 938                 humidity_point = 87,
 939         })
 940
 941         minetest.register_biome({
 942                 name = "jungle_edge_ocean",
 943                 node_top = "mcl_core:dirt",
 944                 depth_top = 1,
 945                 node_filler = "mcl_core:dirt",
 946                 depth_filler = 3,
 947                 node_riverbed = "mcl_core:sand",
 948                 depth_riverbed = 2,
 949                 y_min = mcl_vars.mg_overworld_min,
 950                 y_max = -2,
 951                 heat_point = 90,
 952                 humidity_point = 87,
 953         })
 954
 955         -- Swampland
 956         minetest.register_biome({
 957                 name = "swampland",
 958                 node_top = "mcl_core:dirt_with_grass",
 959                 depth_top = 1,
 960                 node_filler = "mcl_core:dirt",
 961                 depth_filler = 3,
 962                 node_riverbed = "mcl_core:sand",
 963                 depth_riverbed = 2,
 964                 y_min = 1,
 965                 -- Note: Limited in height!
 966                 y_max = 23,
 967                 heat_point = 60,
 968                 humidity_point = 99,
 969         })
 970
 971         minetest.register_biome({
 972                 name = "swampland_shore",
 973                 node_top = "mcl_core:dirt",
 974                 depth_top = 1,
 975                 node_filler = "mcl_core:dirt",
 976                 depth_filler = 3,
 977                 node_riverbed = "mcl_core:sand",
 978                 depth_riverbed = 2,
 979                 y_min = -4,
 980                 y_max = 0,
 981                 heat_point = 60,
 982                 humidity_point = 99,
 983         })
 984
 985         minetest.register_biome({
 986                 name = "swampland_ocean",
 987                 node_top = "mcl_core:sand",
 988                 depth_top = 1,
 989                 node_filler = "mcl_core:sand",
 990                 depth_filler = 3,
 991                 node_riverbed = "mcl_core:sand",
 992                 depth_riverbed = 2,
 993                 y_min = 20,
 994                 y_max = -4,
 995                 heat_point = 60,
 996                 humidity_point = 99,
 997         })
 998
 999         -- Mushroom Island / Mushroom Island Shore
1000         -- TODO: Make sure these biomes only spawn in islands
1001         minetest.register_biome({
1002                 name = "mushroom_island",
1003                 node_top = "mcl_core:mycelium",
1004                 depth_top = 1,
1005                 node_filler = "mcl_core:dirt",
1006                 depth_filler = 3,
1007                 node_riverbed = "mcl_core:sand",
1008                 depth_riverbed = 2,
1009                 y_min = 4,
1010                 -- Note: Limited in height!
1011                 y_max = 20,
1012                 heat_point = 99,
1013                 humidity_point = 99,
1014         })
1015
1016         minetest.register_biome({
1017                 name = "mushroom_island_shore",
1018                 node_top = "mcl_core:mycelium",
1019                 depth_top = 1,
1020                 node_filler = "mcl_core:dirt",
1021                 depth_filler = 3,
1022                 node_riverbed = "mcl_core:sand",
1023                 depth_riverbed = 2,
1024                 y_min = 1,
1025                 y_max = 3,
1026                 heat_point = 99,
1027                 humidity_point = 99,
1028         })
1029
1030         minetest.register_biome({
1031                 name = "mushroom_island_ocean",
1032                 node_top = "mcl_core:dirt",
1033                 depth_top = 1,
1034                 node_filler = "mcl_core:dirt",
1035                 depth_filler = 3,
1036                 node_riverbed = "mcl_core:sand",
1037                 depth_riverbed = 2,
1038                 y_min = mcl_vars.mg_overworld_min,
1039                 y_max = 0,
1040                 heat_point = 99,
1041                 humidity_point = 99,
1042         })
1043
1044 end
1045
1046 -- Register biomes of non-Overworld biomes
1047 local function register_dimension_biomes()
1048         --[[ REALMS ]]
1049
1050         --[[ THE NETHER ]]
1051         minetest.register_biome({
1052                 name = "nether",
1053                 node_filler = "mcl_nether:netherrack",
1054                 node_stone = "mcl_nether:netherrack",
1055                 node_water = "air",
1056                 node_river_water = "air",
1057                 y_min = mcl_vars.mg_nether_min,
1058                 -- FIXME: For some reason the Nether stops generating early if this constant is not added.
1059                 -- Figure out why.
1060                 y_max = mcl_vars.mg_nether_max + 80,
1061                 heat_point = 100,
1062                 humidity_point = 0,
1063         })
1064
1065         --[[ THE END ]]
1066         minetest.register_biome({
1067                 name = "end",
1068                 node_stone = "air",
1069                 node_filler = "air",
1070                 node_water = "air",
1071                 node_river_water = "air",
1072                 -- FIXME: For some reason the End stops generating early if this constant is not added.
1073                 -- Figure out why.
1074                 y_min = mcl_vars.mg_end_min,
1075                 y_max = mcl_vars.mg_end_max + 80,
1076                 heat_point = 50,
1077                 humidity_point = 50,
1078         })
1079
1080 end
1081
1082 -- Register “fake” ores directly related to the biomes
1083 local function register_biomelike_ores()
1084
1085         -- Random coarse dirt floor in mega taiga
1086         minetest.register_ore({
1087                 ore_type        = "sheet",
1088                 ore             = "mcl_core:coarse_dirt",
1089                 wherein         = {"mcl_core:podzol", "mcl_core:dirt"},
1090                 clust_scarcity  = 1,
1091                 clust_num_ores  = 12,
1092                 clust_size      = 10,
1093                 y_min           = mcl_vars.mg_overworld_min,
1094                 y_max           = mcl_vars.mg_overworld_max,
1095                 noise_threshold = 0.2,
1096                 noise_params = {offset=0, scale=15, spread={x=130, y=130, z=130}, seed=24, octaves=3, persist=0.70},
1097                 biomes = { "mega_taiga" },
1098         })
1099
1100         -- Small dirt patches in Extreme Hills M
1101         minetest.register_ore({
1102                 ore_type        = "blob",
1103                 -- TODO: Should be grass block. But generating this as ore means gras blocks will spawn undeground. :-(
1104                 ore             = "mcl_core:dirt",
1105                 wherein         = {"mcl_core:gravel"},
1106                 clust_scarcity  = 5000,
1107                 clust_num_ores  = 12,
1108                 clust_size      = 4,
1109                 y_min           = mcl_vars.mg_overworld_min,
1110                 y_max           = mcl_vars.mg_overworld_max,
1111                 noise_threshold = 0.2,
1112                 noise_params = {offset=0, scale=5, spread={x=250, y=250, z=250}, seed=64, octaves=3, persist=0.60},
1113                 biomes = { "extreme_hills_m" },
1114         })
1115
1116         -- Mesa strata (registered as sheet ores)
1117
1118         -- Helper function
1119         -- Colors to use: silver (light grey), brown, orange, red, yellow, white
1120         local stratum = function(y_min, height, color, seed)
1121                 if not height then
1122                         height = 1
1123                 end
1124                 if not seed then
1125                         seed = 39
1126                 end
1127                 local y_max = y_min + height-1
1128                 minetest.register_ore({
1129                         ore_type = "sheet",
1130                         ore = "mcl_colorblocks:hardened_clay_"..color,
1131                         wherein = {"mcl_colorblocks:hardened_clay"},
1132                         column_height_min = height,
1133                         column_height_max = height,
1134                         y_min = y_min,
1135                         y_max = y_max,
1136                         noise_threshold = -1.0,
1137                         noise_params = {offset=0, scale=1, spread={x=3100, y=3100, z=3100}, seed=seed, octaves=3, persist=0.70},
1138                         biomes = { "mesa", "mesa_plateau_f" },
1139                 })
1140         end
1141
1142         stratum(11, 3, "orange")
1143
1144         -- Create strata for up to Y = 256
1145         -- This is semi-random based on the mapseed.
1146         local seed = minetest.get_mapgen_setting("seed")
1147         local i = 0
1148         repeat
1149                 seed = seed + i
1150
1151                 stratum(17+i, 1, "orange", seed)
1152                 stratum(19+i, 1, "silver", seed)
1153                 stratum(21+i, 1, "brown", seed)
1154                 stratum(22+i, 1, "red", seed)
1155                 stratum(24+i, 1, "silver", seed)
1156                 stratum(26+i, 1, "brown", seed)
1157                 stratum(27+i, 1, "white", seed)
1158                 stratum(29+i, 1, "orange", seed)
1159                 stratum(34+i, 1, "red", seed)
1160                 stratum(42+i, 1, "orange", seed)
1161                 stratum(44+i, 1, "yellow", seed)
1162                 stratum(46+i, 1, "brown", seed)
1163                 stratum(48+i, 1, "silver", seed)
1164                 stratum(51+i, 1, "white", seed)
1165                 stratum(55+i, 2, "yellow", seed)
1166                 stratum(58+i, 2, "orange", seed)
1167                 stratum(62+i, 1, "brown", seed)
1168                 stratum(68+i, 3, "orange", seed)
1169                 stratum(73+i, 2, "brown", seed)
1170                 stratum(76+i, 1, "white", seed)
1171                 -- Repeat strata above Y=76
1172
1173                 i = i + 66
1174         until i > 256
1175 end
1176
1177 -- Non-Overworld ores
1178 local function register_dimension_ores()
1179
1180         --[[ NETHER GENERATION ]]
1181
1182         -- Soul sand
1183         minetest.register_ore({
1184                 ore_type        = "sheet",
1185                 ore             = "mcl_nether:soul_sand",
1186                 -- Note: Stone is included only for v6 mapgen support. Netherrack is not generated naturally
1187                 -- in v6, but instead set with the on_generated function in mcl_mapgen_core.
1188                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1189                 clust_scarcity  = 13 * 13 * 13,
1190                 clust_size      = 5,
1191                 y_min           = mcl_vars.mg_nether_min,
1192                 y_max           = mcl_util.layer_to_y(64, "nether"),
1193                 noise_threshold = 0.0,
1194                 noise_params    = {
1195                         offset = 0.5,
1196                         scale = 0.1,
1197                         spread = {x = 5, y = 5, z = 5},
1198                         seed = 2316,
1199                         octaves = 1,
1200                         persist = 0.0
1201                 },
1202         })
1203
1204         -- Magma blocks
1205         minetest.register_ore({
1206                 ore_type       = "blob",
1207                 ore            = "mcl_nether:magma",
1208                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1209                 clust_scarcity = 8*8*8,
1210                 clust_num_ores = 45,
1211                 clust_size     = 6,
1212                 y_min          = mcl_util.layer_to_y(23, "nether"),
1213                 y_max          = mcl_util.layer_to_y(37, "nether"),
1214         })
1215         minetest.register_ore({
1216                 ore_type       = "blob",
1217                 ore            = "mcl_nether:magma",
1218                 wherein        = {"mcl_nether:netherrack"},
1219                 clust_scarcity = 10*10*10,
1220                 clust_num_ores = 65,
1221                 clust_size     = 8,
1222                 y_min          = mcl_util.layer_to_y(23, "nether"),
1223                 y_max          = mcl_util.layer_to_y(37, "nether"),
1224         })
1225
1226         -- Glowstone
1227         minetest.register_ore({
1228                 ore_type        = "blob",
1229                 ore             = "mcl_nether:glowstone",
1230                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1231                 clust_scarcity  = 26 * 26 * 26,
1232                 clust_size      = 5,
1233                 y_min           = mcl_vars.mg_lava_nether_max + 10,
1234                 y_max           = mcl_vars.mg_nether_max,
1235                 noise_threshold = 0.0,
1236                 noise_params    = {
1237                         offset = 0.5,
1238                         scale = 0.1,
1239                         spread = {x = 5, y = 5, z = 5},
1240                         seed = 17676,
1241                         octaves = 1,
1242                         persist = 0.0
1243                 },
1244         })
1245
1246         -- Gravel (Nether)
1247         minetest.register_ore({
1248                 ore_type        = "sheet",
1249                 ore             = "mcl_core:gravel",
1250                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1251                 column_height_min = 1,
1252                 column_height_max = 1,
1253                 column_midpoint_factor = 0,
1254                 y_min           = mcl_util.layer_to_y(63, "nether"),
1255                 -- This should be 65, but for some reason with this setting, the sheet ore really stops at 65. o_O
1256                 y_max           = mcl_util.layer_to_y(65+2, "nether"),
1257                 noise_threshold = 0.2,
1258                 noise_params    = {
1259                         offset = 0.0,
1260                         scale = 0.5,
1261                         spread = {x = 20, y = 20, z = 20},
1262                         seed = 766,
1263                         octaves = 3,
1264                         persist = 0.6,
1265                 },
1266         })
1267
1268         -- Nether quartz
1269         minetest.register_ore({
1270                 ore_type       = "scatter",
1271                 ore            = "mcl_nether:quartz_ore",
1272                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1273                 clust_scarcity = 850,
1274                 clust_num_ores = 4, -- MC cluster amount: 4-10
1275                 clust_size     = 3,
1276                 y_min = mcl_vars.mg_nether_min,
1277                 y_max = mcl_vars.mg_nether_max,
1278         })
1279         minetest.register_ore({
1280                 ore_type       = "scatter",
1281                 ore            = "mcl_nether:quartz_ore",
1282                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1283                 clust_scarcity = 1650,
1284                 clust_num_ores = 8, -- MC cluster amount: 4-10
1285                 clust_size     = 4,
1286                 y_min = mcl_vars.mg_nether_min,
1287                 y_max = mcl_vars.mg_nether_max,
1288         })
1289
1290         -- Lava springs in the Nether
1291         minetest.register_ore({
1292                 ore_type       = "scatter",
1293                 ore            = "mcl_nether:nether_lava_source",
1294                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1295                 clust_scarcity = 500,
1296                 clust_num_ores = 1,
1297                 clust_size     = 1,
1298                 y_min           = mcl_vars.mg_nether_min,
1299                 y_max           = mcl_vars.mg_lava_nether_max + 1,
1300         })
1301
1302         minetest.register_ore({
1303                 ore_type       = "scatter",
1304                 ore            = "mcl_nether:nether_lava_source",
1305                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1306                 clust_scarcity = 1000,
1307                 clust_num_ores = 1,
1308                 clust_size     = 1,
1309                 y_min           = mcl_vars.mg_lava_nether_max + 2,
1310                 y_max           = mcl_vars.mg_lava_nether_max + 12,
1311         })
1312
1313         minetest.register_ore({
1314                 ore_type       = "scatter",
1315                 ore            = "mcl_nether:nether_lava_source",
1316                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1317                 clust_scarcity = 2000,
1318                 clust_num_ores = 1,
1319                 clust_size     = 1,
1320                 y_min           = mcl_vars.mg_lava_nether_max + 13,
1321                 y_max           = mcl_vars.mg_lava_nether_max + 48,
1322         })
1323         minetest.register_ore({
1324                 ore_type       = "scatter",
1325                 ore            = "mcl_nether:nether_lava_source",
1326                 wherein         = {"mcl_nether:netherrack", "mcl_core:stone"},
1327                 clust_scarcity = 3500,
1328                 clust_num_ores = 1,
1329                 clust_size     = 1,
1330                 y_min           = mcl_vars.mg_lava_nether_max + 49,
1331                 y_max           = mcl_vars.mg_nether_max,
1332         })
1333
1334         --[[ THE END ]]
1335
1336         -- Generate fake End
1337         -- TODO: Remove both "ores" when there's a better End generator
1338
1339         minetest.register_ore({
1340                 ore_type        = "sheet",
1341                 ore             = "mcl_end:end_stone",
1342                 wherein         = {"air"},
1343                 y_min           = mcl_vars.mg_end_min+64,
1344                 y_max           = mcl_vars.mg_end_min+80,
1345                 column_height_min = 6,
1346                 column_height_max = 7,
1347                 column_midpoint_factor = 0.0,
1348                 noise_params = {
1349                         offset  = -2,
1350                         scale   = 8,
1351                         spread  = {x=100, y=100, z=100},
1352                         seed    = 2999,
1353                         octaves = 5,
1354                         persist = 0.55,
1355                 },
1356                 noise_threshold = 0,
1357         })
1358
1359         minetest.register_ore({
1360                 ore_type        = "sheet",
1361                 ore             = "mcl_end:end_stone",
1362                 wherein         = {"air"},
1363                 y_min           = mcl_vars.mg_end_min+64,
1364                 y_max           = mcl_vars.mg_end_min+80,
1365                 column_height_min = 4,
1366                 column_height_max = 4,
1367                 column_midpoint_factor = 0.0,
1368                 noise_params = {
1369                         offset  = -4,
1370                         scale   = 3,
1371                         spread  = {x=200, y=200, z=200},
1372                         seed    = 5390,
1373                         octaves = 5,
1374                         persist = 0.6,
1375                 },
1376                 noise_threshold = 0,
1377         })
1378
1379 end
1380
1381
1382 -- All mapgens except mgv6
1383
1384 -- Template to register a grass or fern decoration
1385 local function register_grass_decoration(grasstype, offset, scale, biomes)
1386         local place_on, seed, node
1387         if grasstype == "fern" then
1388                 node = "mcl_flowers:fern"
1389                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:podzol"}
1390                 seed = 333
1391         elseif grasstype == "tallgrass" then
1392                 node = "mcl_flowers:tallgrass"
1393                 place_on = {"mcl_core:dirt_with_grass"}
1394                 seed = 420
1395         end
1396         local noise = {
1397                 offset = offset,
1398                 scale = scale,
1399                 spread = {x = 200, y = 200, z = 200},
1400                 seed = seed,
1401                 octaves = 3,
1402                 persist = 0.6
1403         }
1404         minetest.register_decoration({
1405                 deco_type = "simple",
1406                 place_on = place_on,
1407                 sidelen = 16,
1408                 noise_params = noise,
1409                 biomes = biomes,
1410                 y_min = 1,
1411                 y_max = mcl_vars.mg_overworld_max,
1412                 decoration = node,
1413         })
1414 end
1415
1416 local function register_decorations()
1417         -- Large ice spike
1418         minetest.register_decoration({
1419                 deco_type = "schematic",
1420                 place_on = {"mcl_core:snowblock", "mcl_core:snow", "mcl_core:dirt_with_grass_snow"},
1421                 sidelen = 80,
1422                 noise_params = {
1423                         offset = 0.00040,
1424                         scale = 0.001,
1425                         spread = {x = 250, y = 250, z = 250},
1426                         seed = 1133,
1427                         octaves = 4,
1428                         persist = 0.67,
1429                 },
1430                 biomes = {"ice_plains_spikes"},
1431                 y_min = 4,
1432                 y_max = mcl_vars.mg_overworld_max,
1433                 schematic = minetest.get_modpath("mcl_structures").."/schematics/mcl_structures_ice_spike_large.mts",
1434                 rotation = "random",
1435                 flags = "place_center_x, place_center_z",
1436         })
1437
1438         -- Small ice spike
1439         minetest.register_decoration({
1440                 deco_type = "schematic",
1441                 place_on = {"mcl_core:snowblock", "mcl_core:snow", "mcl_core:dirt_with_grass_snow"},
1442                 sidelen = 80,
1443                 noise_params = {
1444                         offset = 0.005,
1445                         scale = 0.001,
1446                         spread = {x = 250, y = 250, z = 250},
1447                         seed = 1133,
1448                         octaves = 4,
1449                         persist = 0.67,
1450                 },
1451                 biomes = {"ice_plains_spikes"},
1452                 y_min = 4,
1453                 y_max = mcl_vars.mg_overworld_max,
1454                 schematic = minetest.get_modpath("mcl_structures").."/schematics/mcl_structures_ice_spike_small.mts",
1455                 rotation = "random",
1456                 flags = "place_center_x, place_center_z",
1457         })
1458
1459         -- Oak
1460         -- Large oaks
1461         for i=1, 2 do
1462                 minetest.register_decoration({
1463                         deco_type = "schematic",
1464                         place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1465                         sidelen = 80,
1466                         noise_params = {
1467                                 offset = 0.00075,
1468                                 scale = 0.0011,
1469                                 spread = {x = 250, y = 250, z = 250},
1470                                 seed = 3,
1471                                 octaves = 3,
1472                                 persist = 0.66
1473                         },
1474                         biomes = {"forest"},
1475                         y_min = 1,
1476                         y_max = mcl_vars.mg_overworld_max,
1477                         schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_large_"..i..".mts",
1478                         flags = "place_center_x, place_center_z",
1479                         rotation = "random",
1480                 })
1481
1482                 minetest.register_decoration({
1483                         deco_type = "schematic",
1484                         place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:dirt_with_grass_snow"},
1485                         sidelen = 80,
1486                         noise_params = {
1487                                 offset = -0.0004,
1488                                 scale = 0.001,
1489                                 spread = {x = 250, y = 250, z = 250},
1490                                 seed = 3,
1491                                 octaves = 3,
1492                                 persist = 0.6
1493                         },
1494                         biomes = {"extreme_hills", "extreme_hills_m", "extreme_hills_plus", "extreme_hills_plus_snowtop"},
1495                         y_min = 1,
1496                         y_max = mcl_vars.mg_overworld_max,
1497                         schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_large_"..i..".mts",
1498                         flags = "place_center_x, place_center_z",
1499                         rotation = "random",
1500                 })
1501         end
1502         -- Small classic oak (forest, flower forest and ice plains)
1503         minetest.register_decoration({
1504                 deco_type = "schematic",
1505                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1506                 sidelen = 16,
1507                 noise_params = {
1508                         offset = 0.025,
1509                         scale = 0.0022,
1510                         spread = {x = 250, y = 250, z = 250},
1511                         seed = 2,
1512                         octaves = 3,
1513                         persist = 0.66
1514                 },
1515                 biomes = {"forest"},
1516                 y_min = 1,
1517                 y_max = mcl_vars.mg_overworld_max,
1518                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1519                 flags = "place_center_x, place_center_z",
1520                 rotation = "random",
1521         })
1522         minetest.register_decoration({
1523                 deco_type = "schematic",
1524                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1525                 sidelen = 16,
1526                 noise_params = {
1527                         offset = 0.01,
1528                         scale = 0.0022,
1529                         spread = {x = 250, y = 250, z = 250},
1530                         seed = 2,
1531                         octaves = 3,
1532                         persist = 0.66
1533                 },
1534                 biomes = {"flower_forest"},
1535                 y_min = 1,
1536                 y_max = mcl_vars.mg_overworld_max,
1537                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1538                 flags = "place_center_x, place_center_z",
1539                 rotation = "random",
1540         })
1541         minetest.register_decoration({
1542                 deco_type = "schematic",
1543                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:dirt_with_grass_snow"},
1544                 sidelen = 16,
1545                 noise_params = {
1546                         offset = 0.0,
1547                         scale = 0.002,
1548                         spread = {x = 250, y = 250, z = 250},
1549                         seed = 2,
1550                         octaves = 3,
1551                         persist = 0.7
1552                 },
1553                 biomes = {"extreme_hills", "extreme_hills_m", "extreme_hills_plus", "extreme_hills_plus_snowtop"},
1554                 y_min = 1,
1555                 y_max = mcl_vars.mg_overworld_max,
1556                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1557                 flags = "place_center_x, place_center_z",
1558                 rotation = "random",
1559         })
1560
1561         minetest.register_decoration({
1562                 deco_type = "schematic",
1563                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt_with_grass_snow", "mcl_core:dirt"},
1564                 sidelen = 16,
1565                 noise_params = {
1566                         offset = 0.006,
1567                         scale = 0.002,
1568                         spread = {x = 250, y = 250, z = 250},
1569                         seed = 2,
1570                         octaves = 3,
1571                         persist = 0.7
1572                 },
1573                 biomes = {"extreme_hills_plus", "extreme_hills_plus_snowtop"},
1574                 y_min = 50,
1575                 y_max = mcl_vars.mg_overworld_max,
1576                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1577                 flags = "place_center_x, place_center_z",
1578                 rotation = "random",
1579         })
1580         minetest.register_decoration({
1581                 deco_type = "schematic",
1582                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1583                 sidelen = 16,
1584                 noise_params = {
1585                         offset = 0.015,
1586                         scale = 0.002,
1587                         spread = {x = 250, y = 250, z = 250},
1588                         seed = 2,
1589                         octaves = 3,
1590                         persist = 0.7
1591                 },
1592                 biomes = {"mesa_plateau_f_grasstop"},
1593                 y_min = 30,
1594                 y_max = mcl_vars.mg_overworld_max,
1595                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1596                 flags = "place_center_x, place_center_z",
1597                 rotation = "random",
1598         })
1599
1600         minetest.register_decoration({
1601                 deco_type = "schematic",
1602                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:dirt_with_grass_snow"},
1603                 sidelen = 16,
1604                 noise_params = {
1605                         offset = 0.0,
1606                         scale = 0.0002,
1607                         spread = {x = 250, y = 250, z = 250},
1608                         seed = 2,
1609                         octaves = 3,
1610                         persist = 0.7
1611                 },
1612                 biomes = {"ice_plains"},
1613                 y_min = 1,
1614                 y_max = mcl_vars.mg_overworld_max,
1615                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1616                 flags = "place_center_x, place_center_z",
1617                 rotation = "random",
1618         })
1619         -- Rare balloon oak
1620         minetest.register_decoration({
1621                 deco_type = "schematic",
1622                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1623                 sidelen = 16,
1624                 noise_params = {
1625                         offset = 0.002083,
1626                         scale = 0.0022,
1627                         spread = {x = 250, y = 250, z = 250},
1628                         seed = 3,
1629                         octaves = 3,
1630                         persist = 0.6,
1631                 },
1632                 biomes = {"forest"},
1633                 y_min = 1,
1634                 y_max = mcl_vars.mg_overworld_max,
1635                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_balloon.mts",
1636                 flags = "place_center_x, place_center_z",
1637                 rotation = "random",
1638         })
1639         -- Swamp oak
1640         minetest.register_decoration({
1641                 deco_type = "schematic",
1642                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1643                 sidelen = 80,
1644                 noise_params = {
1645                         offset = 0.0055,
1646                         scale = 0.0011,
1647                         spread = {x = 250, y = 250, z = 250},
1648                         seed = 5005,
1649                         octaves = 5,
1650                         persist = 0.6,
1651                 },
1652                 biomes = {"swampland", "swampland_shore"},
1653                 y_min = 0,
1654                 y_max = mcl_vars.mg_overworld_max,
1655                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_swamp.mts",
1656                 flags = "place_center_x, place_center_z",
1657                 rotation = "random",
1658         })
1659
1660         -- Jungle tree
1661         minetest.register_decoration({
1662                 deco_type = "schematic",
1663                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1664                 sidelen = 80,
1665                 fill_ratio = 0.0025,
1666                 biomes = {"jungle"},
1667                 y_min = 4,
1668                 y_max = mcl_vars.mg_overworld_max,
1669                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_jungle_tree_huge.mts",
1670                 flags = "place_center_x, place_center_z",
1671                 rotation = "random",
1672         })
1673         minetest.register_decoration({
1674                 deco_type = "schematic",
1675                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1676                 sidelen = 80,
1677                 fill_ratio = 0.045,
1678                 biomes = {"jungle"},
1679                 y_min = 1,
1680                 y_max = mcl_vars.mg_overworld_max,
1681                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_jungle_tree.mts",
1682                 flags = "place_center_x, place_center_z",
1683                 rotation = "random",
1684         })
1685         minetest.register_decoration({
1686                 deco_type = "schematic",
1687                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1688                 sidelen = 80,
1689                 fill_ratio = 0.0045,
1690                 biomes = {"jungle_edge"},
1691                 y_min = 1,
1692                 y_max = mcl_vars.mg_overworld_max,
1693                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_jungle_tree.mts",
1694                 flags = "place_center_x, place_center_z",
1695                 rotation = "random",
1696         })
1697
1698         -- Oak in jungle / jungle edge
1699         minetest.register_decoration({
1700                 deco_type = "schematic",
1701                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1702                 sidelen = 80,
1703                 fill_ratio = 0.004,
1704                 biomes = {"jungle"},
1705                 y_min = 1,
1706                 y_max = mcl_vars.mg_overworld_max,
1707                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1708                 flags = "place_center_x, place_center_z",
1709                 rotation = "random",
1710         })
1711         minetest.register_decoration({
1712                 deco_type = "schematic",
1713                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1714                 sidelen = 80,
1715                 fill_ratio = 0.0004,
1716                 biomes = {"jungle_edge"},
1717                 y_min = 1,
1718                 y_max = mcl_vars.mg_overworld_max,
1719                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_oak_classic.mts",
1720                 flags = "place_center_x, place_center_z",
1721                 rotation = "random",
1722         })
1723
1724         -- Spruce
1725         local function quick_spruce(seed, offset, sprucename, biomes, y)
1726                 if not y then
1727                         y = 2
1728                 end
1729                 minetest.register_decoration({
1730                         deco_type = "schematic",
1731                         place_on = {"mcl_core:dirt_with_grass_snow", "mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:podzol"},
1732                         sidelen = 16,
1733                         noise_params = {
1734                                 offset = offset,
1735                                 scale = 0.0006,
1736                                 spread = {x = 250, y = 250, z = 250},
1737                                 seed = seed,
1738                                 octaves = 3,
1739                                 persist = 0.66
1740                         },
1741                         biomes = biomes,
1742                         y_min = y,
1743                         y_max = mcl_vars.mg_overworld_max,
1744                         schematic = minetest.get_modpath("mcl_core").."/schematics/"..sprucename,
1745                         flags = "place_center_x, place_center_z",
1746                 })
1747         end
1748
1749         -- Huge spruce
1750         quick_spruce(3000, 0.0013, "mcl_core_spruce_huge_1.mts", {"mega_spruce_taiga"})
1751         quick_spruce(4000, 0.00142, "mcl_core_spruce_huge_2.mts", {"mega_spruce_taiga"})
1752         quick_spruce(6000, 0.0013, "mcl_core_spruce_huge_3.mts", {"mega_spruce_taiga"})
1753
1754         quick_spruce(3000, 0.0008, "mcl_core_spruce_huge_up_1.mts", {"mega_taiga"})
1755         quick_spruce(4000, 0.0008, "mcl_core_spruce_huge_up_2.mts", {"mega_taiga"})
1756         quick_spruce(6000, 0.0008, "mcl_core_spruce_huge_up_3.mts", {"mega_taiga"})
1757
1758
1759         -- Common spruce
1760         quick_spruce(11000, 0.00150, "mcl_core_spruce_5.mts", {"taiga", "cold_taiga"})
1761
1762         quick_spruce(2500, 0.00325, "mcl_core_spruce_1.mts", {"mega_spruce_taiga", "mega_taiga", "taiga", "cold_taiga"})
1763         quick_spruce(7000, 0.00425, "mcl_core_spruce_3.mts", {"mega_spruce_taiga", "mega_taiga", "taiga", "cold_taiga"})
1764         quick_spruce(9000, 0.00325, "mcl_core_spruce_4.mts", {"mega_spruce_taiga", "mega_taiga", "taiga", "cold_taiga"})
1765
1766         quick_spruce(9500, 0.00500, "mcl_core_spruce_tall.mts", {"mega_taiga"})
1767
1768         quick_spruce(5000, 0.00250, "mcl_core_spruce_2.mts", {"mega_spruce_taiga", "mega_taiga"})
1769
1770         quick_spruce(11000, 0.000025, "mcl_core_spruce_5.mts", {"extreme_hills", "extreme_hills_m"})
1771         quick_spruce(2500, 0.00005, "mcl_core_spruce_1.mts", {"extreme_hills", "extreme_hills_m"})
1772         quick_spruce(7000, 0.00005, "mcl_core_spruce_3.mts", {"extreme_hills", "extreme_hills_m"})
1773         quick_spruce(9000, 0.00005, "mcl_core_spruce_4.mts", {"extreme_hills", "extreme_hills_m"})
1774
1775         quick_spruce(11000, 0.001, "mcl_core_spruce_5.mts", {"extreme_hills_plus", "extreme_hills_plus_snowtop"}, 50)
1776         quick_spruce(2500, 0.002, "mcl_core_spruce_1.mts", {"extreme_hills_plus", "extreme_hills_plus_snowtop"}, 50)
1777         quick_spruce(7000, 0.003, "mcl_core_spruce_3.mts", {"extreme_hills_plus", "extreme_hills_plus_snowtop"}, 50)
1778         quick_spruce(9000, 0.002, "mcl_core_spruce_4.mts", {"extreme_hills_plus", "extreme_hills_plus_snowtop"}, 50)
1779
1780
1781         -- Small lollipop spruce
1782         minetest.register_decoration({
1783                 deco_type = "schematic",
1784                 place_on = {"mcl_core:dirt_with_grass_snow", "mcl_core:dirt_with_grass", "mcl_core:podzol"},
1785                 sidelen = 16,
1786                 noise_params = {
1787                         offset = 0.004,
1788                         scale = 0.0022,
1789                         spread = {x = 250, y = 250, z = 250},
1790                         seed = 2500,
1791                         octaves = 3,
1792                         persist = 0.66
1793                 },
1794                 biomes = {"taiga", "cold_taiga"},
1795                 y_min = 2,
1796                 y_max = mcl_vars.mg_overworld_max,
1797                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_spruce_lollipop.mts",
1798                 flags = "place_center_x, place_center_z",
1799         })
1800
1801         -- Matchstick spruce: Very few leaves, tall trunk
1802         minetest.register_decoration({
1803                 deco_type = "schematic",
1804                 place_on = {"mcl_core:dirt_with_grass_snow", "mcl_core:dirt_with_grass", "mcl_core:podzol"},
1805                 sidelen = 80,
1806                 noise_params = {
1807                         offset = -0.025,
1808                         scale = 0.025,
1809                         spread = {x = 250, y = 250, z = 250},
1810                         seed = 2566,
1811                         octaves = 5,
1812                         persist = 0.60,
1813                 },
1814                 biomes = {"taiga", "cold_taiga"},
1815                 y_min = 3,
1816                 y_max = mcl_vars.mg_overworld_max,
1817                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_spruce_matchstick.mts",
1818                 flags = "place_center_x, place_center_z",
1819         })
1820
1821         -- Acacia (many variants)
1822         for a=1, 7 do
1823                 minetest.register_decoration({
1824                         deco_type = "schematic",
1825                         place_on = {"mcl_core:dirt_with_grass", "mcl_core:coarse_dirt"},
1826                         sidelen = 16,
1827                         fill_ratio = 0.0002,
1828                         biomes = {"savanna"},
1829                         y_min = 1,
1830                         y_max = mcl_vars.mg_overworld_max,
1831                         schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_acacia_"..a..".mts",
1832                         flags = "place_center_x, place_center_z",
1833                         rotation = "random",
1834                 })
1835         end
1836
1837         -- Birch
1838         minetest.register_decoration({
1839                 deco_type = "schematic",
1840                 place_on = {"mcl_core:dirt_with_grass"},
1841                 sidelen = 16,
1842                 noise_params = {
1843                         offset = 0.03,
1844                         scale = 0.0025,
1845                         spread = {x = 250, y = 250, z = 250},
1846                         seed = 11,
1847                         octaves = 3,
1848                         persist = 0.66
1849                 },
1850                 biomes = {"birch_forest"},
1851                 y_min = 1,
1852                 y_max = mcl_vars.mg_overworld_max,
1853                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_birch.mts",
1854                 flags = "place_center_x, place_center_z",
1855         })
1856         minetest.register_decoration({
1857                 deco_type = "schematic",
1858                 place_on = {"mcl_core:dirt_with_grass"},
1859                 sidelen = 16,
1860                 noise_params = {
1861                         offset = 0.03,
1862                         scale = 0.0025,
1863                         spread = {x = 250, y = 250, z = 250},
1864                         seed = 11,
1865                         octaves = 3,
1866                         persist = 0.66
1867                 },
1868                 biomes = {"birch_forest_m"},
1869                 y_min = 1,
1870                 y_max = mcl_vars.mg_overworld_max,
1871                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_birch_tall.mts",
1872                 flags = "place_center_x, place_center_z",
1873         })
1874
1875         minetest.register_decoration({
1876                 deco_type = "schematic",
1877                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
1878                 sidelen = 16,
1879                 noise_params = {
1880                         offset = 0.000333,
1881                         scale = -0.0015,
1882                         spread = {x = 250, y = 250, z = 250},
1883                         seed = 11,
1884                         octaves = 3,
1885                         persist = 0.66
1886                 },
1887                 biomes = {"forest", "flower_forest"},
1888                 y_min = 1,
1889                 y_max = mcl_vars.mg_overworld_max,
1890                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_birch.mts",
1891                 flags = "place_center_x, place_center_z",
1892         })
1893         minetest.register_decoration({
1894                 deco_type = "schematic",
1895                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt_with_grass_snow"},
1896                 sidelen = 16,
1897                 noise_params = {
1898                         offset = -0.00075,
1899                         scale = -0.0015,
1900                         spread = {x = 250, y = 250, z = 250},
1901                         seed = 11,
1902                         octaves = 3,
1903                         persist = 0.7
1904                 },
1905                 biomes = {"ice_plains"},
1906                 y_min = 1,
1907                 y_max = mcl_vars.mg_overworld_max,
1908                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_birch.mts",
1909                 flags = "place_center_x, place_center_z",
1910         })
1911
1912         -- Dark Oak
1913         minetest.register_decoration({
1914                 deco_type = "schematic",
1915                 place_on = {"mcl_core:dirt_with_grass"},
1916                 sidelen = 16,
1917                 noise_params = {
1918                         offset = 0.05,
1919                         scale = 0.0015,
1920                         spread = {x = 125, y = 125, z = 125},
1921                         seed = 223,
1922                         octaves = 3,
1923                         persist = 0.66
1924                 },
1925                 biomes = {"roofed_forest"},
1926                 y_min = 4,
1927                 y_max = mcl_vars.mg_overworld_max,
1928                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_dark_oak.mts",
1929                 flags = "place_center_x, place_center_z",
1930                 rotation = "random",
1931         })
1932
1933
1934         local ratio_mushroom = 0.0001
1935         local ratio_mushroom_huge = ratio_mushroom * (11/12)
1936         local ratio_mushroom_giant = ratio_mushroom * (1/12)
1937         local ratio_mushroom_mycelium = 0.002
1938         local ratio_mushroom_mycelium_huge = ratio_mushroom_mycelium * (11/12)
1939         local ratio_mushroom_mycelium_giant = ratio_mushroom_mycelium * (1/12)
1940
1941         -- Huge Brown Mushroom
1942         minetest.register_decoration({
1943                 deco_type = "schematic",
1944                 place_on = { "mcl_core:dirt_with_grass", "mcl_core:dirt" },
1945                 sidelen = 80,
1946                 fill_ratio = ratio_mushroom_huge,
1947                 biomes = { "roofed_forest" },
1948                 y_min = 1,
1949                 y_max = mcl_vars.mg_overworld_max,
1950                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_huge_brown.mts",
1951                 flags = "place_center_x, place_center_z",
1952                 rotation = "random",
1953         })
1954         minetest.register_decoration({
1955                 deco_type = "schematic",
1956                 place_on = { "mcl_core:dirt_with_grass", "mcl_core:dirt" },
1957                 sidelen = 80,
1958                 fill_ratio = ratio_mushroom_giant,
1959                 biomes = { "roofed_forest" },
1960                 y_min = 1,
1961                 y_max = mcl_vars.mg_overworld_max,
1962                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_giant_brown.mts",
1963                 flags = "place_center_x, place_center_z",
1964                 rotation = "random",
1965         })
1966
1967         minetest.register_decoration({
1968                 deco_type = "schematic",
1969                 place_on = { "mcl_core:mycelium" },
1970                 sidelen = 80,
1971                 fill_ratio = ratio_mushroom_mycelium_huge,
1972                 biomes = { "mushroom_island", "mushroom_island_shore" },
1973                 y_min = 1,
1974                 y_max = mcl_vars.mg_overworld_max,
1975                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_huge_brown.mts",
1976                 flags = "place_center_x, place_center_z",
1977                 rotation = "random",
1978         })
1979         minetest.register_decoration({
1980                 deco_type = "schematic",
1981                 place_on = { "mcl_core:mycelium" },
1982                 sidelen = 80,
1983                 fill_ratio = ratio_mushroom_mycelium_giant,
1984                 biomes = { "mushroom_island", "mushroom_island_shore" },
1985                 y_min = 1,
1986                 y_max = mcl_vars.mg_overworld_max,
1987                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_giant_brown.mts",
1988                 flags = "place_center_x, place_center_z",
1989                 rotation = "random",
1990         })
1991
1992         -- Huge Red Mushroom
1993         minetest.register_decoration({
1994                 deco_type = "schematic",
1995                 place_on = { "mcl_core:dirt_with_grass", "mcl_core:dirt" },
1996                 sidelen = 80,
1997                 fill_ratio = ratio_mushroom_huge,
1998                 biomes = { "roofed_forest" },
1999                 y_min = 1,
2000                 y_max = mcl_vars.mg_overworld_max,
2001                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_huge_red.mts",
2002                 flags = "place_center_x, place_center_z",
2003                 rotation = "random",
2004         })
2005         minetest.register_decoration({
2006                 deco_type = "schematic",
2007                 place_on = { "mcl_core:dirt_with_grass", "mcl_core:dirt" },
2008                 sidelen = 80,
2009                 fill_ratio = ratio_mushroom_giant,
2010                 biomes = { "roofed_forest" },
2011                 y_min = 1,
2012                 y_max = mcl_vars.mg_overworld_max,
2013                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_giant_red.mts",
2014                 flags = "place_center_x, place_center_z",
2015                 rotation = "random",
2016         })
2017
2018         minetest.register_decoration({
2019                 deco_type = "schematic",
2020                 place_on = { "mcl_core:mycelium" },
2021                 sidelen = 80,
2022                 fill_ratio = ratio_mushroom_mycelium_huge,
2023                 biomes = { "mushroom_island", "mushroom_island_shore" },
2024                 y_min = 1,
2025                 y_max = mcl_vars.mg_overworld_max,
2026                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_huge_red.mts",
2027                 flags = "place_center_x, place_center_z",
2028                 rotation = "random",
2029         })
2030         minetest.register_decoration({
2031                 deco_type = "schematic",
2032                 place_on = { "mcl_core:mycelium" },
2033                 sidelen = 80,
2034                 fill_ratio = ratio_mushroom_mycelium_giant,
2035                 biomes = { "mushroom_island", "mushroom_island_shore" },
2036                 y_min = 1,
2037                 y_max = mcl_vars.mg_overworld_max,
2038                 schematic = minetest.get_modpath("mcl_mushrooms").."/schematics/mcl_mushrooms_giant_red.mts",
2039                 flags = "place_center_x, place_center_z",
2040                 rotation = "random",
2041         })
2042
2043         -- Moss stone boulder (3×3)
2044         minetest.register_decoration({
2045                 deco_type = "schematic",
2046                 place_on = {"mcl_core:podzol", "mcl_core:dirt", "mcl_core:coarse_dirt"},
2047                 sidelen = 80,
2048                 noise_params = {
2049                         offset = 0.00015,
2050                         scale = 0.001,
2051                         spread = {x = 300, y = 300, z = 300},
2052                         seed = 775703,
2053                         octaves = 4,
2054                         persist = 0.63,
2055                 },
2056                 biomes = {"mega_taiga", "mega_spruce_taiga"},
2057                 y_min = 1,
2058                 y_max = mcl_vars.mg_overworld_max,
2059                 schematic = minetest.get_modpath("mcl_structures").."/schematics/mcl_structures_boulder.mts",
2060                 flags = "place_center_x, place_center_z",
2061         })
2062
2063         -- Small moss stone boulder (2×2)
2064         minetest.register_decoration({
2065                 deco_type = "schematic",
2066                 place_on = {"mcl_core:podzol", "mcl_core:dirt", "mcl_core:coarse_dirt"},
2067                 sidelen = 80,
2068                 noise_params = {
2069                         offset = 0.001,
2070                         scale = 0.001,
2071                         spread = {x = 300, y = 300, z = 300},
2072                         seed = 775703,
2073                         octaves = 4,
2074                         persist = 0.63,
2075                 },
2076                 biomes = {"mega_taiga", "mega_spruce_taiga"},
2077                 y_min = 1,
2078                 y_max = mcl_vars.mg_overworld_max,
2079                 schematic = minetest.get_modpath("mcl_structures").."/schematics/mcl_structures_boulder_small.mts",
2080                 flags = "place_center_x, place_center_z",
2081         })
2082
2083         -- Cacti
2084         minetest.register_decoration({
2085                 deco_type = "simple",
2086                 place_on = {"group:sand"},
2087                 sidelen = 16,
2088                 noise_params = {
2089                         offset = -0.012,
2090                         scale = 0.024,
2091                         spread = {x = 100, y = 100, z = 100},
2092                         seed = 257,
2093                         octaves = 3,
2094                         persist = 0.6
2095                 },
2096                 y_min = 4,
2097                 y_max = mcl_vars.mg_overworld_max,
2098                 decoration = "mcl_core:cactus",
2099                 biomes = {"red_desert","desert","mesa","mesa_sandlevel","mesa_plateau_f","mesa_plateau_f_sandlevel"},
2100                 height = 1,
2101                 height_max = 3,
2102         })
2103
2104         -- Sugar canes
2105         minetest.register_decoration({
2106                 deco_type = "simple",
2107                 place_on = {"mcl_core:dirt", "mcl_core:coarse_dirt", "mcl_core:dirt_with_grass", "group:sand", "mcl_core:podzol", "mcl_core:reeds"},
2108                 sidelen = 16,
2109                 noise_params = {
2110                         offset = -0.3,
2111                         scale = 0.7,
2112                         spread = {x = 100, y = 100, z = 100},
2113                         seed = 2,
2114                         octaves = 3,
2115                         persist = 0.7
2116                 },
2117                 biomes = {"plains", "plains_beach", "taiga_beach", "ice_plains", "cold_taiga_beach", "savanna_beach", "forest_beach", "red_desert", "desert"},
2118                 y_min = 1,
2119                 y_max = mcl_vars.mg_overworld_max,
2120                 decoration = "mcl_core:reeds",
2121                 height = 1,
2122                 height_max = 3,
2123                 spawn_by = { "mcl_core:water_source", "group:frosted_ice" },
2124                 num_spawn_by = 1,
2125         })
2126         minetest.register_decoration({
2127                 deco_type = "simple",
2128                 place_on = {"mcl_core:dirt", "mcl_core:coarse_dirt", "mcl_core:dirt_with_grass", "group:sand", "mcl_core:podzol", "mcl_core:reeds"},
2129                 sidelen = 16,
2130                 noise_params = {
2131                         offset = 0.0,
2132                         scale = 0.5,
2133                         spread = {x = 100, y = 100, z = 100},
2134                         seed = 2,
2135                         octaves = 3,
2136                         persist = 0.7,
2137                 },
2138                 biomes = {"swampland"},
2139                 y_min = 1,
2140                 y_max = mcl_vars.mg_overworld_max,
2141                 decoration = "mcl_core:reeds",
2142                 height = 1,
2143                 height_max = 3,
2144                 spawn_by = { "mcl_core:water_source", "group:frosted_ice" },
2145                 num_spawn_by = 1,
2146         })
2147
2148         -- Doubletall grass
2149         minetest.register_decoration({
2150                 deco_type = "schematic",
2151                 schematic = {
2152                         size = { x=1, y=3, z=1 },
2153                         data = {
2154                                 { name = "air", prob = 0 },
2155                                 { name = "mcl_flowers:double_grass", param1=255, },
2156                                 { name = "mcl_flowers:double_grass_top", param1=255, },
2157                         },
2158                 },
2159                 replacements = {
2160                         ["mcl_flowers:tallgrass"] = "mcl_flowers:double_grass"
2161                 },
2162                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt_with_grass_snow"},
2163                 sidelen = 16,
2164                 noise_params = {
2165                         offset = -0.01,
2166                         scale = 0.03,
2167                         spread = {x = 300, y = 300, z = 300},
2168                         seed = 420,
2169                         octaves = 2,
2170                         persist = 0.6,
2171                 },
2172                 y_min = 1,
2173                 y_max = mcl_vars.mg_overworld_max,
2174                 biomes = {"plains", "sunflower_plains", "taiga", "forest", "flower_forest", "birch_forest", "birch_forest_m", "roofed_forest", "savanna", "mesa_plateau_f_grasstop" },
2175         })
2176
2177         -- Large ferns
2178         minetest.register_decoration({
2179                 deco_type = "schematic",
2180                 schematic = {
2181                         size = { x=1, y=3, z=1 },
2182                         data = {
2183                                 { name = "air", prob = 0 },
2184                                 { name = "mcl_flowers:double_fern", param1=255, },
2185                                 { name = "mcl_flowers:double_fern_top", param1=255, },
2186                         },
2187                 },
2188                 replacements = {
2189                         ["mcl_flowers:fern"] = "mcl_flowers:double_fern"
2190                 },
2191                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:podzol", "mcl_core:podzol_snow"},
2192
2193                 sidelen = 16,
2194                 noise_params = {
2195                         offset = 0.01,
2196                         scale = 0.01,
2197                         spread = {x = 250, y = 250, z = 250},
2198                         seed = 333,
2199                         octaves = 2,
2200                         persist = 0.66,
2201                 },
2202                 biomes = { "jungle", "jungle_edge", "taiga", "cold_taiga", "mega_taiga", "mega_spruce_taiga" },
2203                 y_min = 1,
2204                 y_max = mcl_vars.mg_overworld_max,
2205         })
2206
2207         -- Large flowers
2208         local register_large_flower = function(name, biomes, seed, offset, flower_forest_offset)
2209                 local maxi
2210                 if flower_forest_offset then
2211                         maxi = 2
2212                 else
2213                         maxi = 1
2214                 end
2215                 for i=1, maxi do
2216                         local o, b -- offset, biomes
2217                         if i == 1 then
2218                                 o = offset
2219                                 b = biomes
2220                         else
2221                                 o = flower_forest_offset
2222                                 b = { "flower_forest" }
2223                         end
2224
2225                         minetest.register_decoration({
2226                                 deco_type = "schematic",
2227                                 schematic = {
2228                                         size = { x=1, y=3, z=1 },
2229                                         data = {
2230                                                 { name = "air", prob = 0 },
2231                                                 { name = "mcl_flowers:"..name, param1=255, },
2232                                                 { name = "mcl_flowers:"..name.."_top", param1=255, },
2233                                         },
2234                                 },
2235                                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
2236
2237                                 sidelen = 16,
2238                                 noise_params = {
2239                                         offset = o,
2240                                         scale = 0.01,
2241                                         spread = {x = 300, y = 300, z = 300},
2242                                         seed = seed,
2243                                         octaves = 5,
2244                                         persist = 0.62,
2245                                 },
2246                                 y_min = 1,
2247                                 y_max = mcl_vars.mg_overworld_max,
2248                                 flags = "",
2249                                 biomes = b,
2250                         })
2251                 end
2252         end
2253
2254         register_large_flower("rose_bush", {"forest"}, 9350, -0.008, 0.003)
2255         register_large_flower("peony", {"forest"}, 10450, -0.008, 0.003)
2256         register_large_flower("lilac", {"forest"}, 10600, -0.007, 0.003)
2257         -- TODO
2258         register_large_flower("sunflower", {"plains", "sunflower_plains"}, 2940, 0.0)
2259
2260         -- Jungle bush
2261         minetest.register_decoration({
2262                 deco_type = "schematic",
2263                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
2264                 sidelen = 80,
2265                 noise_params = {
2266                         offset = 0.0196,
2267                         scale = 0.025,
2268                         spread = {x = 250, y = 250, z = 250},
2269                         seed = 2930,
2270                         octaves = 4,
2271                         persist = 0.6,
2272                 },
2273                 biomes = {"jungle"},
2274                 y_min = 3,
2275                 y_max = mcl_vars.mg_overworld_max,
2276                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_jungle_bush.mts",
2277                 flags = "place_center_x, place_center_z",
2278         })
2279         minetest.register_decoration({
2280                 deco_type = "schematic",
2281                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
2282                 sidelen = 80,
2283                 noise_params = {
2284                         offset = 0.0085,
2285                         scale = 0.025,
2286                         spread = {x = 250, y = 250, z = 250},
2287                         seed = 2930,
2288                         octaves = 4,
2289                         persist = 0.6,
2290                 },
2291                 biomes = {"jungle_edge"},
2292                 y_min = 3,
2293                 y_max = mcl_vars.mg_overworld_max,
2294                 schematic = minetest.get_modpath("mcl_core").."/schematics/mcl_core_jungle_bush.mts",
2295                 flags = "place_center_x, place_center_z",
2296         })
2297
2298         -- Fallen logs
2299         minetest.register_decoration({
2300                 deco_type = "schematic",
2301                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:podzol", "mcl_core:coarse_dirt"},
2302                 sidelen = 80,
2303                 noise_params = {
2304                         offset = 0.00018,
2305                         scale = 0.00011,
2306                         spread = {x = 250, y = 250, z = 250},
2307                         seed = 2,
2308                         octaves = 3,
2309                         persist = 0.66
2310                 },
2311                 biomes = {"mega_taiga", "mega_spruce_taiga", "taiga"},
2312                 y_min = 1,
2313                 y_max = mcl_vars.mg_overworld_max,
2314                 schematic = {
2315                         size = {x = 4, y = 3, z = 1},
2316                         data = {
2317                                 {name = "air", prob = 0},
2318                                 {name = "air", prob = 0},
2319                                 {name = "air", prob = 0},
2320                                 {name = "air", prob = 0},
2321                                 {name = "mcl_core:sprucetree", param2 = 12, prob = 127},
2322                                 {name = "mcl_core:sprucetree", param2 = 12},
2323                                 {name = "mcl_core:sprucetree", param2 = 12},
2324                                 {name = "mcl_core:sprucetree", param2 = 12, prob = 127},
2325                                 {name = "air", prob = 0},
2326                                 {name = "mcl_mushrooms:mushroom_brown", prob = 160},
2327                                 {name = "mcl_mushrooms:mushroom_red", prob = 160},
2328                                 {name = "air", prob = 0},
2329                         },
2330                 },
2331                 flags = "place_center_x",
2332                 rotation = "random",
2333         })
2334
2335         minetest.register_decoration({
2336                 deco_type = "schematic",
2337                 place_on = {"mcl_core:dirt_with_grass_snow", "mcl_core:dirt_with_grass", "mcl_core:podzol", "mcl_core:podzol_snow", "mcl_core:coarse_dirt"},
2338                 sidelen = 80,
2339                 noise_params = {
2340                         offset = 0.00018,
2341                         scale = 0.00011,
2342                         spread = {x = 250, y = 250, z = 250},
2343                         seed = 2,
2344                         octaves = 3,
2345                         persist = 0.66
2346                 },
2347                 biomes = {"cold_taiga"},
2348                 y_min = 1,
2349                 y_max = mcl_vars.mg_overworld_max,
2350                 schematic = {
2351                         size = {x = 4, y = 3, z = 1},
2352                         data = {
2353                                 {name = "air", prob = 0},
2354                                 {name = "air", prob = 0},
2355                                 {name = "air", prob = 0},
2356                                 {name = "air", prob = 0},
2357                                 {name = "mcl_core:sprucetree", param2 = 12, prob = 127},
2358                                 {name = "mcl_core:sprucetree", param2 = 12},
2359                                 {name = "mcl_core:sprucetree", param2 = 12},
2360                                 {name = "mcl_core:sprucetree", param2 = 12, prob = 127},
2361                                 {name = "air", prob = 0},
2362                                 {name = "air", prob = 0},
2363                                 {name = "air", prob = 0},
2364                                 {name = "air", prob = 0},
2365                         },
2366                 },
2367                 flags = "place_center_x",
2368                 rotation = "random",
2369         })
2370
2371         minetest.register_decoration({
2372                 deco_type = "schematic",
2373                 place_on = {"mcl_core:dirt_with_grass"},
2374                 sidelen = 16,
2375                 noise_params = {
2376                         offset = 0.0,
2377                         scale = -0.00008,
2378                         spread = {x = 250, y = 250, z = 250},
2379                         seed = 2,
2380                         octaves = 3,
2381                         persist = 0.66
2382                 },
2383                 biomes = {"forest", "birch_forest", "birch_forest_m",},
2384                 y_min = 1,
2385                 y_max = mcl_vars.mg_overworld_max,
2386                 schematic = {
2387                         size = {x = 3, y = 3, z = 1},
2388                         data = {
2389                                 {name = "air", prob = 0},
2390                                 {name = "air", prob = 0},
2391                                 {name = "air", prob = 0},
2392                                 {name = "mcl_core:birchtree", param2 = 12},
2393                                 {name = "mcl_core:birchtree", param2 = 12},
2394                                 {name = "mcl_core:birchtree", param2 = 12, prob = 127},
2395                                 {name = "mcl_mushrooms:mushroom_red", prob = 100},
2396                                 {name = "mcl_mushrooms:mushroom_brown", prob = 10},
2397                                 {name = "air", prob = 0},
2398                         },
2399                 },
2400                 flags = "place_center_x",
2401                 rotation = "random",
2402         })
2403
2404         minetest.register_decoration({
2405                 deco_type = "schematic",
2406                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
2407                 sidelen = 80,
2408                 fill_ratio = 0.005,
2409                 biomes = {"jungle"},
2410                 y_min = 1,
2411                 y_max = mcl_vars.mg_overworld_max,
2412                 schematic = {
2413                         size = {x = 4, y = 3, z = 1},
2414                         data = {
2415                                 {name = "air", prob = 0},
2416                                 {name = "air", prob = 0},
2417                                 {name = "air", prob = 0},
2418                                 {name = "air", prob = 0},
2419                                 {name = "mcl_core:jungletree", param2 = 12, prob = 127},
2420                                 {name = "mcl_core:jungletree", param2 = 12},
2421                                 {name = "mcl_core:jungletree", param2 = 12},
2422                                 {name = "mcl_core:jungletree", param2 = 12, prob = 127},
2423                                 {name = "air", prob = 0},
2424                                 {name = "mcl_mushrooms:mushroom_brown", prob = 50},
2425                                 {name = "air", prob = 0},
2426                                 {name = "air", prob = 0},
2427                         },
2428                 },
2429                 flags = "place_center_x",
2430                 rotation = "random",
2431         })
2432
2433         minetest.register_decoration({
2434                 deco_type = "schematic",
2435                 place_on = {"mcl_core:dirt_with_grass"},
2436                 sidelen = 16,
2437                 noise_params = {
2438                         offset = 0.00018,
2439                         scale = 0.00011,
2440                         spread = {x = 250, y = 250, z = 250},
2441                         seed = 2,
2442                         octaves = 3,
2443                         persist = 0.66
2444                 },
2445                 biomes = {"forest"},
2446                 y_min = 1,
2447                 y_max = mcl_vars.mg_overworld_max,
2448                 schematic = {
2449                         size = {x = 3, y = 3, z = 1},
2450                         data = {
2451                                 {name = "air", prob = 0},
2452                                 {name = "air", prob = 0},
2453                                 {name = "air", prob = 0},
2454                                 {name = "mcl_core:tree", param2 = 12, prob = 127},
2455                                 {name = "mcl_core:tree", param2 = 12},
2456                                 {name = "mcl_core:tree", param2 = 12},
2457                                 {name = "air", prob = 0},
2458                                 {name = "mcl_mushrooms:mushroom_brown", prob = 96},
2459                                 {name = "mcl_mushrooms:mushroom_red", prob = 96},
2460                         },
2461                 },
2462                 flags = "place_center_x",
2463                 rotation = "random",
2464         })
2465
2466         -- Lily pad
2467
2468         local lily_schem = {
2469                 { name = "mcl_core:water_source" },
2470                 { name = "mcl_flowers:waterlily" },
2471         }
2472
2473         -- Spawn them in shallow water at ocean level in swamplands.
2474         -- Tweak lilydepth to change the maximum water depth
2475         local lilydepth = 2
2476
2477         for d=1, lilydepth do
2478                 local height = d + 2
2479                 local y = 1 - d
2480                 table.insert(lily_schem, 1, { name = "air", prob = 0 })
2481
2482                 minetest.register_decoration({
2483                         deco_type = "schematic",
2484                         schematic = {
2485                                 size = { x=1, y=height, z=1 },
2486                                 data = lily_schem,
2487                         },
2488                         place_on = "mcl_core:dirt",
2489                         sidelen = 16,
2490                         noise_params = {
2491                                 offset = 0,
2492                                 scale = 0.3,
2493                                 spread = {x = 100, y = 100, z = 100},
2494                                 seed = 503,
2495                                 octaves = 6,
2496                                 persist = 0.7,
2497                         },
2498                         y_min = y,
2499                         y_max = y,
2500                         biomes = { "swampland_shore" },
2501                         rotation = "random",
2502                 })
2503         end
2504
2505         -- Melon
2506         minetest.register_decoration({
2507                 deco_type = "simple",
2508                 place_on = {"mcl_core:dirt_with_grass"},
2509                 sidelen = 16,
2510                 noise_params = {
2511                         offset = -0.01,
2512                         scale = 0.006,
2513                         spread = {x = 250, y = 250, z = 250},
2514                         seed = 333,
2515                         octaves = 3,
2516                         persist = 0.6
2517                 },
2518                 y_min = 1,
2519                 y_max = mcl_vars.mg_overworld_max,
2520                 decoration = "mcl_farming:melon",
2521                 biomes = { "jungle" },
2522         })
2523         minetest.register_decoration({
2524                 deco_type = "simple",
2525                 place_on = {"mcl_core:dirt_with_grass"},
2526                 sidelen = 16,
2527                 noise_params = {
2528                         offset = -0.005,
2529                         scale = 0.006,
2530                         spread = {x = 250, y = 250, z = 250},
2531                         seed = 333,
2532                         octaves = 3,
2533                         persist = 0.6
2534                 },
2535                 y_min = 1,
2536                 y_max = mcl_vars.mg_overworld_max,
2537                 decoration = "mcl_farming:melon",
2538                 biomes = { "jungle_edge" },
2539         })
2540
2541         -- Pumpkin
2542         minetest.register_decoration({
2543                 deco_type = "schematic",
2544                 schematic = {
2545                         size = { x=1, y=2, z=1 },
2546                         data = {
2547                                 { name = "air", prob = 0 },
2548                                 { name = "mcl_farming:pumpkin_face", param1=255, },
2549                         },
2550                 },
2551                 place_on = {"mcl_core:dirt_with_grass"},
2552                 sidelen = 16,
2553                 noise_params = {
2554                         offset = -0.016,
2555                         scale = 0.01332,
2556                         spread = {x = 125, y = 125, z = 125},
2557                         seed = 666,
2558                         octaves = 6,
2559                         persist = 0.666
2560                 },
2561                 biomes = {"plains"},
2562                 y_min = 3,
2563                 y_max = 29,
2564                 rotation = "random",
2565         })
2566
2567         -- Grasses and ferns
2568         local grass_forest = {"plains", "taiga", "forest", "flower_forest", "birch_forest", "birch_forest_m", "roofed_forest", "swampland", "mesa_plateau_f_grasstop" }
2569         local grass_plains = {"plains", "savanna", "sunflower_plains", "jungle_edge" }
2570         local grass_savanna = {"savanna"}
2571         local grass_sparse = {"extreme_hills", "extreme_hills_plus", "extreme_hills_plus_snowtop", "extreme_hills_m" }
2572
2573         register_grass_decoration("tallgrass", -0.03,  0.09, grass_forest)
2574         register_grass_decoration("tallgrass", -0.015, 0.075, grass_forest)
2575         register_grass_decoration("tallgrass", 0,      0.06, grass_forest)
2576         register_grass_decoration("tallgrass", 0.015,  0.045, grass_forest)
2577         register_grass_decoration("tallgrass", 0.03,   0.03, grass_forest)
2578         register_grass_decoration("tallgrass", 0.01, 0.05, grass_forest)
2579         register_grass_decoration("tallgrass", 0.03, 0.03, grass_plains)
2580         register_grass_decoration("tallgrass", 0.05, 0.01, grass_plains)
2581         register_grass_decoration("tallgrass", 0.07, -0.01, grass_plains)
2582         register_grass_decoration("tallgrass", 0.09, -0.03, grass_plains)
2583         register_grass_decoration("tallgrass", 0.18, -0.03, grass_savanna)
2584         register_grass_decoration("tallgrass", 0.05, -0.03, grass_sparse)
2585
2586         local fern_minimal = { "jungle", "jungle_edge", "taiga", "mega_taiga", "mega_spruce_taiga", "cold_taiga" }
2587         local fern_low = { "jungle", "jungle_edge", "taiga", "mega_taiga", "mega_spruce_taiga" }
2588         local fern_jungle = { "jungle", "jungle_edge" }
2589         register_grass_decoration("fern", -0.03,  0.09, fern_minimal)
2590         register_grass_decoration("fern", -0.015, 0.075, fern_minimal)
2591         register_grass_decoration("fern", 0,      0.06, fern_minimal)
2592         register_grass_decoration("fern", 0.015,  0.045, fern_low)
2593         register_grass_decoration("fern", 0.03,   0.03, fern_low)
2594         register_grass_decoration("fern", 0.01, 0.05, fern_jungle)
2595         register_grass_decoration("fern", 0.03, 0.03, fern_jungle)
2596         register_grass_decoration("fern", 0.05, 0.01, fern_jungle)
2597         register_grass_decoration("fern", 0.07, -0.01, fern_jungle)
2598         register_grass_decoration("fern", 0.09, -0.03, fern_jungle)
2599
2600         -- Place tall grass on snow in Ice Plains and Extreme Hills+
2601         minetest.register_decoration({
2602                 deco_type = "schematic",
2603                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt_with_grass_snow"},
2604                 sidelen = 16,
2605                 noise_params = {
2606                         offset = -0.08,
2607                         scale = 0.09,
2608                         spread = {x = 15, y = 15, z = 15},
2609                         seed = 420,
2610                         octaves = 3,
2611                         persist = 0.6,
2612                 },
2613                 biomes = {"ice_plains"},
2614                 y_min = 1,
2615                 y_max = mcl_vars.mg_overworld_max,
2616                 schematic = {
2617                         size = { x=1, y=2, z=1 },
2618                         data = {
2619                                 { name = "mcl_core:dirt_with_grass", force_place=true, },
2620                                 { name = "mcl_flowers:tallgrass", },
2621                         },
2622                 },
2623         })
2624         minetest.register_decoration({
2625                 deco_type = "schematic",
2626                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt_with_grass_snow"},
2627                 sidelen = 16,
2628                 noise_params = {
2629                         offset = 0.0,
2630                         scale = 0.09,
2631                         spread = {x = 15, y = 15, z = 15},
2632                         seed = 420,
2633                         octaves = 3,
2634                         persist = 0.6,
2635                 },
2636                 biomes = {"extreme_hills_plus_snowtop"},
2637                 y_min = 1,
2638                 y_max = mcl_vars.mg_overworld_max,
2639                 schematic = {
2640                         size = { x=1, y=2, z=1 },
2641                         data = {
2642                                 { name = "mcl_core:dirt_with_grass", force_place=true, },
2643                                 { name = "mcl_flowers:tallgrass", },
2644                         },
2645                 },
2646         })
2647
2648
2649         -- Dead bushes
2650         minetest.register_decoration({
2651                 deco_type = "simple",
2652                 place_on = {"group:sand", "mcl_core:podzol", "mcl_core:podzol_snow", "mcl_core:dirt", "mcl_core:coarse_dirt", "group:hardened_clay"},
2653                 sidelen = 16,
2654                 noise_params = {
2655                         offset = 0,
2656                         scale = 0.035,
2657                         spread = {x = 100, y = 100, z = 100},
2658                         seed = 1972,
2659                         octaves = 3,
2660                         persist = 0.6
2661                 },
2662                 y_min = 4,
2663                 y_max = mcl_vars.mg_overworld_max,
2664                 biomes = {"red_desert", "desert", "mesa", "mesa_sandlevel", "mesa_plateau_f", "mesa_plateau_f_sandlevel", "taiga", "mega_taiga"},
2665                 decoration = "mcl_core:deadbush",
2666                 height = 1,
2667         })
2668
2669         -- Mushrooms in mushroom biome
2670         minetest.register_decoration({
2671                 deco_type = "simple",
2672                 place_on = {"mcl_core:mycelium"},
2673                 sidelen = 80,
2674                 fill_ratio = 0.009,
2675                 biomes = {"mushroom_island", "mushroom_island_shore"},
2676                 noise_threshold = 2.0,
2677                 y_min = mcl_vars.mg_overworld_min,
2678                 y_max = mcl_vars.mg_overworld_max,
2679                 decoration = "mcl_mushrooms:mushroom_red",
2680         })
2681         minetest.register_decoration({
2682                 deco_type = "simple",
2683                 place_on = {"mcl_core:mycelium"},
2684                 sidelen = 80,
2685                 fill_ratio = 0.009,
2686                 biomes = {"mushroom_island", "mushroom_island_shore"},
2687                 y_min = mcl_vars.mg_overworld_min,
2688                 y_max = mcl_vars.mg_overworld_max,
2689                 decoration = "mcl_mushrooms:mushroom_brown",
2690         })
2691
2692         -- Mushrooms in taigas
2693         minetest.register_decoration({
2694                 deco_type = "simple",
2695                 place_on = {"mcl_core:podzol"},
2696                 sidelen = 80,
2697                 fill_ratio = 0.003,
2698                 biomes = {"taiga", "mega_taiga", "mega_spruce_taiga"},
2699                 y_min = mcl_vars.mg_overworld_min,
2700                 y_max = mcl_vars.mg_overworld_max,
2701                 decoration = "mcl_mushrooms:mushroom_red",
2702         })
2703         minetest.register_decoration({
2704                 deco_type = "simple",
2705                 place_on = {"mcl_core:podzol"},
2706                 sidelen = 80,
2707                 fill_ratio = 0.003,
2708                 biomes = {"taiga", "mega_taiga", "mega_spruce_taiga"},
2709                 y_min = mcl_vars.mg_overworld_min,
2710                 y_max = mcl_vars.mg_overworld_max,
2711                 decoration = "mcl_mushrooms:mushroom_brown",
2712         })
2713
2714
2715         -- Mushrooms next to trees
2716         local mushrooms = {"mcl_mushrooms:mushroom_red", "mcl_mushrooms:mushroom_brown"}
2717         local mseeds = { 7133, 8244 }
2718         for m=1, #mushrooms do
2719                 -- Mushrooms next to trees
2720                 minetest.register_decoration({
2721                         deco_type = "simple",
2722                         place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:podzol", "mcl_core:mycelium", "mcl_core:stone", "mcl_core:andesite", "mcl_core:diorite", "mcl_core:granite"},
2723                         sidelen = 16,
2724                         noise_params = {
2725                                 offset = 0,
2726                                 scale = 0.003,
2727                                 spread = {x = 250, y = 250, z = 250},
2728                                 seed = mseeds[m],
2729                                 octaves = 3,
2730                                 persist = 0.66,
2731                         },
2732                         y_min = 1,
2733                         y_max = mcl_vars.mg_overworld_max,
2734                         decoration = mushrooms[m],
2735                         spawn_by = { "mcl_core:tree", "mcl_core:sprucetree", "mcl_core:darktree", "mcl_core:birchtree" },
2736                         num_spawn_by = 1,
2737                 })
2738
2739                 -- More mushrooms in swamplands
2740                 minetest.register_decoration({
2741                         deco_type = "simple",
2742                         place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt", "mcl_core:podzol", "mcl_core:mycelium", "mcl_core:stone", "mcl_core:andesite", "mcl_core:diorite", "mcl_core:granite"},
2743                         sidelen = 16,
2744                         noise_params = {
2745                                 offset = 0.05,
2746                                 scale = 0.003,
2747                                 spread = {x = 250, y = 250, z = 250},
2748                                 seed = mseeds[m],
2749                                 octaves = 3,
2750                                 persist = 0.6,
2751                         },
2752                         y_min = 1,
2753                         y_max = mcl_vars.mg_overworld_max,
2754                         decoration = mushrooms[m],
2755                         biomes = { "swampland "},
2756                         spawn_by = { "mcl_core:tree", "mcl_core:sprucetree", "mcl_core:darktree", "mcl_core:birchtree" },
2757                         num_spawn_by = 1,
2758                 })
2759         end
2760         local function register_flower(name, biomes, seed, is_in_flower_forest)
2761                 if is_in_flower_forest == nil then
2762                         is_in_flower_forest = true
2763                 end
2764                 if biomes then
2765                         minetest.register_decoration({
2766                                 deco_type = "simple",
2767                                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
2768                                 sidelen = 16,
2769                                 noise_params = {
2770                                         offset = 0.0008,
2771                                         scale = 0.006,
2772                                         spread = {x = 100, y = 100, z = 100},
2773                                         seed = seed,
2774                                         octaves = 3,
2775                                         persist = 0.6
2776                                 },
2777                                 y_min = 1,
2778                                 y_max = mcl_vars.mg_overworld_max,
2779                                 biomes = biomes,
2780                                 decoration = "mcl_flowers:"..name,
2781                         })
2782                 end
2783                 if is_in_flower_forest then
2784                         minetest.register_decoration({
2785                                 deco_type = "simple",
2786                                 place_on = {"mcl_core:dirt_with_grass", "mcl_core:dirt"},
2787                                 sidelen = 80,
2788                                 noise_params= {
2789                                         offset = 0.0008*40,
2790                                         scale = 0.003,
2791                                         spread = {x = 100, y = 100, z = 100},
2792                                         seed = seed,
2793                                         octaves = 3,
2794                                         persist = 0.6,
2795                                 },
2796                                 y_min = 1,
2797                                 y_max = mcl_vars.mg_overworld_max,
2798                                 biomes = {"flower_forest"},
2799                                 decoration = "mcl_flowers:"..name,
2800                         })
2801                 end
2802         end
2803
2804         local flower_biomes1 = {"plains", "sunflower_plains", "roofed_forest", "forest", "birch_forest", "birch_forest_m", "taiga", "cold_taiga", "jungle", "jungle_edge", "savanna", "extreme_hills", "extreme_hills_m", "extreme_hills_plus", "extreme_hills_plus_snowtop", "mesa_plateau_f_grasstop" }
2805
2806         register_flower("dandelion", flower_biomes1, 8)
2807         register_flower("poppy", flower_biomes1, 9439)
2808
2809         local flower_biomes2 = {"plains", "sunflower_plains"}
2810         register_flower("tulip_red", flower_biomes2, 436)
2811         register_flower("tulip_orange", flower_biomes2, 536)
2812         register_flower("tulip_pink", flower_biomes2, 636)
2813         register_flower("tulip_white", flower_biomes2, 736)
2814         register_flower("azure_bluet", flower_biomes2, 800)
2815         register_flower("oxeye_daisy", flower_biomes2, 3490)
2816
2817         register_flower("allium", nil, 0) -- flower forest only
2818         register_flower("blue_orchid", {"swampland"}, 64500, false)
2819
2820 end
2821
2822 -- Decorations in non-Overworld dimensions
2823 local function register_dimension_decorations()
2824         -- TODO
2825 end
2826
2827 --
2828 -- Detect mapgen to select functions
2829 --
2830 if mg_name ~= "singlenode" then
2831         minetest.clear_registered_biomes()
2832         minetest.clear_registered_decorations()
2833         minetest.clear_registered_schematics()
2834         if mg_name ~= "v6" and mg_name ~= "flat" then
2835                 register_biomes()
2836                 register_biomelike_ores()
2837                 register_decorations()
2838         elseif mg_name == "flat" then
2839                 -- Implementation of Minecraft's Superflat mapgen, classic style
2840                 minetest.clear_registered_biomes()
2841                 minetest.clear_registered_decorations()
2842                 minetest.clear_registered_schematics()
2843                 register_classic_superflat_biome()
2844         end
2845
2846         -- Non-overworld stuff is registered independently
2847         register_dimension_biomes()
2848         register_dimension_ores()
2849         register_dimension_decorations()
2850
2851         -- Overworld decorations for v6 are handled in mcl_mapgen_core
2852 end
2853