trackplane.blend « blender « assets - advtrains.git - Advtrains mod for minetest.

about summary refs log tree commit diff

path: root/assets/blender/trackplane.blend

blob: 79365f7e8d7acece0899e6ceb7e5a895a4ef73d4 (plain)

blob size (451KB) exceeds display size limit (100KB).

'#n30'>30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 54 /* Add {Loading,Active}BlockModifiers to environment */ // Get core.registered_abms lua_getglobal(L, "core"); lua_getfield(L, -1, "registered_abms"); int registered_abms = lua_gettop(L); if (!lua_istable(L, registered_abms)) { lua_pop(L, 1</* Minetest Copyright (C) 2017-2019 vlapsley, Vaughan Lapsley <vlapsley@gmail.com> Copyright (C) 2017-2019 paramat This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #include <cmath> #include "mapgen.h" #include "voxel.h" #include "noise.h" #include "mapblock.h" #include "mapnode.h" #include "map.h" #include "content_sao.h" #include "nodedef.h" #include "voxelalgorithms.h" //#include "profiler.h" // For TimeTaker #include "settings.h" // For g_settings #include "emerge.h" #include "dungeongen.h" #include "cavegen.h" #include "mg_biome.h" #include "mg_ore.h" #include "mg_decoration.h" #include "mapgen_carpathian.h" FlagDesc flagdesc_mapgen_carpathian[] = { {"caverns", MGCARPATHIAN_CAVERNS}, {"rivers", MGCARPATHIAN_RIVERS}, {NULL, 0} }; /////////////////////////////////////////////////////////////////////////////// MapgenCarpathian::MapgenCarpathian(MapgenCarpathianParams *params, EmergeManager *emerge) : MapgenBasic(MAPGEN_CARPATHIAN, params, emerge) { base_level = params->base_level; river_width = params->river_width; river_depth = params->river_depth; valley_width = params->valley_width; spflags = params->spflags; cave_width = params->cave_width; large_cave_depth = params->large_cave_depth; small_cave_num_min = params->small_cave_num_min; small_cave_num_max = params->small_cave_num_max; large_cave_num_min = params->large_cave_num_min; large_cave_num_max = params->large_cave_num_max; large_cave_flooded = params->large_cave_flooded; cavern_limit = params->cavern_limit; cavern_taper = params->cavern_taper; cavern_threshold = params->cavern_threshold; dungeon_ymin = params->dungeon_ymin; dungeon_ymax = params->dungeon_ymax; grad_wl = 1 - water_level; //// 2D Terrain noise noise_filler_depth = new Noise(&params->np_filler_depth, seed, csize.X, csize.Z); noise_height1 = new Noise(&params->np_height1, seed, csize.X, csize.Z); noise_height2 = new Noise(&params->np_height2, seed, csize.X, csize.Z); noise_height3 = new Noise(&params->np_height3, seed, csize.X, csize.Z); noise_height4 = new Noise(&params->np_height4, seed, csize.X, csize.Z); noise_hills_terrain = new Noise(&params->np_hills_terrain, seed, csize.X, csize.Z); noise_ridge_terrain = new Noise(&params->np_ridge_terrain, seed, csize.X, csize.Z); noise_step_terrain = new Noise(&params->np_step_terrain, seed, csize.X, csize.Z); noise_hills = new Noise(&params->np_hills, seed, csize.X, csize.Z); noise_ridge_mnt = new Noise(&params->np_ridge_mnt, seed, csize.X, csize.Z); noise_step_mnt = new Noise(&params->np_step_mnt, seed, csize.X, csize.Z); if (spflags & MGCARPATHIAN_RIVERS) noise_rivers = new Noise(&params->np_rivers, seed, csize.X, csize.Z); //// 3D terrain noise // 1 up 1 down overgeneration noise_mnt_var = new Noise(&params->np_mnt_var, seed, csize.X, csize.Y + 2, csize.Z); //// Cave noise MapgenBasic::np_cave1 = params->np_cave1; MapgenBasic::np_cave2 = params->np_cave2; MapgenBasic::np_cavern = params->np_cavern; MapgenBasic::np_dungeons = params->np_dungeons; } MapgenCarpathian::~MapgenCarpathian() { delete noise_filler_depth; delete noise_height1; delete noise_height2; delete noise_height3; delete noise_height4; delete noise_hills_terrain; delete noise_ridge_terrain; delete noise_step_terrain; delete noise_hills; delete noise_ridge_mnt; delete noise_step_mnt; if (spflags & MGCARPATHIAN_RIVERS) delete noise_rivers; delete noise_mnt_var; } MapgenCarpathianParams::MapgenCarpathianParams(): np_filler_depth (0, 1, v3f(128, 128, 128), 261, 3, 0.7, 2.0), np_height1 (0, 5, v3f(251, 251, 251), 9613, 5, 0.5, 2.0), np_height2 (0, 5, v3f(383, 383, 383), 1949, 5, 0.5, 2.0), np_height3 (0, 5, v3f(509, 509, 509), 3211, 5, 0.5, 2.0), np_height4 (0, 5, v3f(631, 631, 631), 1583, 5, 0.5, 2.0), np_hills_terrain (1, 1, v3f(1301, 1301, 1301), 1692, 5, 0.5, 2.0), np_ridge_terrain (1, 1, v3f(1889, 1889, 1889), 3568, 5, 0.5, 2.0), np_step_terrain (1, 1, v3f(1889, 1889, 1889), 4157, 5, 0.5, 2.0), np_hills (0, 3, v3f(257, 257, 257), 6604, 6, 0.5, 2.0), np_ridge_mnt (0, 12, v3f(743, 743, 743), 5520, 6, 0.7, 2.0), np_step_mnt (0, 8, v3f(509, 509, 509), 2590, 6, 0.6, 2.0), np_rivers (0, 1, v3f(1000, 1000, 1000), 85039, 5, 0.6, 2.0), np_mnt_var (0, 1, v3f(499, 499, 499), 2490, 5, 0.55, 2.0), np_cave1 (0, 12, v3f(61, 61, 61), 52534, 3, 0.5, 2.0), np_cave2 (0, 12, v3f(67, 67, 67), 10325, 3, 0.5, 2.0), np_cavern (0, 1, v3f(384, 128, 384), 723, 5, 0.63, 2.0), np_dungeons (0.9, 0.5, v3f(500, 500, 500), 0, 2, 0.8, 2.0) { } void MapgenCarpathianParams::readParams(const Settings *settings) { settings->getFlagStrNoEx("mgcarpathian_spflags", spflags, flagdesc_mapgen_carpathian); settings->getFloatNoEx("mgcarpathian_base_level", base_level); settings->getFloatNoEx("mgcarpathian_river_width", river_width); settings->getFloatNoEx("mgcarpathian_river_depth", river_depth); settings->getFloatNoEx("mgcarpathian_valley_width", valley_width); settings->getFloatNoEx("mgcarpathian_cave_width", cave_width); settings->getS16NoEx("mgcarpathian_large_cave_depth", large_cave_depth); settings->getU16NoEx("mgcarpathian_small_cave_num_min", small_cave_num_min); settings->getU16NoEx("mgcarpathian_small_cave_num_max", small_cave_num_max); settings->getU16NoEx("mgcarpathian_large_cave_num_min", large_cave_num_min); settings->getU16NoEx("mgcarpathian_large_cave_num_max", large_cave_num_max); settings->getFloatNoEx("mgcarpathian_large_cave_flooded", large_cave_flooded); settings->getS16NoEx("mgcarpathian_cavern_limit", cavern_limit); settings->getS16NoEx("mgcarpathian_cavern_taper", cavern_taper); settings->getFloatNoEx("mgcarpathian_cavern_threshold", cavern_threshold); settings->getS16NoEx("mgcarpathian_dungeon_ymin", dungeon_ymin); settings->getS16NoEx("mgcarpathian_dungeon_ymax", dungeon_ymax); settings->getNoiseParams("mgcarpathian_np_filler_depth", np_filler_depth); settings->getNoiseParams("mgcarpathian_np_height1", np_height1); settings->getNoiseParams("mgcarpathian_np_height2", np_height2); settings->getNoiseParams("mgcarpathian_np_height3", np_height3); settings->getNoiseParams("mgcarpathian_np_height4", np_height4); settings->getNoiseParams("mgcarpathian_np_hills_terrain", np_hills_terrain); settings->getNoiseParams("mgcarpathian_np_ridge_terrain", np_ridge_terrain); settings->getNoiseParams("mgcarpathian_np_step_terrain", np_step_terrain); settings->getNoiseParams("mgcarpathian_np_hills", np_hills); settings->getNoiseParams("mgcarpathian_np_ridge_mnt", np_ridge_mnt); settings->getNoiseParams("mgcarpathian_np_step_mnt", np_step_mnt); settings->getNoiseParams("mgcarpathian_np_rivers", np_rivers); settings->getNoiseParams("mgcarpathian_np_mnt_var", np_mnt_var); settings->getNoiseParams("mgcarpathian_np_cave1", np_cave1); settings->getNoiseParams("mgcarpathian_np_cave2", np_cave2); settings->getNoiseParams("mgcarpathian_np_cavern", np_cavern); settings->getNoiseParams("mgcarpathian_np_dungeons", np_dungeons); } void MapgenCarpathianParams::writeParams(Settings *settings) const { settings->setFlagStr("mgcarpathian_spflags", spflags, flagdesc_mapgen_carpathian, U32_MAX); settings->setFloat("mgcarpathian_base_level", base_level); settings->setFloat("mgcarpathian_river_width", river_width); settings->setFloat("mgcarpathian_river_depth", river_depth); settings->setFloat("mgcarpathian_valley_width", valley_width); settings->setFloat("mgcarpathian_cave_width", cave_width); settings->setS16("mgcarpathian_large_cave_depth", large_cave_depth); settings->setU16("mgcarpathian_small_cave_num_min", small_cave_num_min); settings->setU16("mgcarpathian_small_cave_num_max", small_cave_num_max); settings->setU16("mgcarpathian_large_cave_num_min", large_cave_num_min); settings->setU16("mgcarpathian_large_cave_num_max", large_cave_num_max); settings->setFloat("mgcarpathian_large_cave_flooded", large_cave_flooded); settings->setS16("mgcarpathian_cavern_limit", cavern_limit); settings->setS16("mgcarpathian_cavern_taper", cavern_taper); settings->setFloat("mgcarpathian_cavern_threshold", cavern_threshold); settings->setS16("mgcarpathian_dungeon_ymin", dungeon_ymin); settings->setS16("mgcarpathian_dungeon_ymax", dungeon_ymax); settings->setNoiseParams("mgcarpathian_np_filler_depth", np_filler_depth); settings->setNoiseParams("mgcarpathian_np_height1", np_height1); settings->setNoiseParams("mgcarpathian_np_height2", np_height2); settings->setNoiseParams("mgcarpathian_np_height3", np_height3); settings->setNoiseParams("mgcarpathian_np_height4", np_height4); settings->setNoiseParams("mgcarpathian_np_hills_terrain", np_hills_terrain); settings->setNoiseParams("mgcarpathian_np_ridge_terrain", np_ridge_terrain); settings->setNoiseParams("mgcarpathian_np_step_terrain", np_step_terrain); settings->setNoiseParams("mgcarpathian_np_hills", np_hills); settings->setNoiseParams("mgcarpathian_np_ridge_mnt", np_ridge_mnt); settings->setNoiseParams("mgcarpathian_np_step_mnt", np_step_mnt); settings->setNoiseParams("mgcarpathian_np_rivers", np_rivers); settings->setNoiseParams("mgcarpathian_np_mnt_var", np_mnt_var); settings->setNoiseParams("mgcarpathian_np_cave1", np_cave1); settings->setNoiseParams("mgcarpathian_np_cave2", np_cave2); settings->setNoiseParams("mgcarpathian_np_cavern", np_cavern); settings->setNoiseParams("mgcarpathian_np_dungeons", np_dungeons); } //////////////////////////////////////////////////////////////////////////////// // Lerp function inline float MapgenCarpathian::getLerp(float noise1, float noise2, float mod) { return noise1 + mod * (noise2 - noise1); } // Steps function float MapgenCarpathian::getSteps(float noise) { float w = 0.5f; float k = std::floor(noise / w); float f = (noise - k * w) / w; float s = std::fmin(2.f * f, 1.f); return (k + s) * w; } //////////////////////////////////////////////////////////////////////////////// void MapgenCarpathian::makeChunk(BlockMakeData *data) { // Pre-conditions assert(data->vmanip); assert(data->nodedef); assert(data->blockpos_requested.X >= data->blockpos_min.X && data->blockpos_requested.Y >= data->blockpos_min.Y && data->blockpos_requested.Z >= data->blockpos_min.Z); assert(data->blockpos_requested.X <= data->blockpos_max.X && data->blockpos_requested.Y <= data->blockpos_max.Y && data->blockpos_requested.Z <= data->blockpos_max.Z); this->generating = true; this->vm = data->vmanip; this->ndef = data->nodedef; v3s16 blockpos_min = data->blockpos_min; v3s16 blockpos_max = data->blockpos_max; node_min = blockpos_min * MAP_BLOCKSIZE; node_max = (blockpos_max + v3s16(1, 1, 1)) * MAP_BLOCKSIZE - v3s16(1, 1, 1); full_node_min = (blockpos_min - 1) * MAP_BLOCKSIZE; full_node_max = (blockpos_max + 2) * MAP_BLOCKSIZE - v3s16(1, 1, 1); // Create a block-specific seed blockseed = getBlockSeed2(full_node_min, seed); // Generate terrain s16 stone_surface_max_y = generateTerrain(); // Create heightmap updateHeightmap(node_min, node_max); // Init biome generator, place biome-specific nodes, and build biomemap if (flags & MG_BIOMES) { biomegen->calcBiomeNoise(node_min); generateBiomes(); } // Generate tunnels, caverns and large randomwalk caves if (flags & MG_CAVES) { // Generate tunnels first as caverns confuse them generateCavesNoiseIntersection(stone_surface_max_y); // Generate caverns bool near_cavern = false; if (spflags & MGCARPATHIAN_CAVERNS) near_cavern = generateCavernsNoise(stone_surface_max_y); // Generate large randomwalk caves if (near_cavern) // Disable large randomwalk caves in this mapchunk by setting // 'large cave depth' to world base. Avoids excessive liquid in // large caverns and floating blobs of overgenerated liquid. generateCavesRandomWalk(stone_surface_max_y, -MAX_MAP_GENERATION_LIMIT); else generateCavesRandomWalk(stone_surface_max_y, large_cave_depth); } // Generate the registered ores m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max); // Generate dungeons if (flags & MG_DUNGEONS) generateDungeons(stone_surface_max_y); // Generate the registered decorations if (flags & MG_DECORATIONS) m_emerge->decomgr->placeAllDecos(this, blockseed, node_min, node_max); // Sprinkle some dust on top after everything else was generated if (flags & MG_BIOMES) dustTopNodes(); // Update liquids updateLiquid(&data->transforming_liquid, full_node_min, full_node_max); // Calculate lighting if (flags & MG_LIGHT) { calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0), full_node_min, full_node_max); } this->generating = false; } //////////////////////////////////////////////////////////////////////////////// int MapgenCarpathian::getSpawnLevelAtPoint(v2s16 p) { // If rivers are enabled, first check if in a river channel if (spflags & MGCARPATHIAN_RIVERS) { float river = std::fabs(NoisePerlin2D(&noise_rivers->np, p.X, p.Y, seed)) - river_width; if (river < 0.0f) return MAX_MAP_GENERATION_LIMIT; // Unsuitable spawn point } float height1 = NoisePerlin2D(&noise_height1->np, p.X, p.Y, seed); float height2 = NoisePerlin2D(&noise_height2->np, p.X, p.Y, seed); float height3 = NoisePerlin2D(&noise_height3->np, p.X, p.Y, seed); float height4 = NoisePerlin2D(&noise_height4->np, p.X, p.Y, seed); float hterabs = std::fabs(NoisePerlin2D(&noise_hills_terrain->np, p.X, p.Y, seed)); float n_hills = NoisePerlin2D(&noise_hills->np, p.X, p.Y, seed); float hill_mnt = hterabs * hterabs * hterabs * n_hills * n_hills; float rterabs = std::fabs(NoisePerlin2D(&noise_ridge_terrain->np, p.X, p.Y, seed)); float n_ridge_mnt = NoisePerlin2D(&noise_ridge_mnt->np, p.X, p.Y, seed); float ridge_mnt = rterabs * rterabs * rterabs * (1.0f - std::fabs(n_ridge_mnt)); float sterabs = std::fabs(NoisePerlin2D(&noise_step_terrain->np, p.X, p.Y, seed)); float n_step_mnt = NoisePerlin2D(&noise_step_mnt->np, p.X, p.Y, seed); float step_mnt = sterabs * sterabs * sterabs * getSteps(n_step_mnt); float valley = 1.0f; float river = 0.0f; if ((spflags & MGCARPATHIAN_RIVERS) && node_max.Y >= water_level - 16) { river = std::fabs(NoisePerlin2D(&noise_rivers->np, p.X, p.Y, seed)) - river_width; if (river <= valley_width) { // Within river valley if (river < 0.0f) { // River channel valley = river; } else { // Valley slopes. // 0 at river edge, 1 at valley edge. float riversc = river / valley_width; // Smoothstep valley = riversc * riversc * (3.0f - 2.0f * riversc); } } } bool solid_below = false; u8 cons_non_solid = 0; // consecutive non-solid nodes for (s16 y = water_level; y <= water_level + 32; y++) { float mnt_var = NoisePerlin3D(&noise_mnt_var->np, p.X, y, p.Y, seed); float hill1 = getLerp(height1, height2, mnt_var); float hill2 = getLerp(height3, height4, mnt_var); float hill3 = getLerp(height3, height2, mnt_var); float hill4 = getLerp(height1, height4, mnt_var); float hilliness = std::fmax(std::fmin(hill1, hill2), std::fmin(hill3, hill4)); float hills = hill_mnt * hilliness; float ridged_mountains = ridge_mnt * hilliness; float step_mountains = step_mnt * hilliness; s32 grad = 1 - y; float mountains = hills + ridged_mountains + step_mountains; float surface_level = base_level + mountains + grad; if ((spflags & MGCARPATHIAN_RIVERS) && river <= valley_width) { if (valley < 0.0f) { // River channel surface_level = std::fmin(surface_level, water_level - std::sqrt(-valley) * river_depth); } else if (surface_level > water_level) { // Valley slopes surface_level = water_level + (surface_level - water_level) * valley; } } if (y < surface_level) { //TODO '<=' fix from generateTerrain() // solid node solid_below = true; cons_non_solid = 0; } else { // non-solid node cons_non_solid++; if (cons_non_solid == 3 && solid_below) return y - 1; } } return MAX_MAP_GENERATION_LIMIT; // No suitable spawn point found } //////////////////////////////////////////////////////////////////////////////// int MapgenCarpathian::generateTerrain() { MapNode mn_air(CONTENT_AIR); MapNode mn_stone(c_stone); MapNode mn_water(c_water_source); // Calculate noise for terrain generation noise_height1->perlinMap2D(node_min.X, node_min.Z); noise_height2->perlinMap2D(node_min.X, node_min.Z); noise_height3->perlinMap2D(node_min.X, node_min.Z); noise_height4->perlinMap2D(node_min.X, node_min.Z); noise_hills_terrain->perlinMap2D(node_min.X, node_min.Z); noise_ridge_terrain->perlinMap2D(node_min.X, node_min.Z); noise_step_terrain->perlinMap2D(node_min.X, node_min.Z); noise_hills->perlinMap2D(node_min.X, node_min.Z); noise_ridge_mnt->perlinMap2D(node_min.X, node_min.Z); noise_step_mnt->perlinMap2D(node_min.X, node_min.Z); noise_mnt_var->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z); if (spflags & MGCARPATHIAN_RIVERS) noise_rivers->perlinMap2D(node_min.X, node_min.Z); //// Place nodes const v3s16 &em = vm->m_area.getExtent(); s16 stone_surface_max_y = -MAX_MAP_GENERATION_LIMIT; u32 index2d = 0; for (s16 z = node_min.Z; z <= node_max.Z; z++) for (s16 x = node_min.X; x <= node_max.X; x++, index2d++) { // Hill/Mountain height (hilliness) float height1 = noise_height1->result[index2d]; float height2 = noise_height2->result[index2d]; float height3 = noise_height3->result[index2d]; float height4 = noise_height4->result[index2d]; // Rolling hills float hterabs = std::fabs(noise_hills_terrain->result[index2d]); float n_hills = noise_hills->result[index2d]; float hill_mnt = hterabs * hterabs * hterabs * n_hills * n_hills; // Ridged mountains float rterabs = std::fabs(noise_ridge_terrain->result[index2d]); float n_ridge_mnt = noise_ridge_mnt->result[index2d]; float ridge_mnt = rterabs * rterabs * rterabs * (1.0f - std::fabs(n_ridge_mnt)); // Step (terraced) mountains float sterabs = std::fabs(noise_step_terrain->result[index2d]); float n_step_mnt = noise_step_mnt->result[index2d]; float step_mnt = sterabs * sterabs * sterabs * getSteps(n_step_mnt); // Rivers float valley = 1.0f; float river = 0.0f; if ((spflags & MGCARPATHIAN_RIVERS) && node_max.Y >= water_level - 16) { river = std::fabs(noise_rivers->result[index2d]) - river_width; if (river <= valley_width) { // Within river valley if (river < 0.0f) { // River channel valley = river; } else { // Valley slopes. // 0 at river edge, 1 at valley edge. float riversc = river / valley_width; // Smoothstep valley = riversc * riversc * (3.0f - 2.0f * riversc); } } } // Initialise 3D noise index and voxelmanip index to column base u32 index3d = (z - node_min.Z) * zstride_1u1d + (x - node_min.X); u32 vi = vm->m_area.index(x, node_min.Y - 1, z); for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++, index3d += ystride, VoxelArea::add_y(em, vi, 1)) { if (vm->m_data[vi].getContent() != CONTENT_IGNORE) continue; // Combine height noises and apply 3D variation float mnt_var = noise_mnt_var->result[index3d]; float hill1 = getLerp(height1, height2, mnt_var); float hill2 = getLerp(height3, height4, mnt_var); float hill3 = getLerp(height3, height2, mnt_var); float hill4 = getLerp(height1, height4, mnt_var); // 'hilliness' determines whether hills/mountains are // small or large float hilliness = std::fmax(std::fmin(hill1, hill2), std::fmin(hill3, hill4)); float hills = hill_mnt * hilliness; float ridged_mountains = ridge_mnt * hilliness; float step_mountains = step_mnt * hilliness; // Gradient & shallow seabed s32 grad = (y < water_level) ? grad_wl + (water_level - y) * 3 : 1 - y; // Final terrain level float mountains = hills + ridged_mountains + step_mountains; float surface_level = base_level + mountains + grad; // Rivers if ((spflags & MGCARPATHIAN_RIVERS) && node_max.Y >= water_level - 16 && river <= valley_width) { if (valley < 0.0f) { // River channel surface_level = std::fmin(surface_level, water_level - std::sqrt(-valley) * river_depth); } else if (surface_level > water_level) { // Valley slopes surface_level = water_level + (surface_level - water_level) * valley; } } if (y < surface_level) { //TODO '<=' vm->m_data[vi] = mn_stone; // Stone if (y > stone_surface_max_y) stone_surface_max_y = y; } else if (y <= water_level) { vm->m_data[vi] = mn_water; // Sea water } else { vm->m_data[vi] = mn_air; // Air } } } return stone_surface_max_y; }