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Diffstat (limited to 'src/mapgen_indev.cpp')
| -rw-r--r-- | src/mapgen_indev.cpp | 371 |
1 files changed, 371 insertions, 0 deletions
diff --git a/src/mapgen_indev.cpp b/src/mapgen_indev.cpp new file mode 100644 index 000000000..5d455827a --- /dev/null +++ b/src/mapgen_indev.cpp @@ -0,0 +1,371 @@ +/* +Minetest +Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com> + +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 "mapgen_indev.h" +#include "constants.h" +#include "map.h" +#include "main.h" +#include "log.h" + +/////////////////// Mapgen Indev perlin noise (default values - not used, from config or defaultsettings) + +NoiseIndevParams nparams_indev_def; + +/* +NoiseIndevParams nparams_indev_def_terrain_base; +// (-AVERAGE_MUD_AMOUNT, 20.0, v3f(250.0, 250.0, 250.0), 82341, 5, 0.6, 1); +NoiseIndevParams nparams_indev_def_terrain_higher; +// (20.0, 16.0, v3f(500.0, 500.0, 500.0), 85039, 5, 0.6, 1); +NoiseIndevParams nparams_indev_def_steepness; +// (0.85, 0.5, v3f(125.0, 125.0, 125.0), -932, 5, 0.7, 1); +NoiseIndevParams nparams_indev_def_mud; +// (AVERAGE_MUD_AMOUNT, 2.0, v3f(200.0, 200.0, 200.0), 91013, 3, 0.55, 1); +NoiseIndevParams nparams_indev_def_float_islands; +// (1, 10.0, v3f(500.0, 500.0, 500.0), 32451, 5, 0.6, 1); +NoiseIndevParams nparams_indev_def_biome; +*/ + +/////////////////////////////////////////////////////////////////////////////// + +void NoiseIndev::init(NoiseIndevParams *np, int seed, int sx, int sy, int sz) { + Noise::init((NoiseParams*)np, seed, sx, sy, sz); + this->npindev = np; +} + +NoiseIndev::NoiseIndev(NoiseIndevParams *np, int seed, int sx, int sy) : Noise(np, seed, sx, sy) { + init(np, seed, sx, sy, 1); +} + +NoiseIndev::NoiseIndev(NoiseIndevParams *np, int seed, int sx, int sy, int sz) : Noise(np, seed, sx, sy, sz) { + init(np, seed, sx, sy, sz); +} + +float farscale(float scale, float z) { + return ( 1 + ( 1 - (MAP_GENERATION_LIMIT * 1 - (fabs(z)) ) / (MAP_GENERATION_LIMIT * 1) ) * (scale - 1) ); +} + +float farscale(float scale, float x, float z) { + return ( 1 + ( 1 - (MAP_GENERATION_LIMIT * 2 - (fabs(x) + fabs(z)) ) / (MAP_GENERATION_LIMIT * 2) ) * (scale - 1) ); +} + +float farscale(float scale, float x, float y, float z) { + return ( 1 + ( 1 - (MAP_GENERATION_LIMIT * 3 - (fabs(x) + fabs(y) + fabs(z)) ) / (MAP_GENERATION_LIMIT * 3) ) * (scale - 1) ); +} + +void NoiseIndev::transformNoiseMapFarScale(float xx, float yy, float zz) { + int i = 0; + for (int z = 0; z != sz; z++) { + for (int y = 0; y != sy; y++) { + for (int x = 0; x != sx; x++) { + result[i] = result[i] * npindev->scale * farscale(npindev->farscale, xx, yy, zz) + npindev->offset; + i++; + } + } + } +} + +MapgenIndev::MapgenIndev(int mapgenid, MapgenIndevParams *params, EmergeManager *emerge) + : MapgenV6(mapgenid, params, emerge) +{ + noiseindev_terrain_base = new NoiseIndev(params->npindev_terrain_base, seed, csize.X, csize.Z); + noiseindev_terrain_higher = new NoiseIndev(params->npindev_terrain_higher, seed, csize.X, csize.Z); + noiseindev_steepness = new NoiseIndev(params->npindev_steepness, seed, csize.X, csize.Z); +// noise_height_select = new Noise(params->np_height_select, seed, csize.X, csize.Y); +// noise_trees = new Noise(params->np_trees, seed, csize.X, csize.Y); + noiseindev_mud = new NoiseIndev(params->npindev_mud, seed, csize.X, csize.Z); +// noise_beach = new Noise(params->np_beach, seed, csize.X, csize.Y); + noiseindev_float_islands1 = new NoiseIndev(params->npindev_float_islands1, seed, csize.X, csize.Y, csize.Z); + noiseindev_float_islands2 = new NoiseIndev(params->npindev_float_islands2, seed, csize.X, csize.Y, csize.Z); + noiseindev_float_islands3 = new NoiseIndev(params->npindev_float_islands3, seed, csize.X, csize.Z); + noiseindev_biome = new NoiseIndev(params->npindev_biome, seed, csize.X, csize.Z); +} + +MapgenIndev::~MapgenIndev() { + delete noiseindev_terrain_base; + delete noiseindev_terrain_higher; + delete noiseindev_steepness; + //delete noise_height_select; + //delete noise_trees; + delete noiseindev_mud; + //delete noise_beach; + delete noiseindev_float_islands1; + delete noiseindev_float_islands2; + delete noiseindev_float_islands3; + delete noiseindev_biome; +} + +void MapgenIndev::calculateNoise() { + int x = node_min.X; + int y = node_min.Y; + int z = node_min.Z; + // Need to adjust for the original implementation's +.5 offset... + if (!(flags & MG_FLAT)) { + noiseindev_terrain_base->perlinMap2D( + x + 0.5 * noiseindev_terrain_base->npindev->spread.X * farscale(noiseindev_terrain_base->npindev->farspread, x, z), + z + 0.5 * noiseindev_terrain_base->npindev->spread.Z * farscale(noiseindev_terrain_base->npindev->farspread, x, z)); + noiseindev_terrain_base->transformNoiseMapFarScale(x, y, z); + + noiseindev_terrain_higher->perlinMap2D( + x + 0.5 * noiseindev_terrain_higher->npindev->spread.X * farscale(noiseindev_terrain_higher->npindev->farspread, x, z), + z + 0.5 * noiseindev_terrain_higher->npindev->spread.Z * farscale(noiseindev_terrain_higher->npindev->farspread, x, z)); + noiseindev_terrain_higher->transformNoiseMapFarScale(x, y, z); + + noiseindev_steepness->perlinMap2D( + x + 0.5 * noiseindev_steepness->npindev->spread.X * farscale(noiseindev_steepness->npindev->farspread, x, z), + z + 0.5 * noiseindev_steepness->npindev->spread.Z * farscale(noiseindev_steepness->npindev->farspread, x, z)); + noiseindev_steepness->transformNoiseMapFarScale(x, y, z); + + noise_height_select->perlinMap2D( + x + 0.5 * noise_height_select->np->spread.X, + z + 0.5 * noise_height_select->np->spread.Z); + + noiseindev_float_islands1->perlinMap3D( + x + 0.33 * noiseindev_float_islands1->npindev->spread.X * farscale(noiseindev_float_islands1->npindev->farspread, x, y, z), + y + 0.33 * noiseindev_float_islands1->npindev->spread.Y * farscale(noiseindev_float_islands1->npindev->farspread, x, y, z), + z + 0.33 * noiseindev_float_islands1->npindev->spread.Z * farscale(noiseindev_float_islands1->npindev->farspread, x, y, z) + ); + noiseindev_float_islands1->transformNoiseMapFarScale(x, y, z); + + noiseindev_float_islands2->perlinMap3D( + x + 0.33 * noiseindev_float_islands2->npindev->spread.X * farscale(noiseindev_float_islands2->npindev->farspread, x, y, z), + y + 0.33 * noiseindev_float_islands2->npindev->spread.Y * farscale(noiseindev_float_islands2->npindev->farspread, x, y, z), + z + 0.33 * noiseindev_float_islands2->npindev->spread.Z * farscale(noiseindev_float_islands2->npindev->farspread, x, y, z) + ); + noiseindev_float_islands2->transformNoiseMapFarScale(x, y, z); + + noiseindev_float_islands3->perlinMap2D( + x + 0.5 * noiseindev_float_islands3->npindev->spread.X * farscale(noiseindev_float_islands3->npindev->farspread, x, z), + z + 0.5 * noiseindev_float_islands3->npindev->spread.Z * farscale(noiseindev_float_islands3->npindev->farspread, x, z)); + noiseindev_float_islands3->transformNoiseMapFarScale(x, y, z); + + } + + if (!(flags & MG_FLAT)) { + noiseindev_mud->perlinMap2D( + x + 0.5 * noiseindev_mud->npindev->spread.X * farscale(noiseindev_mud->npindev->farspread, x, y, z), + z + 0.5 * noiseindev_mud->npindev->spread.Z * farscale(noiseindev_mud->npindev->farspread, x, y, z)); + noiseindev_mud->transformNoiseMapFarScale(x, y, z); + } + noise_beach->perlinMap2D( + x + 0.2 * noise_beach->np->spread.X, + z + 0.7 * noise_beach->np->spread.Z); + + noise_biome->perlinMap2D( + x + 0.6 * noiseindev_biome->npindev->spread.X * farscale(noiseindev_biome->npindev->farspread, x, z), + z + 0.2 * noiseindev_biome->npindev->spread.Z * farscale(noiseindev_biome->npindev->farspread, x, z)); +} + +bool MapgenIndevParams::readParams(Settings *settings) { + freq_desert = settings->getFloat("mgv6_freq_desert"); + freq_beach = settings->getFloat("mgv6_freq_beach"); + + npindev_terrain_base = settings->getNoiseIndevParams("mgindev_np_terrain_base"); + npindev_terrain_higher = settings->getNoiseIndevParams("mgindev_np_terrain_higher"); + npindev_steepness = settings->getNoiseIndevParams("mgindev_np_steepness"); + np_height_select = settings->getNoiseParams("mgv6_np_height_select"); + np_trees = settings->getNoiseParams("mgv6_np_trees"); + npindev_mud = settings->getNoiseIndevParams("mgindev_np_mud"); + np_beach = settings->getNoiseParams("mgv6_np_beach"); + npindev_biome = settings->getNoiseIndevParams("mgindev_np_biome"); + np_cave = settings->getNoiseParams("mgv6_np_cave"); + npindev_float_islands1 = settings->getNoiseIndevParams("mgindev_np_float_islands1"); + npindev_float_islands2 = settings->getNoiseIndevParams("mgindev_np_float_islands2"); + npindev_float_islands3 = settings->getNoiseIndevParams("mgindev_np_float_islands3"); + + bool success = + npindev_terrain_base && npindev_terrain_higher && npindev_steepness && + np_height_select && np_trees && npindev_mud && + np_beach && np_biome && np_cave && + npindev_float_islands1 && npindev_float_islands2 && npindev_float_islands3; + return success; +} + +void MapgenIndevParams::writeParams(Settings *settings) { + settings->setFloat("mgv6_freq_desert", freq_desert); + settings->setFloat("mgv6_freq_beach", freq_beach); + + settings->setNoiseIndevParams("mgindev_np_terrain_base", npindev_terrain_base); + settings->setNoiseIndevParams("mgindev_np_terrain_higher", npindev_terrain_higher); + settings->setNoiseIndevParams("mgindev_np_steepness", npindev_steepness); + settings->setNoiseParams("mgv6_np_height_select", np_height_select); + settings->setNoiseParams("mgv6_np_trees", np_trees); + settings->setNoiseIndevParams("mgindev_np_mud", npindev_mud); + settings->setNoiseParams("mgv6_np_beach", np_beach); + settings->setNoiseIndevParams("mgindev_np_biome", npindev_biome); + settings->setNoiseParams("mgv6_np_cave", np_cave); + settings->setNoiseIndevParams("mgindev_np_float_islands1", npindev_float_islands1); + settings->setNoiseIndevParams("mgindev_np_float_islands2", npindev_float_islands2); + settings->setNoiseIndevParams("mgindev_np_float_islands3", npindev_float_islands3); +} + + +float MapgenIndev::baseTerrainLevelFromNoise(v2s16 p) { + if (flags & MG_FLAT) + return water_level; + + float terrain_base = NoisePerlin2DPosOffset(noiseindev_terrain_base->npindev, + p.X, 0.5, p.Y, 0.5, seed); + float terrain_higher = NoisePerlin2DPosOffset(noiseindev_terrain_higher->npindev, + p.X, 0.5, p.Y, 0.5, seed); + float steepness = NoisePerlin2DPosOffset(noiseindev_steepness->npindev, + p.X, 0.5, p.Y, 0.5, seed); + float height_select = NoisePerlin2DNoTxfmPosOffset(noise_height_select->np, + p.X, 0.5, p.Y, 0.5, seed); + + return baseTerrainLevel(terrain_base, terrain_higher, + steepness, height_select); +} + +float MapgenIndev::baseTerrainLevelFromMap(int index) { + if (flags & MG_FLAT) + return water_level; + + float terrain_base = noiseindev_terrain_base->result[index]; + float terrain_higher = noiseindev_terrain_higher->result[index]; + float steepness = noiseindev_steepness->result[index]; + float height_select = noise_height_select->result[index]; + + return baseTerrainLevel(terrain_base, terrain_higher, + steepness, height_select); +} + +float MapgenIndev::getMudAmount(int index) { + if (flags & MG_FLAT) + return AVERAGE_MUD_AMOUNT; + + /*return ((float)AVERAGE_MUD_AMOUNT + 2.0 * noise2d_perlin( + 0.5+(float)p.X/200, 0.5+(float)p.Y/200, + seed+91013, 3, 0.55));*/ + + return noiseindev_mud->result[index]; +} + +void MapgenIndev::defineCave(Cave & cave, PseudoRandom ps, v3s16 node_min, bool large_cave) { + cave.min_tunnel_diameter = 2; + cave.max_tunnel_diameter = ps.range(2,6); + cave.dswitchint = ps.range(1,14); + cave.flooded = large_cave && ps.range(0,4); + if(large_cave){ + cave.part_max_length_rs = ps.range(2,4); + if (node_min.Y < -100 && !ps.range(0, farscale(0.2, node_min.X,node_min.Y,node_min.Z)*30)) { //huge + cave.flooded = !ps.range(0, 3); + cave.tunnel_routepoints = ps.range(5, 20); + cave.min_tunnel_diameter = 30; + cave.max_tunnel_diameter = ps.range(40, ps.range(80,120)); + } else { + cave.tunnel_routepoints = ps.range(5, ps.range(15,30)); + cave.min_tunnel_diameter = 5; + cave.max_tunnel_diameter = ps.range(7, ps.range(8,24)); + } + } else { + cave.part_max_length_rs = ps.range(2,9); + cave.tunnel_routepoints = ps.range(10, ps.range(15,30)); + } + cave.large_cave_is_flat = (ps.range(0,1) == 0); +} + +/* +// version with one perlin3d. use with good params like +settings->setDefault("mgindev_np_float_islands1", "-9.5, 10, (20, 50, 50 ), 45123, 5, 0.6, 1.5, 5"); +void MapgenIndev::generateFloatIslands(int min_y) { + if (node_min.Y < min_y) return; + v3s16 p0(node_min.X, node_min.Y, node_min.Z); + MapNode n1(c_stone), n2(c_desert_stone); + int xl = node_max.X - node_min.X; + int yl = node_max.Y - node_min.Y; + int zl = node_max.Z - node_min.Z; + u32 index = 0; + for (int x1 = 0; x1 <= xl; x1++) + { + //int x = x1 + node_min.Y; + for (int z1 = 0; z1 <= zl; z1++) + { + //int z = z1 + node_min.Z; + for (int y1 = 0; y1 <= yl; y1++, index++) + { + //int y = y1 + node_min.Y; + float noise = noiseindev_float_islands1->result[index]; + //dstream << " y1="<<y1<< " x1="<<x1<<" z1="<<z1<< " noise="<<noise << std::endl; + if (noise > 0 ) { + v3s16 p = p0 + v3s16(x1, y1, z1); + u32 i = vm->m_area.index(p); + if (!vm->m_area.contains(i)) + continue; + // Cancel if not air + if (vm->m_data[i].getContent() != CONTENT_AIR) + continue; + vm->m_data[i] = noise > 1 ? n1 : n2; + } + } + } + } +} +*/ + +void MapgenIndev::generateFloatIslands(int min_y) { + if (node_min.Y < min_y) return; + PseudoRandom pr(blockseed + 985); + // originally from http://forum.minetest.net/viewtopic.php?id=4776 + float RAR = 0.8 * farscale(0.4, node_min.Y); // 0.4; // Island rarity in chunk layer. -0.4 = thick layer with holes, 0 = 50%, 0.4 = desert rarity, 0.7 = very rare. + float AMPY = 24; // 24; // Amplitude of island centre y variation. + float TGRAD = 24; // 24; // Noise gradient to create top surface. Tallness of island top. + float BGRAD = 24; // 24; // Noise gradient to create bottom surface. Tallness of island bottom. + + v3s16 p0(node_min.X, node_min.Y, node_min.Z); + MapNode n1(c_stone); + + float xl = node_max.X - node_min.X; + float yl = node_max.Y - node_min.Y; + float zl = node_max.Z - node_min.Z; + float midy = node_min.Y + yl * 0.5; + u32 index = 0, index2d = 0; + for (int x1 = 0; x1 <= xl; ++x1) + { + for (int z1 = 0; z1 <= zl; ++z1, ++index2d) + { + float noise3 = noiseindev_float_islands3->result[index2d]; + float pmidy = midy + noise3 / 1.5 * AMPY; + for (int y1 = 0; y1 <= yl; ++y1, ++index) + { + int y = y1 + node_min.Y; + float noise1 = noiseindev_float_islands1->result[index]; + float offset = y > pmidy ? (y - pmidy) / TGRAD : (pmidy - y) / BGRAD; + float noise1off = noise1 - offset - RAR; + if (noise1off > 0 && noise1off < 0.7) { + float noise2 = noiseindev_float_islands2->result[index]; + if (noise2 - noise1off > -0.7){ + v3s16 p = p0 + v3s16(x1, y1, z1); + u32 i = vm->m_area.index(p); + if (!vm->m_area.contains(i)) + continue; + // Cancel if not air + if (vm->m_data[i].getContent() != CONTENT_AIR) + continue; + vm->m_data[i] = n1; + } + } + } + } + } +} + +void MapgenIndev::generateSomething() { + int float_islands = g_settings->getS16("mgindev_float_islands"); + if(float_islands) generateFloatIslands(float_islands); +} |