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Diffstat (limited to 'src/mapgen_indev.cpp')
| -rw-r--r-- | src/mapgen_indev.cpp | 246 |
1 files changed, 246 insertions, 0 deletions
diff --git a/src/mapgen_indev.cpp b/src/mapgen_indev.cpp new file mode 100644 index 000000000..e9ab36ae9 --- /dev/null +++ b/src/mapgen_indev.cpp @@ -0,0 +1,246 @@ +/* +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 "log.h" + +/////////////////// Mapgen Indev perlin noise default values + +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); + +/////////////////////////////////////////////////////////////////////////////// + +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 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) { + // more correct use distantion from 0,0,0 via pow, but + is faster + //float farscale = ( 1 + ( 1 - (MAP_GENERATION_LIMIT * 3 - (fabs(xx) + fabs(yy) + fabs(zz)) ) / (MAP_GENERATION_LIMIT * 3) ) * ((npindev)->farscale - 1) ); + // dstream << "TNM rs=" << farscale << " from=" << (npindev)->farscale << " x=" << xx << " y=" << yy <<" z=" << zz << std::endl; + 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->offset; + result[i] = result[i] * npindev->scale * farscale(npindev->farscale,xx,yy,zz) + npindev->offset; + i++; + } + } + } +} + +MapgenIndev::MapgenIndev(int mapgenid, MapgenIndevParams *params) : MapgenV6(mapgenid, params) { + noiseindev_terrain_base = new NoiseIndev(params->npindev_terrain_base, seed, csize.X, csize.Y); + noiseindev_terrain_higher = new NoiseIndev(params->npindev_terrain_higher, seed, csize.X, csize.Y); + noiseindev_steepness = new NoiseIndev(params->npindev_steepness, seed, csize.X, csize.Y); +// 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.Y); +// noise_beach = new Noise(params->np_beach, seed, csize.X, csize.Y); +// noise_biome = new Noise(params->np_biome, seed, csize.X, csize.Y); +} + +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 noise_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, + z + 0.5 * noiseindev_terrain_base->npindev->spread.Z); + noiseindev_terrain_base->transformNoiseMapFarScale(x, y, z); + //noise_terrain_base->transformNoiseMap(); + + noiseindev_terrain_higher->perlinMap2D( + x + 0.5 * noiseindev_terrain_higher->npindev->spread.X, + z + 0.5 * noiseindev_terrain_higher->npindev->spread.Z); + noiseindev_terrain_higher->transformNoiseMapFarScale(x, y, z); + //noise_terrain_higher->transformNoiseMap(); + + noiseindev_steepness->perlinMap2D( + x + 0.5 * noiseindev_steepness->npindev->spread.X, + z + 0.5 * noiseindev_steepness->npindev->spread.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); + } + + if (!(flags & MG_FLAT)) { + noiseindev_mud->perlinMap2D( + x + 0.5 * noiseindev_mud->npindev->spread.X, + z + 0.5 * noiseindev_mud->npindev->spread.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 * noise_biome->np->spread.X, + z + 0.2 * noise_biome->np->spread.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"); + np_biome = settings->getNoiseParams("mgv6_np_biome"); + np_cave = settings->getNoiseParams("mgv6_np_cave"); + + bool success = + npindev_terrain_base && npindev_terrain_higher && npindev_steepness && + np_height_select && np_trees && npindev_mud && + np_beach && np_biome && np_cave; + 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->setNoiseParams("mgv6_np_biome", np_biome); + settings->setNoiseParams("mgv6_np_cave", np_cave); +} + + +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.tunnel_routepoints = 0; + //cave.part_max_length_rs = 0; + cave.flooded = large_cave && ps.range(0,4); + if(large_cave){ + cave.part_max_length_rs = ps.range(2,4); +//dstream<<"try:"<<farscale(0.2, node_min.X,node_min.Y,node_min.Z)*30<<std::endl; + if (node_min.Y < -500 && !ps.range(0, farscale(0.2, node_min.X,node_min.Y,node_min.Z)*30)) { //huge + cave.flooded = ps.range(0, 1); +//dstream<<"HUGE:"<<cave.flooded<<std::endl; + cave.tunnel_routepoints = ps.range(5, 1522); + cave.min_tunnel_diameter = 30; + cave.max_tunnel_diameter = ps.range(30, ps.range(80,120)); + } else { +//dstream<<"large:"<<cave.flooded<<std::endl; + 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); +}; |