+++ /dev/null
-/*
-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 "util/numeric.h"
-#include "log.h"
-
-///////////////////////////////////////////////////////////////////////////////
-
-void NoiseIndev::init(NoiseParams *np, int seed, int sx, int sy, int sz) {
- Noise::init(np, seed, sx, sy, sz);
- this->npindev = (NoiseIndevParams*) 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, MapgenParams *params, EmergeManager *emerge)
- : MapgenV6(mapgenid, params, emerge)
-{
- MapgenIndevParams *sp = (MapgenIndevParams *)params->sparams;
-
- float_islands = sp->float_islands;
-
- noiseindev_terrain_base = new NoiseIndev(&sp->npindev_terrain_base, seed, csize.X, csize.Z);
- noiseindev_terrain_higher = new NoiseIndev(&sp->npindev_terrain_higher, seed, csize.X, csize.Z);
- noiseindev_steepness = new NoiseIndev(&sp->npindev_steepness, seed, csize.X, csize.Z);
- noiseindev_mud = new NoiseIndev(&sp->npindev_mud, seed, csize.X, csize.Z);
- noiseindev_float_islands1 = new NoiseIndev(&sp->npindev_float_islands1, seed, csize.X, csize.Y, csize.Z);
- noiseindev_float_islands2 = new NoiseIndev(&sp->npindev_float_islands2, seed, csize.X, csize.Y, csize.Z);
- noiseindev_float_islands3 = new NoiseIndev(&sp->npindev_float_islands3, seed, csize.X, csize.Z);
- noiseindev_biome = new NoiseIndev(&sp->npindev_biome, seed, csize.X, csize.Z);
-}
-
-MapgenIndev::~MapgenIndev() {
- delete noiseindev_terrain_base;
- delete noiseindev_terrain_higher;
- delete noiseindev_steepness;
- delete noiseindev_mud;
- 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);
-
- 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));
-}
-
-MapgenIndevParams::MapgenIndevParams() {
- float_islands = 500;
- npindev_terrain_base = NoiseIndevParams(-4, 20, v3f(250, 250, 250), 82341, 5, 0.6, 10, 10);
- npindev_terrain_higher = NoiseIndevParams(20, 16, v3f(500, 500, 500), 85039, 5, 0.6, 10, 10);
- npindev_steepness = NoiseIndevParams(0.85, 0.5, v3f(125, 125, 125), -932, 5, 0.7, 2, 10);
- npindev_mud = NoiseIndevParams(4, 2, v3f(200, 200, 200), 91013, 3, 0.55, 1, 1);
- npindev_biome = NoiseIndevParams(0, 1, v3f(250, 250, 250), 9130, 3, 0.50, 1, 10);
- npindev_float_islands1 = NoiseIndevParams(0, 1, v3f(256, 256, 256), 3683, 6, 0.6, 1, 1.5);
- npindev_float_islands2 = NoiseIndevParams(0, 1, v3f(8, 8, 8 ), 9292, 2, 0.5, 1, 1.5);
- npindev_float_islands3 = NoiseIndevParams(0, 1, v3f(256, 256, 256), 6412, 2, 0.5, 1, 0.5);
-}
-
-void MapgenIndevParams::readParams(Settings *settings) {
- MapgenV6Params::readParams(settings);
-
- settings->getS16NoEx("mgindev_float_islands", float_islands);
-
- settings->getNoiseIndevParams("mgindev_np_terrain_base", npindev_terrain_base);
- settings->getNoiseIndevParams("mgindev_np_terrain_higher", npindev_terrain_higher);
- settings->getNoiseIndevParams("mgindev_np_steepness", npindev_steepness);
- settings->getNoiseIndevParams("mgindev_np_mud", npindev_mud);
- settings->getNoiseIndevParams("mgindev_np_biome", npindev_biome);
- settings->getNoiseIndevParams("mgindev_np_float_islands1", npindev_float_islands1);
- settings->getNoiseIndevParams("mgindev_np_float_islands2", npindev_float_islands2);
- settings->getNoiseIndevParams("mgindev_np_float_islands3", npindev_float_islands3);
-}
-
-void MapgenIndevParams::writeParams(Settings *settings) {
- MapgenV6Params::writeParams(settings);
-
- settings->setS16("mgindev_float_islands", float_islands);
-
- 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->setNoiseIndevParams("mgindev_np_mud", npindev_mud);
- settings->setNoiseIndevParams("mgindev_np_biome", npindev_biome);
- 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::generateCaves(int max_stone_y) {
- float cave_amount = NoisePerlin2D(np_cave, node_min.X, node_min.Y, seed);
- int volume_nodes = (node_max.X - node_min.X + 1) *
- (node_max.Y - node_min.Y + 1) * MAP_BLOCKSIZE;
- cave_amount = MYMAX(0.0, cave_amount);
- u32 caves_count = cave_amount * volume_nodes / 50000;
- u32 bruises_count = 1;
- PseudoRandom ps(blockseed + 21343);
- PseudoRandom ps2(blockseed + 1032);
-
- if (ps.range(1, 6) == 1)
- bruises_count = ps.range(0, ps.range(0, 2));
-
- if (getBiome(v2s16(node_min.X, node_min.Z)) == BT_DESERT) {
- caves_count /= 3;
- bruises_count /= 3;
- }
-
- for (u32 i = 0; i < caves_count + bruises_count; i++) {
- bool large_cave = (i >= caves_count);
- CaveIndev cave(this, &ps, &ps2, node_min, large_cave);
-
- cave.makeCave(node_min, node_max, max_stone_y);
- }
-}
-
-CaveIndev::CaveIndev(MapgenIndev *mg, PseudoRandom *ps, PseudoRandom *ps2,
- v3s16 node_min, bool is_large_cave) {
- this->mg = mg;
- this->vm = mg->vm;
- this->ndef = mg->ndef;
- this->water_level = mg->water_level;
- this->large_cave = is_large_cave;
- this->ps = ps;
- this->ps2 = ps2;
- this->c_water_source = mg->c_water_source;
- this->c_lava_source = mg->c_lava_source;
-
- min_tunnel_diameter = 2;
- max_tunnel_diameter = ps->range(2,6);
- dswitchint = ps->range(1,14);
- flooded = large_cave && ps->range(0,4);
- if (large_cave) {
- part_max_length_rs = ps->range(2,4);
- float scale = farscale(0.2, node_min.X, node_min.Y, node_min.Z);
- if (node_min.Y < -100 && !ps->range(0, scale * 30)) { //huge
- flooded = !ps->range(0, 3);
- tunnel_routepoints = ps->range(5, 30);
- min_tunnel_diameter = 30;
- max_tunnel_diameter = ps->range(40, ps->range(80, 150));
- } else {
- tunnel_routepoints = ps->range(5, ps->range(15,30));
- min_tunnel_diameter = 5;
- max_tunnel_diameter = ps->range(7, ps->range(8,24));
- }
- } else {
- part_max_length_rs = ps->range(2,9);
- tunnel_routepoints = ps->range(10, ps->range(15,30));
- }
- 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;
- u32 zstride = xl + 1;
- float midy = node_min.Y + yl * 0.5;
- u32 index = 0;
- for (int z1 = 0; z1 <= zl; ++z1)
- for (int y1 = 0; y1 <= yl; ++y1)
- for (int x1 = 0; x1 <= xl; ++x1, ++index) {
- int y = y1 + node_min.Y;
- u32 index2d = z1 * zstride + x1;
- float noise3 = noiseindev_float_islands3->result[index2d];
- float pmidy = midy + noise3 / 1.5 * AMPY;
- 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::generateExperimental() {
- if (float_islands)
- generateFloatIslands(float_islands);
-}
+++ /dev/null
-/*
-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.
-*/
-
-#ifndef MAPGENINDEV_HEADER
-#define MAPGENINDEV_HEADER
-
-#include "mapgen.h"
-#include "mapgen_v6.h"
-#include "cavegen.h"
-
-float farscale(float scale, float z);
-float farscale(float scale, float x, float z);
-float farscale(float scale, float x, float y, float z);
-
-struct NoiseIndevParams : public NoiseParams {
- float farscale;
- float farspread;
-
- NoiseIndevParams() {}
- NoiseIndevParams(float offset_, float scale_, v3f spread_,
- int seed_, int octaves_, float persist_,
- float farscale_ = 1, float farspread_ = 1)
- {
- offset = offset_;
- scale = scale_;
- spread = spread_;
- seed = seed_;
- octaves = octaves_;
- persist = persist_;
-
- farscale = farscale_;
- farspread = farspread_;
- }
-
- ~NoiseIndevParams() {}
-};
-
-#define getNoiseIndevParams(x, y) getStruct((x), "f,f,v3,s32,s32,f,f,f", &(y), sizeof(y))
-#define setNoiseIndevParams(x, y) setStruct((x), "f,f,v3,s32,s32,f,f,f", &(y))
-
-class NoiseIndev : public Noise {
-public:
- NoiseIndevParams *npindev;
-
- virtual ~NoiseIndev() {};
- NoiseIndev(NoiseIndevParams *np, int seed, int sx, int sy);
- NoiseIndev(NoiseIndevParams *np, int seed, int sx, int sy, int sz);
- void init(NoiseParams *np, int seed, int sx, int sy, int sz);
- void transformNoiseMapFarScale(float xx = 0, float yy = 0, float zz = 0);
-};
-
-
-struct MapgenIndevParams : public MapgenV6Params {
- s16 float_islands;
- NoiseIndevParams npindev_terrain_base;
- NoiseIndevParams npindev_terrain_higher;
- NoiseIndevParams npindev_steepness;
- NoiseIndevParams npindev_mud;
- NoiseIndevParams npindev_biome;
- NoiseIndevParams npindev_float_islands1;
- NoiseIndevParams npindev_float_islands2;
- NoiseIndevParams npindev_float_islands3;
-
- MapgenIndevParams();
- ~MapgenIndevParams() {}
-
- void readParams(Settings *settings);
- void writeParams(Settings *settings);
-};
-
-class MapgenIndev : public MapgenV6 {
-public:
- NoiseIndev *noiseindev_terrain_base;
- NoiseIndev *noiseindev_terrain_higher;
- NoiseIndev *noiseindev_steepness;
- NoiseIndev *noiseindev_mud;
- NoiseIndev *noiseindev_biome;
- NoiseIndev *noiseindev_float_islands1;
- NoiseIndev *noiseindev_float_islands2;
- NoiseIndev *noiseindev_float_islands3;
- s16 float_islands;
-
- MapgenIndev(int mapgenid, MapgenParams *params, EmergeManager *emerge);
- ~MapgenIndev();
- void calculateNoise();
-
- float baseTerrainLevelFromNoise(v2s16 p);
- float baseTerrainLevelFromMap(int index);
- float getMudAmount(int index);
- void generateCaves(int max_stone_y);
- void generateExperimental();
-
- void generateFloatIslands(int min_y);
-};
-
-struct MapgenFactoryIndev : public MapgenFactoryV6 {
- Mapgen *createMapgen(int mgid, MapgenParams *params, EmergeManager *emerge) {
- return new MapgenIndev(mgid, params, emerge);
- };
-
- MapgenSpecificParams *createMapgenParams() {
- return new MapgenIndevParams();
- };
-};
-
-class CaveIndev : public CaveV6 {
-public:
- CaveIndev(MapgenIndev *mg, PseudoRandom *ps, PseudoRandom *ps2,
- v3s16 node_min, bool is_large_cave);
-};
-
-#endif
projects / zefram / minetest / minetest_engine.git / commitdiff