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/*
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);
}
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