advtrains_train_track/models/advtrains_dtrack_vst31.obj


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# Blender v2.78 (sub 0) OBJ File: 'rail_redo.blend'
# www.blender.org
o dtrack_vst31_Cube.000
v 0.753760 -0.500000 -0.500000
v 0.753760 -0.500000 0.500000
v 0.753760 -0.166667 0.500000
v -0.753760 -0.500000 -0.500000
v -0.753760 -0.500000 0.500000
v -0.753760 -0.166667 0.500000
v 0.329165 -0.308041 0.171599
v 0.329165 -0.143980 0.171599
v 0.329165 -0.422440 -0.171599
v 0.329165 -0.258379 -0.171599
v 0.462280 -0.308041 0.171599
v 0.462280 -0.143980 0.171599
v 0.462280 -0.422440 -0.171599
v 0.462280 -0.258379 -0.171599
v 0.412289 -0.126667 0.500000
v 0.412289 -0.460000 -0.500000
v 0.560528 -0.460000 -0.500000
v 0.560528 -0.126667 0.500000
v 0.474055 -0.106667 0.500000
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v 0.498762 -0.106667 0.500000
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v 0.474055 -0.390000 -0.500000
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v 0.498762 -0.056667 0.500000
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v 0.443172 -0.051667 0.500000
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v 0.529645 -0.026667 0.500000
v 0.443172 -0.026667 0.500000
v 0.443172 -0.360000 -0.500000
v 0.741194 -0.198333 0.435000
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v -0.741194 -0.148333 0.435000
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v 0.741194 -0.188333 0.315000
v -0.011733 2.712519 0.500000
v -0.011732 2.379186 -0.500001
v -0.011733 2.734147 0.500000
v -0.011732 2.400814 -0.500000
v 0.011732 2.379186 -0.500000
v 0.011732 2.712519 0.500000
v 0.011732 2.400814 -0.500000
v 0.011732 2.734148 0.500000
v -0.412289 -0.460000 -0.500000
v -0.412289 -0.126667 0.500000
v -0.560528 -0.126667 0.500000
v -0.560528 -0.460000 -0.500000
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v -0.443172 -0.385000 -0.500000
v -0.443172 -0.051666 0.500000
v -0.529645 -0.026667 0.500000
v -0.529645 -0.360000 -0.500000
v -0.443172 -0.360000 -0.500000
v -0.443172 -0.026666 0.500000
v -0.741194 -0.488333 -0.435000
v 0.741194 -0.488333 -0.435000
v 0.741194 -0.448333 -0.315000
v -0.741194 -0.448333 -0.315000
v -0.741193 -0.438333 -0.435000
v 0.741194 -0.438333 -0.435000
v 0.741194 -0.398333 -0.315000
v -0.741194 -0.398333 -0.315000
v 0.741194 -0.280713 0.187862
v -0.741194 -0.280713 0.187862
v -0.741194 -0.320713 0.067862
v 0.741194 -0.320713 0.067862
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v 0.741194 -0.355954 -0.187862
v 0.741194 -0.315954 -0.067862
v -0.741194 -0.315954 -0.067862
v -0.329165 -0.308041 0.171599
v -0.329165 -0.143980 0.171599
v -0.329165 -0.422440 -0.171599
v -0.329165 -0.258379 -0.171599
v -0.462280 -0.308041 0.171599
v -0.462280 -0.143980 0.171599
v -0.462280 -0.422440 -0.171599
v -0.462280 -0.258379 -0.171599
vt 0.7427 0.1169
vt 0.7427 0.3317
vt 0.6400 0.3317
vt 0.6400 0.1169
vt 0.8260 0.3317
vt 0.8260 0.4343
vt 0.7427 0.4343
vt 0.8260 0.1169
vt 0.7427 0.0142
vt 0.8260 0.0142
vt 0.5691 0.2971
vt 0.5691 0.9229
vt 0.5378 0.9229
vt 0.5378 0.2971
vt 0.3413 0.2971
vt 0.3819 0.2971
vt 0.3819 0.9229
vt 0.3413 0.9229
vt 0.4291 0.9855
vt 0.4678 0.9730
vt 0.4833 0.9730
vt 0.5219 0.9855
vt 0.6097 0.9229
vt 0.6097 0.2971
vt 0.4678 0.2470
vt 0.4291 0.2345
vt 0.5219 0.2345
vt 0.4833 0.2470
vt 0.4833 0.2783
vt 0.4678 0.2783
vt 0.4132 0.2971
vt 0.4132 0.9229
vt 0.4678 0.9417
vt 0.4833 0.9417
vt 0.5182 0.9229
vt 0.5182 0.2971
vt 0.4328 0.2971
vt 0.4328 0.9229
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vt 0.4485 0.2971
vt 0.4485 0.9229
vt 0.5026 0.2814
vt 0.4485 0.2814
vt 0.4485 0.9386
vt 0.5026 0.9386
vt 0.9588 0.9625
vt 0.8837 0.9625
vt 0.8837 0.0348
vt 0.9588 0.0348
vt 0.9901 0.9625
vt 0.9901 0.0348
vt 0.9588 0.0035
vt 0.8837 0.0035
vt 0.8524 0.0348
vt 0.8524 0.9625
vt 0.9588 0.9938
vt 0.8837 0.9938
vt 0.6554 0.3627
vt 0.6690 0.3627
vt 0.6690 0.9885
vt 0.6554 0.9885
vt 0.6972 0.9885
vt 0.6837 0.9885
vt 0.6837 0.3627
vt 0.6972 0.3627
vt 0.7119 0.3627
vt 0.7119 0.9885
vt 0.5691 0.2971
vt 0.5691 0.9229
vt 0.5378 0.9229
vt 0.5378 0.2971
vt 0.3413 0.2971
vt 0.3819 0.2971
vt 0.3819 0.9229
vt 0.3413 0.9229
vt 0.4291 0.9855
vt 0.4678 0.9730
vt 0.4833 0.9730
vt 0.5219 0.9855
vt 0.6097 0.9229
vt 0.6097 0.2971
vt 0.4678 0.2470
vt 0.4291 0.2345
vt 0.5219 0.2345
vt 0.4833 0.2470
vt 0.4833 0.2783
vt 0.4678 0.2783
vt 0.4132 0.2971
vt 0.4132 0.9229
vt 0.4678 0.9417
vt 0.4833 0.9417
vt 0.5182 0.9229
vt 0.5182 0.2971
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vt 0.5026 0.9386
vt 0.9588 0.9625
vt 0.8837 0.9625
vt 0.8837 0.0348
vt 0.9588 0.0348
vt 0.9901 0.9625
vt 0.9901 0.0348
vt 0.9588 0.0035
vt 0.8837 0.0035
vt 0.8524 0.0348
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vt 0.9588 0.9938
vt 0.8837 0.9938
vt 0.9588 0.9625
vt 0.8837 0.9625
vt 0.8837 0.0348
vt 0.9588 0.0348
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vt 0.9901 0.0348
vt 0.9588 0.0035
vt 0.8837 0.0035
vt 0.8524 0.0348
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vt 0.8837 0.9938
vt 0.9588 0.9625
vt 0.8837 0.9625
vt 0.8837 0.0348
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vt 0.9901 0.9625
vt 0.9901 0.0348
vt 0.9588 0.0035
vt 0.8837 0.0035
vt 0.8524 0.0348
vt 0.8524 0.9625
vt 0.9588 0.9938
vt 0.8837 0.9938
vt 0.7427 0.1169
vt 0.6400 0.1169
vt 0.6400 0.3317
vt 0.7427 0.3317
vt 0.7427 0.4343
vt 0.8260 0.4343
vt 0.8260 0.3317
vt 0.8260 0.1169
vt 0.8260 0.0142
vt 0.7427 0.0142
vt 1.1949 -0.0470
vt -0.3152 -0.0470
vt -0.3152 -0.3809
vt 1.1949 -0.3809
vt -0.3120 1.0015
vt -0.3120 -0.0002
vt 1.1981 -0.0002
vt 1.1981 1.0015
vt 1.1949 1.0089
vt 1.5117 0.0586
vt -0.3152 1.0089
vt -0.6320 0.0586
vn -1.0000 0.0000 -0.0000
vn 0.0000 0.0000 -1.0000
vn -0.0000 0.0000 1.0000
vn 0.0000 0.9487 -0.3162
vn 1.0000 0.0000 0.0000
vn -0.2936 0.9069 -0.3023
vn 0.2936 0.9069 -0.3023
vn 0.1518 -0.9377 0.3126
vn -0.1518 -0.9377 0.3126
vn 0.0000 -0.9487 0.3162
vn 0.0000 -1.0000 0.0000
g dtrack_vst31_Cube.000_SlopeRailMaterial
s off
f 8/1/1 10/2/1 9/3/1 7/4/1
f 10/2/2 14/5/2 13/6/2 9/7/2
f 12/8/3 8/1/3 7/9/3 11/10/3
f 12/8/4 14/5/4 10/2/4 8/1/4
f 22/11/5 21/12/5 25/13/5 26/14/5
f 15/15/6 19/16/6 20/17/6 16/18/6
f 16/19/2 20/20/2 21/21/2 17/22/2
f 17/23/7 21/12/7 22/11/7 18/24/7
f 19/25/3 15/26/3 18/27/3 22/28/3
f 26/29/3 23/30/3 19/25/3 22/28/3
f 19/16/1 23/31/1 24/32/1 20/17/1
f 21/21/2 20/20/2 24/33/2 25/34/2
f 26/14/8 25/13/8 27/35/8 28/36/8
f 24/32/9 23/31/9 29/37/9 30/38/9
f 28/36/5 27/35/5 31/39/5 32/40/5
f 30/38/1 29/37/1 33/41/1 34/42/1
f 31/39/4 34/42/4 33/41/4 32/40/4
f 23/30/3 26/29/3 28/43/3 32/40/3 33/41/3 29/44/3
f 24/33/2 30/45/2 34/42/2 31/39/2 27/46/2 25/34/2
f 39/47/4 42/48/4 41/49/4 40/50/4
f 35/51/3 39/47/3 40/50/3 36/52/3
f 36/53/1 40/50/1 41/49/1 37/54/1
f 37/55/2 41/49/2 42/48/2 38/56/2
f 39/47/5 35/57/5 38/58/5 42/48/5
f 43/59/1 45/60/1 46/61/1 44/62/1
f 47/63/5 49/64/5 50/65/5 48/66/5
f 43/67/10 44/68/10 47/63/10 48/66/10
f 45/60/4 50/65/4 49/64/4 46/61/4
f 58/69/1 57/70/1 61/71/1 62/72/1
f 51/73/7 55/74/7 56/75/7 52/76/7
f 52/77/3 56/78/3 57/79/3 53/80/3
f 53/81/6 57/70/6 58/69/6 54/82/6
f 55/83/2 51/84/2 54/85/2 58/86/2
f 62/87/2 59/88/2 55/83/2 58/86/2
f 55/74/5 59/89/5 60/90/5 56/75/5
f 57/79/3 56/78/3 60/91/3 61/92/3
f 62/72/9 61/71/9 63/93/9 64/94/9
f 60/90/8 59/89/8 65/95/8 66/96/8
f 64/94/1 63/93/1 67/97/1 68/98/1
f 66/96/5 65/95/5 69/99/5 70/100/5
f 67/97/4 70/100/4 69/99/4 68/98/4
f 59/88/2 62/87/2 64/101/2 68/98/2 69/99/2 65/102/2
f 60/91/3 66/103/3 70/100/3 67/97/3 63/104/3 61/92/3
f 75/105/4 78/106/4 77/107/4 76/108/4
f 71/109/2 75/105/2 76/108/2 72/110/2
f 72/111/5 76/108/5 77/107/5 73/112/5
f 73/113/3 77/107/3 78/106/3 74/114/3
f 75/105/1 71/115/1 74/116/1 78/106/1
f 83/117/4 86/118/4 85/119/4 84/120/4
f 79/121/3 83/117/3 84/120/3 80/122/3
f 80/123/1 84/120/1 85/119/1 81/124/1
f 81/125/2 85/119/2 86/118/2 82/126/2
f 83/117/5 79/127/5 82/128/5 86/118/5
f 91/129/4 94/130/4 93/131/4 92/132/4
f 87/133/2 91/129/2 92/132/2 88/134/2
f 88/135/5 92/132/5 93/131/5 89/136/5
f 89/137/3 93/131/3 94/130/3 90/138/3
f 91/129/1 87/139/1 90/140/1 94/130/1
f 96/141/5 95/142/5 97/143/5 98/144/5
f 98/144/2 97/145/2 101/146/2 102/147/2
f 100/148/3 99/149/3 95/150/3 96/141/3
f 100/148/4 96/141/4 98/144/4 102/147/4
g dtrack_vst31_Cube.000_SlopeGravelMaterial
f 3/151/3 6/152/3 5/153/3 2/154/3
f 1/155/11 2/156/11 5/157/11 4/158/11
f 1/159/5 3/151/5 2/160/5
f 6/152/1 4/161/1 5/162/1
f 4/161/4 6/152/4 3/151/4 1/159/4
/*
Minetest
Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>

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.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 "settings.h" // For g_settings
#include "emerge.h"
#include "dungeongen.h"
#include "cavegen.h"
#include "treegen.h"
#include "mg_biome.h"
#include "mg_ore.h"
#include "mg_decoration.h"
#include "mapgen_v7.h"


FlagDesc flagdesc_mapgen_v7[] = {
	{"mountains", MGV7_MOUNTAINS},
	{"ridges",    MGV7_RIDGES},
	{NULL,        0}
};

///////////////////////////////////////////////////////////////////////////////


MapgenV7::MapgenV7(int mapgenid, MapgenParams *params, EmergeManager *emerge)
	: Mapgen(mapgenid, params, emerge)
{
	this->m_emerge = emerge;
	this->bmgr     = emerge->biomemgr;

	//// amount of elements to skip for the next index
	//// for noise/height/biome maps (not vmanip)
	this->ystride = csize.X;
	this->zstride = csize.X * (csize.Y + 2);

	this->biomemap        = new u8[csize.X * csize.Z];
	this->heightmap       = new s16[csize.X * csize.Z];
	this->heatmap         = NULL;
	this->humidmap        = NULL;
	this->ridge_heightmap = new s16[csize.X * csize.Z];

	MapgenV7Params *sp = (MapgenV7Params *)params->sparams;
	this->spflags = sp->spflags;

	//// Terrain noise
	noise_terrain_base    = new Noise(&sp->np_terrain_base,    seed, csize.X, csize.Z);
	noise_terrain_alt     = new Noise(&sp->np_terrain_alt,     seed, csize.X, csize.Z);
	noise_terrain_persist = new Noise(&sp->np_terrain_persist, seed, csize.X, csize.Z);
	noise_height_select   = new Noise(&sp->np_height_select,   seed, csize.X, csize.Z);
	noise_filler_depth    = new Noise(&sp->np_filler_depth,    seed, csize.X, csize.Z);
	noise_mount_height    = new Noise(&sp->np_mount_height,    seed, csize.X, csize.Z);
	noise_ridge_uwater    = new Noise(&sp->np_ridge_uwater,    seed, csize.X, csize.Z);

	//// 3d terrain noise
	noise_mountain = new Noise(&sp->np_mountain, seed, csize.X, csize.Y + 2, csize.Z);
	noise_ridge    = new Noise(&sp->np_ridge,    seed, csize.X, csize.Y + 2, csize.Z);
	noise_cave1    = new Noise(&sp->np_cave1,    seed, csize.X, csize.Y + 2, csize.Z);
	noise_cave2    = new Noise(&sp->np_cave2,    seed, csize.X, csize.Y + 2, csize.Z);

	//// Biome noise
	noise_heat           = new Noise(&params->np_biome_heat,           seed, csize.X, csize.Z);
	noise_humidity       = new Noise(&params->np_biome_humidity,       seed, csize.X, csize.Z);
	noise_heat_blend     = new Noise(&params->np_biome_heat_blend,     seed, csize.X, csize.Z);
	noise_humidity_blend = new Noise(&params->np_biome_humidity_blend, seed, csize.X, csize.Z);

	//// Resolve nodes to be used
	INodeDefManager *ndef = emerge->ndef;

	c_stone                = ndef->getId("mapgen_stone");
	c_water_source         = ndef->getId("mapgen_water_source");
	c_lava_source          = ndef->getId("mapgen_lava_source");
	c_desert_stone         = ndef->getId("mapgen_desert_stone");
	c_ice                  = ndef->getId("mapgen_ice");
	c_sandstone            = ndef->getId("mapgen_sandstone");

	c_cobble               = ndef->getId("mapgen_cobble");
	c_stair_cobble         = ndef->getId("mapgen_stair_cobble");
	c_mossycobble          = ndef->getId("mapgen_mossycobble");
	c_sandstonebrick       = ndef->getId("mapgen_sandstonebrick");
	c_stair_sandstonebrick = ndef->getId("mapgen_stair_sandstonebrick");

	if (c_ice == CONTENT_IGNORE)
		c_ice = CONTENT_AIR;
	if (c_mossycobble == CONTENT_IGNORE)
		c_mossycobble = c_cobble;
	if (c_stair_cobble == CONTENT_IGNORE)
		c_stair_cobble = c_cobble;
	if (c_sandstonebrick == CONTENT_IGNORE)
		c_sandstonebrick = c_sandstone;
	if (c_stair_sandstonebrick == CONTENT_IGNORE)
		c_stair_sandstonebrick = c_sandstone;
}


MapgenV7::~MapgenV7()
{
	delete noise_terrain_base;
	delete noise_terrain_persist;
	delete noise_height_select;
	delete noise_terrain_alt;
	delete noise_filler_depth;
	delete noise_mount_height;
	delete noise_ridge_uwater;
	delete noise_mountain;
	delete noise_ridge;
	delete noise_cave1;
	delete noise_cave2;

	delete noise_heat;
	delete noise_humidity;
	delete noise_heat_blend;
	delete noise_humidity_blend;

	delete[] ridge_heightmap;
	delete[] heightmap;
	delete[] biomemap;
}


MapgenV7Params::MapgenV7Params()
{
	spflags = MGV7_MOUNTAINS | MGV7_RIDGES;

	np_terrain_base    = NoiseParams(4,    70,  v3f(600,  600,  600),  82341, 5, 0.6,  2.0);
	np_terrain_alt     = NoiseParams(4,    25,  v3f(600,  600,  600),  5934,  5, 0.6,  2.0);
	np_terrain_persist = NoiseParams(0.6,  0.1, v3f(2000, 2000, 2000), 539,   3, 0.6,  2.0);
	np_height_select   = NoiseParams(-12,  24,  v3f(500,  500,  500),  4213,  6, 0.7,  2.0);
	np_filler_depth    = NoiseParams(0,    1.2, v3f(150,  150,  150),  261,   3, 0.7,  2.0);
	np_mount_height    = NoiseParams(256,  112, v3f(1000, 1000, 1000), 72449, 3, 0.6,  2.0);
	np_ridge_uwater    = NoiseParams(0,    1,   v3f(1000, 1000, 1000), 85039, 5, 0.6,  2.0);
	np_mountain        = NoiseParams(-0.6, 1,   v3f(250,  350,  250),  5333,  5, 0.63, 2.0);
	np_ridge           = NoiseParams(0,    1,   v3f(100,  100,  100),  6467,  4, 0.75, 2.0);
	np_cave1           = NoiseParams(0,    12,  v3f(100,  100,  100),  52534, 4, 0.5,  2.0);
	np_cave2           = NoiseParams(0,    12,  v3f(100,  100,  100),  10325, 4, 0.5,  2.0);
}


void MapgenV7Params::readParams(const Settings *settings)
{
	settings->getFlagStrNoEx("mgv7_spflags", spflags, flagdesc_mapgen_v7);

	settings->getNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
	settings->getNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
	settings->getNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
	settings->getNoiseParams("mgv7_np_height_select",   np_height_select);
	settings->getNoiseParams("mgv7_np_filler_depth",    np_filler_depth);
	settings->getNoiseParams("mgv7_np_mount_height",    np_mount_height);
	settings->getNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater);
	settings->getNoiseParams("mgv7_np_mountain",        np_mountain);
	settings->getNoiseParams("mgv7_np_ridge",           np_ridge);
	settings->getNoiseParams("mgv7_np_cave1",           np_cave1);
	settings->getNoiseParams("mgv7_np_cave2",           np_cave2);
}


void MapgenV7Params::writeParams(Settings *settings) const
{
	settings->setFlagStr("mgv7_spflags", spflags, flagdesc_mapgen_v7, (u32)-1);

	settings->setNoiseParams("mgv7_np_terrain_base",    np_terrain_base);
	settings->setNoiseParams("mgv7_np_terrain_alt",     np_terrain_alt);
	settings->setNoiseParams("mgv7_np_terrain_persist", np_terrain_persist);
	settings->setNoiseParams("mgv7_np_height_select",   np_height_select);
	settings->setNoiseParams("mgv7_np_filler_depth",    np_filler_depth);
	settings->setNoiseParams("mgv7_np_mount_height",    np_mount_height);
	settings->setNoiseParams("mgv7_np_ridge_uwater",    np_ridge_uwater);
	settings->setNoiseParams("mgv7_np_mountain",        np_mountain);
	settings->setNoiseParams("mgv7_np_ridge",           np_ridge);
	settings->setNoiseParams("mgv7_np_cave1",           np_cave1);
	settings->setNoiseParams("mgv7_np_cave2",           np_cave2);
}


///////////////////////////////////////


int MapgenV7::getGroundLevelAtPoint(v2s16 p)
{
	// Base terrain calculation
	s16 y = baseTerrainLevelAtPoint(p.X, p.Y);

	// Ridge/river terrain calculation
	float width = 0.2;
	float uwatern = NoisePerlin2D(&noise_ridge_uwater->np, p.X, p.Y, seed) * 2;
	// actually computing the depth of the ridge is much more expensive;
	// if inside a river, simply guess
	if (fabs(uwatern) <= width)
		return water_level - 10;

	// Mountain terrain calculation
	int iters = 128; // don't even bother iterating more than 128 times..
	while (iters--) {
		//current point would have been air
		if (!getMountainTerrainAtPoint(p.X, y, p.Y))
			return y;

		y++;
	}

	return y;
}


void MapgenV7::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;
	//TimeTaker t("makeChunk");

	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);

	blockseed = getBlockSeed2(full_node_min, seed);

	// Make some noise
	calculateNoise();

	// Generate base terrain, mountains, and ridges with initial heightmaps
	s16 stone_surface_max_y = generateTerrain();

	// Create heightmap
	updateHeightmap(node_min, node_max);

	// Create biomemap at heightmap surface
	bmgr->calcBiomes(csize.X, csize.Z, noise_heat->result,
		noise_humidity->result, heightmap, biomemap);

	// Actually place the biome-specific nodes
	MgStoneType stone_type = generateBiomes(noise_heat->result, noise_humidity->result);

	if (flags & MG_CAVES)
		generateCaves(stone_surface_max_y);

	if ((flags & MG_DUNGEONS) && (stone_surface_max_y >= node_min.Y)) {
		DungeonParams dp;

		dp.np_rarity  = nparams_dungeon_rarity;
		dp.np_density = nparams_dungeon_density;
		dp.np_wetness = nparams_dungeon_wetness;
		dp.c_water    = c_water_source;
		if (stone_type == STONE) {
			dp.c_cobble = c_cobble;
			dp.c_moss   = c_mossycobble;
			dp.c_stair  = c_stair_cobble;

			dp.diagonal_dirs = false;
			dp.mossratio     = 3.0;
			dp.holesize      = v3s16(1, 2, 1);
			dp.roomsize      = v3s16(0, 0, 0);
			dp.notifytype    = GENNOTIFY_DUNGEON;
		} else if (stone_type == DESERT_STONE) {
			dp.c_cobble = c_desert_stone;
			dp.c_moss   = c_desert_stone;
			dp.c_stair  = c_desert_stone;

			dp.diagonal_dirs = true;
			dp.mossratio     = 0.0;
			dp.holesize      = v3s16(2, 3, 2);
			dp.roomsize      = v3s16(2, 5, 2);
			dp.notifytype    = GENNOTIFY_TEMPLE;
		} else if (stone_type == SANDSTONE) {
			dp.c_cobble = c_sandstonebrick;
			dp.c_moss   = c_sandstonebrick;
			dp.c_stair  = c_sandstonebrick;

			dp.diagonal_dirs = false;
			dp.mossratio     = 0.0;
			dp.holesize      = v3s16(2, 2, 2);
			dp.roomsize      = v3s16(2, 0, 2);
			dp.notifytype    = GENNOTIFY_DUNGEON;
		}

		DungeonGen dgen(this, &dp);
		dgen.generate(blockseed, full_node_min, full_node_max);
	}

	// Generate the registered decorations
	m_emerge->decomgr->placeAllDecos(this, blockseed, node_min, node_max);

	// Generate the registered ores
	m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max);

	// Sprinkle some dust on top after everything else was generated
	dustTopNodes();

	//printf("makeChunk: %dms\n", t.stop());

	updateLiquid(&data->transforming_liquid, full_node_min, full_node_max);

	if (flags & MG_LIGHT)
		calcLighting(node_min - v3s16(0, 1, 0), node_max + v3s16(0, 1, 0),
			full_node_min, full_node_max);

	//setLighting(node_min - v3s16(1, 0, 1) * MAP_BLOCKSIZE,
	//			node_max + v3s16(1, 0, 1) * MAP_BLOCKSIZE, 0xFF);

	this->generating = false;
}


void MapgenV7::calculateNoise()
{
	//TimeTaker t("calculateNoise", NULL, PRECISION_MICRO);
	int x = node_min.X;
	int y = node_min.Y - 1;
	int z = node_min.Z;

	noise_terrain_persist->perlinMap2D(x, z);
	float *persistmap = noise_terrain_persist->result;

	noise_terrain_base->perlinMap2D(x, z, persistmap);
	noise_terrain_alt->perlinMap2D(x, z, persistmap);
	noise_height_select->perlinMap2D(x, z);

	if (flags & MG_CAVES) {
		noise_cave1->perlinMap3D(x, y, z);
		noise_cave2->perlinMap3D(x, y, z);
	}

	if ((spflags & MGV7_RIDGES) && node_max.Y >= water_level) {
		noise_ridge->perlinMap3D(x, y, z);
		noise_ridge_uwater->perlinMap2D(x, z);
	}

	// Mountain noises are calculated in generateMountainTerrain()

	noise_filler_depth->perlinMap2D(x, z);
	noise_heat->perlinMap2D(x, z);
	noise_humidity->perlinMap2D(x, z);
	noise_heat_blend->perlinMap2D(x, z);
	noise_humidity_blend->perlinMap2D(x, z);

	for (s32 i = 0; i < csize.X * csize.Z; i++) {
		noise_heat->result[i] += noise_heat_blend->result[i];
		noise_humidity->result[i] += noise_humidity_blend->result[i];
	}

	heatmap = noise_heat->result;
	humidmap = noise_humidity->result;
	//printf("calculateNoise: %dus\n", t.stop());
}


Biome *MapgenV7::getBiomeAtPoint(v3s16 p)
{
	float heat = NoisePerlin2D(&noise_heat->np, p.X, p.Z, seed) +
		NoisePerlin2D(&noise_heat_blend->np, p.X, p.Z, seed);
	float humidity = NoisePerlin2D(&noise_humidity->np, p.X, p.Z, seed) +
		NoisePerlin2D(&noise_humidity_blend->np, p.X, p.Z, seed);
	s16 groundlevel = baseTerrainLevelAtPoint(p.X, p.Z);

	return bmgr->getBiome(heat, humidity, groundlevel);
}

//needs to be updated
float MapgenV7::baseTerrainLevelAtPoint(s16 x, s16 z)
{
	float hselect = NoisePerlin2D(&noise_height_select->np, x, z, seed);
	hselect = rangelim(hselect, 0.0, 1.0);

	float persist = NoisePerlin2D(&noise_terrain_persist->np, x, z, seed);

	noise_terrain_base->np.persist = persist;
	float height_base = NoisePerlin2D(&noise_terrain_base->np, x, z, seed);

	noise_terrain_alt->np.persist = persist;
	float height_alt = NoisePerlin2D(&noise_terrain_alt->np, x, z, seed);

	if (height_alt > height_base)
		return height_alt;

	return (height_base * hselect) + (height_alt * (1.0 - hselect));
}


float MapgenV7::baseTerrainLevelFromMap(int index)
{
	float hselect     = rangelim(noise_height_select->result[index], 0.0, 1.0);
	float height_base = noise_terrain_base->result[index];
	float height_alt  = noise_terrain_alt->result[index];

	if (height_alt > height_base)
		return height_alt;

	return (height_base * hselect) + (height_alt * (1.0 - hselect));
}


bool MapgenV7::getMountainTerrainAtPoint(s16 x, s16 y, s16 z)
{
	float mnt_h_n = NoisePerlin2D(&noise_mount_height->np, x, z, seed);
	float density_gradient = -((float)y / mnt_h_n);
	float mnt_n = NoisePerlin3D(&noise_mountain->np, x, y, z, seed);

	return mnt_n + density_gradient >= 0.0;
}


bool MapgenV7::getMountainTerrainFromMap(int idx_xyz, int idx_xz, s16 y)
{
	float mounthn = noise_mount_height->result[idx_xz];
	float density_gradient = -((float)y / mounthn);
	float mountn = noise_mountain->result[idx_xyz];

	return mountn + density_gradient >= 0.0;
}


#if 0
void MapgenV7::carveRivers() {
	MapNode n_air(CONTENT_AIR), n_water_source(c_water_source);
	MapNode n_stone(c_stone);
	u32 index = 0;

	int river_depth = 4;

	for (s16 z = node_min.Z; z <= node_max.Z; z++)
	for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
		float terrain_mod  = noise_terrain_mod->result[index];
		NoiseParams *np = noise_terrain_river->np;
		np.persist = noise_terrain_persist->result[index];
		float terrain_river = NoisePerlin2DNoTxfm(np, x, z, seed);
		float height = terrain_river * (1 - abs(terrain_mod)) *
						noise_terrain_river->np.scale;
		height = log(height * height); //log(h^3) is pretty interesting for terrain

		s16 y = heightmap[index];
		if (height < 1.0 && y > river_depth &&
			y - river_depth >= node_min.Y && y <= node_max.Y) {

			for (s16 ry = y; ry != y - river_depth; ry--) {
				u32 vi = vm->m_area.index(x, ry, z);
				vm->m_data[vi] = n_air;
			}

			u32 vi = vm->m_area.index(x, y - river_depth, z);
			vm->m_data[vi] = n_water_source;
		}
	}
}
#endif


int MapgenV7::generateTerrain()
{
	s16 stone_surface_min_y;
	s16 stone_surface_max_y;

	generateBaseTerrain(&stone_surface_min_y, &stone_surface_max_y);

	if ((spflags & MGV7_MOUNTAINS) && stone_surface_min_y < node_max.Y)
		stone_surface_max_y = generateMountainTerrain(stone_surface_max_y);

	if (spflags & MGV7_RIDGES)
		generateRidgeTerrain();

	return stone_surface_max_y;
}


void MapgenV7::generateBaseTerrain(s16 *stone_surface_min_y, s16 *stone_surface_max_y)
{
	MapNode n_air(CONTENT_AIR);
	MapNode n_stone(c_stone);
	MapNode n_water(c_water_source);

	v3s16 em = vm->m_area.getExtent();
	s16 surface_min_y = MAX_MAP_GENERATION_LIMIT;
	s16 surface_max_y = -MAX_MAP_GENERATION_LIMIT;
	u32 index = 0;

	for (s16 z = node_min.Z; z <= node_max.Z; z++)
	for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
		float surface_height = baseTerrainLevelFromMap(index);
		s16 surface_y = (s16)surface_height;

		heightmap[index]       = surface_y;
		ridge_heightmap[index] = surface_y;

		if (surface_y < surface_min_y)
			surface_min_y = surface_y;

		if (surface_y > surface_max_y)
			surface_max_y = surface_y;

		u32 i = vm->m_area.index(x, node_min.Y - 1, z);
		for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
			if (vm->m_data[i].getContent() == CONTENT_IGNORE) {
				if (y <= surface_y)
					vm->m_data[i] = n_stone;
				else if (y <= water_level)
					vm->m_data[i] = n_water;
				else
					vm->m_data[i] = n_air;
			}
			vm->m_area.add_y(em, i, 1);
		}
	}

	*stone_surface_min_y = surface_min_y;
	*stone_surface_max_y = surface_max_y;
}


int MapgenV7::generateMountainTerrain(s16 ymax)
{
	noise_mountain->perlinMap3D(node_min.X, node_min.Y - 1, node_min.Z);
	noise_mount_height->perlinMap2D(node_min.X, node_min.Z);

	MapNode n_stone(c_stone);
	u32 j = 0;

	for (s16 z = node_min.Z; z <= node_max.Z; z++)
	for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
		u32 vi = vm->m_area.index(node_min.X, y, z);
		for (s16 x = node_min.X; x <= node_max.X; x++) {
			int index = (z - node_min.Z) * csize.X + (x - node_min.X);
			content_t c = vm->m_data[vi].getContent();

			if (getMountainTerrainFromMap(j, index, y)
					&& (c == CONTENT_AIR || c == c_water_source)) {
				vm->m_data[vi] = n_stone;
				if (y > ymax)
					ymax = y;
			}

			vi++;
			j++;
		}
	}

	return ymax;
}


void MapgenV7::generateRidgeTerrain()
{
	if (node_max.Y < water_level)
		return;

	MapNode n_water(c_water_source);
	MapNode n_air(CONTENT_AIR);
	u32 index = 0;
	float width = 0.2; // TODO: figure out acceptable perlin noise values

	for (s16 z = node_min.Z; z <= node_max.Z; z++)
	for (s16 y = node_min.Y - 1; y <= node_max.Y + 1; y++) {
		u32 vi = vm->m_area.index(node_min.X, y, z);
		for (s16 x = node_min.X; x <= node_max.X; x++, index++, vi++) {
			int j = (z - node_min.Z) * csize.X + (x - node_min.X);

			if (heightmap[j] < water_level - 16)
				continue;

			float uwatern = noise_ridge_uwater->result[j] * 2;
			if (fabs(uwatern) > width)
				continue;

			float altitude = y - water_level;
			float height_mod = (altitude + 17) / 2.5;
			float width_mod  = width - fabs(uwatern);
			float nridge = noise_ridge->result[index] * MYMAX(altitude, 0) / 7.0;

			if (nridge + width_mod * height_mod < 0.6)
				continue;

			if (y < ridge_heightmap[j])
				ridge_heightmap[j] = y - 1;

			vm->m_data[vi] = (y > water_level) ? n_air : n_water;
		}
	}
}


MgStoneType MapgenV7::generateBiomes(float *heat_map, float *humidity_map)
{
	v3s16 em = vm->m_area.getExtent();
	u32 index = 0;
	MgStoneType stone_type = STONE;

	for (s16 z = node_min.Z; z <= node_max.Z; z++)
	for (s16 x = node_min.X; x <= node_max.X; x++, index++) {
		Biome *biome = NULL;
		u16 depth_top = 0;
		u16 base_filler = 0;
		u16 depth_water_top = 0;
		u32 vi = vm->m_area.index(x, node_max.Y, z);

		// Check node at base of mapchunk above, either a node of a previously
		// generated mapchunk or if not, a node of overgenerated base terrain.
		content_t c_above = vm->m_data[vi + em.X].getContent();
		bool air_above = c_above == CONTENT_AIR;
		bool water_above = c_above == c_water_source;

		// If there is air or water above enable top/filler placement, otherwise force
		// nplaced to stone level by setting a number exceeding any possible filler depth.
		u16 nplaced = (air_above || water_above) ? 0 : (u16)-1;

		for (s16 y = node_max.Y; y >= node_min.Y; y--) {
			content_t c = vm->m_data[vi].getContent();

			// Biome is recalculated each time an upper surface is detected while
			// working down a column. The selected biome then remains in effect for
			// all nodes below until the next surface and biome recalculation.
			// Biome is recalculated: