mirror of git://repo.or.cz/rocks.git
146 lines
4.1 KiB
Plaintext
146 lines
4.1 KiB
Plaintext
Geological layer generator for Minetest "rocks" {wip}
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=============
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Aim of this mod is to replace all generic stone (default:stone) and
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generate underground layers of different rocks.
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Features
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--------
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* layers of different rocks: sort of working
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* ore veins: being added
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* extensibility, api: changed million times
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** Work in progress! **
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* git clone git://repo.or.cz/rocks.git ([show](http://repo.or.cz/rocks.git/))
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* (old) Git clone: [https](https://gitorious.org/mt/rocks.git)
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* Forum [post](https://forum.minetest.net/viewtopic.php?f=9&t=11779)
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This mod nor minetest_game/default do not define meaningful biomes.
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So if you do not want unlimited grassland I suggest installing the
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[Paramat's biomesdev mod](https://github.com/paramat/biomesdev) and adding
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"rocks?" to depends.txt file inside the biomesdev folder. This is needed,
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becouse "rocks" overrides the standard biome registration callback to patch
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in it's own sedimentary rocks.
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Screenshots
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-----------
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all were out of date
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License
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-------
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* My Code: GNU General Public License v2 or higher.
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* Media: see txt files in the texture folder
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* stated in the corresponding file
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Documentation
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-------------
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How the underground is generated: *todo*.
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Mod has been rewritten, so no doc yet.
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The sedimentary layer
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-------------
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Is implemented by modifiing MGv7 biomes to use rocks's sedimentary rocks.
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This means that you need mapgen v7 enabled. I also suggest enabling caves
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and dungeons, as they are cool.
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Soil is normlly 50-70 cm deep in real life, so I made soil (dirt) only 1
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block thick. Under this thin layer of dirt an sedimentary layer is located.
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In RL, there is clay and other stuff.
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There are various types of sedimentary rock. They are generated according
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to 2D noises described below.
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types = Clastic, Biochemical, Chemical, Vulcano/Other
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| X | tp2<0.76 | tp2>0.7 |
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|--------|--------------|--------|
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| tp1<0.2 | Clastic | Chemical |
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| tp1>0.2 | BioChemical | Vu/Ot |
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- Noise_tp1( 50)= type1
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- Noise_tp2( 70)= type2
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- Noise_vc(100)= particle size
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- Noise_sp(220)= pressue/ hardness
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I. 2D: fast, acceptable imho <-(used)
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II. 3D: nice
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### Clastic sediments
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Made from large or small particles. Either loose or bound into stones.
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(particle size: top-large botom-small)
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(hargness: loose -> solid)
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1. gravel -> conglomerate
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2. sand -> sandstone
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3. mudstone
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4. clay -> claystone -> slate
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### BioChemical sediments
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Made from acient plants and creatures that died long ago and turned into rock.
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Noise_vs: kind of sediment: (top) oil, Limestone, other, carbon-based
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Noise_sp: low quality -> high quality
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1. oil: ?
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2. Limestone
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3. other: fosfates, silicates, hornfels (unimp)
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4. carbon-based: Lignite -> Coal -> Anthracite
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### Chemical sediments
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Created by chemical or physics/chemical reactions.
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- Evaporites (unimp)
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### Vulanic and extraterrestrial sediments
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???
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The Igenous layer
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--------------
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Default stone is aliased to basalt, but for some reason the alias is not
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working so please treat stone as basalt until I find way to fix it.
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Everything below sedimentary and (unimp) metamorphic layer is of igneous origin. Primary rock is basalt. But about half of basalt is replaced by granite. Some smaller fraction (like 20%) is then replaced by diorite and gabbro.
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These are the primary rocks, and more should come.
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### Mineral distribution
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Mineral ore is placed only in nodes of correct rock and only if the region
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for the ore is right. These "mineral biomes" can and do overlap and change
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every like 100 nodes. Following regions are defined:
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| Region | minerals
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|---------|----------
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| Copper | Chalcopyrite, Malachyte
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| Pb/Zn | Sphalerite, Galena
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| Iron | Magnetite
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### Skarn deposits
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Are larg-ish (15-20m) blobs of skarn stone. They spawn only in granite and
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limestone. Copper, Lead, Zinc and Iron ores often enrich the skarn stone.
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Some deposits may (unimp) contain considerable amounts of Molybenium,
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Uranium and Wolfram ores.
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Concentration of the minerals is quite high, as to regard the player for
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finding a not-so-common skarn vein.
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### Pegmatite veis
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Spawn only in granite. Are bit larger than skarn veins. Contain minerals
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like skarn and more exotic minerals.
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