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32
README.md
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@ -1,10 +1,27 @@
Nether Mod for Minetest, with Portals API.
# Nether Mod for Minetest, with Portals API.
Enables Nether portals to be built, opening a gateway between the surface
realm and one of lava and netherrack, with rumors of a passageway to a great
magma ocean.
To view the options provided by this mod, see settingtypes.txt or
go to "Settings"->"All Settings"->"Mods"->"nether" in the game.
A Nether portal is built as a rectangular vertical frame of obsidian, 4 blocks
wide and 5 blocks high. Once constructed, a Mese crystal fragment can be
right-click/used on the frame to activate it.
## Modders and game designers
See portal_api.txt for how to create custom portals to your own realms.
See settingtypes.txt or go to "Settings"->"All Settings"->"Mods"->"nether"
in the game to view the options provided by this mod.
This mod provides Nether basalts (natural, hewn, and chiseled) as nodes which
require a player to journey to the magma ocean to obtain, so these can be used
for gating progression through a game. For example, a portal to another realm
might need to be constructed from basalt, thus requiring a journey through
the nether first, or basalt might be a crafting ingredient required to reach
a particular branch of the tech-tree.
## License of source code:
@ -36,17 +53,20 @@ SOFTWARE.
* `nether_portal_ignite.ogg` is a derivative of "Flame Ignition" by [hykenfreak](https://freesound.org/people/hykenfreak), used under CC BY 3.0. "Nether Portal ignite" is licensed under CC BY 3.0 by Treer.
### [Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)](https://creativecommons.org/licenses/by-sa/4.0/)
* `nether_basalt`* (files starting with "nether_basalt"): Treer, 2020
* `nether_book_`* (files starting with "nether_book"): Treer, 2019-2020
* `nether_fumarole.ogg`: Treer, 2020
* `nether_lava_bubble`* (files starting with "nether_lava_bubble"): Treer, 2020
* `nether_lava_crust_animated.png`: Treer, 2019-2020
* `nether_particle_anim`* (files starting with "nether_particle_anim"): Treer, 2019
* `nether_portal_ignition_failure.ogg`: Treer, 2019
* `nether_smoke_puff.png`: Treer, 2020
### [Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)](http://creativecommons.org/licenses/by-sa/3.0/)
* `nether_glowstone.png`: BlockMen
* `nether_glowstone`* (files starting with "nether_glowstone"): BlockMen
* `nether_nether_ingot.png` & `nether_nether_lump.png`: color adjusted versions from "[default](https://github.com/minetest/minetest_game/tree/master/mods/default)" mod, originally by Gambit
* `nether_portal.png`: [Extex101](https://github.com/Extex101), 2020
* `nether_rack.png`: Zeg9
* `nether_rack`* (files starting with "nether_rack"): Zeg9
* `nether_tool_`* (files starting with "nether_tool_"): color adjusted versions from "[default](https://github.com/minetest/minetest_game/tree/master/mods/default)" mod, originals by BlockMen
All other media: Copyright © 2013 PilzAdam, licensed under CC BY-SA 3.0 by PilzAdam.

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crafts.lua Normal file
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@ -0,0 +1,64 @@
--[[
Copyright (C) 2013 PilzAdam
Copyright (C) 2020 lortas
Copyright (C) 2020 Treer
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
]]--
minetest.register_craft({
output = "nether:brick 4",
recipe = {
{"nether:rack", "nether:rack"},
{"nether:rack", "nether:rack"},
}
})
minetest.register_craft({
output = "nether:fence_nether_brick 6",
recipe = {
{"nether:brick", "nether:brick", "nether:brick"},
{"nether:brick", "nether:brick", "nether:brick"},
},
})
minetest.register_craft({
output = "nether:brick_compressed",
recipe = {
{"nether:brick","nether:brick","nether:brick"},
{"nether:brick","nether:brick","nether:brick"},
{"nether:brick","nether:brick","nether:brick"},
}
})
minetest.register_craft({
output = "nether:basalt_hewn",
type = "shapeless",
recipe = {
"nether:basalt",
"nether:basalt",
},
})
minetest.register_craft({
output = "nether:basalt_chiselled 4",
recipe = {
{"nether:basalt_hewn", "nether:basalt_hewn"},
{"nether:basalt_hewn", "nether:basalt_hewn"}
}
})
-- See tools.lua for tools related crafting

10
depends.txt
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@ -1,8 +1,8 @@
stairs
default
moreblocks?
mesecons?
loot?
dungeon_loot?
stairs
doc_basics?
dungeon_loot?
fire?
loot?
mesecons?
moreblocks?

16
init.lua
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@ -116,6 +116,7 @@ end
dofile(nether.path .. "/portal_api.lua")
dofile(nether.path .. "/nodes.lua")
dofile(nether.path .. "/tools.lua")
dofile(nether.path .. "/crafts.lua")
if nether.NETHER_REALM_ENABLED then
if nether.useBiomes then
dofile(nether.path .. "/mapgen.lua")
@ -227,3 +228,18 @@ The expedition parties have found no diamonds or gold, and after an experienced
})
end
-- Play bubbling lava sounds if player killed by lava
minetest.register_on_dieplayer(
function(player, reason)
if reason.node ~= nil and minetest.get_node_group(reason.node, "lava") > 0 or reason.node == "nether:lava_crust" then
minetest.sound_play(
"nether_lava_bubble",
-- this sample was encoded at 3x speed to reduce .ogg file size
-- at the expense of higher frequencies, so pitch it down ~3x
{to_player = player:get_player_name(), pitch = 0.3, gain = 0.8}
)
end
end
)

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locale/nether.fr.tr
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# textdomain: nether
# Translation FR by Louis Royer
### init.lua ###
Construction requires 14 blocks of obsidian, which we found deep underground where water had solidified molten rock. The finished frame is four blocks wide, five blocks high, and stands vertically, like a doorway.@n@nThis opens to a truly hellish place, though for small mercies the air there is still breathable. There is an intriguing dimensional mismatch happening between this realm and ours, as after opening the second portal into it we observed that 10 strides taken in the Nether appear to be an equivalent of @1 in the natural world.@n@nThe expedition parties have found no diamonds or gold, and after an experienced search party failed to return from the trail of a missing expedition party, I must conclude this is a dangerous place.=Cette construction nécessite 14 blocs d’obsidienne, qui peut être trouvée profondément sous terre, là où l’eau a solidifié de la roche fondue. Une fois terminé, le cadre fait quatre blocs de large, cinq blocs de haut, et se tient verticalement comme une porte.@n@nElle ouvre sur un lieu vraiment infernal, mais on peut s’estimer heureux que l’air y soit quand même respirable. Il y a un décalage dimensionnel intrigant entre ce monde et le nôtre, car après avoir ouvert un deuxième portail, nous avons observé que 10 pas effectués dans le Nether semblent être l’équivalent de @1 dans notre monde.@n@nLes membres de l’expédition n’ontr trouvé ni diamants ni or, et après qu’un groupe de recheche expérimenté n’ait pas réussi à retrouver la piste d’un membre de l’expédition disparu, je n’ai d’autre choix que de conclure que cet endroit est trop dangereux pour nous.
### init.lua ###
### nodes.lua ###
Nether Portal=Portail du Nether
### nodes.lua ###
Glowstone=Pierre lumineuse
Inner Nether Stair=Escalier intérieur du Nether
Nether Brick=Brique du Nether
Nether Brick Fence=Barrière en briques du Nether
Nether Slab=Dalle du Nether
Nether Stair=Escalier du Nether
Netherrack=Roche du Nether
Nethersand=Sable du Nether
Outer Nether Stair=Escalier extérieur du Nether
### portal_api.lua ###
@n@nThe key to opening such a doorway is to strike the frame with a @1, at which point the very air inside begins to crackle and glow.=@n@nLa méthode pour ouvrir une telle porte est de frapper son cadre avec un @1, jusqu’à ce que tout l’air à l’intérieur commence à crépiter et briller.
A definitive guide to Rifts and Portals=Un guide détaillé des failles et des portails
A guidebook for how to build portals to other realms. It can sometimes be found in dungeon chests, however a copy of this book is not needed as its contents are included in this Encyclopedia.=Un guide sur comment construire des portails vers d’autres mondes. Il peut parfois être trouvé dans des coffres de dongeons, cependant la copie de ce livre n’est pas nécessaire puisque son contenu est inclus dans l’encyclopédie.
Book of Portals=Livre des portails
Building Portals=Construire des portails
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only @1 can I confirm as being more than merely stories.=Après tous mes voyages, et le temps passé dans les Grandes Bibliothèques, je ne manque pas de légendes sur les portes surnaturelles qui, dit-on s’ouvrent vers d’autres mondes, mais seul @1 peut confirmer que ce sont plus que de simples histoires.
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only one can I confirm as being more than merely a story.=Après tous mes voyages, et le temps passé dans les Grandes Bibliothèques, je ne manque pas de légendes sur les portes surnaturelles qui, dit-on s’ouvrent vers d’autres mondes, mais seul une personne peut confirmer que ce sont plus que de simples histoires.
Portal wormhole=Vortex du portail
Portals to other realms can be opened by building a frame in the right shape with the right blocks, then using an item to activate it. A local copy of the guidebook to portals is published below.@n---@n@n=Les portails vers d’autres mondes peuvent être ouvert en construisant un cadre de la bonne forme avec les bons blocs, puis en utilisant un objet pour l’activer. Une copie du guide des portails est ci-dessous.@n---@n@n
Refer: "Help" > "Basics" > "Building Portals"=Voir : Aide > Bases > Construire des portails
Untitled portal=Portail sans nom
We know almost nothing about this portal=Nous ne savons presque rien sur les portails
### portal_examples.lua ###
Floatlands Portal=Portail du monde flottant
Requiring 16 blocks of tin and constructed in a circular fashion, a finished frame is seven blocks wide, seven blocks high, and stands vertically like a doorway.@n@nThese travel a distance along the ground, and even when constructed deep underground will link back up to the surface. They appear to favor a strange direction, with the exit portal linking back only for as long as the portal stays open — attempting to reopen a portal from the exit doorway leads to a new destination along this favored direction. It has stymied our ability to study the behavior of these portals because without constructing dual portals and keeping both open it's hard to step through more than one and still be able to return home.@n@nDue to such difficulties, we never learned what determines the direction and distance where the matching twin portal will appear, and I have lost my friend and protégé. In cavalier youth and with little more than a rucksack, Coudreau has decided to follow the chain as far as it goes, and has not been seen since. Coudreau believes it works in epicycles, but I am not convinced. Still, I cling to the hope that one day the portal will open and Coudreau will step out from whichever place leads to this one, perhaps with an epic tale to tell.=Nécessite 16 blocs d’étain placés de manière circulaire, le cadre final fait sept blocs de large, sept blocs de haut, et se tient verticalement comme une porte.@n@nIls permettent de voyager une distance sous le sol et se relieent à la surface même s’ils sont construits profondément sous terre. Ils ont l’air de préférer une direction étrange, avec le portail de sortie ne se reliant au portail d’entrée que tant qu’ils restent tous deux ouverts – tenter de réouvrir le portail de sortie mènera à une nouvelle destination dans cette direction privilégiée.Cela a entravé notre capacité à étudier le comportement de ces portails, car sans la construction de doubles portails et en gardant les deux ouverts, il est difficile d'en traverser plus d'un et de pouvoir rentrer chez soi.@n@nEn raison de ces difficultés, nous n'avons jamais appris ce qui détermine la direction et la distance à laquelle le portail jumeau correspondant apparaîtra, et j’ai perdu mon ami et mon protégé. Dans sa jeunesse cavalière et avec à peine plus qu'un sac à dos, Coudreau a décidé de suivre la chaîne jusqu'au bout, et n'a pas été vu depuis. Coudreau croit qu'elle fonctionne sur les épicycles, mais je n'en suis pas convaincu. Je m'accroche néanmoins à l'espoir qu'un jour le portail s'ouvrira et que Coudreau sortira de l'endroit qui mène à celui-ci, peut-être avec un récit épique à raconter.
Requiring 21 blocks of ice, and constructed in the shape of a 3 × 3 platform with walls, or like a bowl. A finished platform is 2 blocks high, and 5 blocks wide at the widest in both directions.@n@nThis portal is different to the others, rather than acting akin to a doorway it appears to the eye more like a small pool of water which can be stepped into. Upon setting foot in the portal we found ourselves at a tremendous altitude.@1=Nécessite 21 blocs de glace placés pour former une plateforme de 3 × 3 avec des murs, ou comme un bol. La plateforme finale fait 2 blocs de haut, et 5 blocs de large à sa largeur maximale dans les deux directions.@n@nCe portail est différent des autres, au lieu de ressembler à une porte, il ressemble plus à un petit bassin d’eau dans lequel on peut entrer. En mettant les pieds dans le portail, nous nous sommes retrouvés à une altitude énorme.@1
Surface Portal=Portail de surface
There is a floating land of hills and forests up there, over the edges of which is a perilous drop all the way back down to sea level. We have not found how far these pristine lands extend. I have half a mind to retire there one day.=Il y a là un monde flottant remplis de collines et de forêts, sur les bords duquel se trouve une chute périlleuse jusqu'au niveau de la mer. Nous n'avons pas encore trouvé jusqu'où s'étendent ces terres vierges. J'ai à moitié envie de m'y retirer un jour.
# textdomain: nether
# Translation FR by Louis Royer
### init.lua ###
Construction requires 14 blocks of obsidian, which we found deep underground where water had solidified molten rock. The finished frame is four blocks wide, five blocks high, and stands vertically, like a doorway.@n@nThis opens to a truly hellish place, though for small mercies the air there is still breathable. There is an intriguing dimensional mismatch happening between this realm and ours, as after opening the second portal into it we observed that 10 strides taken in the Nether appear to be an equivalent of @1 in the natural world.@n@nThe expedition parties have found no diamonds or gold, and after an experienced search party failed to return from the trail of a missing expedition party, I must conclude this is a dangerous place.=Cette construction nécessite 14 blocs d’obsidienne, qui peut être trouvée profondément sous terre, là où l’eau a solidifié de la roche fondue. Une fois terminé, le cadre fait quatre blocs de large, cinq blocs de haut, et se tient verticalement comme une porte.@n@nElle ouvre sur un lieu vraiment infernal, mais on peut s’estimer heureux que l’air y soit quand même respirable. Il y a un décalage dimensionnel intrigant entre ce monde et le nôtre, car après avoir ouvert un deuxième portail, nous avons observé que 10 pas effectués dans le Nether semblent être l’équivalent de @1 dans notre monde.@n@nLes membres de l’expédition n’ontr trouvé ni diamants ni or, et après qu’un groupe de recheche expérimenté n’ait pas réussi à retrouver la piste d’un membre de l’expédition disparu, je n’ai d’autre choix que de conclure que cet endroit est trop dangereux pour nous.
### init.lua ###
### nodes.lua ###
Nether Portal=Portail du Nether
### nodes.lua ###
=
A finely finished block of solid Nether Basalt.=
A rough cut solid block of Nether Basalt.=
A thin crust of cooled lava with liquid lava beneath=
A vent in the earth emitting steam and gas=
Can be repurposed to provide puffs of smoke in a chimney=
Chiselled Basalt=
Columns of dark basalt found only in magma oceans deep within the Nether.=
Compressed Netherbrick=
Cracked Nether Brick=
Deep Glowstone=
Deep Netherrack=
Fumarolic Chimney=
Fumarolic Chimney Corner=
Fumarolic Chimney Slab=
Glowstone=Pierre lumineuse
Hewn Basalt=
Inner Nether Stair=Escalier intérieur du Nether
Lava Crust=
Lava crust is strong enough to walk on, but still hot enough to inflict burns.=
Nether Basalt=
Nether Brick=Brique du Nether
Nether Brick Fence=Barrière en briques du Nether
Nether Slab=Dalle du Nether
Nether Stair=Escalier du Nether
Netherrack=Roche du Nether
Netherrack from deep in the mantle=
Netherrack stair=
Nethersand=Sable du Nether
Outer Nether Stair=Escalier extérieur du Nether
Portal=
### portal_api.lua ###
@n@nThe key to opening such a doorway is to strike the frame with a @1, at which point the very air inside begins to crackle and glow.=@n@nLa méthode pour ouvrir une telle porte est de frapper son cadre avec un @1, jusqu’à ce que tout l’air à l’intérieur commence à crépiter et briller.
A definitive guide to Rifts and Portals=Un guide détaillé des failles et des portails
A guidebook for how to build portals to other realms. It can sometimes be found in dungeon chests, however a copy of this book is not needed as its contents are included in this Encyclopedia.=Un guide sur comment construire des portails vers d’autres mondes. Il peut parfois être trouvé dans des coffres de dongeons, cependant la copie de ce livre n’est pas nécessaire puisque son contenu est inclus dans l’encyclopédie.
Book of Portals=Livre des portails
Building Portals=Construire des portails
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only @1 can I confirm as being more than merely stories.=Après tous mes voyages, et le temps passé dans les Grandes Bibliothèques, je ne manque pas de légendes sur les portes surnaturelles qui, dit-on s’ouvrent vers d’autres mondes, mais seul @1 peut confirmer que ce sont plus que de simples histoires.
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only one can I confirm as being more than merely a story.=Après tous mes voyages, et le temps passé dans les Grandes Bibliothèques, je ne manque pas de légendes sur les portes surnaturelles qui, dit-on s’ouvrent vers d’autres mondes, mais seul une personne peut confirmer que ce sont plus que de simples histoires.
Mysterious forces prevented you from opening that portal. Please try another location=
Portal wormhole=Vortex du portail
Portals to other realms can be opened by building a frame in the right shape with the right blocks, then using an item to activate it. A local copy of the guidebook to portals is published below.@n---@n@n=Les portails vers d’autres mondes peuvent être ouvert en construisant un cadre de la bonne forme avec les bons blocs, puis en utilisant un objet pour l’activer. Une copie du guide des portails est ci-dessous.@n---@n@n
Refer: "Help" > "Basics" > "Building Portals"=Voir : Aide > Bases > Construire des portails
Untitled portal=Portail sans nom
We know almost nothing about this portal=Nous ne savons presque rien sur les portails
### portal_examples.lua ###
Floatlands Portal=Portail du monde flottant
Requiring 16 blocks of tin and constructed in a circular fashion, a finished frame is seven blocks wide, seven blocks high, and stands vertically like a doorway.@n@nThese travel a distance along the ground, and even when constructed deep underground will link back up to the surface. They appear to favor a strange direction, with the exit portal linking back only for as long as the portal stays open — attempting to reopen a portal from the exit doorway leads to a new destination along this favored direction. It has stymied our ability to study the behavior of these portals because without constructing dual portals and keeping both open it's hard to step through more than one and still be able to return home.@n@nDue to such difficulties, we never learned what determines the direction and distance where the matching twin portal will appear, and I have lost my friend and protégé. In cavalier youth and with little more than a rucksack, Coudreau has decided to follow the chain as far as it goes, and has not been seen since. Coudreau believes it works in epicycles, but I am not convinced. Still, I cling to the hope that one day the portal will open and Coudreau will step out from whichever place leads to this one, perhaps with an epic tale to tell.=Nécessite 16 blocs d’étain placés de manière circulaire, le cadre final fait sept blocs de large, sept blocs de haut, et se tient verticalement comme une porte.@n@nIls permettent de voyager une distance sous le sol et se relieent à la surface même s’ils sont construits profondément sous terre. Ils ont l’air de préférer une direction étrange, avec le portail de sortie ne se reliant au portail d’entrée que tant qu’ils restent tous deux ouverts – tenter de réouvrir le portail de sortie mènera à une nouvelle destination dans cette direction privilégiée.Cela a entravé notre capacité à étudier le comportement de ces portails, car sans la construction de doubles portails et en gardant les deux ouverts, il est difficile d'en traverser plus d'un et de pouvoir rentrer chez soi.@n@nEn raison de ces difficultés, nous n'avons jamais appris ce qui détermine la direction et la distance à laquelle le portail jumeau correspondant apparaîtra, et j’ai perdu mon ami et mon protégé. Dans sa jeunesse cavalière et avec à peine plus qu'un sac à dos, Coudreau a décidé de suivre la chaîne jusqu'au bout, et n'a pas été vu depuis. Coudreau croit qu'elle fonctionne sur les épicycles, mais je n'en suis pas convaincu. Je m'accroche néanmoins à l'espoir qu'un jour le portail s'ouvrira et que Coudreau sortira de l'endroit qui mène à celui-ci, peut-être avec un récit épique à raconter.
Requiring 21 blocks of ice, and constructed in the shape of a 3 × 3 platform with walls, or like a bowl. A finished platform is 2 blocks high, and 5 blocks wide at the widest in both directions.@n@nThis portal is different to the others, rather than acting akin to a doorway it appears to the eye more like a small pool of water which can be stepped into. Upon setting foot in the portal we found ourselves at a tremendous altitude.@1=Nécessite 21 blocs de glace placés pour former une plateforme de 3 × 3 avec des murs, ou comme un bol. La plateforme finale fait 2 blocs de haut, et 5 blocs de large à sa largeur maximale dans les deux directions.@n@nCe portail est différent des autres, au lieu de ressembler à une porte, il ressemble plus à un petit bassin d’eau dans lequel on peut entrer. En mettant les pieds dans le portail, nous nous sommes retrouvés à une altitude énorme.@1
Surface Portal=Portail de surface
There is a floating land of hills and forests up there, over the edges of which is a perilous drop all the way back down to sea level. We have not found how far these pristine lands extend. I have half a mind to retire there one day.=Il y a là un monde flottant remplis de collines et de forêts, sur les bords duquel se trouve une chute périlleuse jusqu'au niveau de la mer. Nous n'avons pas encore trouvé jusqu'où s'étendent ces terres vierges. J'ai à moitié envie de m'y retirer un jour.
### tools.lua ###
Nether Axe=
Nether Ingot=
Nether Lump=
Nether Pickaxe=
Nether Shovel=
Nether Sword=

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locale/template.txt
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@ -1,61 +1,98 @@
# textdomain: nether
### init.lua ###
Construction requires 14 blocks of obsidian, which we found deep underground where water had solidified molten rock. The finished frame is four blocks wide, five blocks high, and stands vertically, like a doorway.@n@nThis opens to a truly hellish place, though for small mercies the air there is still breathable. There is an intriguing dimensional mismatch happening between this realm and ours, as after opening the second portal into it we observed that 10 strides taken in the Nether appear to be an equivalent of @1 in the natural world.@n@nThe expedition parties have found no diamonds or gold, and after an experienced search party failed to return from the trail of a missing expedition party, I must conclude this is a dangerous place.=
### init.lua ###
### nodes.lua ###
Nether Portal=
### nodes.lua ###
Glowstone=
Inner Nether Stair=
Nether Brick=
Nether Brick Fence=
Nether Slab=
Nether Stair=
Netherrack=
Nethersand=
Outer Nether Stair=
### portal_api.lua ###
@n@nThe key to opening such a doorway is to strike the frame with a @1, at which point the very air inside begins to crackle and glow.=
A definitive guide to Rifts and Portals=
A guidebook for how to build portals to other realms. It can sometimes be found in dungeon chests, however a copy of this book is not needed as its contents are included in this Encyclopedia.=
Book of Portals=
Building Portals=
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only @1 can I confirm as being more than merely stories.=
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only one can I confirm as being more than merely a story.=
Portal wormhole=
Portals to other realms can be opened by building a frame in the right shape with the right blocks, then using an item to activate it. A local copy of the guidebook to portals is published below.@n---@n@n=
Refer: "Help" > "Basics" > "Building Portals"=
Untitled portal=
We know almost nothing about this portal=
### portal_examples.lua ###
Floatlands Portal=
Requiring 16 blocks of tin and constructed in a circular fashion, a finished frame is seven blocks wide, seven blocks high, and stands vertically like a doorway.@n@nThese travel a distance along the ground, and even when constructed deep underground will link back up to the surface. They appear to favor a strange direction, with the exit portal linking back only for as long as the portal stays open — attempting to reopen a portal from the exit doorway leads to a new destination along this favored direction. It has stymied our ability to study the behavior of these portals because without constructing dual portals and keeping both open it's hard to step through more than one and still be able to return home.@n@nDue to such difficulties, we never learned what determines the direction and distance where the matching twin portal will appear, and I have lost my friend and protégé. In cavalier youth and with little more than a rucksack, Coudreau has decided to follow the chain as far as it goes, and has not been seen since. Coudreau believes it works in epicycles, but I am not convinced. Still, I cling to the hope that one day the portal will open and Coudreau will step out from whichever place leads to this one, perhaps with an epic tale to tell.=
Requiring 21 blocks of ice, and constructed in the shape of a 3 × 3 platform with walls, or like a bowl. A finished platform is 2 blocks high, and 5 blocks wide at the widest in both directions.@n@nThis portal is different to the others, rather than acting akin to a doorway it appears to the eye more like a small pool of water which can be stepped into. Upon setting foot in the portal we found ourselves at a tremendous altitude.@1=
Surface Portal=
There is a floating land of hills and forests up there, over the edges of which is a perilous drop all the way back down to sea level. We have not found how far these pristine lands extend. I have half a mind to retire there one day.=
# textdomain: nether
### init.lua ###
Construction requires 14 blocks of obsidian, which we found deep underground where water had solidified molten rock. The finished frame is four blocks wide, five blocks high, and stands vertically, like a doorway.@n@nThis opens to a truly hellish place, though for small mercies the air there is still breathable. There is an intriguing dimensional mismatch happening between this realm and ours, as after opening the second portal into it we observed that 10 strides taken in the Nether appear to be an equivalent of @1 in the natural world.@n@nThe expedition parties have found no diamonds or gold, and after an experienced search party failed to return from the trail of a missing expedition party, I must conclude this is a dangerous place.=
### init.lua ###
### nodes.lua ###
Nether Portal=
### nodes.lua ###
=
A finely finished block of solid Nether Basalt.=
A rough cut solid block of Nether Basalt.=
A thin crust of cooled lava with liquid lava beneath=
A vent in the earth emitting steam and gas=
Can be repurposed to provide puffs of smoke in a chimney=
Chiselled Basalt=
Columns of dark basalt found only in magma oceans deep within the Nether.=
Compressed Netherbrick=
Cracked Nether Brick=
Deep Glowstone=
Deep Netherrack=
Fumarolic Chimney=
Fumarolic Chimney Corner=
Fumarolic Chimney Slab=
Glowstone=
Hewn Basalt=
Inner Nether Stair=
Lava Crust=
Lava crust is strong enough to walk on, but still hot enough to inflict burns.=
Nether Basalt=
Nether Brick=
Nether Brick Fence=
Nether Slab=
Nether Stair=
Netherrack=
Netherrack from deep in the mantle=
Netherrack stair=
Nethersand=
Outer Nether Stair=
Portal=
### portal_api.lua ###
@n@nThe key to opening such a doorway is to strike the frame with a @1, at which point the very air inside begins to crackle and glow.=
A definitive guide to Rifts and Portals=
A guidebook for how to build portals to other realms. It can sometimes be found in dungeon chests, however a copy of this book is not needed as its contents are included in this Encyclopedia.=
Book of Portals=
Building Portals=
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only @1 can I confirm as being more than merely stories.=
In all my travels, and time spent in the Great Libraries, I have encountered no shortage of legends surrounding preternatural doorways said to open into other worlds, yet only one can I confirm as being more than merely a story.=
Mysterious forces prevented you from opening that portal. Please try another location=
Portal wormhole=
Portals to other realms can be opened by building a frame in the right shape with the right blocks, then using an item to activate it. A local copy of the guidebook to portals is published below.@n---@n@n=
Refer: "Help" > "Basics" > "Building Portals"=
Untitled portal=
We know almost nothing about this portal=
### portal_examples.lua ###
Floatlands Portal=
Requiring 16 blocks of tin and constructed in a circular fashion, a finished frame is seven blocks wide, seven blocks high, and stands vertically like a doorway.@n@nThese travel a distance along the ground, and even when constructed deep underground will link back up to the surface. They appear to favor a strange direction, with the exit portal linking back only for as long as the portal stays open — attempting to reopen a portal from the exit doorway leads to a new destination along this favored direction. It has stymied our ability to study the behavior of these portals because without constructing dual portals and keeping both open it's hard to step through more than one and still be able to return home.@n@nDue to such difficulties, we never learned what determines the direction and distance where the matching twin portal will appear, and I have lost my friend and protégé. In cavalier youth and with little more than a rucksack, Coudreau has decided to follow the chain as far as it goes, and has not been seen since. Coudreau believes it works in epicycles, but I am not convinced. Still, I cling to the hope that one day the portal will open and Coudreau will step out from whichever place leads to this one, perhaps with an epic tale to tell.=
Requiring 21 blocks of ice, and constructed in the shape of a 3 × 3 platform with walls, or like a bowl. A finished platform is 2 blocks high, and 5 blocks wide at the widest in both directions.@n@nThis portal is different to the others, rather than acting akin to a doorway it appears to the eye more like a small pool of water which can be stepped into. Upon setting foot in the portal we found ourselves at a tremendous altitude.@1=
Surface Portal=
There is a floating land of hills and forests up there, over the edges of which is a perilous drop all the way back down to sea level. We have not found how far these pristine lands extend. I have half a mind to retire there one day.=
### tools.lua ###
Nether Axe=
Nether Ingot=
Nether Lump=
Nether Pickaxe=
Nether Shovel=
Nether Sword=

262
mapgen.lua
View File

@ -2,6 +2,12 @@
Nether mod for minetest
"mapgen.lua" is the modern biomes-based Nether mapgen, which
requires Minetest v5.1 or greater
"mapgen_nobiomes.lua" is the legacy version of the mapgen, only used
in older versions of Minetest or in v6 worlds.
Copyright (C) 2013 PilzAdam
Permission to use, copy, modify, and/or distribute this software for
@ -27,10 +33,32 @@ local NETHER_FLOOR = nether.DEPTH_FLOOR
local TCAVE = 0.6
local BLEND = 128
-- parameters for central region
local REGION_BUFFER_THICKNESS = 0.2
local CENTER_REGION_LIMIT = TCAVE - REGION_BUFFER_THICKNESS -- Netherrack gives way to Deep-Netherrack here
local CENTER_CAVERN_LIMIT = CENTER_REGION_LIMIT - 0.1 -- Deep-Netherrack gives way to air here
local SURFACE_CRUST_LIMIT = CENTER_CAVERN_LIMIT * 0.25 -- Crusted-lava at the surface of the lava ocean gives way to liquid lava here
local CRUST_LIMIT = CENTER_CAVERN_LIMIT * 0.85 -- Crusted-lava under the surface of the lava ocean gives way to liquid lava here
local BASALT_COLUMN_UPPER_LIMIT = CENTER_CAVERN_LIMIT * 0.9 -- Basalt columns may appear between these upper and lower limits
local BASALT_COLUMN_LOWER_LIMIT = CENTER_CAVERN_LIMIT * 0.25 -- This value is close to SURFACE_CRUST_LIMIT so basalt columns give way to "flowing" lava rivers
-- Stuff
local math_max, math_min = math.max, math.min -- avoid needing table lookups each time a common math function is invoked
-- Shared Nether mapgen namespace
-- For mapgen files to share functions and constants
nether.mapgen = {}
local mapgen = nether.mapgen
mapgen.TCAVE = TCAVE -- const needed in mapgen_mantle.lua
mapgen.BLEND = BLEND -- const needed in mapgen_mantle.lua
mapgen.CENTER_REGION_LIMIT = CENTER_REGION_LIMIT -- const needed in mapgen_mantle.lua
mapgen.CENTER_CAVERN_LIMIT = CENTER_CAVERN_LIMIT -- const needed in mapgen_mantle.lua
mapgen.BASALT_COLUMN_UPPER_LIMIT = BASALT_COLUMN_UPPER_LIMIT -- const needed in mapgen_mantle.lua
mapgen.BASALT_COLUMN_LOWER_LIMIT = BASALT_COLUMN_LOWER_LIMIT -- const needed in mapgen_mantle.lua
mapgen.ore_ceiling = NETHER_CEILING - BLEND -- leave a solid 128 node cap of netherrack before introducing ores
mapgen.ore_floor = NETHER_FLOOR + BLEND
local debugf = nether.debug
if minetest.read_schematic == nil then
-- Using biomes to create the Nether requires the ability for biomes to set "node_cave_liquid = air".
@ -41,6 +69,18 @@ if minetest.read_schematic == nil then
error("This " .. nether.modname .. " mapgen requires Minetest v5.1 or greater, use mapgen_nobiomes.lua instead.", 0)
end
-- Load helper functions for generating the mantle / center region
dofile(nether.path .. "/mapgen_mantle.lua")
-- Misc math functions
-- avoid needing table lookups each time a common math function is invoked
local math_max, math_min, math_abs, math_floor = math.max, math.min, math.abs, math.floor
-- Inject nether_caverns biome
local function override_underground_biomes()
-- https://forum.minetest.net/viewtopic.php?p=257522#p257522
-- Q: Is there a way to override an already-registered biome so I can get it out of the
@ -121,9 +161,9 @@ minetest.register_node("nether:native_mapgen", {})
minetest.register_biome({
name = "nether_caverns",
node_stone = "nether:native_mapgen", -- nether:native_mapgen is used here to prevent the native mapgen from placing ores and decorations.
node_filler = "nether:native_mapgen", -- The lua on_generate will transform nether:rack_native into nether:rack then decorate and add ores.
node_filler = "nether:native_mapgen", -- The lua on_generate will transform nether:native_mapgen into nether:rack then decorate and add ores.
node_dungeon = "nether:brick",
--node_dungeon_alt = "default:mossycobble",
node_dungeon_alt = "nether:brick_cracked",
node_dungeon_stair = "stairs:stair_nether_brick",
-- Setting node_cave_liquid to "air" avoids the need to filter lava and water out of the mapchunk and
-- surrounding shell (overdraw nodes beyond the mapchunk).
@ -152,19 +192,30 @@ minetest.register_ore({
clust_scarcity = 11 * 11 * 11,
clust_num_ores = 3,
clust_size = 2,
y_max = NETHER_CEILING,
y_min = NETHER_FLOOR,
y_max = mapgen.ore_ceiling,
y_min = mapgen.ore_floor
})
minetest.register_ore({
ore_type = "scatter",
ore = "nether:lava_crust", -- crusted lava replaces scattered glowstone in the mantle
wherein = "nether:rack_deep",
clust_scarcity = 16 * 16 * 16,
clust_num_ores = 4,
clust_size = 2,
y_max = mapgen.ore_ceiling,
y_min = mapgen.ore_floor
})
minetest.register_ore({
ore_type = "scatter",
ore = "default:lava_source",
wherein = "nether:rack",
wherein = {"nether:rack", "nether:rack_deep"},
clust_scarcity = 36 * 36 * 36,
clust_num_ores = 4,
clust_size = 2,
y_max = NETHER_CEILING,
y_min = NETHER_FLOOR,
y_max = mapgen.ore_ceiling,
y_min = mapgen.ore_floor
})
minetest.register_ore({
@ -173,8 +224,8 @@ minetest.register_ore({
wherein = "nether:rack",
clust_scarcity = 14 * 14 * 14,
clust_size = 8,
y_max = NETHER_CEILING,
y_min = NETHER_FLOOR
y_max = mapgen.ore_ceiling,
y_min = mapgen.ore_floor
})
@ -182,7 +233,7 @@ minetest.register_ore({
-- 3D noise
local np_cave = {
mapgen.np_cave = {
offset = 0,
scale = 1,
spread = {x = 384, y = 128, z = 384}, -- squashed 3:1
@ -199,23 +250,29 @@ local nobj_cave = nil
local nbuf_cave = {}
local dbuf = {}
local yblmin = NETHER_FLOOR + BLEND * 2
local yblmax = NETHER_CEILING - BLEND * 2
-- Content ids
local c_air = minetest.get_content_id("air")
local c_netherrack = minetest.get_content_id("nether:rack")
local c_netherbrick = minetest.get_content_id("nether:brick")
local c_netherrack_deep = minetest.get_content_id("nether:rack_deep")
local c_dungeonbrick = minetest.get_content_id("nether:brick")
local c_dungeonbrick_alt = minetest.get_content_id("nether:brick_cracked")
local c_netherbrick_slab = minetest.get_content_id("stairs:slab_nether_brick")
local c_netherfence = minetest.get_content_id("nether:fence_nether_brick")
local c_glowstone = minetest.get_content_id("nether:glowstone")
local c_lava_source = minetest.get_content_id("default:lava_source")
local c_lavasea_source = minetest.get_content_id("nether:lava_source") -- same as lava but with staggered animation to look better as an ocean
local c_lava_crust = minetest.get_content_id("nether:lava_crust")
local c_native_mapgen = minetest.get_content_id("nether:native_mapgen")
-- Dungeon excavation functions
function is_dungeon_brick(node_id)
return node_id == c_dungeonbrick or node_id == c_dungeonbrick_alt
end
function build_dungeon_room_list(data, area)
local result = {}
@ -310,6 +367,8 @@ end
-- (Corridors and the parts of rooms which extend beyond the emerge boundary will remain filled)
function excavate_dungeons(data, area, rooms)
local vi, node_id
-- any air from the native mapgen has been replaced by netherrack, but
-- we don't want this inside dungeons, so fill dungeon rooms with air
for _, roomInfo in ipairs(rooms) do
@ -319,9 +378,10 @@ function excavate_dungeons(data, area, rooms)
for z = room_min.z, room_max.z do
for y = room_min.y, room_max.y do
local vi = area:index(room_min.x, y, z)
vi = area:index(room_min.x, y, z)
for x = room_min.x, room_max.x do
if data[vi] == c_netherrack then data[vi] = c_air end
node_id = data[vi]
if node_id == c_netherrack or node_id == c_netherrack_deep then data[vi] = c_air end
vi = vi + 1
end
end
@ -346,20 +406,22 @@ function decorate_dungeons(data, area, rooms)
local window_y = roomInfo.y + math_min(2, room_max.y - roomInfo.y - 1)
if room_seed % 3 == 0 and room_max.y < maxEdge.y then
-- Glowstone chandelier
-- Glowstone chandelier (feel free to replace with a fancy schematic)
local vi = area:index(roomInfo.x, room_max.y + 1, roomInfo.z)
if data[vi] == c_netherbrick then data[vi] = c_glowstone end
if is_dungeon_brick(data[vi]) then data[vi] = c_glowstone end
elseif room_seed % 4 == 0 and room_min.y > minEdge.y
and room_min.x > minEdge.x and room_max.x < maxEdge.x
and room_min.z > minEdge.z and room_max.z < maxEdge.z then
-- lava well (feel free to replace with a fancy schematic)
local vi = area:index(roomInfo.x, room_min.y, roomInfo.z)
if data[vi - yStride] == c_netherbrick then data[vi - yStride] = c_lava_source end
if data[vi - zStride] == c_air then data[vi - zStride] = c_netherbrick_slab end
if data[vi + zStride] == c_air then data[vi + zStride] = c_netherbrick_slab end
if data[vi - xStride] == c_air then data[vi - xStride] = c_netherbrick_slab end
if data[vi + xStride] == c_air then data[vi + xStride] = c_netherbrick_slab end
if is_dungeon_brick(data[vi - yStride]) then
data[vi - yStride] = c_lava_source
if data[vi - zStride] == c_air then data[vi - zStride] = c_netherbrick_slab end
if data[vi + zStride] == c_air then data[vi + zStride] = c_netherbrick_slab end
if data[vi - xStride] == c_air then data[vi - xStride] = c_netherbrick_slab end
if data[vi + xStride] == c_air then data[vi + xStride] = c_netherbrick_slab end
end
end
-- Barred windows
@ -377,15 +439,15 @@ function decorate_dungeons(data, area, rooms)
local vi_max = area:index(room_max.x + 1, window_y, roomInfo.z)
local locations = {-zStride, zStride, -zStride + yStride, zStride + yStride}
for _, offset in ipairs(locations) do
if data[vi_min + offset] == c_netherbrick then data[vi_min + offset] = window_node end
if data[vi_max + offset] == c_netherbrick then data[vi_max + offset] = window_node end
if is_dungeon_brick(data[vi_min + offset]) then data[vi_min + offset] = window_node end
if is_dungeon_brick(data[vi_max + offset]) then data[vi_max + offset] = window_node end
end
vi_min = area:index(roomInfo.x, window_y, room_min.z - 1)
vi_max = area:index(roomInfo.x, window_y, room_max.z + 1)
locations = {-xStride, xStride, -xStride + yStride, xStride + yStride}
for _, offset in ipairs(locations) do
if data[vi_min + offset] == c_netherbrick then data[vi_min + offset] = window_node end
if data[vi_max + offset] == c_netherbrick then data[vi_max + offset] = window_node end
if is_dungeon_brick(data[vi_min + offset]) then data[vi_min + offset] = window_node end
if is_dungeon_brick(data[vi_max + offset]) then data[vi_max + offset] = window_node end
end
end
@ -395,8 +457,43 @@ function decorate_dungeons(data, area, rooms)
end
local yblmin = NETHER_FLOOR + BLEND * 2
local yblmax = NETHER_CEILING - BLEND * 2
-- At both the top and bottom of the Nether, as set by NETHER_CEILING and NETHER_FLOOR,
-- there is a 128 deep cap of solid netherrack, followed by a 128-deep blending zone
-- where Nether caverns may start to appear.
-- The solid zones and blending zones are achieved by adjusting the np_cave noise to be
-- outside the range where caverns form, this function returns that adjustment.
--
-- Returns two values: the noise limit adjustment for nether caverns, and the
-- noise limit adjustment for the central region / mantle caverns
mapgen.get_mapgenblend_adjustments = function(y)
-- floorAndCeilingBlend will normally be 0, but shifts toward 1 in the
-- blending zone, and goes higher than 1 in the solid zone between the
-- blending zone and the end of the nether.
local floorAndCeilingBlend = 0
if y > yblmax then floorAndCeilingBlend = ((y - yblmax) / BLEND) ^ 2 end
if y < yblmin then floorAndCeilingBlend = ((yblmin - y) / BLEND) ^ 2 end
-- the nether caverns exist when np_cave noise is greater than TCAVE, so
-- to fade out the nether caverns, adjust TCAVE upward.
local tcave_adj = floorAndCeilingBlend
-- the central regions exists when np_cave noise is below CENTER_REGION_LIMIT,
-- so to fade out the mantle caverns adjust CENTER_REGION_LIMIT downward.
local centerRegionLimit_adj = -(CENTER_REGION_LIMIT * floorAndCeilingBlend)
return tcave_adj, centerRegionLimit_adj
end
-- On-generated function
local tunnelCandidate_count = 0
local tunnel_count = 0
local total_chunk_count = 0
local function on_generated(minp, maxp, seed)
if minp.y > NETHER_CEILING or maxp.y < NETHER_FLOOR then
@ -414,38 +511,120 @@ local function on_generated(minp, maxp, seed)
local zCaveStride = yCaveStride * yCaveStride
local chulens = {x = yCaveStride, y = yCaveStride, z = yCaveStride}
nobj_cave = nobj_cave or minetest.get_perlin_map(np_cave, chulens)
nobj_cave = nobj_cave or minetest.get_perlin_map(mapgen.np_cave, chulens)
local nvals_cave = nobj_cave:get_3d_map_flat(minp, nbuf_cave)
local dungeonRooms = build_dungeon_room_list(data, area)
local abs_cave_noise, abs_cave_noise_adjusted
for y = y0, y1 do -- Y loop first to minimise tcave calculations
local contains_nether = false
local contains_shell = false
local contains_mantle = false
local contains_ocean = false
local tcave = TCAVE
if y > yblmax then tcave = TCAVE + ((y - yblmax) / BLEND) ^ 2 end
if y < yblmin then tcave = TCAVE + ((yblmin - y) / BLEND) ^ 2 end
for y = y0, y1 do -- Y loop first to minimise tcave & lava-sea calculations
local sea_level, cavern_limit_distance = mapgen.find_nearest_lava_sealevel(y) -- function provided by mapgen_mantle.lua
local above_lavasea = y > sea_level
local below_lavasea = y < sea_level
local tcave_adj, centerRegionLimit_adj = mapgen.get_mapgenblend_adjustments(y)
local tcave = TCAVE + tcave_adj
local tmantle = CENTER_REGION_LIMIT + centerRegionLimit_adj -- cavern_noise_adj already contains central_region_limit_adj, so tmantle is only for comparisons when cavern_noise_adj hasn't been added to the noise value
local cavern_noise_adj =
CENTER_REGION_LIMIT * (cavern_limit_distance * cavern_limit_distance * cavern_limit_distance) -
centerRegionLimit_adj -- cavern_noise_adj gets added to noise value instead of added to the limit np_noise is compared against, so subtract centerRegionLimit_adj instead of adding
for z = z0, z1 do
local vi = area:index(x0, y, z) -- Initial voxelmanip index
local ni = (z - z0) * zCaveStride + (y - y0) * yCaveStride + 1
local noise2di = 1 + (z - z0) * yCaveStride
for x = x0, x1 do
local id = data[vi] -- Existing node
local cave_noise = nvals_cave[ni]
if nvals_cave[ni] > tcave then
if cave_noise > tcave then
-- Prime region
-- This was the only region in initial versions of the Nether mod.
-- It is the only region which portals from the surface will open into.
data[vi] = c_air
elseif id == c_air or id == c_native_mapgen then
data[vi] = c_netherrack -- excavate_dungeons() will mostly reverse this inside dungeons
contains_nether = true
elseif -cave_noise > tcave then
-- Secondary/spare region
-- This secondary region is unused until someone decides to do something cool or novel with it.
-- Reaching here would require the player to first find and journey through the central region,
-- as it's always separated from the Prime region by the central region.
data[vi] = c_netherrack -- For now I've just left this region as solid netherrack instead of air.
-- Only set contains_nether to true here if you want tunnels created between the secondary region
-- and the central region.
--contains_nether = true
--data[vi] = c_air
else
-- netherrack walls and/or center region/mantle
abs_cave_noise = math_abs(cave_noise)
-- abs_cave_noise_adjusted makes the center region smaller as distance from the lava ocean
-- increases, we do this by pretending the abs_cave_noise value is higher.
abs_cave_noise_adjusted = abs_cave_noise + cavern_noise_adj
if abs_cave_noise_adjusted >= CENTER_CAVERN_LIMIT then
local id = data[vi] -- Check existing node to avoid removing dungeons
if id == c_air or id == c_native_mapgen then
if abs_cave_noise < tmantle then
data[vi] = c_netherrack_deep
else
-- the shell seperating the mantle from the rest of the nether...
data[vi] = c_netherrack -- excavate_dungeons() will mostly reverse this inside dungeons
contains_shell = true
end
end
elseif above_lavasea then
data[vi] = c_air
contains_mantle = true
elseif abs_cave_noise_adjusted < SURFACE_CRUST_LIMIT or (below_lavasea and abs_cave_noise_adjusted < CRUST_LIMIT) then
data[vi] = c_lavasea_source
contains_ocean = true
else
data[vi] = c_lava_crust
contains_ocean = true
end
end
ni = ni + 1
vi = vi + 1
noise2di = noise2di + 1
end
end
end
if contains_mantle or contains_ocean then
mapgen.add_basalt_columns(data, area, minp, maxp) -- function provided by mapgen_mantle.lua
end
if contains_nether and contains_mantle then
tunnelCandidate_count = tunnelCandidate_count + 1
local success = mapgen.excavate_tunnel_to_center_of_the_nether(data, area, nvals_cave, minp, maxp) -- function provided by mapgen_mantle.lua
if success then tunnel_count = tunnel_count + 1 end
end
total_chunk_count = total_chunk_count + 1
if total_chunk_count % 50 == 0 then
debugf(
"%s of %s chunks contain both nether and lava-sea (%s%%), %s chunks generated a pathway (%s%%)",
tunnelCandidate_count,
total_chunk_count,
math_floor(tunnelCandidate_count * 100 / total_chunk_count),
tunnel_count,
math_floor(tunnel_count * 100 / total_chunk_count)
)
end
-- any air from the native mapgen has been replaced by netherrack, but we
-- don't want netherrack inside dungeons, so fill known dungeon rooms with air.
excavate_dungeons(data, area, dungeonRooms)
@ -453,10 +632,9 @@ local function on_generated(minp, maxp, seed)
vm:set_data(data)
-- avoid generating decorations on the underside of the bottom of the nether
if minp.y > NETHER_FLOOR and maxp.y < NETHER_CEILING then minetest.generate_decorations(vm) end
minetest.generate_ores(vm)
minetest.generate_decorations(vm)
vm:set_lighting({day = 0, night = 0}, minp, maxp)
vm:calc_lighting()
vm:update_liquids()
@ -467,7 +645,7 @@ end
-- use knowledge of the nether mapgen algorithm to return a suitable ground level for placing a portal.
-- player_name is optional, allowing a player to spawn a remote portal in their own protected areas.
function nether.find_nether_ground_y(target_x, target_z, start_y, player_name)
local nobj_cave_point = minetest.get_perlin(np_cave)
local nobj_cave_point = minetest.get_perlin(mapgen.np_cave)
local air = 0 -- Consecutive air nodes found
local minp_schem, maxp_schem = nether.get_schematic_volume({x = target_x, y = 0, z = target_z}, nil, "nether_portal")

225
mapgen_decorations.lua
View File

@ -25,10 +25,16 @@
-- emerged or not before the decoration was placed.
local allow_lava_decorations = nether.useBiomes
-- Keep compatibility with mapgen_nobiomes.lua, so hardcoding 128
-- instead of using nether.mapgen.BLEND
local decoration_ceiling = nether.DEPTH_CEILING - 128
local decoration_floor = nether.DEPTH_FLOOR + 128
local _ = {name = "air", prob = 0}
local A = {name = "air", prob = 255, force_place = true}
local G = {name = "nether:glowstone", prob = 255, force_place = true}
local N = {name = "nether:rack", prob = 255}
local D = {name = "nether:rack_deep", prob = 255}
local S = {name = "nether:sand", prob = 255, force_place = true}
local L = {name = "default:lava_source", prob = 255, force_place = true}
local F = {name = "nether:fumarole", prob = 255, force_place = true}
@ -125,8 +131,8 @@ minetest.register_decoration({
sidelen = 80,
fill_ratio = 0.0003,
biomes = {"nether_caverns"},
y_max = nether.DEPTH_CEILING, -- keep compatibility with mapgen_nobiomes.lua
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_GlowstoneStalactite,
flags = "place_center_x,place_center_z,force_placement,all_ceilings",
place_offset_y=-3
@ -139,8 +145,8 @@ minetest.register_decoration({
sidelen = 80,
fill_ratio = 0.0008,
biomes = {"nether_caverns"},
y_max = nether.DEPTH_CEILING, -- keep compatibility with mapgen_nobiomes.lua
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_GlowstoneStalactite,
replacements = {["nether:glowstone"] = "nether:rack"},
flags = "place_center_x,place_center_z,all_ceilings",
@ -148,6 +154,193 @@ minetest.register_decoration({
})
local schematic_GreaterStalactite = {
size = {x = 3, y = 23, z = 3},
data = { -- note that data is upside down
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, D, _,
_, D, _,
_, D, _,
_, D, _,
D, D, D,
D, D, D,
D, D, D,
_, D, _,
_, _, _,
_, _, _,
_, D, _, -- ypos 0, prob 85% (218/255)
_, D, _, -- ypos 1, prob 85% (218/255)
_, D, _, -- ypos 2, prob 85% (218/255)
_, D, _, -- ypos 3, prob 85% (218/255)
_, D, _, -- ypos 4, prob 85% (218/255)
_, D, _, -- ypos 5, prob 85% (218/255)
_, D, _, -- ypos 6, prob 85% (218/255)
_, D, _, -- ypos 7, prob 85% (218/255)
_, D, _, -- ypos 8, prob 85% (218/255)
_, D, D, -- ypos 9, prob 50% (128/256) to make half of stalactites asymmetric
_, D, D, -- ypos 10, prob 50% (128/256) to make half of stalactites asymmetric
_, D, D, -- ypos 11, prob 50% (128/256) to make half of stalactites asymmetric
_, D, D, -- ypos 12, prob 50% (128/256) to make half of stalactites asymmetric
D, D, D, -- ypos 13, prob 75% (192/256)
D, D, D, -- ypos 14, prob 75% (192/256)
D, D, D, -- ypos 15, prob 100%
D, D, D, -- ypos 16, prob 100%
D, D, D, -- ypos 17, prob 100%
D, D, D, -- ypos 18, prob 100%
D, D, D, -- ypos 19, prob 75% (192/256)
D, D, D, -- ypos 20, prob 85% (218/255)
_, D, D, -- ypos 21, prob 50% (128/256) to make half of stalactites asymmetric
_, D, _, -- ypos 22, prob 100%
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, _, _,
_, D, _,
_, D, _,
_, D, _,
_, D, _,
_, D, _,
D, D, D,
D, D, D,
D, D, D,
_, D, _,
_, D, _,
_, _, _,
},
-- Y-slice probabilities do not function correctly for ceiling schematic
-- decorations because they are inverted, so ypos numbers have been inverted
-- to match, and a larger offset in place_offset_y should be used (e.g. -3).
yslice_prob = {
{ypos = 21, prob = 128},
{ypos = 20, prob = 218},
{ypos = 19, prob = 192},
{ypos = 14, prob = 192},
{ypos = 13, prob = 192},
{ypos = 12, prob = 128},
{ypos = 11, prob = 128},
{ypos = 10, prob = 128},
{ypos = 9, prob = 128},
{ypos = 8, prob = 218},
{ypos = 7, prob = 218},
{ypos = 6, prob = 218},
{ypos = 5, prob = 218},
{ypos = 4, prob = 218},
{ypos = 3, prob = 218},
{ypos = 2, prob = 218},
{ypos = 1, prob = 218},
{ypos = 0, prob = 218}
}
}
-- A stalagmite is an upsidedown stalactite, so
-- use the GreaterStalactite to create a ToweringStalagmite schematic
local schematic_ToweringStalagmite = {
size = schematic_GreaterStalactite.size,
data = {},
yslice_prob = {}
}
local array_length = #schematic_GreaterStalactite.data + 1
for i, node in ipairs(schematic_GreaterStalactite.data) do
schematic_ToweringStalagmite.data[array_length - i] = node
end
y_size = schematic_GreaterStalactite.size.y
for i, node in ipairs(schematic_GreaterStalactite.yslice_prob) do
schematic_ToweringStalagmite.yslice_prob[i] = {
-- we can safely lower the prob. to gain more variance because floor based schematics
-- don't have the bug where missing lines moves them away from the surface
prob = schematic_GreaterStalactite.yslice_prob[i].prob - 20,
ypos = y_size - 1 - schematic_GreaterStalactite.yslice_prob[i].ypos
}
end
minetest.register_decoration({
name = "Deep-glowstone stalactite",
deco_type = "schematic",
place_on = "nether:rack_deep",
sidelen = 80,
fill_ratio = 0.0003,
biomes = {"nether_caverns"},
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_GlowstoneStalactite,
replacements = {["nether:rack"] = "nether:rack_deep", ["nether:glowstone"] = "nether:glowstone_deep"},
flags = "place_center_x,place_center_z,force_placement,all_ceilings",
place_offset_y=-3
})
minetest.register_decoration({
name = "Deep-glowstone stalactite outgrowth",
deco_type = "schematic",
place_on = "nether:glowstone_deep",
sidelen = 40,
fill_ratio = 0.15,
biomes = {"nether_caverns"},
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = {
size = {x = 1, y = 4, z = 1},
data = { G, G, G, G }
},
replacements = {["nether:glowstone"] = "nether:glowstone_deep"},
flags = "place_center_x,place_center_z,all_ceilings",
})
minetest.register_decoration({
name = "Deep-netherrack stalactite",
deco_type = "schematic",
place_on = "nether:rack_deep",
sidelen = 80,
fill_ratio = 0.0003,
biomes = {"nether_caverns"},
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_GlowstoneStalactite,
replacements = {["nether:rack"] = "nether:rack_deep", ["nether:glowstone"] = "nether:rack_deep"},
flags = "place_center_x,place_center_z,force_placement,all_ceilings",
place_offset_y=-3
})
minetest.register_decoration({
name = "Deep-netherrack towering stalagmite",
deco_type = "schematic",
place_on = "nether:rack_deep",
sidelen = 80,
fill_ratio = 0.001,
biomes = {"nether_caverns"},
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_ToweringStalagmite,
replacements = {["nether:basalt"] = "nether:rack_deep"},
flags = "place_center_x,place_center_z,force_placement,all_floors",
place_offset_y=-2
})
-- =======================================
-- Concealed crevice / Lava sinkhole
-- =======================================
@ -161,8 +354,8 @@ if allow_lava_decorations then
sidelen = 80,
fill_ratio = 0.002,
biomes = {"nether_caverns"},
y_max = nether.DEPTH, -- keep compatibility with mapgen_nobiomes.lua
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = {
size = {x = 4, y = 7, z = 4},
data = { -- note that data is upside down
@ -263,8 +456,8 @@ minetest.register_decoration({
sidelen = 80,
fill_ratio = 0.005,
biomes = {"nether_caverns"},
y_max = nether.DEPTH,
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_fumarole,
replacements = replacements_full,
flags = "place_center_x,place_center_z,all_floors",
@ -292,8 +485,8 @@ minetest.register_decoration({
sidelen = 8,
noise_params = fumarole_clump_noise,
biomes = {"nether_caverns"},
y_max = nether.DEPTH,
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_fumarole,
replacements = replacements_full,
flags = "place_center_x,place_center_z,all_floors",
@ -308,8 +501,8 @@ minetest.register_decoration({
sidelen = 8,
noise_params = fumarole_clump_noise,
biomes = {"nether_caverns"},
y_max = nether.DEPTH,
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = schematic_fumarole,
replacements = replacements_slab,
flags = "place_center_x,place_center_z,all_floors",
@ -324,8 +517,8 @@ minetest.register_decoration({
sidelen = 8,
noise_params = fumarole_clump_noise,
biomes = {"nether_caverns"},
y_max = nether.DEPTH,
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = {
size = {x = 4, y = 4, z = 4},
data = { -- note that data is upside down
@ -363,8 +556,8 @@ minetest.register_decoration({
sidelen = 8,
noise_params = fumarole_clump_noise,
biomes = {"nether_caverns"},
y_max = nether.DEPTH,
y_min = nether.DEPTH_FLOOR,
y_max = decoration_ceiling,
y_min = decoration_floor,
schematic = {
size = {x = 4, y = 5, z = 4},
data = { -- note that data is upside down

476
mapgen_mantle.lua Normal file
View File

@ -0,0 +1,476 @@
--[[
Nether mod for minetest
This file contains helper functions for generating the Mantle
(AKA center region), which are moved into a separate file to keep the
size of mapgen.lua manageable.
Copyright (C) 2021 Treer
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
]]--
local debugf = nether.debug
local mapgen = nether.mapgen
local BASALT_COLUMN_UPPER_LIMIT = mapgen.BASALT_COLUMN_UPPER_LIMIT
local BASALT_COLUMN_LOWER_LIMIT = mapgen.BASALT_COLUMN_LOWER_LIMIT
-- 2D noise for basalt formations
local np_basalt = {
offset =-0.85,
scale = 1,
spread = {x = 46, y = 46, z = 46},
seed = 1000,
octaves = 5,
persistence = 0.5,
lacunarity = 2.6,
flags = "eased"
}
-- Buffers and objects we shouldn't recreate every on_generate
local nobj_basalt = nil
local nbuf_basalt = {}
local cavePerlin = nil
-- Content ids
local c_air = minetest.get_content_id("air")
local c_netherrack_deep = minetest.get_content_id("nether:rack_deep")
local c_glowstone = minetest.get_content_id("nether:glowstone")
local c_lavasea_source = minetest.get_content_id("nether:lava_source") -- same as lava but with staggered animation to look better as an ocean
local c_lava_crust = minetest.get_content_id("nether:lava_crust")
local c_basalt = minetest.get_content_id("nether:basalt")
-- Math funcs
local math_max, math_min, math_abs, math_floor = math.max, math.min, math.abs, math.floor -- avoid needing table lookups each time a common math function is invoked
function random_unit_vector()
return vector.normalize({
x = math.random() - 0.5,
y = math.random() - 0.5,
z = math.random() - 0.5
})
end
-- returns the smallest component in the vector
function vector_min(v)
return math_min(v.x, math_min(v.y, v.z))
end
-- Mantle mapgen functions (AKA Center region)
-- Returns (absolute height, fractional distance from ceiling or sea floor)
-- the fractional distance from ceiling or sea floor is a value between 0 and 1 (inclusive)
-- Note it may find the most relevent sea-level - not necesssarily the one you are closest
-- to, since the space above the sea reaches much higher than the depth below the sea.
mapgen.find_nearest_lava_sealevel = function(y)
-- todo: put oceans near the bottom of chunks to improve ability to generate tunnels to the center
-- todo: constrain y to be not near the bounds of the nether
-- todo: add some random adj at each level, seeded only by the level height
local sealevel = math.floor((y + 100) / 200) * 200
--local sealevel = math.floor((y + 80) / 160) * 160
--local sealevel = math.floor((y + 120) / 240) * 240
local cavern_limits_fraction
local height_above_sea = y - sealevel
if height_above_sea >= 0 then
cavern_limits_fraction = math_min(1, height_above_sea / 95)
else
-- approaches 1 much faster as the lava sea is shallower than the cavern above it
cavern_limits_fraction = math_min(1, -height_above_sea / 40)
end
return sealevel, cavern_limits_fraction
end
mapgen.add_basalt_columns = function(data, area, minp, maxp)
-- Basalt columns are structures found in lava oceans, and the only way to obtain
-- nether basalt.
-- Their x, z position is determined by a 2d noise map and a 2d slice of the cave
-- noise (taken at lava-sealevel).
local x0, y0, z0 = minp.x, math_max(minp.y, nether.DEPTH_FLOOR), minp.z
local x1, y1, z1 = maxp.x, math_min(maxp.y, nether.DEPTH_CEILING), maxp.z
local yStride = area.ystride
local yCaveStride = x1 - x0 + 1
cavePerlin = cavePerlin or minetest.get_perlin(mapgen.np_cave)
nobj_basalt = nobj_basalt or minetest.get_perlin_map(np_basalt, {x = yCaveStride, y = yCaveStride})
local nvals_basalt = nobj_basalt:get_2d_map_flat({x=minp.x, y=minp.z}, {x=yCaveStride, y=yCaveStride}, nbuf_basalt)
local nearest_sea_level, _ = mapgen.find_nearest_lava_sealevel(math_floor((y0 + y1) / 2))
local leeway = mapgen.CENTER_CAVERN_LIMIT * 0.18
for z = z0, z1 do
local noise2di = 1 + (z - z0) * yCaveStride
for x = x0, x1 do
local basaltNoise = nvals_basalt[noise2di]
if basaltNoise > 0 then
-- a basalt column is here
local abs_sealevel_cave_noise = math_abs(cavePerlin:get3d({x = x, y = nearest_sea_level, z = z}))
-- Add Some quick deterministic noise to the column heights
-- This is probably not good noise, but it doesn't have to be.
local fastNoise = 17
fastNoise = 37 * fastNoise + y0
fastNoise = 37 * fastNoise + z
fastNoise = 37 * fastNoise + x
fastNoise = 37 * fastNoise + math_floor(basaltNoise * 32)
local columnHeight = basaltNoise * 18 + ((fastNoise % 3) - 1)
-- columns should drop below sealevel where lava rivers are flowing
-- i.e. anywhere abs_sealevel_cave_noise < BASALT_COLUMN_LOWER_LIMIT
-- And we'll also have it drop off near the edges of the lava ocean so that
-- basalt columns can only be found by the player reaching a lava ocean.
local lowerClip = (math_min(math_max(abs_sealevel_cave_noise, BASALT_COLUMN_LOWER_LIMIT - leeway), BASALT_COLUMN_LOWER_LIMIT + leeway) - BASALT_COLUMN_LOWER_LIMIT) / leeway
local upperClip = (math_min(math_max(abs_sealevel_cave_noise, BASALT_COLUMN_UPPER_LIMIT - leeway), BASALT_COLUMN_UPPER_LIMIT + leeway) - BASALT_COLUMN_UPPER_LIMIT) / leeway
local columnHeightAdj = lowerClip * -upperClip -- all are values between 1 and -1
columnHeight = columnHeight + math_floor(columnHeightAdj * 12 - 12)
local vi = area:index(x, y0, z) -- Initial voxelmanip index
for y = y0, y1 do -- Y loop first to minimise tcave & lava-sea calculations
if y < nearest_sea_level + columnHeight then
local id = data[vi] -- Existing node
if id == c_lava_crust or id == c_lavasea_source or (id == c_air and y > nearest_sea_level) then
-- Avoid letting columns extend beyond the central region.
-- (checking node ids saves having to calculate abs_cave_noise_adjusted here
-- to test it against CENTER_CAVERN_LIMIT)
data[vi] = c_basalt
end
end
vi = vi + yStride
end
end
noise2di = noise2di + 1
end
end
end
-- returns an array of points from pos1 and pos2 which deviate from a straight line
-- but which don't venture too close to a chunk boundary
function generate_waypoints(pos1, pos2, minp, maxp)
local segSize = 10
local maxDeviation = 7
local minDistanceFromChunkWall = 5
local pathVec = vector.subtract(pos2, pos1)
local pathVecNorm = vector.normalize(pathVec)
local pathLength = vector.distance(pos1, pos2)
local minBound = vector.add(minp, minDistanceFromChunkWall)
local maxBound = vector.subtract(maxp, minDistanceFromChunkWall)
local result = {}
result[1] = pos1
local segmentCount = math_floor(pathLength / segSize)
for i = 1, segmentCount do
local waypoint = vector.add(pos1, vector.multiply(pathVec, i / (segmentCount + 1)))
-- shift waypoint a few blocks in a random direction orthogonally to the pathVec, to make the path crooked.
local crossProduct
repeat
crossProduct = vector.normalize(vector.cross(pathVecNorm, random_unit_vector()))
until vector.length(crossProduct) > 0
local deviation = vector.multiply(crossProduct, math.random(1, maxDeviation))
waypoint = vector.add(waypoint, deviation)
waypoint = {
x = math_min(maxBound.x, math_max(minBound.x, waypoint.x)),
y = math_min(maxBound.y, math_max(minBound.y, waypoint.y)),
z = math_min(maxBound.z, math_max(minBound.z, waypoint.z))
}
result[#result + 1] = waypoint
end
result[#result + 1] = pos2
return result
end
function excavate_pathway(data, area, nether_pos, center_pos, minp, maxp)
local ystride = area.ystride
local zstride = area.zstride
math.randomseed(nether_pos.x + 10 * nether_pos.y + 100 * nether_pos.z) -- so each tunnel generates deterministically (this doesn't have to be a quality seed)
local dist = math_floor(vector.distance(nether_pos, center_pos))
local waypoints = generate_waypoints(nether_pos, center_pos, minp, maxp)
-- First pass: record path details
local linedata = {}
local last_pos = {}
local line_index = 1
local first_filled_index, boundary_index, last_filled_index
for i = 0, dist do
-- Bresenham's line would be good here, but too much lua code
local waypointProgress = (#waypoints - 1) * i / dist
local segmentIndex = math_min(math_floor(waypointProgress) + 1, #waypoints - 1) -- from the integer portion of waypointProgress
local segmentInterp = waypointProgress - (segmentIndex - 1) -- the remaining fractional portion
local segmentStart = waypoints[segmentIndex]
local segmentVector = vector.subtract(waypoints[segmentIndex + 1], segmentStart)
local pos = vector.round(vector.add(segmentStart, vector.multiply(segmentVector, segmentInterp)))
if not vector.equals(pos, last_pos) then
local vi = area:indexp(pos)
local node_id = data[vi]
linedata[line_index] = {
pos = pos,
vi = vi,
node_id = node_id
}
if boundary_index == nil and node_id == c_netherrack_deep then
boundary_index = line_index
end
if node_id == c_air then
if boundary_index ~= nil and last_filled_index == nil then
last_filled_index = line_index
end
else
if first_filled_index == nil then
first_filled_index = line_index
end
end
line_index = line_index + 1
last_pos = pos
end
end
first_filled_index = first_filled_index or 1
last_filled_index = last_filled_index or #linedata
boundary_index = boundary_index or last_filled_index
-- limit tunnel radius to roughly the closest that startPos or stopPos comes to minp-maxp, so we
-- don't end up exceeding minp-maxp and having excavation filled in when the next chunk is generated.
local startPos, stopPos = linedata[first_filled_index].pos, linedata[last_filled_index].pos
local radiusLimit = vector_min(vector.subtract(startPos, minp))
radiusLimit = math_min(radiusLimit, vector_min(vector.subtract(stopPos, minp)))
radiusLimit = math_min(radiusLimit, vector_min(vector.subtract(maxp, startPos)))
radiusLimit = math_min(radiusLimit, vector_min(vector.subtract(maxp, stopPos)))
if radiusLimit < 4 then -- This is a logic check, ignore it. It could be commented out
-- 4 is (79 - 75), and values less than 4 shouldn't be possible if sampling-skip was 10
-- i.e. if sampling-skip was 10 then {5, 15, 25, 35, 45, 55, 65, 75} should be sampled from possible positions 0 to 79
debugf("Error: radiusLimit %s is smaller then half the sampling distance. min %s, max %s, start %s, stop %s", radiusLimit, minp, maxp, startPos, stopPos)
end
radiusLimit = radiusLimit + 1 -- chunk walls wont be visibly flat if the radius only exceeds it a little ;)
-- Second pass: excavate
local start_index, stop_index = math_max(1, first_filled_index - 2), math_min(#linedata, last_filled_index + 3)
for i = start_index, stop_index, 3 do
-- Adjust radius so that tunnels start wide but thin out in the middle
local distFromEnds = 1 - math_abs(((start_index + stop_index) / 2) - i) / ((stop_index - start_index) / 2) -- from 0 to 1, with 0 at ends and 1 in the middle
-- Have it more flaired at the ends, rather than linear.
-- i.e. sizeAdj approaches 1 quickly as distFromEnds increases
local distFromMiddle = 1 - distFromEnds
local sizeAdj = 1 - (distFromMiddle * distFromMiddle * distFromMiddle)
local radius = math_min(radiusLimit, math.random(50 - (25 * sizeAdj), 80 - (45 * sizeAdj)) / 10)
local radiusSquared = radius * radius
local radiusCeil = math_floor(radius + 0.5)
linedata[i].radius = radius -- Needed in third pass
linedata[i].distFromEnds = distFromEnds -- Needed in third pass
local vi = linedata[i].vi
for z = -radiusCeil, radiusCeil do
local vi_z = vi + z * zstride
for y = -radiusCeil, radiusCeil do
local vi_zy = vi_z + y * ystride
local xSquaredLimit = radiusSquared - (z * z + y * y)
for x = -radiusCeil, radiusCeil do
if x * x < xSquaredLimit then
data[vi_zy + x] = c_air
end
end
end
end
end
-- Third pass: decorate
-- Add glowstones to make tunnels to the mantle easier to find
-- https://i.imgur.com/sRA28x7.jpg
for i = start_index, stop_index, 3 do
if linedata[i].distFromEnds < 0.3 then
local glowcount = 0
local radius = linedata[i].radius
for _ = 1, 20 do
local testPos = vector.round(vector.add(linedata[i].pos, vector.multiply(random_unit_vector(), radius + 0.5)))
local vi = area:indexp(testPos)
if data[vi] ~= c_air then
data[vi] = c_glowstone
glowcount = glowcount + 1
--else
-- data[vi] = c_debug
end
if glowcount >= 2 then break end
end
end
end
end
-- excavates a tunnel connecting the Primary or Secondary region with the mantle / central region
-- if a suitable path is found.
-- Returns true if successful
mapgen.excavate_tunnel_to_center_of_the_nether = function(data, area, nvals_cave, minp, maxp)
local result = false
local extent = vector.subtract(maxp, minp)
local skip = 10 -- sampling rate of 1 in 10
local highest = -1000
local lowest = 1000
local lowest_vi
local highest_vi
local yCaveStride = maxp.x - minp.x + 1
local zCaveStride = yCaveStride * yCaveStride
local vi_offset = area:indexp(vector.add(minp, math_floor(skip / 2))) -- start half the sampling distance away from minp
local vi, ni
for y = 0, extent.y - 1, skip do
local sealevel = mapgen.find_nearest_lava_sealevel(minp.y + y)
if minp.y + y > sealevel then -- only create tunnels above sea level
for z = 0, extent.z - 1, skip do
vi = vi_offset + y * area.ystride + z * area.zstride
ni = z * zCaveStride + y * yCaveStride + 1
for x = 0, extent.x - 1, skip do
local noise = math_abs(nvals_cave[ni])
if noise < lowest then
lowest = noise
lowest_vi = vi
end
if noise > highest then
highest = noise
highest_vi = vi
end
ni = ni + skip
vi = vi + skip
end
end
end
end
if lowest < mapgen.CENTER_CAVERN_LIMIT and highest > mapgen.TCAVE + 0.03 then
local mantle_y = area:position(lowest_vi).y
local sealevel, cavern_limit_distance = mapgen.find_nearest_lava_sealevel(mantle_y)
local _, centerRegionLimit_adj = mapgen.get_mapgenblend_adjustments(mantle_y)
local cavern_noise_adj =
mapgen.CENTER_REGION_LIMIT * (cavern_limit_distance * cavern_limit_distance * cavern_limit_distance) -
centerRegionLimit_adj -- cavern_noise_adj gets added to noise value instead of added to the limit np_noise is compared against, so subtract centerRegionLimit_adj instead of adding
if lowest + cavern_noise_adj < mapgen.CENTER_CAVERN_LIMIT then
excavate_pathway(data, area, area:position(highest_vi), area:position(lowest_vi), minp, maxp)
result = true
end
end
return result
end
minetest.register_chatcommand("nether_whereami",
{
description = "Describes which region of the nether the player is in",
privs = {debug = true},
func = function(name, param)
local player = minetest.get_player_by_name(name)
if player == nil then return false, "Unknown player position" end
local pos = vector.round(player:get_pos())
if pos.y > nether.DEPTH_CEILING or pos.y < nether.DEPTH_FLOOR then
return true, "The Overworld"
end
cavePerlin = cavePerlin or minetest.get_perlin(mapgen.np_cave)
local densityNoise = cavePerlin:get_3d(pos)
local sea_level, cavern_limit_distance = mapgen.find_nearest_lava_sealevel(pos.y)
local tcave_adj, centerRegionLimit_adj = mapgen.get_mapgenblend_adjustments(pos.y)
local tcave = mapgen.TCAVE + tcave_adj
local tmantle = mapgen.CENTER_REGION_LIMIT + centerRegionLimit_adj
local cavern_noise_adj =
mapgen.CENTER_REGION_LIMIT * (cavern_limit_distance * cavern_limit_distance * cavern_limit_distance) -
centerRegionLimit_adj -- cavern_noise_adj gets added to noise value instead of added to the limit np_noise is compared against, so subtract centerRegionLimit_adj so subtract centerRegionLimit_adj instead of adding
local desc
if densityNoise > tcave then
desc = "Positive nether"
elseif -densityNoise > tcave then
desc = "Negative nether"
elseif math_abs(densityNoise) < tmantle then
desc = "Mantle"
if math_abs(densityNoise) + cavern_noise_adj < mapgen.CENTER_CAVERN_LIMIT then
desc = desc .. " inside cavern"
else
desc = desc .. " but outside cavern"
end
elseif densityNoise > 0 then
desc = "Shell between positive nether and center region"
else
desc = "Shell between negative nether and center region"
end
local sea_pos = pos.y - sea_level
if sea_pos > 0 then
desc = desc .. ", " .. sea_pos .. "m above lava-sea level"
else
desc = desc .. ", " .. sea_pos .. "m below lava-sea level"
end
if tcave_adj > 0 then
desc = desc .. ", approaching y boundary of Nether"
end
return true, "[Perlin " .. (math_floor(densityNoise * 1000) / 1000) .. "] " .. desc
end
}
)

9
mapgen_nobiomes.lua
View File

@ -2,6 +2,12 @@
Nether mod for minetest
"mapgen_nobiomes.lua" is the legacy version of the mapgen, only used
in older versions of Minetest or in v6 worlds.
"mapgen.lua" is the modern biomes-based Nether mapgen, which
requires Minetest v5.1 or greater
Copyright (C) 2013 PilzAdam
Permission to use, copy, modify, and/or distribute this software for
@ -190,8 +196,7 @@ minetest.register_on_generated(function(minp, maxp, seed)
vm:set_data(data)
-- avoid generating decorations on the underside of the bottom of the nether
if minp.y > NETHER_FLOOR and maxp.y < NETHER_CEILING then minetest.generate_decorations(vm) end
minetest.generate_decorations(vm)
vm:set_lighting({day = 0, night = 0}, minp, maxp)
vm:calc_lighting()

412
nodes.lua
View File

@ -75,6 +75,16 @@ minetest.register_node("nether:rack", {
sounds = default.node_sound_stone_defaults(),
})
-- Deep Netherrack, found in the mantle / central magma layers
minetest.register_node("nether:rack_deep", {
description = S("Deep Netherrack"),
_doc_items_longdesc = S("Netherrack from deep in the mantle"),
tiles = {"nether_rack_deep.png"},
is_ground_content = true,
groups = {cracky = 3, level = 2},
sounds = default.node_sound_stone_defaults(),
})
minetest.register_node("nether:sand", {
description = S("Nethersand"),
tiles = {"nether_sand.png"},
@ -95,6 +105,17 @@ minetest.register_node("nether:glowstone", {
sounds = default.node_sound_glass_defaults(),
})
-- Deep glowstone, found in the mantle / central magma layers
minetest.register_node("nether:glowstone_deep", {
description = S("Deep Glowstone"),
tiles = {"nether_glowstone_deep.png"},
is_ground_content = true,
light_source = 14,
paramtype = "light",
groups = {cracky = 3, oddly_breakable_by_hand = 3},
sounds = default.node_sound_glass_defaults(),
})
minetest.register_node("nether:brick", {
description = S("Nether Brick"),
tiles = {"nether_brick.png"},
@ -111,6 +132,15 @@ minetest.register_node("nether:brick_compressed", {
sounds = default.node_sound_stone_defaults(),
})
-- A decorative node which can only be obtained from dungeons or structures
minetest.register_node("nether:brick_cracked", {
description = S("Cracked Nether Brick"),
tiles = {"nether_brick_cracked.png"},
is_ground_content = false,
groups = {cracky = 2, level = 2},
sounds = default.node_sound_stone_defaults(),
})
local fence_texture =
"default_fence_overlay.png^nether_brick.png^default_fence_overlay.png^[makealpha:255,126,126"
@ -169,6 +199,350 @@ if minetest.get_modpath("moreblocks") then
end
-- Mantle nodes
-- Nether basalt is intended as a valuable material and possible portalstone - an alternative to
-- obsidian that's available for other mods to use.
-- It cannot be found in the regions of the nether where Nether portals link to, so requires a journey to obtain.
minetest.register_node("nether:basalt", {
description = S("Nether Basalt"),
_doc_items_longdesc = S("Columns of dark basalt found only in magma oceans deep within the Nether."),
tiles = {
"nether_basalt.png",
"nether_basalt.png",
"nether_basalt_side.png",
"nether_basalt_side.png",
"nether_basalt_side.png",
"nether_basalt_side.png"
},
is_ground_content = true,
groups = {cracky = 1, level = 3}, -- set proper digging times and uses, and maybe explosion immune if api handles that
on_blast = function() --[[blast proof]] end,
sounds = default.node_sound_stone_defaults(),
})
-- Potentially a portalstone, but will also be a stepping stone between basalt
-- and chiseled basalt.
-- It can only be introduced by the biomes-based mapgen, since it requires the
-- MT 5.0 world-align texture features.
minetest.register_node("nether:basalt_hewn", {
description = S("Hewn Basalt"),
_doc_items_longdesc = S("A rough cut solid block of Nether Basalt."),
tiles = {{
name = "nether_basalt_hewn.png",
align_style = "world",
scale = 2
}},
inventory_image = minetest.inventorycube(
"nether_basalt_hewn.png^[sheet:2x2:0,0",
"nether_basalt_hewn.png^[sheet:2x2:0,1",
"nether_basalt_hewn.png^[sheet:2x2:1,1"
),
is_ground_content = false,
groups = {cracky = 1, level = 2},
on_blast = function() --[[blast proof]] end,
sounds = default.node_sound_stone_defaults(),
})
-- Chiselled basalt is intended as a portalstone - an alternative to obsidian that's
-- available for other mods to use. It is crafted from Hewn Basalt.
-- It should only be introduced by the biomes-based mapgen, since in future it may
-- require the MT 5.0 world-align texture features.
minetest.register_node("nether:basalt_chiselled", {
description = S("Chiselled Basalt"),
_doc_items_longdesc = S("A finely finished block of solid Nether Basalt."),
tiles = {
"nether_basalt_chiselled_top.png",
"nether_basalt_chiselled_top.png" .. "^[transformFY",
"nether_basalt_chiselled_side.png",
"nether_basalt_chiselled_side.png",
"nether_basalt_chiselled_side.png",
"nether_basalt_chiselled_side.png"
},
inventory_image = minetest.inventorycube(
"nether_basalt_chiselled_top.png",
"nether_basalt_chiselled_side.png",
"nether_basalt_chiselled_side.png"
),
paramtype2 = "facedir",
is_ground_content = false,
groups = {cracky = 1, level = 2},
on_blast = function() --[[blast proof]] end,
sounds = default.node_sound_stone_defaults(),
})
-- Lava-sea source
-- This is a lava source using a different animated texture so that each node
-- is out of phase in its animation from its neighbor. This prevents the magma
-- ocean from visually clumping together into a patchwork of 16x16 squares.
-- It can only be used by the biomes-based mapgen, since it requires the MT 5.0
-- world-align texture features.
local lavasea_source = {}
local lava_source = minetest.registered_nodes["default:lava_source"]
for key, value in pairs(lava_source) do lavasea_source[key] = value end
lavasea_source.name = nil
lavasea_source.tiles = {
{
name = "nether_lava_source_animated.png",
backface_culling = false,
align_style = "world",
scale = 2,
animation = {
type = "vertical_frames",
aspect_w = 32,
aspect_h = 32,
length = 3.0,
},
},
{
name = "nether_lava_source_animated.png",
backface_culling = true,
align_style = "world",
scale = 2,
animation = {
type = "vertical_frames",
aspect_w = 32,
aspect_h = 32,
length = 3.0,
},
},
}
lavasea_source.liquid_alternative_source = "nether:lava_source"
lavasea_source.inventory_image = minetest.inventorycube(
"nether_lava_source_animated.png^[sheet:2x16:0,0",
"nether_lava_source_animated.png^[sheet:2x16:0,1",
"nether_lava_source_animated.png^[sheet:2x16:1,1"
)
minetest.register_node("nether:lava_source", lavasea_source)
-- a place to store the original ABM function so nether.cool_lava() can call it
local original_cool_lava_action
nether.cool_lava = function(pos, node)
local pos_above = {x = pos.x, y = pos.y + 1, z = pos.z}
local node_above = minetest.get_node(pos_above)
-- Evaporate water sitting above lava, if it's in the Nether.
-- (we don't want Nether mod to affect overworld lava mechanics)
if minetest.get_node_group(node_above.name, "water") > 0 and
pos.y < nether.DEPTH_CEILING and pos.y > nether.DEPTH_FLOOR then
-- cools_lava might be a better group to check for, but perhaps there's
-- something in that group that isn't a liquid and shouldn't be evaporated?
minetest.swap_node(pos_above, {name="air"})
end
-- add steam to cooling lava
minetest.add_particlespawner({
amount = 20,
time = 0.15,
minpos = {x=pos.x - 0.4, y=pos.y - 0, z=pos.z - 0.4},
maxpos = {x=pos.x + 0.4, y=pos.y + 0.5, z=pos.z + 0.4},
minvel = {x = -0.5, y = 0.5, z = -0.5},
maxvel = {x = 0.5, y = 1.5, z = 0.5},
minacc = {x = 0, y = 0.1, z = 0},
maxacc = {x = 0, y = 0.2, z = 0},
minexptime = 0.5,
maxexptime = 1.3,
minsize = 1.5,
maxsize = 3.5,
texture = "nether_particle_anim4.png",
animation = {
type = "vertical_frames",
aspect_w = 7,
aspect_h = 7,
length = 1.4,
}
})
if node.name == "nether:lava_source" or node.name == "nether:lava_crust" then
-- use swap_node to avoid triggering the lava_crust's after_destruct
minetest.swap_node(pos, {name = "nether:basalt"})
minetest.sound_play("default_cool_lava",
{pos = pos, max_hear_distance = 16, gain = 0.25}, true)
else
-- chain the original ABM action to handle conventional lava
original_cool_lava_action(pos, node)
end
end
minetest.register_on_mods_loaded(function()
-- register a bucket of Lava-sea source - but make it just the same bucket as default lava.
-- (by doing this in register_on_mods_loaded we don't need to declare a soft dependency)
if minetest.get_modpath("bucket") and minetest.global_exists("bucket") then
local lava_bucket = bucket.liquids["default:lava_source"]
if lava_bucket ~= nil then
local lavasea_bucket = {}
for key, value in pairs(lava_bucket) do lavasea_bucket[key] = value end
lavasea_bucket.source = "nether:lava_source"
bucket.liquids[lavasea_bucket.source] = lavasea_bucket
end
end
-- include "nether:lava_source" in any "default:lava_source" ABMs
local function include_nether_lava(set_of_nodes)
if (type(set_of_nodes) == "table") then
for _, nodename in pairs(set_of_nodes) do
if nodename == "default:lava_source" then
-- I'm amazed this works, but it does
table.insert(set_of_nodes, "nether:lava_source")
break;
end
end
end
end
for _, abm in pairs(minetest.registered_abms) do
include_nether_lava(abm.nodenames)
include_nether_lava(abm.neighbors)
if abm.label == "Lava cooling" and abm.action ~= nil then
-- lets have lava_crust cool as well
original_cool_lava_action = abm.action
abm.action = nether.cool_lava
table.insert(abm.nodenames, "nether:lava_crust")
end
end
for _, lbm in pairs(minetest.registered_lbms) do
include_nether_lava(lbm.nodenames)
end
--minetest.log("minetest.registered_abms" .. dump(minetest.registered_abms))
--minetest.log("minetest.registered_lbms" .. dump(minetest.registered_lbms))
end)
-- creates a lava splash, and leaves lava_source in place of the lava_crust
local function smash_lava_crust(pos, playsound)
local lava_particlespawn_def = {
amount = 6,
time = 0.1,
minpos = {x=pos.x - 0.5, y=pos.y + 0.3, z=pos.z - 0.5},
maxpos = {x=pos.x + 0.5, y=pos.y + 0.5, z=pos.z + 0.5},
minvel = {x = -1.5, y = 1.5, z = -1.5},
maxvel = {x = 1.5, y = 5, z = 1.5},
minacc = {x = 0, y = -10, z = 0},
maxacc = {x = 0, y = -10, z = 0},
minexptime = 1,
maxexptime = 1,
minsize = .2,
maxsize = .8,
texture = "^[colorize:#A00:255",
glow = 8
}
minetest.add_particlespawner(lava_particlespawn_def)
lava_particlespawn_def.texture = "^[colorize:#FB0:255"
lava_particlespawn_def.maxvel.y = 3
lava_particlespawn_def.glow = 12
minetest.add_particlespawner(lava_particlespawn_def)
minetest.set_node(pos, {name = "default:lava_source"})
if math.random(1, 3) == 1 and minetest.registered_nodes["fire:basic_flame"] ~= nil then
-- occasionally brief flames will be seen when breaking lava crust
local posAbove = {x = pos.x, y = pos.y + 1, z = pos.z}
if minetest.get_node(posAbove).name == "air" then
minetest.set_node(posAbove, {name = "fire:basic_flame"})
minetest.get_node_timer(posAbove):set(math.random(7, 15) / 10, 0)
--[[ commented out because the flame sound plays for too long
if minetest.global_exists("fire") and fire.update_player_sound ~= nil then
-- The fire mod only updates its sound every 3 seconds, these flames will be
-- out by then, so start the sound immediately
local players = minetest.get_connected_players()
for n = 1, #players do fire.update_player_sound(players[n]) end
end]]
end
end
if playsound then
minetest.sound_play(
"nether_lava_bubble",
-- this sample was encoded at 3x speed to reduce .ogg file size
-- at the expense of higher frequencies, so pitch it down ~3x
{pos = pos, pitch = 0.3, max_hear_distance = 8, gain = 0.4}
)
end
end
-- lava_crust nodes can only be used in the biomes-based mapgen, since they require
-- the MT 5.0 world-align texture features.
minetest.register_node("nether:lava_crust", {
description = S("Lava Crust"),
_doc_items_longdesc = S("A thin crust of cooled lava with liquid lava beneath"),
_doc_items_usagehelp = S("Lava crust is strong enough to walk on, but still hot enough to inflict burns."),
tiles = {
{
name="nether_lava_crust_animated.png",
backface_culling=true,
tileable_vertical=true,
tileable_horizontal=true,
align_style="world",
scale=2,
animation = {
type = "vertical_frames",
aspect_w = 32,
aspect_h = 32,
length = 1.8,
},
}
},
inventory_image = minetest.inventorycube(
"nether_lava_crust_animated.png^[sheet:2x48:0,0",
"nether_lava_crust_animated.png^[sheet:2x48:0,1",
"nether_lava_crust_animated.png^[sheet:2x48:1,1"
),
collision_box = {
type = "fixed",
fixed = {
-- Damage is calculated "starting 0.1 above feet
-- and progressing upwards in 1 node intervals", so
-- lower this node's collision box by more than 0.1
-- to ensure damage will be taken when standing on
-- the node.
{-0.5, -0.5, -0.5, 0.5, 0.39, 0.5}
},
},
selection_box = {
type = "fixed",
fixed = {
-- Keep the selection box matching the visual node,
-- rather than the collision_box.
{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
},
},
after_destruct = function(pos, oldnode)
smash_lava_crust(pos, true)
end,
after_dig_node = function(pos, oldnode, oldmetadata, digger)
end,
on_blast = function(pos, intensity)
smash_lava_crust(pos, false)
end,
paramtype = "light",
light_source = default.LIGHT_MAX - 3,
buildable_to = false,
walkable_to = true,
is_ground_content = true,
drop = {
items = {{
-- Allow SilkTouch-esque "pickaxes of preservation" to mine the lava crust intact, if PR #10141 gets merged.
tools = {"this line will block early MT versions which don't respect the tool_groups restrictions"},
tool_groups = {{"pickaxe", "preservation"}},
items = {"nether:lava_crust"}
}}
},
--liquid_viscosity = 7,
damage_per_second = 2,
groups = {oddly_breakable_by_hand = 3, cracky = 3, explody = 1, igniter = 1},
})
-- Fumaroles (Chimney's)
local function fumarole_startTimer(pos, timeout_factor)
@ -309,7 +683,9 @@ end
minetest.register_node("nether:fumarole", {
description="Fumarolic Chimney",
description=S("Fumarolic Chimney"),
_doc_items_longdesc = S("A vent in the earth emitting steam and gas"),
_doc_items_usagehelp = S("Can be repurposed to provide puffs of smoke in a chimney"),
tiles = {"nether_rack.png"},
on_timer = fumarole_onTimer,
after_place_node = function(pos, placer, itemstack, pointed_thing)
@ -333,7 +709,9 @@ minetest.register_node("nether:fumarole", {
})
minetest.register_node("nether:fumarole_slab", {
description="Fumarolic Chimney Slab",
description=S("Fumarolic Chimney Slab"),
_doc_items_longdesc = S("A vent in the earth emitting steam and gas"),
_doc_items_usagehelp = S("Can be repurposed to provide puffs of smoke in a chimney"),
tiles = {"nether_rack.png"},
is_ground_content = true,
on_timer = fumarole_onTimer,
@ -358,7 +736,7 @@ minetest.register_node("nether:fumarole_slab", {
})
minetest.register_node("nether:fumarole_corner", {
description="Fumarolic Chimney Corner",
description=S("Fumarolic Chimney Corner"),
tiles = {"nether_rack.png"},
is_ground_content = true,
groups = {cracky = 3, level = 2, fumarole=1},
@ -393,31 +771,3 @@ local airlike_darkness = {}
for k,v in pairs(minetest.registered_nodes["air"]) do airlike_darkness[k] = v end
airlike_darkness.paramtype = "none"
minetest.register_node("nether:airlike_darkness", airlike_darkness)
-- Crafting
minetest.register_craft({
output = "nether:brick 4",
recipe = {
{"nether:rack", "nether:rack"},
{"nether:rack", "nether:rack"},
}
})
minetest.register_craft({
output = "nether:fence_nether_brick 6",
recipe = {
{"nether:brick", "nether:brick", "nether:brick"},
{"nether:brick", "nether:brick", "nether:brick"},
},
})
minetest.register_craft({
output = "nether:brick_compressed",
recipe = {
{"nether:brick","nether:brick","nether:brick"},
{"nether:brick","nether:brick","nether:brick"},
{"nether:brick","nether:brick","nether:brick"},
}
})

3
portal_api.txt
View File

@ -22,6 +22,9 @@ one kind of portal with the same frame material — such as obsidian — provide
the size of the PortalShape is distinct from any other type of portal that is
using the same node for its frame, and portal sizes remain small.
The Nether provides three variants of Nether basalt to ensure there are
alternatives to obsidian for other mods to use as portalstones.
Realms
------

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19
tools.lua
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@ -1,3 +1,22 @@
--[[
Copyright (C) 2020 lortas
Permission to use, copy, modify, and/or distribute this software for
any purpose with or without fee is hereby granted, provided that the
above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR
BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
SOFTWARE.
]]--
local S = nether.get_translator
minetest.register_tool("nether:pick_nether", {