Mystcraft - User contributions [en]

v0.13:CraftTweaker

2018-09-03T16:27:01Z

Keybounce: Tyop

''CraftTweaker'' is a mod that allows certain aspects of specific mods to be edited through the use of scripts. ''Mystcraft'' includes ''CraftTweaker'' integration for the creation of custom Pages, but there are also other uses. ''CraftTweaker'' scripts are files with a ".zs" extension that are placed in the "scripts" folder of a ''Minecraft'' instance. The same file must also be present on a server if playing online. The scripts are only loaded during startup, so ''Minecraft'' must be restarted to see changes made to a script.

__TOC__

== Custom Block Pages ==

''Mystcraft'' supports adding new block Pages through ''CraftTweaker''. There are several blocks, even in vanilla ''Minecraft'', that do not have corresponding Pages by default. A short script will allow you to add support for as many of these blocks as you would like. Mod blocks are also supported.

<pre>
import mods.mystcraft.CTAgeSymbol;
import mods.mystcraft.symbol.CTBlockSymbol;

static newBlockSymbol as CTBlockSymbol = CTAgeSymbol.createBlockSymbol("Balance", <minecraft:diamond_block>.asBlock().definition.defaultState, CRank);

newBlockSymbol.addCategory("mystcraft", "BlockTerrain", GRank);

newBlockSymbol.register();
</pre>

There are several variables here that need to be replaced:
# CRank and GRank are (small integers) the card (loot) rank and grammar (random expansion) ranks. 3 is "typically once an age", for things like standard world or normal sun. Really imbalancing things should be 5 or 6.
# "Balance" can be any known Narayani word. For a complete list of canonical Narayni words, see [http://isomerica.net/~mlah/narayan/symbols.html http://isomerica.net/~mlah/narayan/symbols.html]. Any string can be used, and an appropriate symbol will be generated.
# <minecraft:diamond_block> can be any block. Remember to use the appropriate Mod ID for the mod that adds the block.
# "BlockTerrain" can be any block category that Mystcraft currently supports. Your options are:
#* BlockAny
#* BlockSolid
#* BlockFluid
#* BlockGas
#* BlockTerrain
#* BlockStructure
#* BlockOrganic
#* BlockCrystal
#* BlockSea

== Bottling Machine (''Immersive Engineering'') ==
''Immersive Engineering'' includes a Bottling Machine that can bottle liquids automatically so long as fluid is inputted to the machine. To add support for bottling Black Ink into Ink Vials, use this script:

<pre>
import mods.immersiveengineering.BottlingMachine;

BottlingMachine.addRecipe(<mystcraft:vial>, <minecraft:glass_bottle>, <liquid:myst.ink.black> * 250);
</pre>

The "250" will yield four Ink Vials for every 1000mb of Black Ink (or four Ink Vials for every Black Ink Block). It may be changed to any positive integer for different yields.

v0.13:CraftTweaker

2018-09-03T16:26:07Z

Keybounce: Trying to define card/grammar rank values

''CraftTweaker'' is a mod that allows certain aspects of specific mods to be edited through the use of scripts. ''Mystcraft'' includes ''CraftTweaker'' integration for the creation of custom Pages, but there are also other uses. ''CraftTweaker'' scripts are files with a ".zs" extension that are placed in the "scripts" folder of a ''Minecraft'' instance. The same file must also be present on a server if playing online. The scripts are only loaded during startup, so ''Minecraft'' must be restarted to see changes made to a script.

__TOC__

== Custom Block Pages ==

''Mystcraft'' supports adding new block Pages through ''CraftTweaker''. There are several blocks, even in vanilla ''Minecraft'', that do not have corresponding Pages by default. A short script will allow you to add support for as many of these blocks as you would like. Mod blocks are also supported.

<pre>
import mods.mystcraft.CTAgeSymbol;
import mods.mystcraft.symbol.CTBlockSymbol;

static newBlockSymbol as CTBlockSymbol = CTAgeSymbol.createBlockSymbol("Balance", <minecraft:diamond_block>.asBlock().definition.defaultState, CRank);

newBlockSymbol.addCategory("mystcraft", "BlockTerrain", GRank);

newBlockSymbol.register();
</pre>

There are several variables here that need to be replaced:
# CRank and GRank are (small integers) the card (loot) rank and grammar (random expansion) ranks. 3 is "typically once an age", for things like standard world or normal sun. Really imbalancing things should be 5 or 6.
# "Balance" can be any known Narayani word. For a complete list of canonical Narayni words, see [http://isomerica.net/~mlah/narayan/symbols.html
http://isomerica.net/~mlah/narayan/symbols.html]. Any string can be used, and an appropriate symbol will be generated.
# <minecraft:diamond_block> can be any block. Remember to use the appropriate Mod ID for the mod that adds the block.
# "BlockTerrain" can be any block category that Mystcraft currently supports. Your options are:
#* BlockAny
#* BlockSolid
#* BlockFluid
#* BlockGas
#* BlockTerrain
#* BlockStructure
#* BlockOrganic
#* BlockCrystal
#* BlockSea

== Bottling Machine (''Immersive Engineering'') ==
''Immersive Engineering'' includes a Bottling Machine that can bottle liquids automatically so long as fluid is inputted to the machine. To add support for bottling Black Ink into Ink Vials, use this script:

<pre>
import mods.immersiveengineering.BottlingMachine;

BottlingMachine.addRecipe(<mystcraft:vial>, <minecraft:glass_bottle>, <liquid:myst.ink.black> * 250);
</pre>

The "250" will yield four Ink Vials for every 1000mb of Black Ink (or four Ink Vials for every Black Ink Block). It may be changed to any positive integer for different yields.

v0.13:Writing

2018-08-21T02:00:31Z

Keybounce: Overworld clone recipe dug up via google search

{{av}}

== Grammar and Stable Writing ==

In order to better control the results of your writing, you will need to understand the Grammar. It’s best to plan out what kind of world you want in advance and make sure you satisfy as much of the grammar as possible.

Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded. This is similar to if you provided the words "red" "dog" "ball" and a sentence generator expanded it to "The red dog plays with the ball". The grammar expansion is random, and may form different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion. These expansions are done similar to [https://en.wikipedia.org/wiki/Parse_tree sentence tree structures].

The more detail provided initially, the less the universe will inject new variations to what has been written. Writing "The red dog plays with the ball" leaves far fewer options for expansion; usually the remaining expansions take the form of modifiers. "The big, red dog plays with the ball" or "The red dog plays with the ball in the yard" would be valid expansions of the English sentence.

Making mistakes, including conflicting or paradoxical passages, or attempting to write an Age with overabundant resources or advantages will result in an Age with [[Instability]]. Additionally, if the grammar is unsatisfied, symbols may be added to the age which may add instability.

''Modifier Pages'' come before the '''Modified Page''' in the symbol order; similar to ''Adjectives'' and '''Nouns''' in English.
*"This is a ''Red'' '''Ball'''." is correct, whereas "This is a '''Ball''' ''Red''." would be grammatically incorrect.

== Standard Age ==

A "Standard Age" layout and recommend page order example is given below. For ease of identifying which pages modify others, ''Modifier Pages will be in Italics'', '''Modified Pages shown in Bold''' and finally pages that both ''Modify'' and can be '''Modified''' will be in both '''''Bold and Italics''''':

=== Link Panel ===

Link Panel Page,
*(May have additional properties added via the [[Ink Mixer]])

=== Terrain and World Type ===

''Biome Pages'', '''Biome Distribution Page'''

''Block Page''
*(Generates Terrain, replaces Stone/Dirt),

''Block Page or No Seas Page''
*(Generates Seas, replaces Water),

'''World Type Page'''

=== Weather Type and Light Level ===

Weather Page,
*(or replace with "No Weather" Page)

Lighting Page

=== Celestials ===

(Optional: Color Pages, Sunset Color Page)
'''''Length Pages, Direction Pages, Phase Pages,''''' '''Normal Sun''',
*(If no Sun, replace entire with Dark Sun)

(Optional: '''''Color Pages''''', '''''Sunset Color Page''''')
Length Pages, Direction Pages, Phase Pages, Normal Moon,
*(If no Moon, replace line with Dark Moon)

(Optional: '''''Length''''' and '''''Direction Pages''''')
'''''Color Pages''''', '''Star Page'''
*(If no stars, replace line with Dark Stars)

=== Visuals ===

'''''Color Pages''''', '''Sky Color'''
*(Or replace line with Natural Sky Color)

'''''Color Pages''''', '''Night Sky Color'''
*(For Default Night Sky, use Black Color)

'''''Color Pages''''', '''Fog Color'''
*(Or replace line with Natural Fog Color)

'''''Color Pages''''', '''Cloud Color'''
*(Or replace line with Natural Cloud Color)

'''''Color Pages''''', '''Water Color'''
*(Or replace line with Natural Water Color)

'''''Color Pages''''', '''Foliage Color'''
*(Or replace line with Natural Foliage Color)

'''''Color Pages''''', '''Grass Color'''
*(Or replace line with Natural Grass Color)

(Optional: Boundless Sky and/or Rainbow Pages)

=== World Features and Structures ===

'''Large Feature, Medium Feature, Small Feature,'''
*(Or replace with Lacking X Feature, however Lacking Small/Meduim Features will result in some instability)
**(Features will sometimes accept ''Block Pages'' to generate the material, '''Floating Islands''' also accepts a ''Biome Page'')

=== Effects ===

(Optional: Effects Pages)

'''Clear Modifiers Page''' 
'''Clear Modifiers''' is optional but reduces the chances of the age being violently unstable due to unused modifiers. It generates a small amount of instability for every “dangling” or “unused” ''Modifier'' page it accepts. This can be used as a “safety net” at the end of complex passages to clear all modifiers if you are unsure of your grammar.

In practice, unused modifiers are assigned usages by the grammar, so there are rarely unused modifiers by the time this symbol is applied.

=== Gradients ===

"Gradient" is an optional page that can be used to change Sunset, Stars, Sky, Night Sky, Fog, and Cloud color, and have them shift between colors over a certain length of time.

Example format with three alternating colors in the sky:

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 1)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 2)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 3)

'''Sky Color Page'''

Length determines how long a color will last before it's completely faded to the next color, and color page mixing are standard Mystcraft rules. You must have at least two colors to alternate between but you may add as many as needed.
*Length seems to be half as long as Celestial lengths for gradients, if you wanted to sync a color shift to a celestial, you can include the same Length pages for both.
**(Example: ''''Red Color''''', '''''Full Length''''', '''Gradient Page''' would sync to a Celestial also using only "Full Length" for it's movement.)

=== Additional Notes ===

* '''"Replace line"''' in the above example means '''"Remove that page and all its modifier pages, the replacement page accepts 0 modifiers"'''

* Additional Celestials, Features and Effects can be added, as long as they remain in the correct format.

* Native Biome Distribution, Natural X Color pages, and Dark Celestials accept no modifiers.

* Any optional sections you decide to leave out may be randomized for you, the Grammar will not be satisfied for those sections, the more specific you are the less is left to chance.
** For an age to be “stable” it must use no pages that generate base instability, and must not have excessive ores in the ground (compared to the overworld).
*** It is common to have “pseudo-stable” ages with some instability, but not enough for world-destroying effects. This can happen just by adding glowstone (for example) to an overworld-like age, as glowstone is not a normal resource in the overworld.
*** An age an be made "more stable" by adding pages that reduce instability. For example, an age with "Charged" will have lighting strikes, but will have less instability.

* Effects will not be added randomly unless the age is unstable due to either greedy pages like "Accelerated", or grammar errors, or excessive ores/fluids in the ground.
** There are pages that will add instability, anything that adds ores or other rare resources, or give some form of advantage to the player will generally cause instability.
*** Pages like Dense Ores, Diamond Ore Block, etc. *may* create a lot of instability.
: As a quick counter example, "void world, dense ores, diamond ore block, obelisks" will not. Since it is void, there is no stone to be turned into ores by dense ores; since there is no land, there are no obelisks. It is not that these pages generate instability, it is the effect in the world. {{format-help}}
*** Ages with Acceleration will cause instability, because it makes farms more efficient.
*** Ages with Bright Lighting will cause instability, because they are easier to mine in.

Remember, instability is not automatically decay. Early instability effects are almost always surface status effects. A cave world, with glowstone, and bright lighting, might not have any noticeable effect inside the cave itself.

== XComp's Notes ==
* "Some symbols function as modifiers for other modifiers" (ex. Red Color can mix with other colors, Half Length with other lengths, North Direction with other directions, etc).
* "Modifiers come before the symbol they modify"
* "Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded"
** "This is similar to if you provided the words "red" "dog" "ball" and the universe expanded it to "The red dog plays with the ball". The grammar expansion is random, and may take different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion."
* "Not fully satisfying the grammar won't produce instability directly. The symbols added by the grammar might, however."

== Version Compatibility ==
*The grammar system above is current for Mystcraft Versions 0.12 through Current [https://minecraft.curseforge.com/projects/mystcraft/files (Latest Builds)]

== Overworld Clone ==

An approximate clone of the overworld is

{{verify}}

Water block, Stone block, Standard World, 
Normal Lighting, Normal Weather, 
Natural cloud color, 
Natural fog color, 
Natural foliage color, 
Natural grass color, 
Natural sky color, 
Natural water color, 
Blue color, Black color, Black color, Night sky color, 
Yellow Color, Red Color, Full Length, Gradient, Sunset Color, 
Native Biome Controller, 
Full Length, Rising Phase, East Direction, Normal Sun, 
White Color, Full Length, Gradient, East Direction, Normal Stars, 
Full Length, Setting, East, Normal Moon, 
Caves, Ravines, Mineshafts, Strongholds, Villages, Dungeons, 
Water Block, Surface Lakes, Lava Block, Deep Lakes

== Graphical Images ==

[[File:Symbols.jpg]]

[[File:Symbols2.jpg]]

v0.13:Writing

2018-08-10T22:26:35Z

Keybounce: /* Graphical Images */

{{av}}

== Grammar and Stable Writing ==

In order to better control the results of your writing, you will need to understand the Grammar. It’s best to plan out what kind of world you want in advance and make sure you satisfy as much of the grammar as possible.

Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded. This is similar to if you provided the words "red" "dog" "ball" and a sentence generator expanded it to "The red dog plays with the ball". The grammar expansion is random, and may form different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion. These expansions are done similar to [https://en.wikipedia.org/wiki/Parse_tree sentence tree structures].

The more detail provided initially, the less the universe will inject new variations to what has been written. Writing "The red dog plays with the ball" leaves far fewer options for expansion; usually the remaining expansions take the form of modifiers. "The big, red dog plays with the ball" or "The red dog plays with the ball in the yard" would be valid expansions of the English sentence.

Making mistakes, including conflicting or paradoxical passages, or attempting to write an Age with overabundant resources or advantages will result in an Age with [[Instability]]. Additionally, if the grammar is unsatisfied, symbols may be added to the age which may add instability.

''Modifier Pages'' come before the '''Modified Page''' in the symbol order; similar to ''Adjectives'' and '''Nouns''' in English.
*"This is a ''Red'' '''Ball'''." is correct, whereas "This is a '''Ball''' ''Red''." would be grammatically incorrect.

== Standard Age ==

A "Standard Age" layout and recommend page order example is given below. For ease of identifying which pages modify others, ''Modifier Pages will be in Italics'', '''Modified Pages shown in Bold''' and finally pages that both ''Modify'' and can be '''Modified''' will be in both '''''Bold and Italics''''':

=== Link Panel ===

Link Panel Page,
*(May have additional properties added via the [[Ink Mixer]])

=== Terrain and World Type ===

''Biome Pages'', '''Biome Distribution Page'''

''Block Page''
*(Generates Terrain, replaces Stone/Dirt),

''Block Page or No Seas Page''
*(Generates Seas, replaces Water),

'''World Type Page'''

=== Weather Type and Light Level ===

Weather Page,
*(or replace with "No Weather" Page)

Lighting Page

=== Celestials ===

(Optional: Color Pages, Sunset Color Page)
'''''Length Pages, Direction Pages, Phase Pages,''''' '''Normal Sun''',
*(If no Sun, replace entire with Dark Sun)

(Optional: '''''Color Pages''''', '''''Sunset Color Page''''')
Length Pages, Direction Pages, Phase Pages, Normal Moon,
*(If no Moon, replace line with Dark Moon)

(Optional: '''''Length''''' and '''''Direction Pages''''')
'''''Color Pages''''', '''Star Page'''
*(If no stars, replace line with Dark Stars)

=== Visuals ===

'''''Color Pages''''', '''Sky Color'''
*(Or replace line with Natural Sky Color)

'''''Color Pages''''', '''Night Sky Color'''
*(For Default Night Sky, use Black Color)

'''''Color Pages''''', '''Fog Color'''
*(Or replace line with Natural Fog Color)

'''''Color Pages''''', '''Cloud Color'''
*(Or replace line with Natural Cloud Color)

'''''Color Pages''''', '''Water Color'''
*(Or replace line with Natural Water Color)

'''''Color Pages''''', '''Foliage Color'''
*(Or replace line with Natural Foliage Color)

'''''Color Pages''''', '''Grass Color'''
*(Or replace line with Natural Grass Color)

(Optional: Boundless Sky and/or Rainbow Pages)

=== World Features and Structures ===

'''Large Feature, Medium Feature, Small Feature,'''
*(Or replace with Lacking X Feature, however Lacking Small/Meduim Features will result in some instability)
**(Features will sometimes accept ''Block Pages'' to generate the material, '''Floating Islands''' also accepts a ''Biome Page'')

=== Effects ===

(Optional: Effects Pages)

'''Clear Modifiers Page''' 
'''Clear Modifiers''' is optional but reduces the chances of the age being violently unstable due to unused modifiers. It generates a small amount of instability for every “dangling” or “unused” ''Modifier'' page it accepts. This can be used as a “safety net” at the end of complex passages to clear all modifiers if you are unsure of your grammar.

In practice, unused modifiers are assigned usages by the grammar, so there are rarely unused modifiers by the time this symbol is applied.

=== Gradients ===

"Gradient" is an optional page that can be used to change Sunset, Stars, Sky, Night Sky, Fog, and Cloud color, and have them shift between colors over a certain length of time.

Example format with three alternating colors in the sky:

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 1)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 2)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 3)

'''Sky Color Page'''

Length determines how long a color will last before it's completely faded to the next color, and color page mixing are standard Mystcraft rules. You must have at least two colors to alternate between but you may add as many as needed.
*Length seems to be half as long as Celestial lengths for gradients, if you wanted to sync a color shift to a celestial, you can include the same Length pages for both.
**(Example: ''''Red Color''''', '''''Full Length''''', '''Gradient Page''' would sync to a Celestial also using only "Full Length" for it's movement.)

=== Additional Notes ===

* '''"Replace line"''' in the above example means '''"Remove that page and all its modifier pages, the replacement page accepts 0 modifiers"'''

* Additional Celestials, Features and Effects can be added, as long as they remain in the correct format.

* Native Biome Distribution, Natural X Color pages, and Dark Celestials accept no modifiers.

* Any optional sections you decide to leave out may be randomized for you, the Grammar will not be satisfied for those sections, the more specific you are the less is left to chance.
** For an age to be “stable” it must use no pages that generate base instability, and must not have excessive ores in the ground (compared to the overworld).
*** It is common to have “pseudo-stable” ages with some instability, but not enough for world-destroying effects. This can happen just by adding glowstone (for example) to an overworld-like age, as glowstone is not a normal resource in the overworld.
*** An age an be made "more stable" by adding pages that reduce instability. For example, an age with "Charged" will have lighting strikes, but will have less instability.

* Effects will not be added randomly unless the age is unstable due to either greedy pages like "Accelerated", or grammar errors, or excessive ores/fluids in the ground.
** There are pages that will add instability, anything that adds ores or other rare resources, or give some form of advantage to the player will generally cause instability.
*** Pages like Dense Ores, Diamond Ore Block, etc. *may* create a lot of instability.
: As a quick counter example, "void world, dense ores, diamond ore block, obelisks" will not. Since it is void, there is no stone to be turned into ores by dense ores; since there is no land, there are no obelisks. It is not that these pages generate instability, it is the effect in the world. {{format-help}}
*** Ages with Acceleration will cause instability, because it makes farms more efficient.
*** Ages with Bright Lighting will cause instability, because they are easier to mine in.

Remember, instability is not automatically decay. Early instability effects are almost always surface status effects. A cave world, with glowstone, and bright lighting, might not have any noticeable effect inside the cave itself.

== XComp's Notes ==
* "Some symbols function as modifiers for other modifiers" (ex. Red Color can mix with other colors, Half Length with other lengths, North Direction with other directions, etc).
* "Modifiers come before the symbol they modify"
* "Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded"
** "This is similar to if you provided the words "red" "dog" "ball" and the universe expanded it to "The red dog plays with the ball". The grammar expansion is random, and may take different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion."
* "Not fully satisfying the grammar won't produce instability directly. The symbols added by the grammar might, however."

== Version Compatibility ==
*The grammar system above is current for Mystcraft Versions 0.12 through Current [https://minecraft.curseforge.com/projects/mystcraft/files (Latest Builds)]

== Graphical Images ==

[[File:Symbols.jpg]]

[[File:Symbols2.jpg]]

File:Symbols2.jpg

2018-08-10T22:24:30Z

Keybounce:

File:Symbols.jpg

2018-08-10T22:23:39Z

Keybounce:

v0.13:Writing

2018-08-10T22:22:27Z

Keybounce: /* Graphical Images */

{{av}}

== Grammar and Stable Writing ==

In order to better control the results of your writing, you will need to understand the Grammar. It’s best to plan out what kind of world you want in advance and make sure you satisfy as much of the grammar as possible.

Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded. This is similar to if you provided the words "red" "dog" "ball" and a sentence generator expanded it to "The red dog plays with the ball". The grammar expansion is random, and may form different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion. These expansions are done similar to [https://en.wikipedia.org/wiki/Parse_tree sentence tree structures].

The more detail provided initially, the less the universe will inject new variations to what has been written. Writing "The red dog plays with the ball" leaves far fewer options for expansion; usually the remaining expansions take the form of modifiers. "The big, red dog plays with the ball" or "The red dog plays with the ball in the yard" would be valid expansions of the English sentence.

Making mistakes, including conflicting or paradoxical passages, or attempting to write an Age with overabundant resources or advantages will result in an Age with [[Instability]]. Additionally, if the grammar is unsatisfied, symbols may be added to the age which may add instability.

''Modifier Pages'' come before the '''Modified Page''' in the symbol order; similar to ''Adjectives'' and '''Nouns''' in English.
*"This is a ''Red'' '''Ball'''." is correct, whereas "This is a '''Ball''' ''Red''." would be grammatically incorrect.

== Standard Age ==

A "Standard Age" layout and recommend page order example is given below. For ease of identifying which pages modify others, ''Modifier Pages will be in Italics'', '''Modified Pages shown in Bold''' and finally pages that both ''Modify'' and can be '''Modified''' will be in both '''''Bold and Italics''''':

=== Link Panel ===

Link Panel Page,
*(May have additional properties added via the [[Ink Mixer]])

=== Terrain and World Type ===

''Biome Pages'', '''Biome Distribution Page'''

''Block Page''
*(Generates Terrain, replaces Stone/Dirt),

''Block Page or No Seas Page''
*(Generates Seas, replaces Water),

'''World Type Page'''

=== Weather Type and Light Level ===

Weather Page,
*(or replace with "No Weather" Page)

Lighting Page

=== Celestials ===

(Optional: Color Pages, Sunset Color Page)
'''''Length Pages, Direction Pages, Phase Pages,''''' '''Normal Sun''',
*(If no Sun, replace entire with Dark Sun)

(Optional: '''''Color Pages''''', '''''Sunset Color Page''''')
Length Pages, Direction Pages, Phase Pages, Normal Moon,
*(If no Moon, replace line with Dark Moon)

(Optional: '''''Length''''' and '''''Direction Pages''''')
'''''Color Pages''''', '''Star Page'''
*(If no stars, replace line with Dark Stars)

=== Visuals ===

'''''Color Pages''''', '''Sky Color'''
*(Or replace line with Natural Sky Color)

'''''Color Pages''''', '''Night Sky Color'''
*(For Default Night Sky, use Black Color)

'''''Color Pages''''', '''Fog Color'''
*(Or replace line with Natural Fog Color)

'''''Color Pages''''', '''Cloud Color'''
*(Or replace line with Natural Cloud Color)

'''''Color Pages''''', '''Water Color'''
*(Or replace line with Natural Water Color)

'''''Color Pages''''', '''Foliage Color'''
*(Or replace line with Natural Foliage Color)

'''''Color Pages''''', '''Grass Color'''
*(Or replace line with Natural Grass Color)

(Optional: Boundless Sky and/or Rainbow Pages)

=== World Features and Structures ===

'''Large Feature, Medium Feature, Small Feature,'''
*(Or replace with Lacking X Feature, however Lacking Small/Meduim Features will result in some instability)
**(Features will sometimes accept ''Block Pages'' to generate the material, '''Floating Islands''' also accepts a ''Biome Page'')

=== Effects ===

(Optional: Effects Pages)

'''Clear Modifiers Page''' 
'''Clear Modifiers''' is optional but reduces the chances of the age being violently unstable due to unused modifiers. It generates a small amount of instability for every “dangling” or “unused” ''Modifier'' page it accepts. This can be used as a “safety net” at the end of complex passages to clear all modifiers if you are unsure of your grammar.

In practice, unused modifiers are assigned usages by the grammar, so there are rarely unused modifiers by the time this symbol is applied.

=== Gradients ===

"Gradient" is an optional page that can be used to change Sunset, Stars, Sky, Night Sky, Fog, and Cloud color, and have them shift between colors over a certain length of time.

Example format with three alternating colors in the sky:

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 1)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 2)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 3)

'''Sky Color Page'''

Length determines how long a color will last before it's completely faded to the next color, and color page mixing are standard Mystcraft rules. You must have at least two colors to alternate between but you may add as many as needed.
*Length seems to be half as long as Celestial lengths for gradients, if you wanted to sync a color shift to a celestial, you can include the same Length pages for both.
**(Example: ''''Red Color''''', '''''Full Length''''', '''Gradient Page''' would sync to a Celestial also using only "Full Length" for it's movement.)

=== Additional Notes ===

* '''"Replace line"''' in the above example means '''"Remove that page and all its modifier pages, the replacement page accepts 0 modifiers"'''

* Additional Celestials, Features and Effects can be added, as long as they remain in the correct format.

* Native Biome Distribution, Natural X Color pages, and Dark Celestials accept no modifiers.

* Any optional sections you decide to leave out may be randomized for you, the Grammar will not be satisfied for those sections, the more specific you are the less is left to chance.
** For an age to be “stable” it must use no pages that generate base instability, and must not have excessive ores in the ground (compared to the overworld).
*** It is common to have “pseudo-stable” ages with some instability, but not enough for world-destroying effects. This can happen just by adding glowstone (for example) to an overworld-like age, as glowstone is not a normal resource in the overworld.
*** An age an be made "more stable" by adding pages that reduce instability. For example, an age with "Charged" will have lighting strikes, but will have less instability.

* Effects will not be added randomly unless the age is unstable due to either greedy pages like "Accelerated", or grammar errors, or excessive ores/fluids in the ground.
** There are pages that will add instability, anything that adds ores or other rare resources, or give some form of advantage to the player will generally cause instability.
*** Pages like Dense Ores, Diamond Ore Block, etc. *may* create a lot of instability.
: As a quick counter example, "void world, dense ores, diamond ore block, obelisks" will not. Since it is void, there is no stone to be turned into ores by dense ores; since there is no land, there are no obelisks. It is not that these pages generate instability, it is the effect in the world. {{format-help}}
*** Ages with Acceleration will cause instability, because it makes farms more efficient.
*** Ages with Bright Lighting will cause instability, because they are easier to mine in.

Remember, instability is not automatically decay. Early instability effects are almost always surface status effects. A cave world, with glowstone, and bright lighting, might not have any noticeable effect inside the cave itself.

== XComp's Notes ==
* "Some symbols function as modifiers for other modifiers" (ex. Red Color can mix with other colors, Half Length with other lengths, North Direction with other directions, etc).
* "Modifiers come before the symbol they modify"
* "Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded"
** "This is similar to if you provided the words "red" "dog" "ball" and the universe expanded it to "The red dog plays with the ball". The grammar expansion is random, and may take different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion."
* "Not fully satisfying the grammar won't produce instability directly. The symbols added by the grammar might, however."

== Version Compatibility ==
*The grammar system above is current for Mystcraft Versions 0.12 through Current [https://minecraft.curseforge.com/projects/mystcraft/files (Latest Builds)]

== Graphical Images ==
https://web.archive.org/web/20160603083617im_/http://binarymage.com/wiki/lib/exe/fetch.php?media=writing:summary:diapositiva1.jpg

[[File:Symbols.jpg]]

https://web.archive.org/web/20160603131438im_/http://binarymage.com/wiki/lib/exe/fetch.php?media=writing:summary:diapositiva2.jpg

[[File:Symbols2.jpg]]

v0.13:Writing

2018-08-10T22:13:25Z

Keybounce: Wiki Help! How do I link to external images?

{{av}}

== Grammar and Stable Writing ==

In order to better control the results of your writing, you will need to understand the Grammar. It’s best to plan out what kind of world you want in advance and make sure you satisfy as much of the grammar as possible.

Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded. This is similar to if you provided the words "red" "dog" "ball" and a sentence generator expanded it to "The red dog plays with the ball". The grammar expansion is random, and may form different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion. These expansions are done similar to [https://en.wikipedia.org/wiki/Parse_tree sentence tree structures].

The more detail provided initially, the less the universe will inject new variations to what has been written. Writing "The red dog plays with the ball" leaves far fewer options for expansion; usually the remaining expansions take the form of modifiers. "The big, red dog plays with the ball" or "The red dog plays with the ball in the yard" would be valid expansions of the English sentence.

Making mistakes, including conflicting or paradoxical passages, or attempting to write an Age with overabundant resources or advantages will result in an Age with [[Instability]]. Additionally, if the grammar is unsatisfied, symbols may be added to the age which may add instability.

''Modifier Pages'' come before the '''Modified Page''' in the symbol order; similar to ''Adjectives'' and '''Nouns''' in English.
*"This is a ''Red'' '''Ball'''." is correct, whereas "This is a '''Ball''' ''Red''." would be grammatically incorrect.

== Standard Age ==

A "Standard Age" layout and recommend page order example is given below. For ease of identifying which pages modify others, ''Modifier Pages will be in Italics'', '''Modified Pages shown in Bold''' and finally pages that both ''Modify'' and can be '''Modified''' will be in both '''''Bold and Italics''''':

=== Link Panel ===

Link Panel Page,
*(May have additional properties added via the [[Ink Mixer]])

=== Terrain and World Type ===

''Biome Pages'', '''Biome Distribution Page'''

''Block Page''
*(Generates Terrain, replaces Stone/Dirt),

''Block Page or No Seas Page''
*(Generates Seas, replaces Water),

'''World Type Page'''

=== Weather Type and Light Level ===

Weather Page,
*(or replace with "No Weather" Page)

Lighting Page

=== Celestials ===

(Optional: Color Pages, Sunset Color Page)
'''''Length Pages, Direction Pages, Phase Pages,''''' '''Normal Sun''',
*(If no Sun, replace entire with Dark Sun)

(Optional: '''''Color Pages''''', '''''Sunset Color Page''''')
Length Pages, Direction Pages, Phase Pages, Normal Moon,
*(If no Moon, replace line with Dark Moon)

(Optional: '''''Length''''' and '''''Direction Pages''''')
'''''Color Pages''''', '''Star Page'''
*(If no stars, replace line with Dark Stars)

=== Visuals ===

'''''Color Pages''''', '''Sky Color'''
*(Or replace line with Natural Sky Color)

'''''Color Pages''''', '''Night Sky Color'''
*(For Default Night Sky, use Black Color)

'''''Color Pages''''', '''Fog Color'''
*(Or replace line with Natural Fog Color)

'''''Color Pages''''', '''Cloud Color'''
*(Or replace line with Natural Cloud Color)

'''''Color Pages''''', '''Water Color'''
*(Or replace line with Natural Water Color)

'''''Color Pages''''', '''Foliage Color'''
*(Or replace line with Natural Foliage Color)

'''''Color Pages''''', '''Grass Color'''
*(Or replace line with Natural Grass Color)

(Optional: Boundless Sky and/or Rainbow Pages)

=== World Features and Structures ===

'''Large Feature, Medium Feature, Small Feature,'''
*(Or replace with Lacking X Feature, however Lacking Small/Meduim Features will result in some instability)
**(Features will sometimes accept ''Block Pages'' to generate the material, '''Floating Islands''' also accepts a ''Biome Page'')

=== Effects ===

(Optional: Effects Pages)

'''Clear Modifiers Page''' 
'''Clear Modifiers''' is optional but reduces the chances of the age being violently unstable due to unused modifiers. It generates a small amount of instability for every “dangling” or “unused” ''Modifier'' page it accepts. This can be used as a “safety net” at the end of complex passages to clear all modifiers if you are unsure of your grammar.

In practice, unused modifiers are assigned usages by the grammar, so there are rarely unused modifiers by the time this symbol is applied.

=== Gradients ===

"Gradient" is an optional page that can be used to change Sunset, Stars, Sky, Night Sky, Fog, and Cloud color, and have them shift between colors over a certain length of time.

Example format with three alternating colors in the sky:

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 1)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 2)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 3)

'''Sky Color Page'''

Length determines how long a color will last before it's completely faded to the next color, and color page mixing are standard Mystcraft rules. You must have at least two colors to alternate between but you may add as many as needed.
*Length seems to be half as long as Celestial lengths for gradients, if you wanted to sync a color shift to a celestial, you can include the same Length pages for both.
**(Example: ''''Red Color''''', '''''Full Length''''', '''Gradient Page''' would sync to a Celestial also using only "Full Length" for it's movement.)

=== Additional Notes ===

* '''"Replace line"''' in the above example means '''"Remove that page and all its modifier pages, the replacement page accepts 0 modifiers"'''

* Additional Celestials, Features and Effects can be added, as long as they remain in the correct format.

* Native Biome Distribution, Natural X Color pages, and Dark Celestials accept no modifiers.

* Any optional sections you decide to leave out may be randomized for you, the Grammar will not be satisfied for those sections, the more specific you are the less is left to chance.
** For an age to be “stable” it must use no pages that generate base instability, and must not have excessive ores in the ground (compared to the overworld).
*** It is common to have “pseudo-stable” ages with some instability, but not enough for world-destroying effects. This can happen just by adding glowstone (for example) to an overworld-like age, as glowstone is not a normal resource in the overworld.
*** An age an be made "more stable" by adding pages that reduce instability. For example, an age with "Charged" will have lighting strikes, but will have less instability.

* Effects will not be added randomly unless the age is unstable due to either greedy pages like "Accelerated", or grammar errors, or excessive ores/fluids in the ground.
** There are pages that will add instability, anything that adds ores or other rare resources, or give some form of advantage to the player will generally cause instability.
*** Pages like Dense Ores, Diamond Ore Block, etc. *may* create a lot of instability.
: As a quick counter example, "void world, dense ores, diamond ore block, obelisks" will not. Since it is void, there is no stone to be turned into ores by dense ores; since there is no land, there are no obelisks. It is not that these pages generate instability, it is the effect in the world. {{format-help}}
*** Ages with Acceleration will cause instability, because it makes farms more efficient.
*** Ages with Bright Lighting will cause instability, because they are easier to mine in.

Remember, instability is not automatically decay. Early instability effects are almost always surface status effects. A cave world, with glowstone, and bright lighting, might not have any noticeable effect inside the cave itself.

== XComp's Notes ==
* "Some symbols function as modifiers for other modifiers" (ex. Red Color can mix with other colors, Half Length with other lengths, North Direction with other directions, etc).
* "Modifiers come before the symbol they modify"
* "Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded"
** "This is similar to if you provided the words "red" "dog" "ball" and the universe expanded it to "The red dog plays with the ball". The grammar expansion is random, and may take different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion."
* "Not fully satisfying the grammar won't produce instability directly. The symbols added by the grammar might, however."

== Version Compatibility ==
*The grammar system above is current for Mystcraft Versions 0.12 through Current [https://minecraft.curseforge.com/projects/mystcraft/files (Latest Builds)]

== Graphical Images ==
https://web.archive.org/web/20160603083617im_/http://binarymage.com/wiki/lib/exe/fetch.php?media=writing:summary:diapositiva1.jpg

https://web.archive.org/web/20160603131438im_/http://binarymage.com/wiki/lib/exe/fetch.php?media=writing:summary:diapositiva2.jpg

v0.13:Writing

2018-07-20T01:31:33Z

Keybounce: Old section was based on really old writing system, and treated "instability" as "decay". Needs formatting help.

{{av}}

== Grammar and Stable Writing ==

In order to better control the results of your writing, you will need to understand the Grammar. It’s best to plan out what kind of world you want in advance and make sure you satisfy as much of the grammar as possible.

Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded. This is similar to if you provided the words "red" "dog" "ball" and a sentence generator expanded it to "The red dog plays with the ball". The grammar expansion is random, and may form different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion. These expansions are done similar to [https://en.wikipedia.org/wiki/Parse_tree sentence tree structures].

The more detail provided initially, the less the universe will inject new variations to what has been written. Writing "The red dog plays with the ball" leaves far fewer options for expansion; usually the remaining expansions take the form of modifiers. "The big, red dog plays with the ball" or "The red dog plays with the ball in the yard" would be valid expansions of the English sentence.

Making mistakes, including conflicting or paradoxical passages, or attempting to write an Age with overabundant resources or advantages will result in an Age with [[Instability]]. Additionally, if the grammar is unsatisfied, symbols may be added to the age which may add instability.

''Modifier Pages'' come before the '''Modified Page''' in the symbol order; similar to ''Adjectives'' and '''Nouns''' in English.
*"This is a ''Red'' '''Ball'''." is correct, whereas "This is a '''Ball''' ''Red''." would be grammatically incorrect.

== Standard Age ==

A "Standard Age" layout and recommend page order example is given below. For ease of identifying which pages modify others, ''Modifier Pages will be in Italics'', '''Modified Pages shown in Bold''' and finally pages that both ''Modify'' and can be '''Modified''' will be in both '''''Bold and Italics''''':

=== Link Panel ===

Link Panel Page,
*(May have additional properties added via the [[Ink Mixer]])

=== Terrain and World Type ===

''Biome Pages'', '''Biome Distribution Page'''

''Block Page''
*(Generates Terrain, replaces Stone/Dirt),

''Block Page or No Seas Page''
*(Generates Seas, replaces Water),

'''World Type Page'''

=== Weather Type and Light Level ===

Weather Page,
*(or replace with "No Weather" Page)

Lighting Page

=== Celestials ===

(Optional: Color Pages, Sunset Color Page)
'''''Length Pages, Direction Pages, Phase Pages,''''' '''Normal Sun''',
*(If no Sun, replace entire with Dark Sun)

(Optional: '''''Color Pages''''', '''''Sunset Color Page''''')
Length Pages, Direction Pages, Phase Pages, Normal Moon,
*(If no Moon, replace line with Dark Moon)

(Optional: '''''Length''''' and '''''Direction Pages''''')
'''''Color Pages''''', '''Star Page'''
*(If no stars, replace line with Dark Stars)

=== Visuals ===

'''''Color Pages''''', '''Sky Color'''
*(Or replace line with Natural Sky Color)

'''''Color Pages''''', '''Night Sky Color'''
*(For Default Night Sky, use Black Color)

'''''Color Pages''''', '''Fog Color'''
*(Or replace line with Natural Fog Color)

'''''Color Pages''''', '''Cloud Color'''
*(Or replace line with Natural Cloud Color)

'''''Color Pages''''', '''Water Color'''
*(Or replace line with Natural Water Color)

'''''Color Pages''''', '''Foliage Color'''
*(Or replace line with Natural Foliage Color)

'''''Color Pages''''', '''Grass Color'''
*(Or replace line with Natural Grass Color)

(Optional: Boundless Sky and/or Rainbow Pages)

=== World Features and Structures ===

'''Large Feature, Medium Feature, Small Feature,'''
*(Or replace with Lacking X Feature, however Lacking Small/Meduim Features will result in some instability)
**(Features will sometimes accept ''Block Pages'' to generate the material, '''Floating Islands''' also accepts a ''Biome Page'')

=== Effects ===

(Optional: Effects Pages)

'''Clear Modifiers Page''' 
'''Clear Modifiers''' is optional but reduces the chances of the age being violently unstable due to unused modifiers. It generates a small amount of instability for every “dangling” or “unused” ''Modifier'' page it accepts. This can be used as a “safety net” at the end of complex passages to clear all modifiers if you are unsure of your grammar.

In practice, unused modifiers are assigned usages by the grammar, so there are rarely unused modifiers by the time this symbol is applied.

=== Gradients ===

"Gradient" is an optional page that can be used to change Sunset, Stars, Sky, Night Sky, Fog, and Cloud color, and have them shift between colors over a certain length of time.

Example format with three alternating colors in the sky:

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 1)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 2)

'''''Color Pages''''', '''''Length Pages''''', '''Gradient Page''' (Color 3)

'''Sky Color Page'''

Length determines how long a color will last before it's completely faded to the next color, and color page mixing are standard Mystcraft rules. You must have at least two colors to alternate between but you may add as many as needed.
*Length seems to be half as long as Celestial lengths for gradients, if you wanted to sync a color shift to a celestial, you can include the same Length pages for both.
**(Example: ''''Red Color''''', '''''Full Length''''', '''Gradient Page''' would sync to a Celestial also using only "Full Length" for it's movement.)

=== Additional Notes ===

* '''"Replace line"''' in the above example means '''"Remove that page and all its modifier pages, the replacement page accepts 0 modifiers"'''

* Additional Celestials, Features and Effects can be added, as long as they remain in the correct format.

* Native Biome Distribution, Natural X Color pages, and Dark Celestials accept no modifiers.

* Any optional sections you decide to leave out may be randomized for you, the Grammar will not be satisfied for those sections, the more specific you are the less is left to chance.
** For an age to be “stable” it must use no pages that generate base instability, and must not have excessive ores in the ground (compared to the overworld).
*** It is common to have “pseudo-stable” ages with some instability, but not enough for world-destroying effects. This can happen just by adding glowstone (for example) to an overworld-like age, as glowstone is not a normal resource in the overworld.
*** An age an be made "more stable" by adding pages that reduce instability. For example, an age with "Charged" will have lighting strikes, but will have less instability.

* Effects will not be added randomly unless the age is unstable due to either greedy pages like "Accelerated", or grammar errors, or excessive ores/fluids in the ground.
** There are pages that will add instability, anything that adds ores or other rare resources, or give some form of advantage to the player will generally cause instability.
*** Pages like Dense Ores, Diamond Ore Block, etc. *may* create a lot of instability.
: As a quick counter example, "void world, dense ores, diamond ore block, obelisks" will not. Since it is void, there is no stone to be turned into ores by dense ores; since there is no land, there are no obelisks. It is not that these pages generate instability, it is the effect in the world. {{format-help}}
*** Ages with Acceleration will cause instability, because it makes farms more efficient.
*** Ages with Bright Lighting will cause instability, because they are easier to mine in.

Remember, instability is not automatically decay. Early instability effects are almost always surface status effects. A cave world, with glowstone, and bright lighting, might not have any noticeable effect inside the cave itself.

== XComp's Notes ==
* "Some symbols function as modifiers for other modifiers" (ex. Red Color can mix with other colors, Half Length with other lengths, North Direction with other directions, etc).
* "Modifiers come before the symbol they modify"
* "Incomplete age descriptions will be parsed by the universe (following the grammar) and then further expanded"
** "This is similar to if you provided the words "red" "dog" "ball" and the universe expanded it to "The red dog plays with the ball". The grammar expansion is random, and may take different expansions: "The red car narrowly missed the dog chasing the green ball" is an equally valid expansion."
* "Not fully satisfying the grammar won't produce instability directly. The symbols added by the grammar might, however."

== Version Compatibility ==
*The grammar system above is current for Mystcraft Versions 0.12 through 0.13.4.04 [https://minecraft.curseforge.com/projects/mystcraft/files/2581192 (Latest Build)]

v0.13:Strange behaviors

2018-07-06T18:14:09Z

Keybounce: Created page with "This page exists to collect the strange behaviors seen in Mystcraft. Some of these may be bugs in the current version; others are intended oddballs to be aware of. In general..."

This page exists to collect the strange behaviors seen in Mystcraft. Some of these may be bugs in the current version; others are intended oddballs to be aware of.

In general: if it seems counterintuitive at first, it should be listed here.

=== Transparent blocks and outdoors ===
Any block that permits light to travel through (including torches, fenceposts, and glass) will permit instability affects to pass.

This is probably not intended. A switch to testing for "can lightning strike here?" or "do any of the blocks above me have a 'you cannot walk here' size of a full block?" would probably be an improvement.

=== Grammar expansion ===
The current version makes it very hard to generate instability just because you left stuff out of your writing. However, there is no way to predict ahead of time how the grammar will expand incomplete writing, and what is considered "incomplete" is often very surprising. This is known to be intentional.

v0.13 talk:Items

2018-07-06T17:49:04Z

Keybounce: Created page with "== intra-linking == The page mentions that books can take you within the same dimension. Where is the proper place to discuss intra-linking?"

== intra-linking ==

The page mentions that books can take you within the same dimension. Where is the proper place to discuss intra-linking?

v0.13:Items

2018-07-06T17:35:19Z

Keybounce: pass 2.

Mystcraft adds several [https://minecraft.gamepedia.com/Item Items], mostly related to [[Writing]] and [[Linking]] to [[Ages]].

== Books ==

[[#Linking_Book|Linking Books]] and [[#Descriptive_Book|Descriptive Books]] allow for transport across (and sometimes within) dimensions (( see talk page )). They will take damage if dropped on the ground, can be protected from this damage with a [[#Book_Stand|Book Stand]] or [[Lectern|Lectern]], and does not follow the user linking with it.

Linking and Descriptive Books can be opened by right-clicking while holding one in the Player's hand. The [[Ages|Age]] the book links to can be entered by clicking on the [[Linking#Linking_Panel|Linking Panel]] inside the book, however, the book will drop from the Player's inventory when they teleport. As a book lays on the ground, it will slowly accumulate damage that cannot be repaired. This can be avoided by placing the book inside a Book Stand. The Book Stand can be right-clicked with a book to place the book inside, and an occupied Book Stand can be right-clicked to open the book to click the Linking Panel.

=== Descriptive Books ===

=== Linking Book ===

It is created by holding an [[Unlinked Link Book]] in the hand and right-clicking with it. The link created permanently captures both the link location and the direction the user is facing when the link is created.

== Stands ==

Book Stands and lecterns are blocks used to hold [[#Linking_Book|Linking Books]] and [[#Descriptive_Book|Descriptive Books]] to display them and keep them from degrading.

=== Book Stand ===

[[File:Book_stand_recipe.png|thumb|Crafting Recipe for the Book Stand.]]

=== Lectern ===

v0.13:Instability

2018-07-06T17:26:10Z

Keybounce: /* Notes */

{{av}}

'''Instability''' refers to dangerous, destructive, or unpleasant features in an age. Instability can be caused by conflicts in an [[Writing|age's description]] or by an overabundance of rare resources—intentional or not.

In [http://dni.wikia.com/wiki/Myst_(Game) Myst lore], the [http://dni.wikia.com/wiki/Art Art] of writing ages was primarily focused on avoiding [http://dni.wikia.com/wiki/Art#Restrictions contradictions that would cause instability]. Mystcraft builds on that by also making it a balance mechanic.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Status Effects ==

Instability can manifest as [https://minecraft.gamepedia.com/Status_effect status effects] on players and other [https://minecraft.gamepedia.com/Mob mobs] when inside an Age. Depending on how unstable the Age is, some effects may only show up on the surface of the Age, or they may be present regardless of location.

Status effects may appear at any level of instability, Ages with only surface status effects can still be quite livable.

=== Possible Statuses ===

* [https://minecraft.gamepedia.com/Status_effect#Blindness Blindness]
* [https://minecraft.gamepedia.com/Status_effect#Hunger Hunger]
* [https://minecraft.gamepedia.com/Status_effect#Mining_Fatigue Mining Fatigue]
* [https://minecraft.gamepedia.com/Status_effect#Nausea Nausea]
* [https://minecraft.gamepedia.com/Status_effect#Poison Poison]
* [https://minecraft.gamepedia.com/Status_effect#Regeneration Regeneration]†
* [https://minecraft.gamepedia.com/Status_effect#Resistance Resistance]†
* [https://minecraft.gamepedia.com/Status_effect#Slowness Slowness]
* [https://minecraft.gamepedia.com/Status_effect#Weakness Weakness]
* [https://minecraft.gamepedia.com/Status_effect#Wither Wither]

† Applied to all mobs except players.

=== Notes ===

Surface effects will apply when standing on any block exposed to the sky. Transparent blocks such as [https://minecraft.gamepedia.com/Glass Glass] do not prevent exposure. However, blocks such as leaf blocks will.

Some blocks from other mods may be transparent despite appearing solid, meaning they will not prevent exposure to surface level effects.

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==

Left unchecked, these will ultimately result in the destruction of everything in the Age.

=== Meteors ===

[[File:Craters.jpg|thumb|Example of the craters left by meteors.]]
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

N.b.: these blocks can be picked up in creative mode. They can only be placed down in ages. Even if placed, they will not spread unless that age qualifies for them.

In particular, they can be used to decorate creative builds in most ages.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

Time to break with diamond pick: 1 second. 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond shovel: 1/2 second. 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Red decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

==== Spawning ====

Normal spawning for the red, blue, and purple decay blocks is between Y=25 and the highest worldgen block (includes any Mystcraft generation, such as tendrills or floating islands); for white, it is Y=20 and above. These blocks will spawn in air; a tendril or floating island in the sky will result in decay blocks in the atmosphere.

Black decay does not seem to spawn in worldgen. {{Verify}}

Decay blocks are not just worldgen; existing ground blocks will turn into decay with time. {{Verify}}

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

== Configuration ==

=== Disabling Effects ===

Instability configuration can be found in your [https://minecraft.gamepedia.com/.minecraft .minecraft] folder, inside <code>config/mystcraft/instabilities.cfg</code>.

Each instability effect can be disabled as desired by changing <code>true</code> to <code>false</code>.

Lines containing a [[#Status Effect|Status Effect]] followed by <code>,g</code> (such as <code>B:"hunger,g.enabled"=true</code>) refer to the global version of that effect. All other lines containing a status effect refer to the surface-level version of that effect.

=== Disabling All Instability ===

A shortcut to disable all instability is to set the <code>global.enabled</code> flag to false in the <code>instability</code> section of <code>config/mystcraft/balance.cfg</code>.

=== Profiling ===

When starting a new world with Mystcraft installed, a profiling process will begin in the background. This process is used to determine the rarity of the various blocks and liquids in the game. If an Age contains a significant amount of rare materials, instability will be added to compensate for balance.

If profiling degrades performance significantly and waiting for it to complete is not an option, it can be disabled in the configuration. See the comments in the <code>baselining</code> section of <code>config/mystcraft/core.cfg</code> for more details.

Advanced users can provide their own values for each block instead of profiling, by filling out <code>config/mystcraft/balance.cfg</code> and fully disabling profiling.

== Admin Commands ==
It is possible to try to determine why an age is unstable using the Mystcraft debug command (<code>/myst-dbg</code>). This command will automatically complete entries when you press tab, and will cycle to the next possible option on another tab press.

In order to read the current instability score values in an age, the <code>read</code> instruction should be used. Here we want to read from <code>ages</code>, followed by specifying the target age (currently loaded ages are available). The instability values are under <code>instability</code>, and split into multiple sections. The <code>total</code> gives the absolute instability score of the age.

==== Example Commands ====
<code>/myst-dbg read ages agedata_2 instability total

/myst-dbg read ages agedata_2 instability blocks_total

/myst-dbg read ages agedata_2 instability bonus_total

</code>

v0.13:Instability

2018-07-06T17:24:08Z

Keybounce: /* Decay Blocks */

{{av}}

'''Instability''' refers to dangerous, destructive, or unpleasant features in an age. Instability can be caused by conflicts in an [[Writing|age's description]] or by an overabundance of rare resources—intentional or not.

In [http://dni.wikia.com/wiki/Myst_(Game) Myst lore], the [http://dni.wikia.com/wiki/Art Art] of writing ages was primarily focused on avoiding [http://dni.wikia.com/wiki/Art#Restrictions contradictions that would cause instability]. Mystcraft builds on that by also making it a balance mechanic.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Status Effects ==

Instability can manifest as [https://minecraft.gamepedia.com/Status_effect status effects] on players and other [https://minecraft.gamepedia.com/Mob mobs] when inside an Age. Depending on how unstable the Age is, some effects may only show up on the surface of the Age, or they may be present regardless of location.

Status effects may appear at any level of instability, Ages with only surface status effects can still be quite livable.

=== Possible Statuses ===

* [https://minecraft.gamepedia.com/Status_effect#Blindness Blindness]
* [https://minecraft.gamepedia.com/Status_effect#Hunger Hunger]
* [https://minecraft.gamepedia.com/Status_effect#Mining_Fatigue Mining Fatigue]
* [https://minecraft.gamepedia.com/Status_effect#Nausea Nausea]
* [https://minecraft.gamepedia.com/Status_effect#Poison Poison]
* [https://minecraft.gamepedia.com/Status_effect#Regeneration Regeneration]†
* [https://minecraft.gamepedia.com/Status_effect#Resistance Resistance]†
* [https://minecraft.gamepedia.com/Status_effect#Slowness Slowness]
* [https://minecraft.gamepedia.com/Status_effect#Weakness Weakness]
* [https://minecraft.gamepedia.com/Status_effect#Wither Wither]

† Applied to all mobs except players.

=== Notes ===

Surface effects will apply when standing on any block exposed to the sky. Transparent blocks such as [https://minecraft.gamepedia.com/Glass Glass] do not prevent exposure. {{verify}}

Some blocks from other mods may be transparent despite appearing solid, meaning they will not prevent exposure to surface level effects.

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==

Left unchecked, these will ultimately result in the destruction of everything in the Age.

=== Meteors ===

[[File:Craters.jpg|thumb|Example of the craters left by meteors.]]
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

N.b.: these blocks can be picked up in creative mode. They can only be placed down in ages. Even if placed, they will not spread unless that age qualifies for them.

In particular, they can be used to decorate creative builds in most ages.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

Time to break with diamond pick: 1 second. 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond shovel: 1/2 second. 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Red decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

==== Spawning ====

Normal spawning for the red, blue, and purple decay blocks is between Y=25 and the highest worldgen block (includes any Mystcraft generation, such as tendrills or floating islands); for white, it is Y=20 and above. These blocks will spawn in air; a tendril or floating island in the sky will result in decay blocks in the atmosphere.

Black decay does not seem to spawn in worldgen. {{Verify}}

Decay blocks are not just worldgen; existing ground blocks will turn into decay with time. {{Verify}}

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

== Configuration ==

=== Disabling Effects ===

Instability configuration can be found in your [https://minecraft.gamepedia.com/.minecraft .minecraft] folder, inside <code>config/mystcraft/instabilities.cfg</code>.

Each instability effect can be disabled as desired by changing <code>true</code> to <code>false</code>.

Lines containing a [[#Status Effect|Status Effect]] followed by <code>,g</code> (such as <code>B:"hunger,g.enabled"=true</code>) refer to the global version of that effect. All other lines containing a status effect refer to the surface-level version of that effect.

=== Disabling All Instability ===

A shortcut to disable all instability is to set the <code>global.enabled</code> flag to false in the <code>instability</code> section of <code>config/mystcraft/balance.cfg</code>.

=== Profiling ===

When starting a new world with Mystcraft installed, a profiling process will begin in the background. This process is used to determine the rarity of the various blocks and liquids in the game. If an Age contains a significant amount of rare materials, instability will be added to compensate for balance.

If profiling degrades performance significantly and waiting for it to complete is not an option, it can be disabled in the configuration. See the comments in the <code>baselining</code> section of <code>config/mystcraft/core.cfg</code> for more details.

Advanced users can provide their own values for each block instead of profiling, by filling out <code>config/mystcraft/balance.cfg</code> and fully disabling profiling.

== Admin Commands ==
It is possible to try to determine why an age is unstable using the Mystcraft debug command (<code>/myst-dbg</code>). This command will automatically complete entries when you press tab, and will cycle to the next possible option on another tab press.

In order to read the current instability score values in an age, the <code>read</code> instruction should be used. Here we want to read from <code>ages</code>, followed by specifying the target age (currently loaded ages are available). The instability values are under <code>instability</code>, and split into multiple sections. The <code>total</code> gives the absolute instability score of the age.

==== Example Commands ====
<code>/myst-dbg read ages agedata_2 instability total

/myst-dbg read ages agedata_2 instability blocks_total

/myst-dbg read ages agedata_2 instability bonus_total

</code>

v0.13:Items

2018-07-06T17:20:10Z

Keybounce: minor restructuring.

Mystcraft adds several [https://minecraft.gamepedia.com/Item Items], mostly related to [[Writing]] and [[Linking]] to [[Ages]].

== Books ==

Linking and Descriptive Books can be opened by right-clicking while holding one in the Player's hand. The [[Ages|Age]] the book links to can be entered by clicking on the [[Linking#Linking_Panel|Linking Panel]] inside the book, however, the book will drop from the Player's inventory when they teleport. As a book lays on the ground, it will slowly accumulate damage that cannot be repaired. This can be avoided by placing the book inside a Book Stand. The Book Stand can be right-clicked with a book to place the book inside, and an occupied Book Stand can be right-clicked to open the book to click the Linking Panel.

=== Descriptive Books ===

=== Linking Book ===

A Linking Book allows for transport across (and sometimes within) dimensions. (( *** )) Like a [[#Descriptive_Book|Descriptive Book]], it takes damage if dropped on the ground, can be protected from this damage with a [[#Book_Stand|Book Stand]] or [[Lectern|Lectern]], and does not follow the user linking with it.

It is created by holding an [[Unlinked Link Book]] in the hand and right-clicking with it. The link created permanently captures both the link location and the direction the user is facing when the link is created.

== Stands ==

=== Book Stand ===

[[File:Book_stand_recipe.png|thumb|Crafting Recipe for the Book Stand.]]
The Book Stand is a block used to hold [[#Linking_Book|Linking Books]] and [[#Descriptive_Book|Descriptive Books]] to display them and keep them from degrading.

=== Lectern ===

v0.13:Instability

2018-07-04T16:29:26Z

Keybounce: Fixed invention

{{av}}

'''Instability''' refers to dangerous, destructive, or unpleasant features in an age. Instability can be caused by conflicts in an [[Writing|age's description]] or by an overabundance of rare resources—intentional or not.

In [http://dni.wikia.com/wiki/Myst_(Game) Myst lore], the [http://dni.wikia.com/wiki/Art Art] of writing ages was primarily focused on avoiding [http://dni.wikia.com/wiki/Art#Restrictions contradictions that would cause instability]. Mystcraft builds on that by also making it a balance mechanic.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Status Effects ==

Instability can manifest as [https://minecraft.gamepedia.com/Status_effect status effects] on players and other [https://minecraft.gamepedia.com/Mob mobs] when inside an Age. Depending on how unstable the Age is, some effects may only show up on the surface of the Age, or they may be present regardless of location.

Status effects may appear at any level of instability, Ages with only surface status effects can still be quite livable.

=== Possible Statuses ===

* [https://minecraft.gamepedia.com/Status_effect#Blindness Blindness]
* [https://minecraft.gamepedia.com/Status_effect#Hunger Hunger]
* [https://minecraft.gamepedia.com/Status_effect#Mining_Fatigue Mining Fatigue]
* [https://minecraft.gamepedia.com/Status_effect#Nausea Nausea]
* [https://minecraft.gamepedia.com/Status_effect#Poison Poison]
* [https://minecraft.gamepedia.com/Status_effect#Regeneration Regeneration]†
* [https://minecraft.gamepedia.com/Status_effect#Resistance Resistance]†
* [https://minecraft.gamepedia.com/Status_effect#Slowness Slowness]
* [https://minecraft.gamepedia.com/Status_effect#Weakness Weakness]
* [https://minecraft.gamepedia.com/Status_effect#Wither Wither]

† Applied to all mobs except players.

=== Notes ===

Surface effects will apply when standing on any block exposed to the sky. Transparent blocks such as [https://minecraft.gamepedia.com/Glass Glass] do not prevent exposure. {{verify}}

Some blocks from other mods may be transparent despite appearing solid, meaning they will not prevent exposure to surface level effects.

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==

Left unchecked, these will ultimately result in the destruction of everything in the Age.

=== Meteors ===

[[File:Craters.jpg|thumb|Example of the craters left by meteors.]]
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

Time to break with diamond pick: 1 second. 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond shovel: 1/2 second. 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Red decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

==== Spawning ====

Normal spawning for the red, blue, and purple decay blocks is between Y=25 and the highest worldgen block (includes any Mystcraft generation, such as tendrills or floating islands); for white, it is Y=20 and above. These blocks will spawn in air; a tendril or floating island in the sky will result in decay blocks in the atmosphere.

Black decay does not seem to spawn in worldgen. {{Verify}}

Decay blocks are not just worldgen; existing ground blocks will turn into decay with time. {{Verify}}

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

== Configuration ==

=== Disabling Effects ===

Instability configuration can be found in your [https://minecraft.gamepedia.com/.minecraft .minecraft] folder, inside <code>config/mystcraft/instabilities.cfg</code>.

Each instability effect can be disabled as desired by changing <code>true</code> to <code>false</code>.

Lines containing a [[#Status Effect|Status Effect]] followed by <code>,g</code> (such as <code>B:"hunger,g.enabled"=true</code>) refer to the global version of that effect. All other lines containing a status effect refer to the surface-level version of that effect.

=== Disabling All Instability ===

A shortcut to disable all instability is to set the <code>global.enabled</code> flag to false in the <code>instability</code> section of <code>config/mystcraft/balance.cfg</code>.

=== Profiling ===

When starting a new world with Mystcraft installed, a profiling process will begin in the background. This process is used to determine the rarity of the various blocks and liquids in the game. If an Age contains a significant amount of rare materials, instability will be added to compensate for balance.

If profiling degrades performance significantly and waiting for it to complete is not an option, it can be disabled in the configuration. See the comments in the <code>baselining</code> section of <code>config/mystcraft/core.cfg</code> for more details.

Advanced users can provide their own values for each block instead of profiling, by filling out <code>config/mystcraft/balance.cfg</code> and fully disabling profiling.

== Admin Commands ==
It is possible to try to determine why an age is unstable using the Mystcraft debug command (<code>/myst-dbg</code>). This command will automatically complete entries when you press tab, and will cycle to the next possible option on another tab press.

In order to read the current instability score values in an age, the <code>read</code> instruction should be used. Here we want to read from <code>ages</code>, followed by specifying the target age (currently loaded ages are available). The instability values are under <code>instability</code>, and split into multiple sections. The <code>total</code> gives the absolute instability score of the age.

==== Example Commands ====
<code>/myst-dbg read ages agedata_2 instability total

/myst-dbg read ages agedata_2 instability blocks_total

/myst-dbg read ages agedata_2 instability bonus_total

</code>

v0.13:Instability

2018-07-04T16:27:09Z

Keybounce: Adjust timings, add spawn information

{{av}}

'''Instability''' refers to dangerous, destructive, or unpleasant features in an age. Instability can be caused by conflicts in an [[Writing|age's description]] or by an overabundance of rare resources—intentional or not.

In [http://dni.wikia.com/wiki/Myst_(Game) Myst lore], the [http://dni.wikia.com/wiki/Art Art] of writing ages was primarily focused on avoiding [http://dni.wikia.com/wiki/Art#Restrictions contradictions that would cause instability]. Mystcraft builds on that by also making it a balance mechanic.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Status Effects ==

Instability can manifest as [https://minecraft.gamepedia.com/Status_effect status effects] on players and other [https://minecraft.gamepedia.com/Mob mobs] when inside an Age. Depending on how unstable the Age is, some effects may only show up on the surface of the Age, or they may be present regardless of location.

Status effects may appear at any level of instability, Ages with only surface status effects can still be quite livable.

=== Possible Statuses ===

* [https://minecraft.gamepedia.com/Status_effect#Blindness Blindness]
* [https://minecraft.gamepedia.com/Status_effect#Hunger Hunger]
* [https://minecraft.gamepedia.com/Status_effect#Mining_Fatigue Mining Fatigue]
* [https://minecraft.gamepedia.com/Status_effect#Nausea Nausea]
* [https://minecraft.gamepedia.com/Status_effect#Poison Poison]
* [https://minecraft.gamepedia.com/Status_effect#Regeneration Regeneration]†
* [https://minecraft.gamepedia.com/Status_effect#Resistance Resistance]†
* [https://minecraft.gamepedia.com/Status_effect#Slowness Slowness]
* [https://minecraft.gamepedia.com/Status_effect#Weakness Weakness]
* [https://minecraft.gamepedia.com/Status_effect#Wither Wither]

† Applied to all mobs except players.

=== Notes ===

Surface effects will apply when standing on any block exposed to the sky. Transparent blocks such as [https://minecraft.gamepedia.com/Glass Glass] do not prevent exposure. {{verify}}

Some blocks from other mods may be transparent despite appearing solid, meaning they will not prevent exposure to surface level effects.

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==

Left unchecked, these will ultimately result in the destruction of everything in the Age.

=== Meteors ===

[[File:Craters.jpg|thumb|Example of the craters left by meteors.]]
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

Time to break with diamond pick: 1 second. 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond shovel: 1/2 second. 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Red decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: 9.5 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Spawning ===

Normal spawning for the red, blue, and purple decay blocks is between Y=25 and the highest worldgen block (includes any Mystcraft generation, such as tendrills or floating islands); for white, it is Y=20 and above. These blocks will spawn in air; a tendril or floating island in the sky will result in decay blocks in the atmosphere.

Black decay does not seem to spawn in worldgen. {{Verify}}

Decay blocks are not just worldgen; existing ground blocks will turn into decay with time. {{Verify}}

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

== Configuration ==

=== Disabling Effects ===

Instability configuration can be found in your [https://minecraft.gamepedia.com/.minecraft .minecraft] folder, inside <code>config/mystcraft/instabilities.cfg</code>.

Each instability effect can be disabled as desired by changing <code>true</code> to <code>false</code>.

Lines containing a [[#Status Effect|Status Effect]] followed by <code>,g</code> (such as <code>B:"hunger,g.enabled"=true</code>) refer to the global version of that effect. All other lines containing a status effect refer to the surface-level version of that effect.

=== Disabling All Instability ===

A shortcut to disable all instability is to set the <code>global.enabled</code> flag to false in the <code>instability</code> section of <code>config/mystcraft/balance.cfg</code>.

=== Profiling ===

When starting a new world with Mystcraft installed, a profiling process will begin in the background. This process is used to determine the rarity of the various blocks and liquids in the game. If an Age contains a significant amount of rare materials, instability will be added to compensate for balance.

If profiling degrades performance significantly and waiting for it to complete is not an option, it can be disabled in the configuration. See the comments in the <code>baselining</code> section of <code>config/mystcraft/core.cfg</code> for more details.

Advanced users can provide their own values for each block instead of profiling, by filling out <code>config/mystcraft/balance.cfg</code> and fully disabling profiling.

== Admin Commands ==
It is possible to try to determine why an age is unstable using the Mystcraft debug command (<code>/myst-dbg</code>). This command will automatically complete entries when you press tab, and will cycle to the next possible option on another tab press.

In order to read the current instability score values in an age, the <code>read</code> instruction should be used. Here we want to read from <code>ages</code>, followed by specifying the target age (currently loaded ages are available). The instability values are under <code>instability</code>, and split into multiple sections. The <code>total</code> gives the absolute instability score of the age.

==== Example Commands ====
<code>/myst-dbg read ages agedata_2 instability total

/myst-dbg read ages agedata_2 instability blocks_total

/myst-dbg read ages agedata_2 instability bonus_total

</code>

v0.13:Instability

2018-06-30T05:34:40Z

Keybounce: shovels, and ypo

{{av}}

'''Instability''' refers to dangerous, destructive, or unpleasant features in an age. Instability can be caused by conflicts in an [[Writing|age's description]] or by an overabundance of rare resources—intentional or not.

In [http://dni.wikia.com/wiki/Myst_(Game) Myst lore], the [http://dni.wikia.com/wiki/Art Art] of writing ages was primarily focused on avoiding [http://dni.wikia.com/wiki/Art#Restrictions contradictions that would cause instability]. Mystcraft builds on that by also making it a balance mechanic.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Status Effects ==

Instability can manifest as [https://minecraft.gamepedia.com/Status_effect status effects] on players and other [https://minecraft.gamepedia.com/Mob mobs] when inside an Age. Depending on how unstable the Age is, some effects may only show up on the surface of the Age, or they may be present regardless of location.

Status effects may appear at any level of instability, Ages with only surface status effects can still be quite livable.

=== Possible Statuses ===

* [https://minecraft.gamepedia.com/Status_effect#Blindness Blindness]
* [https://minecraft.gamepedia.com/Status_effect#Hunger Hunger]
* [https://minecraft.gamepedia.com/Status_effect#Mining_Fatigue Mining Fatigue]
* [https://minecraft.gamepedia.com/Status_effect#Nausea Nausea]
* [https://minecraft.gamepedia.com/Status_effect#Poison Poison]
* [https://minecraft.gamepedia.com/Status_effect#Regeneration Regeneration]†
* [https://minecraft.gamepedia.com/Status_effect#Resistance Resistance]†
* [https://minecraft.gamepedia.com/Status_effect#Slowness Slowness]
* [https://minecraft.gamepedia.com/Status_effect#Weakness Weakness]
* [https://minecraft.gamepedia.com/Status_effect#Wither Wither]

† Applied to all mobs except players.

=== Notes ===

Surface effects will apply when standing on any block exposed to the sky. Transparent blocks such as [https://minecraft.gamepedia.com/Glass Glass] do not prevent exposure. {{verify}}

Some blocks from other mods may be transparent despite appearing solid, meaning they will not prevent exposure to surface level effects.

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==

Left unchecked, these will ultimately result in the destruction of everything in the Age.

=== Meteors ===

[[File:Craters.jpg|thumb|Example of the craters left by meteors.]]
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond shovel: aprox. 3 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Red decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: aprox. 10 seconds.{{Verify}} 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It breaks around as fast as obsidian {{verify}}. If you are in the air, it's even worse than the feared White Decay.{{verify}}
It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

== Configuration ==

=== Disabling Effects ===

Instability configuration can be found in your [https://minecraft.gamepedia.com/.minecraft .minecraft] folder, inside <code>config/mystcraft/instabilities.cfg</code>.

Each instability effect can be disabled as desired by changing <code>true</code> to <code>false</code>.

Lines containing a [[#Status Effect|Status Effect]] followed by <code>,g</code> (such as <code>B:"hunger,g.enabled"=true</code>) refer to the global version of that effect. All other lines containing a status effect refer to the surface-level version of that effect.

=== Disabling All Instability ===

A shortcut to disable all instability is to set the <code>global.enabled</code> flag to false in the <code>instability</code> section of <code>config/mystcraft/balance.cfg</code>.

=== Profiling ===

When starting a new world with Mystcraft installed, a profiling process will begin in the background. This process is used to determine the rarity of the various blocks and liquids in the game. If an Age contains a significant amount of rare materials, instability will be added to compensate for balance.

If profiling degrades performance significantly and waiting for it to complete is not an option, it can be disabled in the configuration. See the comments in the <code>baselining</code> section of <code>config/mystcraft/core.cfg</code> for more details.

Advanced users can provide their own values for each block instead of profiling, by filling out <code>config/mystcraft/balance.cfg</code> and fully disabling profiling.

== Admin Commands ==
It is possible to try to determine why an age is unstable using the Mystcraft debug command (<code>/myst-dbg</code>). This command will automatically complete entries when you press tab, and will cycle to the next possible option on another tab press.

In order to read the current instability score values in an age, the <code>read</code> instruction should be used. Here we want to read from <code>ages</code>, followed by specifying the target age (currently loaded ages are available). The instability values are under <code>instability</code>, and split into multiple sections. The <code>total</code> gives the absolute instability score of the age.

==== Example Commands ====
<code>/myst-dbg read ages agedata_2 instability total

/myst-dbg read ages agedata_2 instability blocks_total

/myst-dbg read ages agedata_2 instability bonus_total

</code>

v0.13:Instability

2018-06-30T05:33:46Z

Keybounce: /* Red Decay */

{{av}}

'''Instability''' refers to dangerous, destructive, or unpleasant features in an age. Instability can be caused by conflicts in an [[Writing|age's description]] or by an overabundance of rare resources—intentional or not.

In [http://dni.wikia.com/wiki/Myst_(Game) Myst lore], the [http://dni.wikia.com/wiki/Art Art] of writing ages was primarily focused on avoiding [http://dni.wikia.com/wiki/Art#Restrictions contradictions that would cause instability]. Mystcraft builds on that by also making it a balance mechanic.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Status Effects ==

Instability can manifest as [https://minecraft.gamepedia.com/Status_effect status effects] on players and other [https://minecraft.gamepedia.com/Mob mobs] when inside an Age. Depending on how unstable the Age is, some effects may only show up on the surface of the Age, or they may be present regardless of location.

Status effects may appear at any level of instability, Ages with only surface status effects can still be quite livable.

=== Possible Statuses ===

* [https://minecraft.gamepedia.com/Status_effect#Blindness Blindness]
* [https://minecraft.gamepedia.com/Status_effect#Hunger Hunger]
* [https://minecraft.gamepedia.com/Status_effect#Mining_Fatigue Mining Fatigue]
* [https://minecraft.gamepedia.com/Status_effect#Nausea Nausea]
* [https://minecraft.gamepedia.com/Status_effect#Poison Poison]
* [https://minecraft.gamepedia.com/Status_effect#Regeneration Regeneration]†
* [https://minecraft.gamepedia.com/Status_effect#Resistance Resistance]†
* [https://minecraft.gamepedia.com/Status_effect#Slowness Slowness]
* [https://minecraft.gamepedia.com/Status_effect#Weakness Weakness]
* [https://minecraft.gamepedia.com/Status_effect#Wither Wither]

† Applied to all mobs except players.

=== Notes ===

Surface effects will apply when standing on any block exposed to the sky. Transparent blocks such as [https://minecraft.gamepedia.com/Glass Glass] do not prevent exposure. {{verify}}

Some blocks from other mods may be transparent despite appearing solid, meaning they will not prevent exposure to surface level effects.

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==

Left unchecked, these will ultimately result in the destruction of everything in the Age.

=== Meteors ===

[[File:Craters.jpg|thumb|Example of the craters left by meteors.]]
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond shovel: aprox. 3 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Blue decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: aprox. 10 seconds.{{Verify}} 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It breaks around as fast as obsidian {{verify}}. If you are in the air, it's even worse than the feared White Decay.{{verify}}
It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

== Configuration ==

=== Disabling Effects ===

Instability configuration can be found in your [https://minecraft.gamepedia.com/.minecraft .minecraft] folder, inside <code>config/mystcraft/instabilities.cfg</code>.

Each instability effect can be disabled as desired by changing <code>true</code> to <code>false</code>.

Lines containing a [[#Status Effect|Status Effect]] followed by <code>,g</code> (such as <code>B:"hunger,g.enabled"=true</code>) refer to the global version of that effect. All other lines containing a status effect refer to the surface-level version of that effect.

=== Disabling All Instability ===

A shortcut to disable all instability is to set the <code>global.enabled</code> flag to false in the <code>instability</code> section of <code>config/mystcraft/balance.cfg</code>.

=== Profiling ===

When starting a new world with Mystcraft installed, a profiling process will begin in the background. This process is used to determine the rarity of the various blocks and liquids in the game. If an Age contains a significant amount of rare materials, instability will be added to compensate for balance.

If profiling degrades performance significantly and waiting for it to complete is not an option, it can be disabled in the configuration. See the comments in the <code>baselining</code> section of <code>config/mystcraft/core.cfg</code> for more details.

Advanced users can provide their own values for each block instead of profiling, by filling out <code>config/mystcraft/balance.cfg</code> and fully disabling profiling.

== Admin Commands ==
It is possible to try to determine why an age is unstable using the Mystcraft debug command (<code>/myst-dbg</code>). This command will automatically complete entries when you press tab, and will cycle to the next possible option on another tab press.

In order to read the current instability score values in an age, the <code>read</code> instruction should be used. Here we want to read from <code>ages</code>, followed by specifying the target age (currently loaded ages are available). The instability values are under <code>instability</code>, and split into multiple sections. The <code>total</code> gives the absolute instability score of the age.

==== Example Commands ====
<code>/myst-dbg read ages agedata_2 instability total

/myst-dbg read ages agedata_2 instability blocks_total

/myst-dbg read ages agedata_2 instability bonus_total

</code>

v0.13:Instability

2018-06-20T16:18:25Z

Keybounce: /* Possible Statuses */

{{av}}
[[File:White decay.png|thumb|Example of some white decay.]]

'''Instability''' refers to dangerous, destructive, or unpleasant features in an age. Instability can be caused by conflicts in an [[Writing|age's description]] or by an overabundance of rare resources—intentional or not.

In [http://dni.wikia.com/wiki/Myst_(Game) Myst lore], the [http://dni.wikia.com/wiki/Art Art] of writing ages was primarily focused on avoiding [http://dni.wikia.com/wiki/Art#Restrictions contradictions that would cause instability]. Mystcraft builds on that by also making it a balance mechanic.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Status Effects ==

Instability can manifest as [https://minecraft.gamepedia.com/Status_effect status effects] on players and other [https://minecraft.gamepedia.com/Mob mobs] when inside an Age. Depending on how unstable the Age is, some effects may only show up on the surface of the Age, or they may be present regardless of location.

Status effects may appear at any level of instability, Ages with only surface status effects can still be quite livable.

=== Possible Statuses ===

* [https://minecraft.gamepedia.com/Status_effect#Mining_Fatigue Mining Fatigue]
* [https://minecraft.gamepedia.com/Status_effect#Slowness Slowness]
* [https://minecraft.gamepedia.com/Status_effect#Poison Poison]
* [https://minecraft.gamepedia.com/Status_effect#Nausea Nausea]
* [https://minecraft.gamepedia.com/Status_effect#Hunger Hunger]
* [https://minecraft.gamepedia.com/Status_effect#Blindness Blindness]
* [https://minecraft.gamepedia.com/Status_effect#Weakness Weakness]
* [https://minecraft.gamepedia.com/Status_effect#Regeneration Regeneration]†
* [https://minecraft.gamepedia.com/Status_effect#Resistance Resistance]†

† Only applied to hostile mobs. {{Verify}} -- in earlier versions, all mobs (including cows, etc.) would be affected.

=== Notes ===

Surface effects will apply when standing on any block exposed to the sky. Transparent blocks such as [https://minecraft.gamepedia.com/Glass Glass] do not prevent exposure. {{verify}}

Some blocks from other mods may be transparent despite appearing solid; meaning they will not prevent exposure to surface level effects.

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==
Any of these will, unless countered by some sort of mod power, will ultimately result in the destruction of everything in the age, and potentially even leaving a void age in the case of meteors and black decay.

=== Meteors ===
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

[[File:Colored Decay.png|thumb|Example of some colored decay.]]
Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond pick: aprox. 3 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Blue decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: aprox. 10 seconds.{{Verify}} 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It breaks around as fast as obsidian {{verify}}. If you are in the air, it's even worse than the feared White Decay.{{verify}}
It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

== Configuration ==

=== Disabling Effects ===

Instability configuration can be found in your [https://minecraft.gamepedia.com/.minecraft .minecraft] folder, inside <code>config/mystcraft/instabilities.cfg</code>.

Each instability effect can be disabled as desired by changing <code>true</code> to <code>false</code>.

Lines containing a [[#Status Effect|Status Effect]] followed by <code>,g</code> (such as <code>B:"hunger,g.enabled"=true</code>) refer to the global version of that effect. All other lines containing a status effect refer to the surface-level version of that effect.

=== Disabling All Instability ===

A shortcut to disable all instability is to set the <code>global.enabled</code> flag to false in the <code>instability</code> section of <code>config/mystcraft/balance.cfg</code>.

=== Profiling ===

When starting a new world with Mystcraft installed, a profiling process will begin in the background. This process is used to determine the rarity of the various blocks and liquids in the game. If an Age contains a significant amount of rare materials, instability will be added to compensate for balance.

If profiling degrades performance significantly and waiting for it to complete is not an option, it can be disabled in the configuration. See the comments in the <code>baselining</code> section of <code>config/mystcraft/core.cfg</code> for more details.

Advanced users can provide their own values for each block instead of profiling, by filling out <code>config/mystcraft/balance.cfg</code> and fully disabling profiling.

v0.13:Instability

2018-06-20T01:09:02Z

Keybounce: /* Erosion */

{{av}}
[[File:White decay.png|thumb|Example of some white decay.]]

'''Instability''' is a balance mechanic in Mystcraft which is a result of poor or greedy writing.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Buffs and Debuffs ==

Negative potion effects sometimes occur in a Mystcraft Age. These can either be ambient, where they are unchanging, or due to sky exposure, where they can be counteracted by simply going underground (Note: To count as being underground, there simply needs to be at least 1 solid block separating you and the sky). Known potion effects caused by instability include:

* Mining Fatigue
* Slowness
* Poison
* Nausea
* Hunger
* Blindness
* Weakness

-note that glass block doesnt count as a block that separating you from the sky {{verify}}

There are also at least 2 things that give benefits to non-player mobs in the world.

* Regeneration
* Resistance

Because these are the first level of instability, it is possible for an age to show no outward sign of anything being unusual yet still have effects making mobs harder to kill.

=== Bugs ===
Some modded blocks seem to not count as "solid" blocks, even though they are, and do not block Sky Exposure effects

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==
Any of these will, unless countered by some sort of mod power, will ultimately result in the destruction of everything in the age, and potentially even leaving a void age in the case of meteors and black decay.

=== Meteors ===
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

[[File:Colored Decay.png|thumb|Example of some colored decay.]]
Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond pick: aprox. 3 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Blue decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: aprox. 10 seconds.{{Verify}} 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It breaks around as fast as obsidian {{verify}}. If you are in the air, it's even worse than the feared White Decay.{{verify}}
It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Crumble ===

An erosion effect; will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Logs into planks. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

v0.13:Instability

2018-06-20T01:07:21Z

Keybounce: Burning Effect -> Scorched Surface

{{av}}
[[File:White decay.png|thumb|Example of some white decay.]]

'''Instability''' is a balance mechanic in Mystcraft which is a result of poor or greedy writing.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Buffs and Debuffs ==

Negative potion effects sometimes occur in a Mystcraft Age. These can either be ambient, where they are unchanging, or due to sky exposure, where they can be counteracted by simply going underground (Note: To count as being underground, there simply needs to be at least 1 solid block separating you and the sky). Known potion effects caused by instability include:

* Mining Fatigue
* Slowness
* Poison
* Nausea
* Hunger
* Blindness
* Weakness

-note that glass block doesnt count as a block that separating you from the sky {{verify}}

There are also at least 2 things that give benefits to non-player mobs in the world.

* Regeneration
* Resistance

Because these are the first level of instability, it is possible for an age to show no outward sign of anything being unusual yet still have effects making mobs harder to kill.

=== Bugs ===
Some modded blocks seem to not count as "solid" blocks, even though they are, and do not block Sky Exposure effects

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Scorched Surface ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==
Any of these will, unless countered by some sort of mod power, will ultimately result in the destruction of everything in the age, and potentially even leaving a void age in the case of meteors and black decay.

=== Meteors ===
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

[[File:Colored Decay.png|thumb|Example of some colored decay.]]
Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond pick: aprox. 3 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Blue decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: aprox. 10 seconds.{{Verify}} 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It breaks around as fast as obsidian {{verify}}. If you are in the air, it's even worse than the feared White Decay.{{verify}}
It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Erosion ===

"Crumble" will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

v0.13:Instability

2018-06-20T01:00:20Z

Keybounce: Charged.

{{av}}
[[File:White decay.png|thumb|Example of some white decay.]]

'''Instability''' is a balance mechanic in Mystcraft which is a result of poor or greedy writing.

== Levels of Instability ==
Instability comes in several degrees of severity. The weakest form a world that is vaguely inhospitable to outsiders. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle severity form worlds that are generally dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final severity are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

=== Severity Mechanics ===
Internally, instability can be generated (or reduced) based on factors of writing. Some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.
Other factors include mod behavior (other mods can add or subtract instability) and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated based on what blocks the world contains).

Each type of instability can be individually disabled in the config file; if the nausea effect (for example) is a problem, one can disable only that and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well). These are managed internally using card deck mechanics.

== Buffs and Debuffs ==

Negative potion effects sometimes occur in a Mystcraft Age. These can either be ambient, where they are unchanging, or due to sky exposure, where they can be counteracted by simply going underground (Note: To count as being underground, there simply needs to be at least 1 solid block separating you and the sky). Known potion effects caused by instability include:

* Mining Fatigue
* Slowness
* Poison
* Nausea
* Hunger
* Blindness
* Weakness

-note that glass block doesnt count as a block that separating you from the sky {{verify}}

There are also at least 2 things that give benefits to non-player mobs in the world.

* Regeneration
* Resistance

Because these are the first level of instability, it is possible for an age to show no outward sign of anything being unusual yet still have effects making mobs harder to kill.

=== Bugs ===
Some modded blocks seem to not count as "solid" blocks, even though they are, and do not block Sky Exposure effects

== Harmful environment ==
=== Random Explosions ===
Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End, or Skylands world, but they are generally incapable of destroying blocks such as Stone.

=== Burning Effect ===
Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

=== Charged ===
Lightning strikes will occur at random in the world.
All the normal effects of lightning will happen (creepers charge, trees catch on fire, etc.)

== World Destroying ==
Any of these will, unless countered by some sort of mod power, will ultimately result in the destruction of everything in the age, and potentially even leaving a void age in the case of meteors and black decay.

=== Meteors ===
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) {{verify}} 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

[[File:Colored Decay.png|thumb|Example of some colored decay.]]
Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond pick: aprox. 3 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Blue decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: aprox. 10 seconds.{{Verify}} 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It breaks around as fast as obsidian {{verify}}. If you are in the air, it's even worse than the feared White Decay.{{verify}}
It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Erosion ===

"Crumble" will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

v0.13:Instability

2018-06-17T05:54:20Z

Keybounce: Restructure the instability page, about 50% rewrite

{{av}}
[[File:White decay.png|thumb|Example of some white decay.]]

'''Instability''' is a balance mechanic in Mystcraft which is a result of poor or greedy writing.

More specifically, instability comes in several flavors. The weakest flavor represents a world that, while not inherently unstable, is sufficiently different than what you are used to that you take a penalty. These are worlds that inflict potion-style debuffs on you, or that give mobs in the world a benefit/positive buff. The weakest form of these only affect you when you are "outdoors" (exposed to the sky); stronger forms affect you when you are inside/underground.

The middle flavor represents worlds that while stable, are dangerous. Worlds that are so close to the sun that you (and mobs in the world) take damage from the environment. Etc.

The final flavor are worlds that will be destroyed given enough time. This can range from meteors, to decay blocks, to runaway erosion.

Internally, instability can be generated (or reduced) based on factors of writing (some symbols, such as "lacking medium features", directly add; others, typically that duplicate an instability affect, directly reduce. Explicitly writing inconsistencies will add, as will using "clear modifiers" to remove dangling modifiers.), mod behavior (other mods can add or subtract instability), and general luck/variation as the world is explored (approximately every 100 chunks the instability level is recalculated).

Each type of instability can be individually disabled in the config file; for players for whom the nausea effect (for example) is a problem, they can disable that one and leave the others. On a server, the server must disable the unwanted effects.

Because instability levels can change over time, the current version of Mystcraft does not put block-based instability into the chunks at world gen, but alters the chunk during play.

Internally, there are 5 categories of instability levels. However, there is overlap at different levels of probability. World destruction is only found in the last 2 categories, for example, but different forms of world destruction are found at different probabilities in those 2 categories. Harmful environment can be found in the last 3 categories. Potion effects are found in at least the first 3 categories, can happen multiple times (will stack to a stronger potion effect level), and in later categories will affect you when you are not exposed to the sky (global/affecting the underground as well).

== Buffs and Debuffs ==

Negative potion effects sometimes occur in a Mystcraft Age. These can either be ambient, where they are unchanging, or due to sky exposure, where they can be counteracted by simply going underground (Note: To count as being underground, there simply needs to be at least 1 solid block separating you and the sky). Known potion effects caused by instability include:

* Mining Fatigue
* Slowness
* Poison
* Nausea
* Hunger
* Blindness
* Weakness

-note that glass block doesnt count as a block that separating you from the sky {{verify}}

There are also at least 2 things that give benefits to non-player mobs in the world.

* Regeneration
* Resistance

Because these are the first level of instability, it is possible for an age to show no outward sign of anything being unusual yet still have effects making mobs harder to kill.

=== Bugs ===
Some modded blocks seem to not count as "solid" blocks, even though they are, and do not block Sky Exposure effects

== Harmful environment ==
Random Explosions is an effect which sometimes results from unstable ages. Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End or Skylands world, but they are seemingly incapable of destroying blocks such as Stone.

Mobs and players can be set on fire. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. {{Verify}}

== World Destroying ==
Any of these will, unless countered by some sort of mod power, will ultimately result in the destruction of everything in the age, and potentially even leaving a void age in the case of meteors and black decay.

=== Meteors ===
Meteors will fall randomly from the sky and destroy large sections of the world. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

=== Decay Blocks ===
Several types of Colored Decay exist.

==== Black Decay ====

Time to break with diamond shovel: "fast" (Needs better testing.) 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
It only {{verify}} spreads to existing blocks, and it spreads faster up and down than it does to the sides{{verify}} (( this seems really wrong; in 1.4.7 my memory is that it would only spread down and sideways, not up, and would spread faster sideways. I have not seen black decay in modern Mystcraft )). It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

Black decay will spread through bedrock. If it reaches the bottom of the world, then the entire column of blocks above it will fall out of the world.

Black decay collapsing will stop at air blocks; because of the presence of caves, or even a manually placed/carved airgap, black decay will leave scattered islands, at least temporarily. Because new decay blocks will be placed over time, eventually those platforms will go as well.

When a column collapses, the 4 neighboring columns can have air gaps collapse if the collapsing column goes up to the top of the air.

Any water on top of a collapsing column is deleted (replaced with air) {{verify}} the effect on other liquids such as lava.

==== Blue Decay ====

[[File:Colored Decay.png|thumb|Example of some colored decay.]]
Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on mining hardness. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Red Decay ====

Time to break with diamond pick: aprox. 3 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: Spreads based on TNT resistance. 
 
Blue decay travels through blocks at a speed based on the explosion resistance; blocks that are easier to blow up with TNT will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

==== Purple Decay ====

Time to break with diamond pick: aprox. 10 seconds.{{Verify}} 
Speed: Medium. 
Unique feature: Spreads through liquids, other decay blocks, and air. 
 

It breaks around as fast as obsidian {{verify}}. If you are in the air, it's even worse than the feared White Decay.{{verify}}
It spreads rapidly through liquids, a little slower through other decay blocks, slower yet through air (but faster than red or blue spread through air), and very slow through ground blocks.

It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT. {{verify}}

Purple decay will not spread through bedrock.

==== White Decay ====

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay acts like the other colored decays, but eats through everything much quicker. It will eat through other decay blocks (tested in 1.4.7; even a black decay heavy world was calmed down. {{verify}} for current Mystcraft), and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

=== Erosion ===

"Crumble" will cause blocks to break down. Diamond ore will turn into coal ore. Smooth stone will turn into cobblestone. Gravel will turn into sand. Etc.

Given enough time, this will result in a world that is entirely sand.

In the most extreme form, bedrock will also erode, and the outcome will be a void world.

v0.13:Instability

2018-06-17T04:21:44Z

Keybounce: Blue Decay spreads based on mining hardness

{{av}}
[[File:White decay.png|thumb|Example of some white decay.]]

'''Instability''' is a balance mechanic in Mystcraft which is a result of poor or greedy writing. It will eventually end the Age, depending on how severe the instability is. There are several forms of instability that an age can experience.

== Meteors ==
Meteors will fall randomly from the sky and destroy large sections of the world either when the world is very unstable or when the meteors are specified to do so with a Meteors page. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

== Decay Blocks ==
Several types of Decay exist, depending on the level of corruption of a world:

=== Black Decay ===
----

Time to break with diamond shovel: "fast" (Needs better testing.) 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
Possibly the most benign form of Decay, especially to Skylands or Void worlds. It mostly spreads to existing blocks, and it spreads faster up and down than it does to the sides. It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

=== Blue Decay ===
----

[[File:Colored Decay.png|thumb|Example of some colored decay.]]
Time to break with diamond pick: aprox. 2 seconds. {{Verify}} 
Speed: Medium. 
Unique feature: None. 
 
Blue decay travels through blocks at a speed based on the mining hardness; blocks that are easier to mine will spread faster. It will not spread through bedrock.

It can be blown up with TNT.

=== Red Decay ===
----

Time to break with diamond pick: aprox. 3 seconds. 
Speed: Medium. 
Unique feature: None. 
 
Similar to blue decay, but harder to clean up. It can be blown up with TNT.

=== Purple Decay ===
----

Time to break with diamond pick: aprox. 10 seconds. 
Speed: Medium. 
Unique feature: Spreads through air just as fast as the ground. 
 
It breaks around as fast as obsidian, and behaves similarly to Blue and Red Decay, but without the speed penalty while traveling through air. It's nothing special if you are on the ground, but if you are in the air, it's even worse than the feared White Decay.
It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT.

=== White Decay ===
----

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay is a death sentence for an Age. It acts like red and blue decay, but eats through the ground much quicker, it also eats through other forms of decay as other blocks, and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

== Other Negative Effects ==
Random Explosions is an effect which sometimes results from unstable ages. Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End or Skylands world, but they are seemingly incapable of destroying blocks such as Stone.

Negative potion effects sometimes occur in a Mystcraft Age. These can either be ambient, where they are unchanging, or due to sky exposure, where they can be counteracted by simply going underground (Note: To count as being underground, there simply needs to be at least 1 solid block separating you and the sky). Known potion effects caused by instability and their causes are listed here:

* Mining Fatigue II-IV, ambient
* Slowness II-IV, sky exposure/ambient (?)
* Poison III, sky exposure
* Nausea II-III, sky exposure
* Hunger III, sky exposure
* Blindness I, ambient
* Weakness I, sky exposure

-note that glass block doesnt count as a block that separating you from the sky

A slightly unstable Mystcraft Age can also sometimes apply a fire status to mobs and players when exposed to the sky. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. (?)

=== Bugs ===
Some modded blocks seem to not count as "solid" blocks, even though they are, and do not block Sky Exposure effects

v0.13:Instability

2018-06-17T04:13:13Z

Keybounce: Black Decay uses shovels.

{{av}}
[[File:White decay.png|thumb|Example of some white decay.]]

'''Instability''' is a balance mechanic in Mystcraft which is a result of poor or greedy writing. It will eventually end the Age, depending on how severe the instability is. There are several forms of instability that an age can experience.

== Meteors ==
Meteors will fall randomly from the sky and destroy large sections of the world either when the world is very unstable or when the meteors are specified to do so with a Meteors page. Meteors can destroy the entire world if given enough time. Meteors may leave some ores around the crater.

== Decay Blocks ==
Several types of Decay exist, depending on the level of corruption of a world:

=== Black Decay ===
----

Time to break with diamond shovel: "fast" (Needs better testing.) 
Speed: Low. 
Unique feature: Causes ground to collapse. 
 
Possibly the most benign form of Decay, especially to Skylands or Void worlds. It mostly spreads to existing blocks, and it spreads faster up and down than it does to the sides. It also has the unique trait when two blocks form on top of each other, they will merge into one block of decay and cause every block above it to fall, even blocks that are normally unaffected by gravity. It can be blown up with TNT.

=== Blue Decay ===
----

[[File:Colored Decay.png|thumb|Example of some colored decay.]]
Time to break with diamond pick: aprox. 2 seconds. 
Speed: Medium. 
Unique feature: None. 
 
Blue decay travels moderately fast in all directions. It can travel through air, but moves around 5X slower than through existing blocks.
It can be blown up with TNT.

=== Red Decay ===
----

Time to break with diamond pick: aprox. 3 seconds. 
Speed: Medium. 
Unique feature: None. 
 
Similar to blue decay, but harder to clean up. It can be blown up with TNT.

=== Purple Decay ===
----

Time to break with diamond pick: aprox. 10 seconds. 
Speed: Medium. 
Unique feature: Spreads through air just as fast as the ground. 
 
It breaks around as fast as obsidian, and behaves similarly to Blue and Red Decay, but without the speed penalty while traveling through air. It's nothing special if you are on the ground, but if you are in the air, it's even worse than the feared White Decay.
It has an 85% chance to spawn in a Dense Ores World{{verify}}. It can NOT be blown up with TNT.

=== White Decay ===
----

Time to break with diamond pick: aprox. 10 seconds. 
Speed: fast. 
Unique feature: Can damage player. 
 
[[File:White decay 20min.png|thumbnail|right|White decay after 20 minutes of instability, beginning to grow over meteor craters.]]
White Decay is a death sentence for an Age. It acts like red and blue decay, but eats through the ground much quicker, it also eats through other forms of decay as other blocks, and slowly grows into the air. It is also the only decay that can physically harm the player. It deals an armor-penetrating half-heart of damage per second, but only if the player is moving. It can NOT be blown up with TNT.

== Other Negative Effects ==
Random Explosions is an effect which sometimes results from unstable ages. Explosions are created randomly. These explosions can light blocks on fire, deal damage to the player and knock the player off the world if it is a Void, End or Skylands world, but they are seemingly incapable of destroying blocks such as Stone.

Negative potion effects sometimes occur in a Mystcraft Age. These can either be ambient, where they are unchanging, or due to sky exposure, where they can be counteracted by simply going underground (Note: To count as being underground, there simply needs to be at least 1 solid block separating you and the sky). Known potion effects caused by instability and their causes are listed here:

* Mining Fatigue II-IV, ambient
* Slowness II-IV, sky exposure/ambient (?)
* Poison III, sky exposure
* Nausea II-III, sky exposure
* Hunger III, sky exposure
* Blindness I, ambient
* Weakness I, sky exposure

-note that glass block doesnt count as a block that separating you from the sky

A slightly unstable Mystcraft Age can also sometimes apply a fire status to mobs and players when exposed to the sky. The fire damage is done in short bursts at approximately 5 second intervals that tick for 4-5 points of damage to mobs, but less than half a heart damage to unarmoured players. (?)

=== Bugs ===
Some modded blocks seem to not count as "solid" blocks, even though they are, and do not block Sky Exposure effects