Difference between revisions of "Acid"

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(as of 0.17, corrosion is -4 to slaying and ac. article still needs more editing to be up-to-date, though)
(Remove all references to acid degrading equipment, use rCorr instead of rAcid, only one rank of rCorr, update slime walls etc.)
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{{version014}}
 
{{version014}}
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'''Acid''' is a [[damage type]] that can be reduced by filling as many of your [[armour slot]]s as possible. This protection comes at a price, as every piece of armour worn has a chance of being temporarily '''corroded'''.
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'''Acid''' is a [[damage type]] most commonly dealt by jelly and yellow draconians, which can be resisted with resist corrosion.  It no longer corrodes your equipment, but instead applies temporary corrosion status, which lowers your AC and slaying.
  
 
==Sources of Acid==
 
==Sources of Acid==
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*[[The royal jelly]]
 
*[[The royal jelly]]
 
*[[Dissolution]]
 
*[[Dissolution]]
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Hitting such monsters with a melee weapon (or any wielded piece of armour) has a 30% chance of corroding that weapon. If you are wielding nothing but wearing [[gloves]], your gloves may corrode. If you are completely bare-handed, you will take 1d5 acid damage.  Attacks other than punches (e.g. auxiliary kicks, tail slaps, etc.) will not incur damage or corrosion.
 
  
 
===Acid Spit===
 
===Acid Spit===
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*[[Oklob sapling]] 3d7 (3d3)
 
*[[Oklob sapling]] 3d7 (3d3)
  
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The above damage bypasses AC. In addition to the above damage, acid spit causes 5 levels of "acid splash" damage (described below) which will harm you and can corrode your armour.
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The above damage bypasses AC and may add corrosion status.
  
 
===Acidic Melee Attacks===
 
===Acidic Melee Attacks===
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*[[Royal jelly]]
 
*[[Royal jelly]]
 
*[[Dissolution]]
 
*[[Dissolution]]
−
 
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When struck by these monsters in melee, you will receive 3 levels of acid splash damage in addition to any regular (physical) damage the attack causes.
 
  
 
===Slime Walls===
 
===Slime Walls===
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Standing next to the [[wall]]s of [[the Slime Pits]] will cause one level of acid splash damage for every level of depth, reaching 6 levels of splash damage on Slime:6. This damage is applied by every wall you are adjacent to: if you are surrounded by walls on Slime:1, you will receive eight separate level 1 splashes. Monsters without acid resistance will receive a flat 2d(level) damage from each wall.
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Standing next to the [[wall]]s of [[the Slime Pits]] will cause players and non-jelly monsters to take damage, although it does not cause the corrosion status.
  
 
Worshipers of [[Jiyva]] are unaffected by slime walls.  
 
Worshipers of [[Jiyva]] are unaffected by slime walls.  
  
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Thankfully, the acid splash from slime walls '''does not corrode items'''. But given how many monsters in the slime pits have corrosive attacks, this is of limited consolation.
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==Corrosion Resistance==
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Corrosion resistance reduces damage taken from acid and reduces the chance of being further corroded.
  
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===Acid Splash===
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The sources of Corrosion resistance are:
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An acid splash will strike every [[armour slot]] - shield, helmet, body armour, gloves, boots, and cloak - with a chance of corroding each equal to the splash's level * 5%. If you are wearing a [[cloak]], it has a 50% chance of negating a successful corrosion against the helmet, body armour, gloves, and boots slots (each rolled separately). This protection will not harm the cloak, which can only sustain damage when the cloak slot is corroded.
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*being a yellow [[draconian]]
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*[[Ring of resist corrosion]]
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If you are not wearing armour in a given slot (excepting the shield slot), you will take 1d(splash level) damage (a cloak's 50% negation chance can also protect you from this). The [[Good_mutations#Fur|fur mutation]] ([[troll]]s and [[felid]]s) will reduce this damage by 20% per level of mutation.
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*[[Tiamat]]'s [[dragonskin cloak]] (50% chance per attack)
−
 
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*Having the [[Good_mutations#Yellow_Scales|yellow scales]] mutation at level 3
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2d(splash level) damage is then added to the above, meaning a splash can cause anywhere from 2dX to 7dX damage. Finally, the total damage is reduced by your acid resistance, as shown below.
 
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==Acid Resistance==
 
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Acid resistance protects you from any damage that gets past your armour. It is distinct from corrosion resistance, which protects your weapon and armour.
 
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The sources of acid resistance are:
 
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*being a yellow [[draconian]]: rAcid+
 
−
*[[Amulet of resist corrosion]]: rAcid+
 
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*[[Tiamat]]'s [[dragonskin cloak]] (50% chance per attack of rAcid+)
 
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*Having the [[Good_mutations#Yellow_Scales|yellow scales]] mutation: rAcid+ for level 3.
 
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−
The maximum resistance possible is rAcid+++.
 
  
 
===Damage Reduction===
 
===Damage Reduction===
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{| class="wikitable"
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Players with corrosion resistance take 50% damage from acid. All monsters with any degree of acid resistance are completely immune to acid damage.
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! Resistance Level !! Damage Taken (Player) !! Damage Taken (Monster)
 
−
|-
 
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| 1 || 50% || 0%
 
−
|-
 
−
| 2 || 34% || 0%
 
−
|-
 
−
| 3 || 27% || 0%
 
−
|}
 
−
 
 
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Any fractional amount remaining is rounded down (if you get hit with 3 points of acid damage and you have rAcid+, you will only take 1 point of damage; if you have rAcid+++, you will take no damage). Acid resistance is effective against acid spit and splashes but does not reduce the damage received when punching an acidic monster.
 
−
 
 
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All monsters with any degree of acid resistance are completely immune to acid damage.
 
  
 
==Corrosion==
 
==Corrosion==
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==History==
 
==History==
 
Prior to [[0.15]], corrosion instead caused permanent damage to weapons and armor, reducing their enchantment values, possibly into the negatives. Also, [[potions of resistance]] did not grant rAcid or rCorr.
 
Prior to [[0.15]], corrosion instead caused permanent damage to weapons and armor, reducing their enchantment values, possibly into the negatives. Also, [[potions of resistance]] did not grant rAcid or rCorr.
 +
There were previously three tiers of acid resistance, each one further reducing acid damage; now there is only one level which is merged with corrosion resistance.
  
 
[[Category:Damage types]]
 
[[Category:Damage types]]

Revision as of 00:52, 12 April 2017

Version 0.14: This article may not be up to date for the latest stable release of Crawl.

Acid is a damage type most commonly dealt by jelly and yellow draconians, which can be resisted with resist corrosion. It no longer corrodes your equipment, but instead applies temporary corrosion status, which lowers your AC and slaying.

Sources of Acid

Acidic damage can come from several sources.

Acidic Flesh

Some monsters have acidic flesh:

Acid Spit

The following monsters can spit acid:

The above damage bypasses AC and may add corrosion status.

Acidic Melee Attacks

The following monsters have acidic melee attacks:

Slime Walls

Standing next to the walls of the Slime Pits will cause players and non-jelly monsters to take damage, although it does not cause the corrosion status.

Worshipers of Jiyva are unaffected by slime walls.

Corrosion Resistance

Corrosion resistance reduces damage taken from acid and reduces the chance of being further corroded.

The sources of Corrosion resistance are:

Damage Reduction

Players with corrosion resistance take 50% damage from acid. All monsters with any degree of acid resistance are completely immune to acid damage.

Corrosion

Corrosion is a temporary status effect which gives a stackable -4 to slaying and AC for as long as it lasts. Corrosion will be repaired after enough turns have passed.

History

Prior to 0.15, corrosion instead caused permanent damage to weapons and armor, reducing their enchantment values, possibly into the negatives. Also, potions of resistance did not grant rAcid or rCorr. There were previously three tiers of acid resistance, each one further reducing acid damage; now there is only one level which is merged with corrosion resistance.

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