Armour class - Revision history

Hordes: /* Guaranteed Damage Reduction */

2026-01-08T17:05:26Z

‎Guaranteed Damage Reduction

Hordes: /* Guaranteed Damage Reduction */

2026-01-08T17:05:05Z

‎Guaranteed Damage Reduction

Hordes: move the AC calculations part to Armour (for more consistency with shields)

2024-01-15T10:14:30Z

move the AC calculations part to Armour (for more consistency with shields)

Hordes at 08:26, 12 January 2024

2024-01-12T08:26:07Z

Hordes at 05:57, 9 January 2024

2024-01-09T05:57:31Z

Hordes: /* Guaranteed Damage Reduction */

2024-01-07T21:52:12Z

‎Guaranteed Damage Reduction

Hordes: /* Calculating AC Value */ correct deformed values

2024-01-07T00:18:56Z

‎Calculating AC Value: correct deformed values

Hordes at 00:12, 7 January 2024

2024-01-07T00:12:55Z

Hordes at 00:11, 7 January 2024

2024-01-07T00:11:30Z

Hordes: merge AC calculations here

2024-01-07T00:09:26Z

merge AC calculations here

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 ''Main Article: [[GDR]]''
-When taking physical damage from a weapon (melee, ranged weapon, or throwing) attack, guaranteed damage reduction will improve AC rolls. GDR% is equal to <code>16*(AC)^1/4</code>. If GDR is applied, the minimum possible AC roll will equal (damage*GDR%) or (AC/2), whichever is lower. Spells and abilities, including 'physical' spells like [[Harpoon Shot]] or [[Stone Arrow]], do not use GDR. Only the player benefits from GDR.
+When taking physical damage from a melee, ranged weapon, or throwing attack, guaranteed damage reduction will improve AC rolls. GDR% is equal to <code>16*(AC)^1/4</code>. If GDR is applied, the minimum possible AC roll will equal (damage*GDR%) or (AC/2), whichever is lower. Spells and abilities, including 'physical' spells like [[Harpoon Shot]] or [[Stone Arrow]], do not use GDR. Only the player benefits from GDR.
 ==List of Damage that ignores AC==

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 ''Main Article: [[GDR]]''
-When taking physical damage from a melee attack, guaranteed damage reduction will improve AC rolls. GDR% is equal to <code>16*(AC)^1/4</code>. If GDR is applied, the minimum possible AC roll will equal (damage*GDR%) or (AC/2), whichever is lower. GDR only applies to melee, ranged weapon, and throwing attacks. Only the player benefits from GDR.
+When taking physical damage from a weapon (melee, ranged weapon, or throwing) attack, guaranteed damage reduction will improve AC rolls. GDR% is equal to <code>16*(AC)^1/4</code>. If GDR is applied, the minimum possible AC roll will equal (damage*GDR%) or (AC/2), whichever is lower. Spells and abilities, including 'physical' spells like [[Harpoon Shot]] or [[Stone Arrow]], do not use GDR. Only the player benefits from GDR.
 ==List of Damage that ignores AC==

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 <code>BEAM_ELEC</code> damage (such as from [[Shock]] or [[Lightning Bolt]]) ignores half of the target's AC. <code>BEAM_FRAG</code> damage (such as from [[Sandblast]] or a [[tin of tremorstones]]) is affected three times as much by AC.
 ===Guaranteed Damage Reduction===
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 When taking physical damage from a melee attack, guaranteed damage reduction will improve AC rolls. GDR% is equal to <code>16*(AC)^1/4</code>. If GDR is applied, the minimum possible AC roll will equal (damage*GDR%) or (AC/2), whichever is lower. GDR only applies to melee, ranged weapon, and throwing attacks. Only the player benefits from GDR.
 ==List of Damage that ignores AC==
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 *Prior to [[0.29]], [[Frozen Ramparts]] and [[Ozocubu's Refrigeration]] ignored AC.
 *Prior to [[0.26]], [[Irradiate]] ignored AC.
 [[Category:Stats]]
 [[Category:Game mechanics]]
 [[Category:Defence]]

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 ''Main Article: [[GDR]]''
-When taking physical damage from a melee attack, guaranteed damage reduction will improve AC rolls. GDR% is equal to <code>16*(AC)^1/4</code>. If GDR is applied, the minimum possible AC roll will equal (damage*GDR%) or (AC/2), whichever is lower. GDR only applies to melee, ranged weapon, and throwing attacks.
+When taking physical damage from a melee attack, guaranteed damage reduction will improve AC rolls. GDR% is equal to <code>16*(AC)^1/4</code>. If GDR is applied, the minimum possible AC roll will equal (damage*GDR%) or (AC/2), whichever is lower. GDR only applies to melee, ranged weapon, and throwing attacks. Only the player benefits from GDR.
 ==Calculating AC Value==

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 Where "base AC" equals the ''sum'' of base AC from every worn armour (excluding any armour [[enchant]]ment). Rounding does not occur until all armour pieces have been calculated. Overall, Armour skill provides roughly +4.5% base AC per level.
-If you have the [[deformed]] or [[Jiyva mutations#Pseudopods|Pseudopods]] mutations, you lose AC equal to <code>(base AC) * 50%</code>, where the penalty is rounded down. These mutations do not stack with each other. Note that these mutations only consider base AC, not AC after Armour skill.
+If you have the [[deformed]] or [[Jiyva mutations#Pseudopods|Pseudopods]] mutations, you lose AC equal to <code>(body armour base AC) * 50%</code>, where the penalty is rounded down. These mutations do not stack with each other. Note that these mutations only consider base AC, not AC after Armour skill.
 All other sources of AC are flat, additive bonuses to your AC score, which are not impacted by Armour skill:<ref>{{source ref|0.28.0|player.cc|5914}}</ref>

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     (base AC) * (Armour skill / 22 + 1) rounded down
-Where "base AC" equals the ''sum'' of base AC from every worn armour (this excludes any [[enchant]]ment). Rounding does not occur until all armour pieces have been calculated. Overall, Armour skill provides roughly +4.5% base AC per level.
+Where "base AC" equals the ''sum'' of base AC from every worn armour (excluding any armour [[enchant]]ment). Rounding does not occur until all armour pieces have been calculated. Overall, Armour skill provides roughly +4.5% base AC per level.
-Then, if you have the [[deformed]] or have [[Jiyva mutations#Pseudopods|Pseudopods]], this value is halved, rounded down.
+Then, if you have the [[deformed]] or [[Jiyva mutations#Pseudopods|Pseudopods]] mutations, this value is halved, rounded down.
 All other sources of AC are flat, additive bonuses to your AC score, which are not impacted by Armour skill:<ref>{{source ref|0.28.0|player.cc|5914}}</ref>

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 When something injures you, your '''armour class''' (often abbreviated to '''AC''') reduces the amount of damage you suffer. The higher the value, the better.
-The most common way to improve your AC is by wearing [[armour]]. Wearing heavier [[body armour]] provides more AC, but comes at the cost of [[encumbrance]] - reducing [[EV]], [[spell failure|spell success]] rates, and [[stealth]]. Other types of armour, like [[helmet]]s and [[boot]]s, provide AC with no penalty.
+The most common way to improve your AC is by wearing [[armour]]. Wearing heavier [[body armour]] provides more AC, but comes at the cost of [[encumbrance]] - reducing [[EV]], [[spell failure|spell success]] rates, and [[stealth]]. Other types of armour, like [[helmet]]s and [[boots]], provide AC with no penalty.
 ==Useful Info==
-AC reduces the damage of attacks by an absolute value between 0 and your current AC value. An AC of 10 will reduce damage by a random number between 0 and 10. This applies to damage that would traditionally ignore armour in other games, like [[spell]] magic.
+AC reduces the damage of attacks by an absolute value between 0 and your current AC value. An AC of 10 will reduce damage by a random number between 0 and 10. This applies to damage that would traditionally ignore armour in other games, such as [[spell]] magic.
 <code>BEAM_ELEC</code> damage (such as from [[Shock]] or [[Lightning Bolt]]) ignores half of the target's AC. <code>BEAM_FRAG</code> damage (such as from [[Sandblast]] or a [[tin of tremorstones]]) is affected three times as much by AC.
@@ Line 19: / Line 19: @@
     (base AC) * (Armour skill / 22 + 1) rounded down
-Where "base AC" equals the ''sum'' of base AC from every worn armour (this excludes armour [[enchant]]ment). Rounding does not occur until all armour pieces have been calculated. Overall, Armour skill provides roughly +4.5% base AC per level.
+Where "base AC" equals the ''sum'' of base AC from every worn armour (this excludes any [[enchant]]ment). Rounding does not occur until all armour pieces have been calculated. Overall, Armour skill provides roughly +4.5% base AC per level.
-Then, if you have the [[deformed]] or have [[Jiyva mutations#Pseudopods|Pseudopods]], this value is halved rounded down.
+Then, if you have the [[deformed]] or have [[Jiyva mutations#Pseudopods|Pseudopods]], this value is halved, rounded down.
-All other sources of AC are flat, additive bonuses to your AC score. These are not impacted by Armour skill at all:<ref>{{source ref|0.28.0|player.cc|5914}}</ref>
+All other sources of AC are flat, additive bonuses to your AC score, which are not impacted by Armour skill:<ref>{{source ref|0.28.0|player.cc|5914}}</ref>
 *Value from armour [[enchant]]ment, [[rings of protection]], and [[artefact]] bonuses
 *[[Ozocubu's Armour]]