Energy drain - Revision history

Umbire the Phantom: dropped word

2025-08-25T00:26:08Z

dropped word

Umbire the Phantom: /* dNetHack */ overdue fix

2025-08-25T00:25:54Z

‎dNetHack: overdue fix

Umbire the Phantom: /* SpliceHack */ tense

2025-08-25T00:25:34Z

‎SpliceHack: tense

Umbire the Phantom: /* dNetHack */ touch-ups

2025-08-25T00:25:24Z

‎dNetHack: touch-ups

Umbire the Phantom: /* Description */ pothole

2025-08-25T00:24:25Z

‎Description: pothole

Umbire the Phantom: completely forgot mhitm/uhitm!

2025-01-03T12:25:53Z

completely forgot mhitm/uhitm!

Umbire the Phantom: lede

2024-12-17T10:41:55Z

lede

Umbire the Phantom: /* Description */ correction and cite - need to double check though...

2024-12-17T10:00:53Z

‎Description: correction and cite - need to double check though...

Umbire the Phantom: splice

2024-12-16T12:49:55Z

splice

Umbire the Phantom: todos

2024-12-16T12:47:53Z

todos

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 '''Energy drain''' is a [[damage type]] in ''[[NetHack]]'' that drains [[energy]] from the [[hero]] or a [[monster]] in lieu of dealing actual damage to their [[HP]], and uses the flag '''<tt>AD_DREN</tt>'''. The only monster with the energy drain damage type is the [[energy vortex]], which uses it as part of its second [[engulfing]] attack to drain energy from an already-engulfed target.
-This damage type is one of only three sources of energy loss in ''NetHack'', along with cursed [[potion of gain energy]] and the [[anti-magic field]].
+This damage type is one of only three sources of energy loss in ''NetHack'', along with the cursed [[potion of gain energy]] and the [[anti-magic field]].
 ==Description==

@@ Line 40: / Line 40: @@
 In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], multiple monsters have attacks that drain energy:
-* [[Weeping angel (UnNetHack)|weeping angel]] (touch)
+* [[Weeping angel (dNetHack)|weeping angel]] (touch)
 * [[gray devourer]] ([[bite]])
 * [[Malcanthet (dNetHack)|Malcanthet]] (claw)

@@ Line 35: / Line 35: @@
 ===SpliceHack===
-In older versions of [[SpliceHack]], [[Greed]] is a monster that has a energy-draining touch attack.
+In older versions of [[SpliceHack]], [[Greed]] is a monster that has an energy-draining touch attack.
 ===dNetHack===

@@ Line 40: / Line 40: @@
 In [[dNetHack]], [[notdNetHack]] and [[notnotdNetHack]], multiple monsters have attacks that drain energy:
-* [[Weeping angel (UnNetHack)|weeping angels]] via touch attack
+* [[Weeping angel (UnNetHack)|weeping angel]] (touch)
-* [[gray devourers]] via bite
+* [[gray devourer]] ([[bite]])
-* [[Malcanthet (dNetHack)|Malcanthet]] via claw attack
+* [[Malcanthet (dNetHack)|Malcanthet]] (claw)
-* [[Incantifier (monster)|incantifiers]] via touch attacks
+* [[Incantifier (monster)|incantifier]] (touch)
-* [[kuo toa]] via touch attack
+* [[kuo toa]] (touch)
-* [[kuo toa whip]]s via touch attack
+* [[kuo toa whip]] (touch)
 ==References==

@@ Line 6: / Line 6: @@
 There are differences between energy drain's functions against a hero compared to against a monster, due to monsters lacking a formal energy system governing their abilities like the hero.
-If a hero is engulfed by an energy vortex, they have a {{frac|3|4}} chance of losing an amount of energy dependent on their [[experience level]]:{{refsrc|src/mhitu.c|300|nethack=3.6.7}}{{refsrc|src/mhitu.c|1998|nethack=3.6.7}} the base damage dice used is 2d6, with adjustments made depending on their current and maximum energy&mdash;the outcomes can range from 1d3 points of energy drain for heroes with very low energy, up to 3d9 for heroes with very high energy. If a hero is hit by the energy vortex's energy-draining attack during the grace period where they cannot be re-engulfed, the engulfing attack is converted to a claw attack which has a {{frac|4}} chance of the hero's energy being drained on hit, with the same rules applied.{{refsrc|src/mhitu.c|1572|nethack=3.6.7}}{{refsrc|src/mhitu.c|319|nethack=3.6.7}} [[AC]] and [[magic cancellation]] can block the latter instance of the attack, but not the former.
+If a hero is engulfed by an energy vortex, they have a {{frac|3|4}} chance of losing an amount of energy dependent on their [[experience level]]:{{refsrc|src/mhitu.c|300|nethack=3.6.7}}{{refsrc|src/mhitu.c|1998|nethack=3.6.7}} the base damage dice used is 2d6, with adjustments made depending on their current and maximum energy&mdash;the outcomes can range from 1d3 points of energy drain for heroes with very low energy, up to 3d9 for heroes with very high energy. If a hero is hit by the energy vortex's energy-draining attack during the grace period where they cannot be re-engulfed, the engulfing attack is converted to a [[claw attack]] which has a {{frac|4}} chance of the hero's energy being drained on hit, with the same rules applied.{{refsrc|src/mhitu.c|1572|nethack=3.6.7}}{{refsrc|src/mhitu.c|319|nethack=3.6.7}} [[AC]] and [[magic cancellation]] can block the latter instance of the attack, but not the former.
-A monster that is hit by the converted touch attack of an energy vortex has a {{frac|4}} chance of losing the ability to use [[Monster spell|magic abilities]] or [[breath weapon]]s for several turns.{{refsrc|src/mhitm.c|1371|nethack=3.6.7}}{{refsrc|src/mhitm.c|1738|nethack=3.6.7}} A hero [[polymorph]]ed into an energy vortex can do the same against monsters using both of the vortex's attacks.{{refsrc|src/uhitm.c|1882|nethack=3.6.7}}{{refsrc|src/mhitm.c|2304|nethack=3.6.7}}
+A monster that is hit by the converted claw attack of an energy vortex has a {{frac|4}} chance of losing the ability to use [[Monster spell|magic abilities]] or [[breath weapon]]s for several turns.{{refsrc|src/mhitm.c|1371|nethack=3.6.7}}{{refsrc|src/mhitm.c|1738|nethack=3.6.7}} A hero [[polymorph]]ed into an energy vortex can do the same against monsters using both of the vortex's attacks.{{refsrc|src/uhitm.c|1882|nethack=3.6.7}}{{refsrc|src/mhitm.c|2304|nethack=3.6.7}}
 [[Canceling]] an energy vortex can nullify its energy-draining ability.

← Older revision		Revision as of 10:41, 17 December 2024
Line 1:		Line 1:
−	'''Energy drain''' is a [[damage type]] in ''[[NetHack]]'' that ~~can drain~~ [[energy]] from the [[hero]], and uses the flag '''<tt>AD_DREN</tt>'''. The only monster with the energy drain damage type is the [[energy vortex]], which uses it as part of its second [[engulfing]] attack to drain energy from an already-engulfed hero.	+	'''Energy drain''' is a [[damage type]] in ''[[NetHack]]'' that drains [[energy]] from the [[hero]] in lieu of dealing actual damage to their [[HP]], and uses the flag '''<tt>AD_DREN</tt>'''. The only monster with the energy drain damage type is the [[energy vortex]], which uses it as part of its second [[engulfing]] attack to drain energy from an already-engulfed hero.

	This is one of only three sources of energy loss in ''NetHack'', along with cursed [[potion of gain energy]] and the [[anti-magic field]].		This is one of only three sources of energy loss in ''NetHack'', along with cursed [[potion of gain energy]] and the [[anti-magic field]].

@@ Line 4: / Line 4: @@
 ==Description==
-If a hero is engulfed by an energy vortex, they have a {{frac|3|4}} chance of losing an amount of energy dependent on their [[experience level]]:{{refsrc|src/mhitu.c|300|nethack=3.6.7}}{{refsrc|src/mhitu.c|1998|nethack=3.6.7}} the base damage dice used is 2d6, with adjustments made depending on their current and maximum energy&mdash;the outcomes can range from 1d3 points of energy drain for heroes with very low energy, up to 3d9 for heroes with very high energy. If a hero is hit by the energy vortex's energy-draining attack during the grace period where they cannot be re-engulfed, there is a {{frac|4}} chain of the hero's energy being drained on hit, with the same rules applied.{{refsrc|src/mhitu.c|1572|nethack=3.6.7}}
+If a hero is engulfed by an energy vortex, they have a {{frac|3|4}} chance of losing an amount of energy dependent on their [[experience level]]:{{refsrc|src/mhitu.c|300|nethack=3.6.7}}{{refsrc|src/mhitu.c|1998|nethack=3.6.7}} the base damage dice used is 2d6, with adjustments made depending on their current and maximum energy&mdash;the outcomes can range from 1d3 points of energy drain for heroes with very low energy, up to 3d9 for heroes with very high energy. If a hero is hit by the energy vortex's energy-draining attack during the grace period where they cannot be re-engulfed, the engulfing attack is converted to a claw attack which has a {{frac|4}} chance of the hero's energy being drained on hit, with the same rules applied.{{refsrc|src/mhitu.c|1572|nethack=3.6.7}}{{refsrc|src/mhitu.c|319|nethack=3.6.7}}
 [[AC]] and [[magic cancellation]] can block the latter instance of the attack, but not the former. [[Canceling]] the energy vortex can nullify its energy-draining ability.

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 ===UnNetHack===
 In [[UnNetHack]], [[Weeping angel (UnNetHack)|weeping angels]] and [[weeping archangel]]s have energy-draining claw attacks.
 ===dNetHack===

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 ==Strategy==
 Energy drain is a rare ability and one of a few features of energy vortices that make them annoying and potentially harrowing to face.
 ==History==
@@ Line 18: / Line 20: @@
 ==Variants==
-Variants of ''NetHack'' may introduce other monsters that have energy-draining attacks, some of which occur prior to the damage type's introduction to ''NetHack''
+Variants of ''NetHack'' may introduce other monsters that have energy-draining attacks, some of which occur prior to the damage type's introduction to ''NetHack''.
 ===SLASH'EM===