Energy - Revision history

Umbire the Phantom: /* Level gain and starting energy */ spacing

2026-01-13T11:04:43Z

‎Level gain and starting energy: spacing

Umbire the Phantom: /* SLASH'EM */ some copyedit, detail

2025-07-04T02:36:26Z

‎SLASH'EM: some copyedit, detail

Ais523: /* Specific methods */ fix one piece of advice that only applies to 3.4.3 and earlier (but I haven't checked the rest of the page for other 3.4.3isms)

2023-12-02T03:24:47Z

‎Specific methods: fix one piece of advice that only applies to 3.4.3 and earlier (but I haven't checked the rest of the page for other 3.4.3isms)

Kufat: /* Energy regeneration */ HoB mandatory for 1d4 energy regen

2023-02-15T03:20:53Z

‎Energy regeneration: HoB mandatory for 1d4 energy regen

Actual-nh: Grammar/style

2021-04-08T02:14:13Z

Grammar/style

Phollenback: Add all the energy changes for FIQHack

2021-04-07T19:06:14Z

Add all the energy changes for FIQHack

Actual-nh: /* Uses of energy */ Grammar/style

2021-03-02T04:38:48Z

‎Uses of energy: Grammar/style

Schneelocke: /* Uses of energy */ tpyo

2019-08-26T19:50:41Z

‎Uses of energy: tpyo

Tomsod: /* Level gain */ starting energy

2018-11-30T18:47:42Z

‎Level gain: starting energy

Mdaemate: cursed scroll of charging while confused

2018-10-29T16:03:36Z

cursed scroll of charging while confused

@@ Line 108: / Line 108: @@
 |}
-=== Level gain and starting energy ===
+===Level gain and starting energy===
 When you gain a level, both your current and maximum energy are increased based on various factors:{{refsrc|exper.c|195}}

@@ Line 180: / Line 180: @@
 ===SLASH'EM===
-Self-teleport costs 30 points of power.<ref>{{sourcecode|SLASH'EM_0.0.7E7F2/teleport.c|790}}</ref>
+Self-teleport costs 30 points of power.{{refsrc|teleport.c|790|version=SLASH'EM 0.0.7E7F2}}
 The energy regeration frequency formula is changed to <math>\lfloor (45 - \mathit{level}) \times 3 / 6 \rfloor</math> turns if you are a [[Wizard]], and every <math>\lfloor (45 - \mathit{level}) \times 4 / 6 \rfloor</math> for all other roles.
 === FIQHack ===

@@ Line 31: / Line 31: @@
 Lying with a [[foocubus]] may increase or decrease your energy.
-The [[polyself bug]] can be exploited to increase your maximum energy exponentially.
+In older versions of NetHack, the [[polyself bug]] could be exploited to increase your maximum energy exponentially. However, this bug was fixed in [[NetHack 3.6.0]] and thus is no longer usable.
 === Energy regeneration ===

@@ Line 38: / Line 38: @@
 Your energy normally regenerates every <math>\lfloor (38 - \mathit{level}) \times 3 / 6 \rfloor</math> turns if you are a [[Wizard]], and every <math>\lfloor (38 - \mathit{level}) \times 4 / 6 \rfloor</math> turns for other roles.{{refsrc|allmain.c|211}}  If you carry [[the Eye of the Aethiopica]], you regenerate energy every turn regardless of role.
-The amount of energy regenerated each time is between 1 and <math>\lfloor (\mathit{Wis} + \mathit{Int}) / 15 \rfloor + 1</math>, which for most characters means ''1d2'' or ''1d3''.
+The amount of energy regenerated each time is between 1 and <math>\lfloor (\mathit{Wis} + \mathit{Int}) / 15 \rfloor + 1</math>, which for most characters means ''1d2'' or ''1d3''. Increasing that to ''1d4'' requires a well-enchanted [[helm of brilliance]] since no playable race has Wisdom and Intelligence caps high enough to reach a total of 45.
 Number of turns between regenerating energy:

@@ Line 189: / Line 189: @@
 * Monsters and players use the same spellcasting system, which means that monsters use energy to cast spells instead of using a cooldown system.  This means they can potentially cast multiple spells in succession if they have enough energy, so high-level spellcasting monsters can do much more damage.
-* Widsom is slightly less important for energy regeneration and experience level is slightly more important.  Intelligence is not considered.
+* Wisdom is slightly less important for energy regeneration and experience level is slightly more important.  Intelligence is not considered.
 * Wizards get a boost of +0.33pw/turn for energy regeneration

@@ Line 8: / Line 8: @@
 The main use of energy is to [[spellcasting|cast spells]].  You need 5 times the spell's level of energy to cast a spell.  When carrying the [[Amulet of Yendor]], there is an additional random cost. This cost applies ''only'' to spellcasting, not to any other expenditure of energy. See [[spellcasting#Spellcasting cost|spellcasting cost]] for more details.
-[[Teleport at will|Teleportation at will]] from [[teleportitis]] requires 20 energy, but only consumes 19 {{refsrc|teleport.c|517}}.  The usual random teleportation from teleportitis does not use energy.
+[[Teleport at will|Teleportation at will]] from [[teleportitis]] requires 20 energy, but only consumes 19.{{refsrc|teleport.c|517}}  The usual random teleportation from teleportitis does not use energy.
-Certain <tt>[[monster (command)|#monster]]</tt> commands require energy. The [[breath weapon]]s of [[dragon]]s, [[iron golem]]s, [[winter wolf|winter wolves]] and [[hell hound]]s all cost 15 energy {{refsrc|polyself.c|748}}. Summoning help as a [[werecreature]] {{refsrc|polyself.c|910}}, and emitting psychic blasts as a [[mind flayer]] {{refsrc|polyself.c|1075}} both cost 10 energy.
+Certain <tt>[[monster (command)|#monster]]</tt> commands require energy. The [[breath weapon]]s of [[dragon]]s, [[iron golem]]s, [[winter wolf|winter wolves]] and [[hell hound]]s all cost 15 energy.{{refsrc|polyself.c|748}} Summoning help as a [[werecreature]]{{refsrc|polyself.c|910}} and emitting psychic blasts as a [[mind flayer]]{{refsrc|polyself.c|1075}} both cost 10 energy.
 == Gaining energy ==

@@ Line 108: / Line 108: @@
 |}
-=== Level gain ===
+=== Level gain and starting energy ===
 When you gain a level, both your current and maximum energy are increased based on various factors:{{refsrc|exper.c|195}}
@@ Line 124: / Line 124: @@
 The final result will be added to both your current and maximum energy.
 {| class="prettytable striped"
@@ Line 131: / Line 133: @@
 ! high-XL<br/>modifier
 ! energy modifier{{reffunc|exper.c|enermod}}
 |-
-| [[Archeologist|Arc]] || 14 || 1 || 1 || 1
+| [[Archeologist|Arc]] || 14 || 1 || 1 || 1 || 1
 |-
-|    [[Barbarian|Bar]] || 10 || 1 || 1 || 3/4
+|    [[Barbarian|Bar]] || 10 || 1 || 1 || 3/4 || 1
 |-
-|      [[Caveman|Cav]] || 10 || 1 || 1 || 1
+|      [[Caveman|Cav]] || 10 || 1 || 1 || 1 || 1
 |-
-|       [[Healer|Hea]] || 20 || 1 || 2 || 3/2
+|       [[Healer|Hea]] || 20 || 1 || 2 || 3/2 || 2-5
 |-
-|       [[Knight|Kni]] || 10 || 1 || 2 || 3/2
+|       [[Knight|Kni]] || 10 || 1 || 2 || 3/2 || 2-5
 |-
-|         [[Monk|Mon]] || 10 || 2 || 2 || 1
+|         [[Monk|Mon]] || 10 || 2 || 2 || 1 || 3-4
 |-
-|       [[Priest|Pri]] || 10 || 2 || 2 || 2
+|       [[Priest|Pri]] || 10 || 2 || 2 || 2 || 5-7
 |-
-|        [[Rogue|Rog]] || 11 || 1 || 1 || 1
+|        [[Rogue|Rog]] || 11 || 1 || 1 || 1 || 1
 |-
-|       [[Ranger|Ran]] || 12 || 1 || 1 || 1
+|       [[Ranger|Ran]] || 12 || 1 || 1 || 1 || 1
 |-
-|      [[Samurai|Sam]] || 11 || 1 || 1 || 1
+|      [[Samurai|Sam]] || 11 || 1 || 1 || 1 || 1
 |-
-|      [[Tourist|Tou]] || 14 || 1 || 1 || 1
+|      [[Tourist|Tou]] || 14 || 1 || 1 || 1 || 1
 |-
-|     [[Valkyrie|Val]] || 10 || 1 || 1 || 3/4
+|     [[Valkyrie|Val]] || 10 || 1 || 1 || 3/4 || 1
 |-
-|       [[Wizard|Wiz]] || 12 || 2 || 3 || 2
+|       [[Wizard|Wiz]] || 12 || 2 || 3 || 2 || 5-7
 |}
 {| class="prettytable"
 ! Race
 ! minimum gain
 |-
-| [[Human (starting race)|Human]] || 2
+| [[Human (starting race)|Human]] || 2 || +1
 |-
-| [[Elf (starting race)|Elf]] || 3
+| [[Elf (starting race)|Elf]] || 3 || +2
 |-
-| [[Dwarf (starting race)|Dwarf]] || 0
+| [[Dwarf (starting race)|Dwarf]] || 0 || no bonus
 |-
-| [[Gnome (starting race)|Gnome]] || 2
+| [[Gnome (starting race)|Gnome]] || 2 || +2
 |-
-| [[Orc (starting race)|Orc]] || 1
+| [[Orc (starting race)|Orc]] || 1 || +1
 |}

@@ Line 21: / Line 21: @@
 <tt>[[invoke|#invoke]]</tt> [[the Mitre of Holiness]] to regain half the energy you need to reach the maximum, but no more than 120 points.
-Reading any [[scroll of charging]] while [[confused]] recharges your energy to its maximum.  If it was already maximum, you gain 5d4 total energy instead.{{refsrc|read.c|1056}}
+Reading any [[scroll of charging]] while [[confused]] recharges your energy to its maximum.  If it was already maximum, you gain 5d4 total energy instead.{{refsrc|read.c|1056}} In 3.6.0 or later cursed scroll will reduce energy to 0 without altering the maximum “''You feel discharged.''”
 Eating a [[newt]] corpse sometimes increases energy by 1 to 3 points.  If this would put you over the maximum, your maximum energy might also increase by 1.