Speed - Revision history

Watchdog: remove extraneous words

2026-06-02T14:38:42Z

remove extraneous words

Tomsod: /* Monster speed */ apparent wrong math

2025-10-24T07:26:45Z

‎Monster speed: apparent wrong math

Umbire the Phantom: /* Player speed */ ugh

2025-07-31T14:52:50Z

‎Player speed: ugh

Umbire the Phantom: there really wasn't anything to fix...

2025-07-31T14:52:38Z

there really wasn't anything to fix...

Nethacker: /* Player speed */ fixed the information

2025-07-31T14:37:54Z

‎Player speed: fixed the information

Umbire the Phantom: highly appreciate restoring lost info

2025-07-27T07:22:08Z

highly appreciate restoring lost info

Ais523: mention slowing attacks

2025-07-27T07:19:17Z

mention slowing attacks

Umbire the Phantom: /* Player speed */ word choice

2025-07-27T07:11:30Z

‎Player speed: word choice

Umbire the Phantom: /* Player speed */ typo

2025-07-27T07:11:11Z

‎Player speed: typo

Umbire the Phantom: finish fine-tuning the "clarifications"

2025-07-27T07:10:55Z

finish fine-tuning the "clarifications"

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 {{tocright}}
-'''Speed''', referred to internally as '''movement rate''', is a form of mechanic in ''[[NetHack]]'' that governs how often the [[hero]] and [[monster]]s move relative to each other during a given game [[turn]].
+'''Speed''', referred to internally as '''movement rate''', is a mechanic in ''[[NetHack]]'' that governs how often the [[hero]] and [[monster]]s move relative to each other during a given game [[turn]].
 ==Description==

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 * A '''slow''' monster has their movement rate lowered to (2 * speed + 1) / 3, e.g. a [[mountain centaur]] that is slowed moves at 13 speed (2 * 20 + 1 = 40 + 1, {{frac|41|3}} with integer rounding is 13). The absolute minimum movement rate of any abnormally-slowed monster is 1.
-* A '''fast''' monster has their movement rate raised to (4 * speed + 2) / 3, e.g. a mountain centaur that is fast moves at 27 speed (4 * 20 + 1 = 80 + 1, {{frac|81|3}} is 27).
+* A '''fast''' monster has their movement rate raised to (4 * speed + 2) / 3, e.g. a mountain centaur that is fast moves at 27 speed (4 * 20 + 2 = 82, {{frac|82|3}} rounds down to 27).
 In normal combat, no monster is intended to be able to use their full set of attacks on another monster more than once per turn, regardless of its speed.{{refsrc|src/monmove.c|601|nethack=3.6.7}}{{refsrc|src/monmove.c|768|nethack=3.6.7}}{{refsrc|src/uhitm.c|433|nethack=3.6.7}} Pets are given a special exception, since their movement always sets the "after" parameter (which determines whether the monster has already attacked that turn) to 0 after each of their moves:{{refsrc|src/dogmove.c|1021|nethack=3.6.7}} this means that pets with more than 12 speed can attack monsters more often.

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 ** Any hero can obtain intrinsic speed by zapping themselves with a [[wand of speed monster]].
 * '''Very fast''' speed can be obtained by wearing [[speed boots]], and can also be gained temporarily by quaffing the [[potion of speed]] or casting the {{+ of|haste self}} spell. It grants a free move (or 12 extra movement points) on {{frac|2|3}} of the hero's turns, for an average of 5 moves every 3 turns (or an average of 20 movement points per turn).{{refsrc|src/allmain.c|137|nethack=3.6.7}}{{refsrc|include/youprop.h|352-L355|nethack=3.6.7|comment=The <code>INTRINSIC</code> bitfield macro refers to permanent intrinsics; the complement of that bitfield contains a timeout for temporary intrinsics.}}
-* A hero can be lost intrinsic speed if they are subjected to delayed [[stoning]], are hit by a [[slowing attack]], or else zap themselves with the [[wand of slow monster]] or the {{+ of|slow monster}} spell.
+* A hero can lose intrinsic speed if they are subjected to delayed [[stoning]], are hit by a [[slowing attack]], or else zap themselves with the [[wand of slow monster]] or the {{+ of|slow monster}} spell.
 * [[Eating]] a [[quantum mechanic]] [[corpse]] or [[tin]] ''toggles'' intrinsic speed&mdash;A hero that does not have the property will gain it from eating quantum mechanic meat, while a hero that has the property will lose it by doing so.

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 A hero's speed is either normal, fast or very fast depending on the following factors:
 * '''Fast''' speed is obtained from the permanent "speed" intrinsic. It grants a free move (or 12 extra movement points) on {{frac|3}} of the hero's turns, for an average of 4 moves every 3 turns (or an average of 16 movement points per turn).{{refsrc|src/allmain.c|141|nethack=3.6.7}}
 ** [[Archeologist]]s, [[Monk]]s and [[Samurai]] start with intrinsic speed, while [[Barbarian]]s, [[Cavepeople]], [[Knight]]s, and [[Valkyrie]]s gain it at [[experience level]] 7.
 ** Any hero can obtain intrinsic speed by zapping themselves with a [[wand of speed monster]].
-** A hero can lose intrinsic speed if they are subjected to delayed [[stoning]], are hit by a [[slowing attack]], or else zap themselves with the [[wand of slow monster]] or the {{+ of|slow monster}} spell.
+* '''Very fast''' speed can be obtained by wearing [[speed boots]], and can also be gained temporarily by quaffing the [[potion of speed]] or casting the {{+ of|haste self}} spell. It grants a free move (or 12 extra movement points) on {{frac|2|3}} of the hero's turns, for an average of 5 moves every 3 turns (or an average of 20 movement points per turn).{{refsrc|src/allmain.c|137|nethack=3.6.7}}{{refsrc|include/youprop.h|352-L355|nethack=3.6.7|comment=The <code>INTRINSIC</code> bitfield macro refers to permanent intrinsics; the complement of that bitfield contains a timeout for temporary intrinsics.}}
-** [[Eating]] a [[quantum mechanic]] [[corpse]] or [[tin]] ''toggles'' intrinsic speed&mdash;A hero that does not have the property will gain it from eating quantum mechanic meat, while a hero that has the property will lose it by doing so.
+* A hero can be lost intrinsic speed if they are subjected to delayed [[stoning]], are hit by a [[slowing attack]], or else zap themselves with the [[wand of slow monster]] or the {{+ of|slow monster}} spell.
 * [[Eating]] a [[quantum mechanic]] [[corpse]] or [[tin]] ''toggles'' intrinsic speed&mdash;A hero that does not have the property will gain it from eating quantum mechanic meat, while a hero that has the property will lose it by doing so.
 Encumbrance beyond the hero's [[carrying capacity]] can lower their effective movement rate, which is the only way a hero can be slowed below their base speed. The hero's speed after adjustments for intrinsic or extrinsic speed and encumbrance are listed in the table below:{{refsrc|src/allmain.c|148|nethack=3.6.7}}

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 A hero's speed is either normal, fast or very fast depending on the following factors:
 * '''Fast''' speed is obtained from the permanent "speed" intrinsic. It grants a free move (or 12 extra movement points) on {{frac|3}} of the hero's turns, for an average of 4 moves every 3 turns (or an average of 16 movement points per turn).{{refsrc|src/allmain.c|141|nethack=3.6.7}}
 ** [[Archeologist]]s, [[Monk]]s and [[Samurai]] start with intrinsic speed, while [[Barbarian]]s, [[Cavepeople]], [[Knight]]s, and [[Valkyrie]]s gain it at [[experience level]] 7.
 ** Any hero can obtain intrinsic speed by zapping themselves with a [[wand of speed monster]].
-* '''Very fast''' speed can be obtained by wearing [[speed boots]], and can also be gained temporarily by quaffing the [[potion of speed]] or casting the {{+ of|haste self}} spell. It grants a free move (or 12 extra movement points) on {{frac|2|3}} of the hero's turns, for an average of 5 moves every 3 turns (or an average of 20 movement points per turn).{{refsrc|src/allmain.c|137|nethack=3.6.7}}{{refsrc|include/youprop.h|352-L355|nethack=3.6.7|comment=The <code>INTRINSIC</code> bitfield macro refers to permanent intrinsics; the complement of that bitfield contains a timeout for temporary intrinsics.}}
+** A hero can lose intrinsic speed if they are subjected to delayed [[stoning]], are hit by a [[slowing attack]], or else zap themselves with the [[wand of slow monster]] or the {{+ of|slow monster}} spell.
-* A hero can be slowed to normal speed if they are subjected to delayed [[stoning]], are hit by a [[slowing attack]], or else zap themselves with the [[wand of slow monster]] or the {{+ of|slow monster}} spell.
+** [[Eating]] a [[quantum mechanic]] [[corpse]] or [[tin]] ''toggles'' intrinsic speed&mdash;A hero that does not have the property will gain it from eating quantum mechanic meat, while a hero that has the property will lose it by doing so.
 * [[Eating]] a [[quantum mechanic]] [[corpse]] or [[tin]] ''toggles'' intrinsic speed&mdash;A hero that does not have the property will gain it from eating quantum mechanic meat, while a hero that has the property will lose it by doing so.
 Encumbrance beyond the hero's [[carrying capacity]] can lower their effective movement rate, which is the only way a hero can be slowed below their base speed. The hero's speed after adjustments for intrinsic or extrinsic speed and encumbrance are listed in the table below:{{refsrc|src/allmain.c|148|nethack=3.6.7}}

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 ==Player speed==
-A hero's speed depends on three things:
+* '''Fast''' speed is obtained from the permanent "speed" intrinsic. It grants a free move (or 12 extra movement points) on {{frac|3}} of the hero's turns, for an average of 4 moves every 3 turns (or an average of 16 movement points per turn).{{refsrc|src/allmain.c|141|nethack=3.6.7}}
-* Permanent [[Property#Intrinsic_properties|intrinsic]] speed. [[Archeologist]]s, [[Monk]]s, and [[Samurai]]s start with this intrinsic, while [[Barbarian]]s, [[Caveman]]s, [[Knight]]s, and [[Valkyrie]]s gain it at [[experience level]] 7. The intrinsic can also be obtained by zapping oneself with [[wand of speed monster]]. It is lost by zapping oneself with [[wand of slow monster]] or casting {{spell of|slow monster}} on oneself. It is also lost by [[Stoning#Delayed stoning|delayed stoning]] from [[cockatrice]] or [[chickatrice]] attack. Eating a [[quantum mechanic]] [[corpse]] or [[tin]] ''toggles'' intrinsic speed.
+Encumbrance beyond the hero's [[carrying capacity]] can lower their effective movement rate, which is the only way a hero can be slowed below their base speed. The hero's speed after adjustments for intrinsic or extrinsic speed and encumbrance are listed in the table below:{{refsrc|src/allmain.c|148|nethack=3.6.7}}
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