Mysterious force - Revision history

Umbire the Phantom: follow-up

2024-11-20T22:50:45Z

follow-up

Bhaak: /* History */ adding reference for Izchak as designer of the mysterious force

2024-11-20T22:07:46Z

‎History: adding reference for Izchak as designer of the mysterious force

Netzhack: /* History */ Tense, word order

2022-09-15T15:19:19Z

‎History: Tense, word order

Umbire the Phantom at 09:49, 25 June 2022

2022-06-25T09:49:08Z

Bubble3: GruntHack has also removed the mysterious force and made carrying the Amulet block all teleportation - see https://github.com/k21971/GruntHack/commit/963cacea2bcbae94eb06d92ee1b739b6f16f1e73

2022-06-17T05:56:59Z

GruntHack has also removed the mysterious force and made carrying the Amulet block all teleportation - see https://github.com/k21971/GruntHack/commit/963cacea2bcbae94eb06d92ee1b739b6f16f1e73

Godel9: Bottom four levels, not three levels

2022-05-30T04:41:45Z

Bottom four levels, not three levels

Godel9: Mysterious force does not affect the bottom three levels of Gehennom (see goto_level in do.c)

2022-05-30T02:07:12Z

Mysterious force does not affect the bottom three levels of Gehennom (see goto_level in do.c)

Godel9: Changed table to take into account that the mysterious force does not affect the bottom three levels of Gehennom (see goto_level in do.c)

2022-05-30T02:04:34Z

Changed table to take into account that the mysterious force does not affect the bottom three levels of Gehennom (see goto_level in do.c)

Phollenback: /* Strategy */ typo fix

2021-11-02T04:57:00Z

‎Strategy: typo fix

Umbire the Phantom: /* History */ Finally tracked that down

2021-09-23T19:01:02Z

‎History: Finally tracked that down

@@ Line 49: / Line 49: @@
 ==History==
-The mysterious force first appears in [[NetHack 3.0.0]].{{refsrc|do.c|465|version=NetHack 3.0.0}}
+The mysterious force first appears in [[NetHack 3.0.0]], and was conceived and implemented by the late [[Izchak Miller]].{{refsrc|do.c|465|version=NetHack 3.0.0}}<ref>[https://www.reddit.com/r/nethack/comments/vbdpo9/make_gehennom_great_again/icd7nxr/ Reddit comment by DevTeam member Pat Rankin]</ref>
-Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. The comments in later versions of NetHack have been changed to describe the formula correctly.
+Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. The comments in later versions of ''NetHack'' have been changed to describe the formula correctly.
 ==Messages==

← Older revision		Revision as of 22:07, 20 November 2024
Line 52:		Line 52:

	Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. The comments in later versions of NetHack have been changed to describe the formula correctly.		Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. The comments in later versions of NetHack have been changed to describe the formula correctly.
		+
		+	The mysterious force was conceived and implemented by the [[Izchak Miller]].
		+	<ref>[https://www.reddit.com/r/nethack/comments/vbdpo9/make_gehennom_great_again/icd7nxr/ Reddit comment by DevTeam member Pat Rankin]</ref>

	==Messages==		==Messages==

@@ Line 51: / Line 51: @@
 The mysterious force first appears in [[NetHack 3.0.0]].{{refsrc|do.c|465|version=NetHack 3.0.0}}
-Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. Later versions of NetHack would change the comments to describe the formula correctly.
+Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. The comments in later versions of NetHack have been changed to describe the formula correctly.
 ==Messages==

@@ Line 64: / Line 64: @@
 ==References==
 <references/>
-{{nethack-361}}
+{{nethack-366}}
 [[Category:Strategy]]

@@ Line 58: / Line 58: @@
 ==Variants==
-[[SLASH'EM]], [[SporkHack]], [[UnNetHack]], [[xNetHack]], [[EvilHack]] and [[SpliceHack]] have completely removed the mysterious force. UnNetHack, xNetHack, EvilHack, and SpliceHack compensate for this by making carrying the Amulet block all teleportation, including intra-level.
+[[SLASH'EM]], [[SporkHack]], [[UnNetHack]], [[xNetHack]], [[EvilHack]], [[SpliceHack]], and [[GruntHack]] have completely removed the mysterious force. UnNetHack, xNetHack, EvilHack, SpliceHack, and GruntHack compensate for this by making carrying the Amulet block all teleportation, including intra-level.
 UnNetHack and EvilHack also include an effect that can make the Amulet of Yendor teleport itself to a random location on the current level whenever it is dropped for any reason. The odds of it teleporting away depends on its BUC status.

@@ Line 9: / Line 9: @@
 ==Description==
-When trying to climb up [[stairs]] or [[quaff]]ing a [[cursed]] [[potion of gain level]] in Gehennom with the Amulet of Yendor in your possession, the mysterious force will activate {{frac|4}} of the time and impede your progress.{{refsrc|do.c|979}} The mysterious force does not act when you go up from the bottom three levels of Gehennom, when you go up from the [[Valley of the Dead]] to the [[Castle]], or when you enter [[Vlad's tower]] using the staircase. If you are inside the [[Wizard's Tower]], it will leave you on the same level if it would otherwise place you below the bottom of the tower.
+When trying to climb up [[stairs]] or [[quaff]]ing a [[cursed]] [[potion of gain level]] in Gehennom with the Amulet of Yendor in your possession, the mysterious force will activate {{frac|4}} of the time and impede your progress.{{refsrc|do.c|979}} The mysterious force does not act when you go up from any of the four bottom levels of Gehennom, when you go up from the [[Valley of the Dead]] to the [[Castle]], or when you enter [[Vlad's tower]] using the staircase. If you are inside the [[Wizard's Tower]], it will leave you on the same level if it would otherwise place you below the bottom of the tower.
 The mysterious force will often push you back by at least one floor; it can also teleport you around the same level as a kind of "zero level drop". You may also be sent back more than one floor depending on your [[alignment]]: [[Lawful]] characters are dumped up to three levels below their current location, while [[neutral]] players are dropped up to two floors below, and [[chaotic]] characters are the most fortunate, with a maximum of one level down.

@@ Line 38: / Line 38: @@
 ===Probabilities===
 {{upcoming|NetHack 3.7.0|The force has been changed to hit you less often proportional to the total number of levels you have been sent back already. Most of the calculations on this page will be invalidated.}}
-The following values are for a typical 22-level [[Gehennom]]. On average, Lawfuls take around 30% longer than Chaotics, and Neutrals take around 14% longer. Before the corrected probabilities were discovered, players used to believe that Lawfuls had a much harsher penalty when escaping Gehennom.
+The following values are for a typical 22-level [[Gehennom]]. On average, Lawfuls take around 27% longer than Chaotics, and Neutrals take around 13% longer. Before the corrected probabilities were discovered, players used to believe that Lawfuls had a much harsher penalty when escaping Gehennom.
 {|class="prettytable"
 !             !! Lawful !! Neutral !! Chaotic
 |-
-| Average staircase climbs (approx) || 45.2 || 39.8  || 34.9
+| Average staircase climbs (approx) || 41.4 || 36.8  || 32.7
 |-
-| Climbs for 90% chance of escape  || 63  || 53   || 43
+| Climbs for 90% chance of escape  || 58  || 49   || 41
 |}

@@ Line 34: / Line 34: @@
 Since [[Gehennom]] also contains many [[non-teleport level]]s, the player is advised to save a few cursed potions of gain level to bypass especially convoluted levels, such as [[Asmodeus' Lair]]. The annoyance that the mysterious force causes is enough for some to bring along or [[wish]] for a [[helm of opposite alignment]] in order to temporarily convert to chaotic alignment and avoid the worst of it, especially during [[speed ascension]]s using [[Dwarf (starting race)|dwarven]] [[Valkyrie]]s.
-There os an advanced strategy to bypass a few levels in the lower sections of Gehennom by taking the portal to the [[Wizard's Tower]], which typically moves you a few levels upwards (note that the force is less harsh inside the Tower). The strategy involves [[stoning]] the Wizard of Yendor when you first encounter him to obtain the [[Book of the Dead]], which as a [[unique item]] will not be trapped within his statue - you then return to the Tower during the run to the surface, [[stone to flesh|unstone]] him and toss him the Amulet. You can then escape the level via levelporting and meet the Wizard on the upstairs, and he should teleport to you with the Amulet.
+There is an advanced strategy to bypass a few levels in the lower sections of Gehennom by taking the portal to the [[Wizard's Tower]], which typically moves you a few levels upwards (note that the force is less harsh inside the Tower). The strategy involves [[stoning]] the Wizard of Yendor when you first encounter him to obtain the [[Book of the Dead]], which as a [[unique item]] will not be trapped within his statue - you then return to the Tower during the run to the surface, [[stone to flesh|unstone]] him and toss him the Amulet. You can then escape the level via levelporting and meet the Wizard on the upstairs, and he should teleport to you with the Amulet.
 ===Probabilities===

← Older revision		Revision as of 19:01, 23 September 2021
Line 49:		Line 49:

	==History==		==History==
		+	The mysterious force first appears in [[NetHack 3.0.0]].{{refsrc\|do.c\|465\|version=NetHack 3.0.0}}
		+
	Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. Later versions of NetHack would change the comments to describe the formula correctly.		Despite a code comment in [[NetHack 3.4.3]] implying that the probabilities of each distance other than -1 are equal, this is not actually the case - the code actually randomizes the distance to move a player twice, leading to the above distribution in the first table. Later versions of NetHack would change the comments to describe the formula correctly.