Portal detection methods - Revision history

Aximili: merge suggestion

2022-08-22T02:44:27Z

merge suggestion

Aximili: Fix references

2021-05-26T05:07:47Z

Fix references

Thidwick: BUC matters, no?

2020-10-30T06:00:03Z

BUC matters, no?

Netzhack: Chance of = probability; chance to = opportunity

2017-08-27T12:26:23Z

Chance of = probability; chance to = opportunity

Paxed: Text replace - "\[\[[sS]pellbook of (dig|magic missile|fireball|cone of cold|sleep|finger of death|light|detect monsters|healing|knock|force bolt|confuse monster|cure blindness|drain life|slow monster|wizard lock|create monster|detect food|cause fear|clai

2012-11-25T16:56:01Z

Tjr: Text replace - " \[\[[Ss]ource:([a-zA-Z][a-zA-Z]\.c)#[Ll]ine([0-9][0-9])\]\] <\/ref>" to "{{refsrc|$1|$2}}"

2012-09-10T15:30:31Z

Text replace - "<ref> *\[\[[Ss]ource:([a-zA-Z][a-zA-Z]*\.c)#[Ll]ine([0-9][0-9]*)\]\] *<\/ref>" to "{{refsrc|$1|$2}}"

Qazmlpok: Minor additions

2011-02-21T20:01:40Z

Minor additions

Scorchgeek: typos

2011-02-21T19:11:20Z

typos

Scorchgeek: cleaned up, crystal ball isn't quite that dangerous, Bell of Opening detects portal

2011-02-21T19:09:46Z

cleaned up, crystal ball isn't quite *that* dangerous, Bell of Opening detects portal

Tjr: the AoY is unreliable. Add exact numbers.

2010-11-28T21:26:49Z

the AoY is unreliable. Add exact numbers.

← Older revision		Revision as of 02:44, 22 August 2022
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		+	{{merge\|[[Trap#Detection]]}}
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	There are several ways to detect [[portal]]s. Portals count as a [[trap]] and can be found any way that a trap could be. This is most important on the [[Elemental Planes]], where finding the portals quickly is important. The usual methods are:		There are several ways to detect [[portal]]s. Portals count as a [[trap]] and can be found any way that a trap could be. This is most important on the [[Elemental Planes]], where finding the portals quickly is important. The usual methods are:

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 * Read a blessed or uncursed [[scroll of gold detection]] while [[confused]]. This will find and display all traps on the screen as if you had seen them.
 * Read a cursed [[scroll of gold detection]]. This will show a pile of [[gold]] at every trap location. It should also be noted that the gold will disappear when you come within line-of-sight of it, making it fine on the [[Plane of Earth]] and [[Plane of Air]] if you can memorize the location it was at, but not terribly useful on the [[Plane of Water]], where the portal moves, nor on the [[Plane of Fire]], where there are many fire traps and moving light sources (you'll see gold on the traps and on the portal until the gold becomes visible).
-* Use a [[crystal ball]] and choose to search for [[^]]. Note that this will leave you immobile for d10 turns, which can be dangerous if you're low on HP or are being attacked, and has a chance of failing if your intelligence is less than 20.{{refsrc|Detect.c|864}} Because of the paralyzing effect, it's not a preferred method to detect the portals on the Planes, but it's workable if you have no scrolls of gold detection or are going for the [[illiterate]] conduct. (Getting engulfed by a [[vortex]] before attempting to use a crystal ball on the Plane of Air or Plane of Fire is a wise move--if you're engulfed by an air elemental while helpless, you may lose a lot of HP.)
+* Use a [[crystal ball]] and choose to search for [[^]]. Note that this will leave you immobile for d10 turns, which can be dangerous if you're low on HP or are being attacked, and has a chance of failing if your intelligence is less than 20.{{refsrc|src/detect.c|864|version=NetHack 3.4.3}} Because of the paralyzing effect, it's not a preferred method to detect the portals on the Planes, but it's workable if you have no scrolls of gold detection or are going for the [[illiterate]] conduct. (Getting engulfed by a [[vortex]] before attempting to use a crystal ball on the Plane of Air or Plane of Fire is a wise move--if you're engulfed by an air elemental while helpless, you may lose a lot of HP.)
 * Zap a [[wand of secret door detection]] or the {{spell of|detect unseen}} spell, which will detect the portal (and all other hidden traps and doors) if it is within radius of 8.
 * Apply a charged [[Bell of Opening]] -- this will work the same way as the wand of secret door detection.
-* Wield or wear the [[Amulet of Yendor]] -- this works only on the Planes, and only detects portals, not traps. There is a 1/15 chance each turn that you will get messages ("The Amulet of Yendor feels warm.") if within 12 squares of the portal.{{refsrc|Wizard.c|65}} See the [[Amulet of Yendor]] article for more details.
+* Wield or wear the [[Amulet of Yendor]] -- this works only on the Planes, and only detects portals, not traps. There is a 1/15 chance each turn that you will get messages ("The Amulet of Yendor feels warm.") if within 12 squares of the portal.{{refsrc|src/wizard.c|65|version=NetHack 3.4.3}} See the [[Amulet of Yendor]] article for more details.
 ==References==

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 There are several ways to detect [[portal]]s.  Portals count as a [[trap]] and can be found any way that a trap could be.  This is most important on the [[Elemental Planes]], where finding the portals quickly is important.  The usual methods are:
-* Read a [[scroll of gold detection]] while [[confused]]. This will find and display all traps on the screen as if you had seen them.
+* Read a blessed or uncursed [[scroll of gold detection]] while [[confused]]. This will find and display all traps on the screen as if you had seen them.
 * Read a cursed [[scroll of gold detection]]. This will show a pile of [[gold]] at every trap location. It should also be noted that the gold will disappear when you come within line-of-sight of it, making it fine on the [[Plane of Earth]] and [[Plane of Air]] if you can memorize the location it was at, but not terribly useful on the [[Plane of Water]], where the portal moves, nor on the [[Plane of Fire]], where there are many fire traps and moving light sources (you'll see gold on the traps and on the portal until the gold becomes visible).
 * Use a [[crystal ball]] and choose to search for [[^]]. Note that this will leave you immobile for d10 turns, which can be dangerous if you're low on HP or are being attacked, and has a chance of failing if your intelligence is less than 20.{{refsrc|Detect.c|864}} Because of the paralyzing effect, it's not a preferred method to detect the portals on the Planes, but it's workable if you have no scrolls of gold detection or are going for the [[illiterate]] conduct. (Getting engulfed by a [[vortex]] before attempting to use a crystal ball on the Plane of Air or Plane of Fire is a wise move--if you're engulfed by an air elemental while helpless, you may lose a lot of HP.)

@@ Line 3: / Line 3: @@
 * Read a [[scroll of gold detection]] while [[confused]]. This will find and display all traps on the screen as if you had seen them.
 * Read a cursed [[scroll of gold detection]]. This will show a pile of [[gold]] at every trap location. It should also be noted that the gold will disappear when you come within line-of-sight of it, making it fine on the [[Plane of Earth]] and [[Plane of Air]] if you can memorize the location it was at, but not terribly useful on the [[Plane of Water]], where the portal moves, nor on the [[Plane of Fire]], where there are many fire traps and moving light sources (you'll see gold on the traps and on the portal until the gold becomes visible).
-* Use a [[crystal ball]] and choose to search for [[^]]. Note that this will leave you immobile for d10 turns, which can be dangerous if you're low on HP or are being attacked, and has a chance to fail if your intelligence is less than 20.{{refsrc|Detect.c|864}} Because of the paralyzing effect, it's not a preferred method to detect the portals on the Planes, but it's workable if you have no scrolls of gold detection or are going for the [[illiterate]] conduct. (Getting engulfed by a [[vortex]] before attempting to use a crystal ball on the Plane of Air or Plane of Fire is a wise move--if you're engulfed by an air elemental while helpless, you may lose a lot of HP.)
+* Use a [[crystal ball]] and choose to search for [[^]]. Note that this will leave you immobile for d10 turns, which can be dangerous if you're low on HP or are being attacked, and has a chance of failing if your intelligence is less than 20.{{refsrc|Detect.c|864}} Because of the paralyzing effect, it's not a preferred method to detect the portals on the Planes, but it's workable if you have no scrolls of gold detection or are going for the [[illiterate]] conduct. (Getting engulfed by a [[vortex]] before attempting to use a crystal ball on the Plane of Air or Plane of Fire is a wise move--if you're engulfed by an air elemental while helpless, you may lose a lot of HP.)
 * Zap a [[wand of secret door detection]] or the {{spell of|detect unseen}} spell, which will detect the portal (and all other hidden traps and doors) if it is within radius of 8.
 * Apply a charged [[Bell of Opening]] -- this will work the same way as the wand of secret door detection.

@@ Line 4: / Line 4: @@
 * Read a cursed [[scroll of gold detection]]. This will show a pile of [[gold]] at every trap location. It should also be noted that the gold will disappear when you come within line-of-sight of it, making it fine on the [[Plane of Earth]] and [[Plane of Air]] if you can memorize the location it was at, but not terribly useful on the [[Plane of Water]], where the portal moves, nor on the [[Plane of Fire]], where there are many fire traps and moving light sources (you'll see gold on the traps and on the portal until the gold becomes visible).
 * Use a [[crystal ball]] and choose to search for [[^]]. Note that this will leave you immobile for d10 turns, which can be dangerous if you're low on HP or are being attacked, and has a chance to fail if your intelligence is less than 20.{{refsrc|Detect.c|864}} Because of the paralyzing effect, it's not a preferred method to detect the portals on the Planes, but it's workable if you have no scrolls of gold detection or are going for the [[illiterate]] conduct. (Getting engulfed by a [[vortex]] before attempting to use a crystal ball on the Plane of Air or Plane of Fire is a wise move--if you're engulfed by an air elemental while helpless, you may lose a lot of HP.)
-* Zap a [[wand of secret door detection]] or the [[spellbook of detect unseen|detect unseen]] spell, which will detect the portal (and all other hidden traps and doors) if it is within radius of 8.
+* Zap a [[wand of secret door detection]] or the {{spell of|detect unseen}} spell, which will detect the portal (and all other hidden traps and doors) if it is within radius of 8.
 * Apply a charged [[Bell of Opening]] -- this will work the same way as the wand of secret door detection.
 * Wield or wear the [[Amulet of Yendor]] -- this works only on the Planes, and only detects portals, not traps. There is a 1/15 chance each turn that you will get messages ("The Amulet of Yendor feels warm.") if within 12 squares of the portal.{{refsrc|Wizard.c|65}} See the [[Amulet of Yendor]] article for more details.

@@ Line 1: / Line 1: @@
-There are several ways to detect [[portal]]s in [[Nethack]].  Portals count as a [[trap]] and can be found any way that a trap could be.  This is most important on the [[Elemental Planes|Elemental]]s, where [[Speed ascension|speed]] is key.  The usual methods are:
+There are several ways to detect [[portal]]s.  Portals count as a [[trap]] and can be found any way that a trap could be.  This is most important on the [[Elemental Planes]]s, where finding the portals quickly is important.  The usual methods are:
-* Read a scroll of gold detection while [[confused]].
+* Read a [[Scroll of gold detection]] while [[confused]]. This will find and display all traps on the screen as if you had seen them.
-* Read a cursed [[scroll of gold detection]]. This will show a pile of [[gold]] at every trap location.   This is not so useful on the [[Plane of Fire]], where there are many fire traps.
+* Read a cursed [[scroll of gold detection]]. This will show a pile of [[gold]] at every trap location. This is not so useful on the [[Plane of Fire]], where there are many fire traps (you'll see gold on the traps and on the portal). It should also be noted that the gold will disappear when you come within line-of-sight of it, making it fine on the [[Plane of Earth]] and [[Plane of Air]] if you can memorize the location it was at, but not terribly useful on the [[Plane of Water]], where the portal moves.
-* Use a [[crystal ball]] and search for [[^]]. This will leave you immobile for d10 turns - unacceptable amount of time.<ref>[[Source:Detect.c#line864]]</ref>
+* Use a [[crystal ball]] and choose to search for [[^]]. Note that this will leave you immobile for d10 turns, which can be dangerous if you're low on HP or are being attacked, and has a chance to fail if your intelligence is less than 20.<ref>[[Source:Detect.c#line864]]</ref> Because of the paralyzing effect, it's not a preferred method to detect the portals on the Planes, but it's workable if you have no scrolls of gold detection. (Getting engulfed by a [[vortex]] before attempting to use a crystal ball on the Plane of Air is a wise move--if you're engulfed by an air elemental while helpless, you may lose a lot of HP.)
-* Zap a [[wand of secret door detection]] or the [[spellbook of detect unseen|detect unseen]] spell, which will detect the portal if it is within a moderate radius.
+* Zap a [[wand of secret door detection]] or the [[spellbook of detect unseen|detect unseen]] spell, which will detect the portal (and all other hidden traps and doors) if it is within radius of 8.
-* Wield or wear the [[Amulet of Yendor]] -- it could tell you whether the trail is hot or cold. Only on the [[endgame|Planes]], 6.7% chance each turn if within 12 squares of the portal.<ref>[[Source:Wizard.c#line65]]</ref>
+* Apply a charged [[Bell of Opening]] -- this will work the same way as the wand of secret door detection.
 ==References==