Angband Forums Probability of using Rods of Teleport Other?
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 February 5, 2008, 10:59 #1 Dragonboneman Adept   Join Date: Aug 2007 Posts: 182 Probability of using Rods of Teleport Other? Can someone give me an idea of when Rods of Teleport Other might become usable by a Half-Troll Warrior? My current guy (CL 36, 18 INT) just failed to use one 50 times in a row. Thanks in advance.
February 5, 2008, 11:17   #2
Mondkalb
Knight

Join Date: Apr 2007
Posts: 968
Rod of Teleport Other has a high level (45).
Your char has poor magic device ability (which will increase with level and intelligence). To calculate correct chance use the spoiler file:
http://www.juti.nl/hugo/Angband/Spoiler/ability.spo
This is a quote from the above mentioned file:
Quote:
 USING A WAND, STAFF, OR ROD --------------------------- To calculate the base ability of using a wand, staff, or rod, use the following charts. Begin with the base class ability, then add the race modifier. To take level into account, add in the product of your character's experience level and the class bonus per level modifier. To this add the appropriate intelligence modifier. This gives a numerical rating of your character's skill at using magic devices. Code: ``` Bonus per Class Base Level Int. Bonus Int. Bonus ------------------- ------------------ ------------------ Warrior 18 0.7 3-7 0 18/130-18/139 11 Mage 36 1.3 8-14 1 18/140-18/149 12 Priest 30 1.0 15-17 2 18/150-18/159 13 Rogue 32 1.0 18-18/19 3 18/160-18/169 14 Ranger 32 1.0 18/20-18/39 4 18/170-18/179 15 Paladin 24 1.0 18/40-18/59 5 18/180-18/189 16 18/60-18/79 6 18/190-18/199 17 Race Modifier 18/80-18/99 7 18/200-18/209 18 ----------------- 18/100-18/109 8 18/210-18/219 19 Human 0 18/110-18/119 9 18/220+ 20 Half-Elf 3 18/120-18/129 10 Elf 6 Hobbit 18 Gnome 12 Dwarf 9 Half-Orc -3 Half-Troll -8 Dunadan 5 High-Elf 20``` To calculate the probability of successfully activating a device, first divide your character's device skill rating by 2 if your character is currently confused. Then subtract the level of the wand, staff, or rod to be activated, with a maximum subtrahend of 50. Call the resulting number K (which may be negative). If K is at least 3, then the chance of successfully activating the wand, staff, or rod is (K-1) in K. On the other hand, if K is less than 3, the probability of successfully activating the device is very low yet nonzero; the probability of success is 2 in 3*(4-K).
This makes:
18-8+(36*0,7)+3=38
Level of rod: 45
K=38-45=-7
Chances are: 2 in 33
So you were still quite unlucky.

Last edited by Mondkalb; February 5, 2008 at 11:26.

 February 5, 2008, 11:50 #3 Dragonboneman Adept   Join Date: Aug 2007 Posts: 182 So I'm basically wasting my time with Rods of Teleport Other at the moment, and should stockpile them at home for later (at least until INT is maxed). Thanks, Mondkalb.
 February 5, 2008, 12:05 #4 Mondkalb Knight     Join Date: Apr 2007 Posts: 968 Go with wands of teleport other, they are only level 20 which makes the chances of activation for your char reasonable 17 in 18. __________________ My Angband winners so far My FAangband efforts so far
 February 5, 2008, 12:32 #5 Dragonboneman Adept   Join Date: Aug 2007 Posts: 182 The worry with using wands is not activating them, which works pretty well, but draining. That's why I'd like to eventually replace wands of TO with rods, as I am currently unable to melee anything which hits to drain charges.
February 5, 2008, 20:59   #6
Pete Mack
Prophet

Join Date: Apr 2007
Location: Seattle, WA
Posts: 6,206
Donated: \$40
Quote:
 Originally Posted by Dragonboneman The worry with using wands is not activating them, which works pretty well, but draining. That's why I'd like to eventually replace wands of TO with rods, as I am currently unable to melee anything which hits to drain charges.
Zap drainers (with TO) before they get you. There's really no reason to fight highlevel 'W', etc. You only need 8 more device points to get a reasonable response from the rods, in any case--maybe 4 character levels, and a few potions of Intelligence.

 February 5, 2008, 21:41 #7 Dragonboneman Adept   Join Date: Aug 2007 Posts: 182 Put like that, it doesn't sound too bad. Expect a YASD post shortly.
 February 7, 2008, 09:14 #8 Dragonboneman Adept   Join Date: Aug 2007 Posts: 182 Told you so. Death dump is on the ladder. Turns out I only had 17 INT, not 18. Not that it matters now of course.
 February 7, 2008, 18:40 #9 d1sc0nnected Scout   Join Date: Jan 2008 Location: Portland, OR Posts: 27 Well yeah, you jinxed yourself. You shoulda knocked on wood. The RNG doesn't like being taunted.
 February 7, 2008, 19:55 #10 Dragonboneman Adept   Join Date: Aug 2007 Posts: 182 Naah. When I REALLY want to jinx myself I find Ringil. Kiss of death, that thing.

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