Angband Forums > Sil How often do and what determines when Orodruth spawns?
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 January 8, 2017, 00:29 #1 protopulse Apprentice   Join Date: Dec 2016 Posts: 56 How often do and what determines when Orodruth spawns? Been playing smithing characters lately and saw in a few logs of a mention of Orodruth, which is a unique forge. Haven't seen it yet in any of the games I've played. So I have to wonder what determines if it spawns at all? And what depth should I scum for it if I want to see it?
 January 8, 2017, 01:23 #2 Pete Mack Prophet   Join Date: Apr 2007 Location: Seattle, WA Posts: 4,595 Donated: \$40 It occurs 1 in 10 enchanted forges, and enchanted forges have a roughly 1% higher chance of occurring every dungeon level deeper. So there's roughly a 2% -- actually 1-(.999)^19 -- chance of Orodruth on dl 19. It is pretty rare.
 January 8, 2017, 03:58 #3 protopulse Apprentice   Join Date: Dec 2016 Posts: 56 Ah, no wonder I haven't seen it yet. I guess scumming 950 feet is my best bet then.
 January 8, 2017, 04:33 #4 Pete Mack Prophet   Join Date: Apr 2007 Location: Seattle, WA Posts: 4,595 Donated: \$40 But there's an 84% or better chance it occurs earlier. If it does and you miss it, it will not regenerate.
 January 8, 2017, 07:59 #5 protopulse Apprentice   Join Date: Dec 2016 Posts: 56 84%? Where did you get that number? Actually, how does forge generation work? 1 in 10 enchanted forges is Orodruth. How many percent of forges are enchanted? How often do forges spawn?
 January 8, 2017, 08:09 #6 Pete Mack Prophet   Join Date: Apr 2007 Location: Seattle, WA Posts: 4,595 Donated: \$40 edit: my bad. 16%, not 84%. 16% = 1-.999^(18*19/2) The cumulative probability for Orodruth over levels 1-18. The same calculations work for enchanted forges, except using .99 instead of .999 Last edited by Pete Mack; January 8, 2017 at 08:30.
 January 9, 2017, 03:59 #7 protopulse Apprentice   Join Date: Dec 2016 Posts: 56 Do you know the probability that Orodruth spawns on each level? Say level 1 (50 feet) versus level 19 (950 feet)? It's easier for me to understand if you explain it to me in those terms.
 January 9, 2017, 04:30 #8 Pete Mack Prophet   Join Date: Apr 2007 Location: Seattle, WA Posts: 4,595 Donated: \$40 An additional 1/1000 roll on each level, so 1/1000 at level 1 -(999/1000)^2 ~ 0.002 at dl 2, etc, up to 1 - .999^19, just above the throne room. If you visit levels twice, there's a chance it will show up each time, so that increases the odds.
 January 9, 2017, 05:32 #9 protopulse Apprentice   Join Date: Dec 2016 Posts: 56 I see. Okay thank you.
 April 17, 2017, 21:10 #10 captnamazing Scout   Join Date: Mar 2017 Posts: 31 i saw it once man it was fuckin awesome i crafted some stuff then i died

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