Talk:Enchanting mechanics

Min/Max Levels
According to the page, the min and max range for bookshelves, b, seems a bit weird to me when b = 30. Even if that table is designed using the third slot, the formula itself gives me a minimum level of 16 to 50. If it was designed for the first slot, which sets s to 0.5, i get a range of 8 to 25 not the min of 9 shown there. On the off-hand chance of it being designed for the second slot, it gets a range for 11 to 33. Where is it that it's getting a minimum level of 9? Kalbintion 22:06, 7 June 2012 (UTC)


 * The maximum assumes the bottom slot is used, and the minimum uses the top slot. The problem is that the formula is not quite accurately described. Starting with

Base enchantment level available = (1..5 + (b/2) + 0..b)
 * where b is the number of bookshelves (as on the page currently), the top slot has

Actual level = (base / 2) + 1
 * and the middle slot has

Actual level = ((base * 2) / 3) + 1
 * All calculations are performed in integer arithmetic (all fractions round down). That '+ 1' is why the minimum level with 30 bookshelves is 9, rather than 8. Of course, all this may have changed in the latest snapshot releases. -- Orthotope 01:36, 8 June 2012 (UTC)

probability after 1.3.1
Can anyone confirm these probability charts? According to the charts it is no longer possible to get efficiency 5 on a diamond pick.