XP formulae

[Lokey]

Been some questions lately, here's the lame way we're doing it now:

Code: Select all

// NEW NEW XP FORMULA:
// HL = highest hitdie of party (ignore ECL here, pcs only)
// CR = Creature challenge rating

// Base XP award base(CR, HL):
// for CR >= HL: base = (25 + 6 * CR) * (0.3 * (CR - HL) + 1)
// for CR < HL: base =  (25 + 6 * CR) * (0.1 * (CR - HL) + 1)

// ECL adjustment: a % of the base award
//   = 0.1 * (10 - ECL) [i.e. ECL 1 has 10% penalty, ECL 2 20%...]

// Final XP calculation is player's hitdie/highest party member hitdie then * ECL adjustment

These were eyeballed from plotting some assumptions that got lost along the way, and probably don't match what wound up as the cr assignment to npcs. So question answered and discuss if we can do it better.

Quick spreadsheet (decimals are chopped at each step in nwn engine calcs since using ints and there's a few other factors, so not perfect):

[Rainswept]

I see HL adjustments, but I seem to remember testing and finding that there are times when adding someone of significantly lower level drops the xp the party is getting. It's been quite some time when I tested it, but I remember someone showed up to our HoD party as a lower level, just to tag along, and XP dropped. We then removed them from the party, killed a mob, noted the xp, then re-added him and killed the same mob type to confirm.

Is that reflected in these numbers?

[Amoenotep]

that would be the party xp rounders.

these formulas are single player of a given lvl killing something of a given cr within so many lvls of themself.

[Lokey]

It's mostly the same. There were some other calcs that got dropped years ago because it was too much of a hassle to do something that provided a decent xp curve and didn't take forever to calculate.

There's something that might explain what Rainswept saw, I'm not sure what it's trying to do. Was there a larger than 9 level difference?

[Rainswept]

It's mostly the same. There were some other calcs that got dropped years ago because it was too much of a hassle to do something that provided a decent xp curve and didn't take forever to calculate.

There's something that might explain what Rainswept saw, I'm not sure what it's trying to do. Was there a larger than 9 level difference?

Um, I'll have to retest to see. I want to say it was a 7 level gap, but I'm quite possibly mistaken.

TY for the replies tho.