Does xp gained scale with lvl?

[Rogan]

How come when I run sprint with a MiFi I'm able to master both fighting, weapon skill and armor by lvl 18/19, but in normal crawl I won't master a skill before much later?
Does xp gained from killing a monster scale with the lvl difference between you and the monster?

[archaeo]

Sprint dramatically increases the speed with which you gain XL and skill levels.

In normal crawl, every skill level and XL takes more experience to get. The rule of thumb: it takes the same experience to go from skill level 0 to 20 as it does to go from 20 to 27.

[byrel]

No. XP gained isn't scaled at all. Skill points though are scaled based on your total xp received so far. I suspect the sprint difference is that xp comes in huge chunks, so each chunk scales your skill points down by the xp received prior to killing that monster, instead of with half the monster's XP included. That's only a theory though...

[neil]

No. XP gained isn't scaled at all. Skill points though are scaled based on your total xp received so far. I suspect the sprint difference is that xp comes in huge chunks, so each chunk scales your skill points down by the xp received prior to killing that monster, instead of with half the monster's XP included. That's only a theory though...

Compared to the normal game, Sprint gives 9x the skill points per point of XP. You are right that it doesn't speed up level gain.

[ThreeInvisibleDucks]

I made the following tables some time ago as a reference to evaluate the XP cost of raising skills. They're based on my interpretation on Crawl source code, and I won't guarantee their correctness:

  Code:

** Skill points required to raise skill levels

   | Level | Points | Diff |     Pct |
   |-------+--------+------+---------|
   |     0 |      0 |    0 |   0.00% |
   |     1 |     50 |   50 |   0.17% |
   |     2 |    150 |  100 |   0.50% |
   |     3 |    300 |  150 |   1.01% |
   |     4 |    500 |  200 |   1.68% |
   |     5 |    750 |  250 |   2.52% |
   |     6 |   1050 |  300 |   3.53% |
   |     7 |   1400 |  350 |   4.71% |
   |     8 |   1800 |  400 |   6.05% |
   |     9 |   2250 |  450 |   7.56% |
   |    10 |   2800 |  550 |   9.41% |
   |    11 |   3450 |  650 |  11.60% |
   |    12 |   4200 |  750 |  14.12% |
   |    13 |   5050 |  850 |  16.97% |
   |    14 |   6000 |  950 |  20.17% |
   |    15 |   7050 | 1050 |  23.70% |
   |    16 |   8200 | 1150 |  27.56% |
   |    17 |   9450 | 1250 |  31.76% |
   |    18 |  10800 | 1350 |  36.30% |
   |    19 |  12300 | 1500 |  41.34% |
   |    20 |  13950 | 1650 |  46.89% |
   |    21 |  15750 | 1800 |  52.94% |
   |    22 |  17700 | 1950 |  59.50% |
   |    23 |  19800 | 2100 |  66.55% |
   |    24 |  22050 | 2250 |  74.12% |
   |    25 |  24450 | 2400 |  82.18% |
   |    26 |  27000 | 2550 |  90.76% |
   |    27 |  29750 | 2750 | 100.00% |

** <<Aptitude>>Skill aptitude

   Relative XP needed to gain a skill level:

   | Apt | Factor |
   |-----+--------|
   |  -5 |  2.38x |
   |  -4 |  2.00x |
   |  -3 |  1.68x |
   |  -2 |  1.41x |
   |  -1 |  1.19x |
   |   0 |  1.00x |
   |  +1 |  0.84x |
   |  +2 |  0.71x |
   |  +3 |  0.59x |
   |  +4 |  0.50x |
   |  +5 |  0.42x |