How to build things with StoryNexus
New Difficulty Calculations
Anthony Roberts
Posts: 15
1/31/2013
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I can safely assume this new trait on our qualities will be explained, but it appears to expand the range at which you can apply difficulty checks.
For Narrow, the # appears to denote the percentage of 100% that gets applied when you have a point above or below the difficulty check.
For Broad, well, haven't figured it out yet...
Narrow 10 (100/10 = 10%); Skill @ 6, Difficulty 6 = 50% Chance
Narrow 10 (100/10 = 10%); Skill @ 6, Difficulty 7 = 50-10 = 40% Chance
Narrow 9 (100/9 = ~11%); Skill @ 6, Difficulty 7 = 50-11 = 39% Chance
Narrow 5 (100/5 = 20%); Skill @ 6, Difficulty 7 = 50-20 = 30% Chance
Narrow 4 (100/4 = 25%); Skill @ 6, Difficulty 7 = 50-25 = 25% Chance
However at 3, it starts to go awry...
Narrow 3 (100/3 = 33%); Skill @ 6, Difficulty 7 = 50-33 = 17, but you have a 33% Chance instead...
Narrow 2 (100/2 = 50%); Skill @ 6; Difficulty 7 = 50-50 = 0, but you have a 50% Chance instead... (Shouldn't you have 10%?)
Narrow 1 however seems to be a guaranteed 100% Chance
Also, it appears that the defaults for our qualities were set to Broad 10 (They probably should have been set to Narrow 10!).
I had been play testing and wondered all of a sudden why I had an 8% chance of success, when my Skill is at 6 and the Difficulty check was only 7!
edited by Zebulan on 1/31/2013
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Anthony Roberts
Posts: 15
1/31/2013
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So it appears that I was just online at the worst time, as the Reference Guide has since been updated providing the new calculations.
For Broad difficulties, the chance of success is:
QualityLevel / DifficultyLevel * (DifficultyScaler%)
with a minimum 1% chance of success. (The default DifficultyScaler is 60%.)
For Narrow difficulties, the chance of success is:
50% + ((QualityLevel- DifficultyLevel) * (DifficultyScaler%))
with a minimum 10% chance of success. (The default DifficultyScaler is 10%.)
If anyone is interested, I threw together an excel calculator (Excel 2010) which can help with the calculations to visually see the impacts your qualities, difficulties and scale values will have. Just edit the yellow square and voila, all done.
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