Difference between revisions of "Disruption"

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{{flavour|It deals significantly more damage against the undead.}}
 
{{flavour|It deals significantly more damage against the undead.}}
 
'''Disruption''' is a brand exclusive to [[Undeadhunter]] which does the following:
 
'''Disruption''' is a brand exclusive to [[Undeadhunter]] which does the following:
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*Has a 2/3 chance to deal an average of about +150% damage (0 - 300%) to [[undead]] targets. That's an average of +100% damage per swing.
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*Has a 2/3 chance to deal an average of about +150% damage (0 - 300%) to [[undead]] targets, or an average of +100% damage per swing.
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:Unlike other brands, the damage isn't distributed linearly. Instead, damage is equal to <code>3d(3 * dam + 1)/3 - 1</code>.<ref>{{source ref|0.28.0|art-func.h|637}}<br>random2avg(X, Y) is equivalent to Yd(X) / Y - see {{source ref|0.28.0|random.cc|327}}</ref> This approximates a normal distribution with mean of roughly <code>3/2 × dam</code>,<ref>Random2avg returns an int. Due to integer truncation in C++, the average damage is slightly lower than 3/2.</ref> and standard deviation of roughly <code>1/2 × dam</code>.<ref>More exactly, standard dev = <code>1/2 × sqrt[(dam × dam) + (dam / 3)]</code>. The difference between the two calculations is negligible, as the increase is between 0.08 and 0.083(3) for any <code>dam</code> above 1.
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:Unlike other brands, the damage isn't distributed linearly. Instead, the extra damage equals <code>3d(3 * dam + 1)/3 - 1</code>, so it's weighted towards the average.<ref>{{source ref|0.32.1|art-func.h|721}}<br>It roughly follows the [https://en.wikipedia.org/wiki/Normal_distribution normal distribution] with slightly more variance. Due to integer truncation in C++, the mean is slightly lower than the expected average of 150%.</ref>
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Following the [ https://en.wikipedia.org/wiki/68%E2%80%9395%E2%80%9399.7_rule normal distrubution], additional damage dealt is between +100% and +200% damage, 68% of the time, and between +50% and +250% damage 95% of the time (assuming it deals extra damage at all).</ref>
 
  
 
Unlike the similar [[holy wrath]] brand, this brand can be wielded by the [[undead]].
 
Unlike the similar [[holy wrath]] brand, this brand can be wielded by the [[undead]].

Latest revision as of 03:15, 7 October 2024

Version 0.32: This article is up to date for the latest stable release of Dungeon Crawl Stone Soup.
It deals significantly more damage against the undead.

Disruption is a brand exclusive to Undeadhunter which does the following:

  • Has a 2/3 chance to deal an average of about +150% damage (0 - 300%) to undead targets, or an average of +100% damage per swing.
Unlike other brands, the damage isn't distributed linearly. Instead, the extra damage equals 3d(3 * dam + 1)/3 - 1, so it's weighted towards the average.[1]

Unlike the similar holy wrath brand, this brand can be wielded by the undead.

History

  • In 0.9, Disruption was made an exclusive brand to the Undeadhunter.
  • Prior to 0.4, Disruption was a normal brand found on random melee weapons. Holy wrath was enhanced in its stead.

References

  1. ↑ art-func.h:721 (0.32.1)
    It roughly follows the normal distribution with slightly more variance. Due to integer truncation in C++, the mean is slightly lower than the expected average of 150%.
Brands
Melee weapons Antimagic • Chaos • Distortion • Draining • Electrocution • Flaming • Freezing • Heavy • Holy wrath • Pain • Protection • Reaching • Spectral • Speed • Vampiric • Venom
Disruption • Dragon slaying • Reaping • Silver
Launchers Antimagic • Draining • Electrocution • Flaming • Freezing • Heavy • Penetration • Speed
Throwing weapons Atropa • Curare • Datura • Dispersal • Poisoned • Silver
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