Difference between revisions of "Disruption"
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'''Disruption''' is a brand exclusive to [[Undeadhunter]] which does the following: | '''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. That's an average of +100% damage per swing. | *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. | ||
| − | :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 | + | :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.</ref> |
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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]]. | ||
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==References== | ==References== | ||
<references/> | <references/> | ||
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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). | ||
{{brands}} | {{brands}} | ||
[[Category:Brands]] | [[Category:Brands]] | ||
Revision as of 00:30, 3 September 2023
Version 0.30: This article may not be up to date for the latest stable release of Crawl.
| 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. That's an average of +100% damage per swing.
- Unlike other brands, the damage isn't distributed linearly. Instead, damage is equal to
3d(3 * dam + 1)/3 - 1.[1] This approximates a normal distribution with mean of roughly3/2 × dam,[2] and standard deviation of roughly1/2 × dam.[3]
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
- ↑ art-func.h:637 (0.28.0)
random2avg(X, Y) is equivalent to Yd(X) / Y - see random.cc:327 (0.28.0) - ↑ Random2avg returns an int. Due to integer truncation in C++, the average damage is slightly lower than 3/2.
- ↑ More exactly, standard dev =
1/2 × sqrt[(dam × dam) + (dam / 3)]. The difference between the two calculations is negligible, as the increase is between 0.08 and 0.083(3) for anydamabove 1.
- Following the 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).
| 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 |
