07-14-2018, 04:20 AM | #21 | |
Join Date: Apr 2005
Location: Schleswig, Germany
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Re: combat without actual defense rolls?
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07-14-2018, 06:40 AM | #22 | |
Join Date: Oct 2008
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Re: combat without actual defense rolls?
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"Your Luck only applies to (snip) or when you are being attacked (in which case you may make the attacker roll three times and take the worst roll!)." |
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07-14-2018, 07:58 AM | #23 | |
Join Date: Aug 2004
Location: Binghamton, NY, USA. Near the river Styx in the 5th Circle.
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Re: combat without actual defense rolls?
Quote:
http://gurpsland.no-ip.org/zip/AttackTable.zip
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Eric B. Smith GURPS Data File Coordinator GURPSLand I shall pull the pin from this healing grenade and... Kaboom-baya. |
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07-14-2018, 08:35 AM | #24 |
Join Date: Feb 2016
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Re: combat without actual defense rolls?
The problem with subtracting defense is that defense trumps offense in GURPS (except in the case of a critical success). If you have two characters with combat skill 24 (not unusual in my games), they both have a parry of 16, allowing them to parry around 88% of the attacks. If you replaced defense with a penalty equal to (defense-10), the probability of a successful defense drops from 88% to 2%, as the attacking character will only suffer a -6 to attack, reducing their skill from 24 to 18. In effect, the probability of a successful attack increases over eightfold, from 12% to 98%.
A better alternative would be a penalty equal to Defense. In the case of the two combatants with combat skill 24, a -16 to attack would give them an effective skill of 8, which would give them a probability of around 25% to succeed on the first attack. While it is still a doubling in the success rate of the attacker, it is better than an eightfold increase. Of course, this may make the defense for lower value characters seem much better, but that would be an illusion. The masters would suffer -10 to hit against a character with dodge 10, meaning a success rate of 90%. In the old system, the success rate would have been 55% without any deceptive attacks or feints. You still end up with a faster system for highly skilled characters (though it becomes a much slower system for low skilled characters). |
07-14-2018, 08:42 AM | #25 |
Join Date: Aug 2004
Location: Binghamton, NY, USA. Near the river Styx in the 5th Circle.
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Re: combat without actual defense rolls?
That would overly penalize mid-skill combats. Two combatants with Skill-12 have Parry-9, so would only hit on a 3 or less using that method when the real chances of a successful attack there is almost 50% (46.99%, to be precise).
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Eric B. Smith GURPS Data File Coordinator GURPSLand I shall pull the pin from this healing grenade and... Kaboom-baya. |
07-14-2018, 10:07 AM | #26 |
Join Date: Feb 2016
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Re: combat without actual defense rolls?
But the other formula would increase the effective skill of the mediocre fighter to 13, which would mean that their probability of success would increase to 83% or so.
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07-14-2018, 10:34 AM | #27 |
Join Date: Aug 2004
Location: Binghamton, NY, USA. Near the river Styx in the 5th Circle.
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Re: combat without actual defense rolls?
I already said I don't like that formula either, but 13 is closer to 12 than 3 is (and 83% is closer to 74% than 0.5% is).
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Eric B. Smith GURPS Data File Coordinator GURPSLand I shall pull the pin from this healing grenade and... Kaboom-baya. |
07-14-2018, 10:49 AM | #28 | |
Join Date: Apr 2005
Location: France
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Re: combat without actual defense rolls?
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I would like to precise something, though. In my formula, the defense is not calculated the usual way (half skill + 3). It is the full skill. Thus, two warriors with broadsword-12 would have a defense score of 12, which would give them exactly 50% chance to hit each one another. Exactly as two warriors with skill-10 or two warriors with skill-24. Having said that, I did recognize that it completely changes odds and that it even breaks when the difference between the two warriors becomes 7 or higher (the effective skill of the lower one becomes less than 3). |
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07-14-2018, 11:45 AM | #29 |
Join Date: Jan 2017
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Re: combat without actual defense rolls?
Well if someone has skill-20 and is fighting someone with skill-12, you'd expect the 20 person to quickly waste the other person anyway.
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07-14-2018, 12:52 PM | #30 | |
Join Date: Apr 2005
Location: France
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Re: combat without actual defense rolls?
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Of course, that could be corrected by still allowing a roll for the attack and, so, a successful attack in case of critical success. But the chance would remains too much low. The character with skill-20 would have about 98% chance to hit while the one with skill-12 would only have about 2%. While with EricBSmith's table (based on GURPS as written chance), it actually corresponds to a roll of 12 (for the skill-20 character) vs a roll of 6 (for the skill-12 character). |
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