QUOTE (heisenman @ Feb 16 2012, 04:46 AM)
Don't those tags works with percentages as well? Something like <res: +50%>?
Aye, they do - but that poses two other problems.
For example: Let's say you deal 350 damage with a spell to a monster with ~480 Res.
Increasing that RES by 50% does not decrease the damage by 50%, as resistance follows a similar formula to atk/def (4*atk - 2*def = dmg) (2*spi - 1*res = dmg).
Therefore (citing another example) (2*125) - (1*62) = 188, but if we bolstered that res by 50%... we'd have (in essence) (2*125) - (1.5*62) = 157 - which is not anywhere near a 50% damage reduction.
This also poses a problem when the target reaches 999 RES. Because that's the stat cap, once you exceed a certain base RES, the spell becomes completely worthless - As well, if the status boosts the target's res too high, it causes all magical damage to be nullified: which isn't something I want to happen
I suppose another option would be to change the formula so that res caps at 100, and each point of res is a strict 1% damage reduction... but I think there has to be a simpler way to do things.