1.10伤害研究系列文章之二 1.10 里魔法伤害降低属性的改变对每帧伤害法术的影响（Jarulf著）
1.10 里魔法伤害降低（Magic Damage Reduced by, MDR）属性的改变对每帧伤害法术（Frame-Based Attacks, FBA）的影响
作者：Jarulf
编者：Tommi Gustafsson
译者：Pansesus
Blizzard在1.10里对魔法伤害降低（MDR）属性做了修改，降低了其对像火墙（Fire Wall）这样特定的持续性攻击法术（按每帧伤害计算的法术）的影响。Blizzard很清楚MDA能够将FBA的伤害值降得很低，因此，他们将原来按每帧计算的作用效果改为了按每秒计算的作用效果。在很多情况下，这意味着MDR的伤害降低效果只有1.09时的1/25，下面列出来的法术都适用于这一改变。
攻击方式 MDR的改变（对1.09而言） MPQ文件内名称
Arctic Blast
极地冰暴，德鲁伊 1/25 ArcticBlast1
Armageddon Fire
末日审判的火焰伤害，德鲁伊 1/25 ArmageddonFire
Armageddon Fire
末日审判的火焰伤害，超级菠萝 1/25 DiabloGeddonFire
Fire Cloud
Viper（那些会Charge的蛇）的火云 1/25 Viper_FireCloud
Firestorm, Diablo
菠萝的火风暴（带拐弯的火焰） 1/25 DiabWall
Firestorm, Druid
德鲁伊的火风暴 1/25 FireStorm
Firewall, Countess
女伯爵的火墙 1/25 CountessFirewall
Firewall, Sorceress
女巫的火墙 1/25 Firewall
Firewall, Vampire
吸血鬼的火墙 1/25 VampireFirewall
Immolation Arrow Fire, Amazon
牺牲之箭的火焰伤害 1/25 ImmolationFire
Inferno, Megademon
大恶魔（火猪）的地狱火 2/25 MegademonInferno
Inferno, Fetish
剥皮祭司的地狱火 2/25 FetishInferno1
Inferno, Sorceress
女巫的地狱火 2/25 InfernoFlame1
Lightning Breath of Death, Diablo
菠萝的红色闪电 2/25 DiabLight
Meteor Fire, Catapult
投石车的陨石火焰伤害 1/25 CapapultMeteorFire
Meteor Fire, Sorceress
女巫的陨石火焰伤害 1/25 MeteorFire
Meteor Fire, Vampire
吸血鬼的陨石火焰伤害 1/25 VampireMeteorFire
Molten Boulder Fire, Druid
德鲁伊的熔浆巨岩火焰伤害 1/25 MoltenBoulderFirePath
Wake of Fire, Assassin
刺客的火焰复生 5/25 Wake of Destruction maker
Wake of Destruction
Wake of Inferno, Assassin
刺客的复生狱火 2/25 Inferno Sentry 1
准确地说，1/25实际上是41/1024，2/25是82/1024，以此类推
所有的比值是1.10里效果与1.09里效果之比
火墙的三帧问题
火墙的计算比较特殊，它的伤害被分为三帧，三帧同时开始计算伤害。这句话的意思是，火墙每一帧造成的伤害可以被等分为三次不同的火焰伤害，每帧造成的伤害是三次伤害之和。因此，MDR对火墙伤害降低的真正数值是其表面数值的3倍。
译者对FBA的解释
许多伤害性法术是有持续时间的，如火墙和地狱火。它们的伤害计算方式比较特殊，是按每帧（Frame）造成的伤害来计算的。在1.09里，MDR对这些法术的作用方式也是按降低每帧的伤害来计算的。举个例子，如果火墙每秒能造成20点的伤害，而你的角色的MDR是10，且火墙持续时间是20帧，那你所遭受的伤害是（20-10）x 20=200而不是20 x 20 - 10=390。
下面是原文
Magic Damage Reduction Modification vs. Frame-Based Attacks
What's the deal?
Blizzard has implemented a modifier, which reduces the protective effect of Magic Damage Reduced by X (MDR) against certain continuous attacks (i.e. frame-based attacks), such as Firewall. Blizzard apparently thought that MDR was too powerful against frame-based attacks, and consequently, they reduced its effect as if it was applied once each second instead of once each frame. In many cases, this means that the effect MDR is effectively cut to one-25th. The attacks listed in the table below have MDR modifiers.
MDR Modifiers Attack MDR Modifier* MPQ Name
Arctic Blast, Druid 1/25
ArcticBlast1
Armageddon Fire, Druid 1/25
ArmageddonFire
Armageddon Fire, Diablo 1/25
DiabloGeddonFire
Fire Cloud, Viper 1/25
Viper_FireCloud
Firestorm, Diablo (twisting fire lines) 1/25
DiabWall
Firestorm, Druid 1/25
FireStorm
Firewall, Countess 1/25
CountessFirewall
Firewall, Sorceress 1/25
Firewall
Firewall, Vampire 1/25
VampireFirewall
Immolation Arrow Fire, Amazon 1/25
ImmolationFire
Inferno, Megademon 2/25
MegademonInferno
Inferno, Fetish 2/25
FetishInferno1
Inferno, Sorceress 2/25
InfernoFlame1
Lightning Breath of Death, Diablo 2/25
DiabLight
Meteor Fire, Catapult 1/25
CapapultMeteorFire
Meteor Fire, Sorceress 1/25
MeteorFire
Meteor Fire, Vampire 1/25
VampireMeteorFire
Molten Boulder Fire, Druid 1/25
MoltenBoulderFirePath
Wake of Fire, Assassin 5/25
Wake of Destruction maker, Wake of Destruction
Wake of Inferno, Assassin 2/25
Inferno Sentry 1
*) Due to precision, 1/25 is actually 41/1024. Similarly 2/25 is really 82/1024, etc.
Three Flames of Firewall
The damage of firewall attacks is dealt by three flames that hit the target at the same time. Each flame is a separate attack and hence MDR is applied 3 times. Thus, MDR effectively functions at triple normal power against firewalls.
