level 14
位面旅行大师😇
楼主
我原来是这么回复的：
首先ⅹ=1一定失误，x=20一定命中。ⅹ=2~19要看Y，Y是各种修正值，包括力量、魔法加值等。我不清楚，大概是Z﹥20-敌方防御等级，就能命中吧。
实际是大于等于。这种说法是根据无冬之夜的规则，其实本质是一样的。下面这一段摘自游戏手册第73页，各位也可以自己看看，说明的是没有任何加值的情况下的问题，其实有加值的情况和这个也是一样的。看完73-74页你就能完全明白了。
THE ATTACK ROLL
When an attack is made, the Armor Class of the opponent being attacked is subtracted from the THAC0 of the attacker. The resulting number is the what the attacker must “roll” in order to hit the opponent.
This “roll of the die” is done with a d20, or twenty sided die, resulting in a number between 1 and 20. If the attacker rolls the number necessary or higher, then the attack is successful, and damage is done. If the attack is unsuccessful, then the attacker missed completely, or was unable to penetrate the opponent’s armor. For example, a 3rd-level fighter fighter has a THAC0 of 18. He is attacking a hobgoblin with an AC of 5. The AC of the hobgoblin is subtracted from the THAC0, giving a “to hit” number of 13. If the fighter rolls a 13 or higher on the twenty-sided die, he hits successfully and does damage。
这个例子说3级战士THAC0是18（这个算等级修正，没有力量等加成，白板武器），其实Y就是2了，大地精的AC5，需要18-5等于13，也就是说D20掷色子大于等于13就能命中了。我说的和这里说的其实是等价的。根据后来的规则，AC5的加值是5，在无冬之夜里面就是15，根据我说的x+2>=20-5，也是很直观的了，只是一个等式的等价变换。
2017年01月11日 00点01分
1
首先ⅹ=1一定失误，x=20一定命中。ⅹ=2~19要看Y，Y是各种修正值，包括力量、魔法加值等。我不清楚，大概是Z﹥20-敌方防御等级，就能命中吧。
实际是大于等于。这种说法是根据无冬之夜的规则，其实本质是一样的。下面这一段摘自游戏手册第73页，各位也可以自己看看，说明的是没有任何加值的情况下的问题，其实有加值的情况和这个也是一样的。看完73-74页你就能完全明白了。
THE ATTACK ROLL
When an attack is made, the Armor Class of the opponent being attacked is subtracted from the THAC0 of the attacker. The resulting number is the what the attacker must “roll” in order to hit the opponent.
This “roll of the die” is done with a d20, or twenty sided die, resulting in a number between 1 and 20. If the attacker rolls the number necessary or higher, then the attack is successful, and damage is done. If the attack is unsuccessful, then the attacker missed completely, or was unable to penetrate the opponent’s armor. For example, a 3rd-level fighter fighter has a THAC0 of 18. He is attacking a hobgoblin with an AC of 5. The AC of the hobgoblin is subtracted from the THAC0, giving a “to hit” number of 13. If the fighter rolls a 13 or higher on the twenty-sided die, he hits successfully and does damage。
这个例子说3级战士THAC0是18（这个算等级修正，没有力量等加成，白板武器），其实Y就是2了，大地精的AC5，需要18-5等于13，也就是说D20掷色子大于等于13就能命中了。我说的和这里说的其实是等价的。根据后来的规则，AC5的加值是5，在无冬之夜里面就是15，根据我说的x+2>=20-5，也是很直观的了，只是一个等式的等价变换。
