Cover and Concealment

Concealment and cover work only against missile fire, and cover also provides a bonus to saving throw rolls where an effect causes physical damage, like a fireball spell.

The amount of the target that is concealed or covered determines the penalty to any missile attacks made against the target.


Target is:
Cover
Concealment

25% hidden
û2
û1

50% hidden
û4
û2

75% hidden
û7
û3

90% hidden
û10
û4

A target is impossible to hit when it is completely blocked from the archer by cover.

Line of Fire. A figureÆs line of fire is considered to run from the center of its square to the center of the targetÆs square. If the line of fire passes through any part of a square containing an obstacle, the target is considered to be covered or concealed to some extent. The DM can decide whether the target is 25%, 50%, 75%, or 90% screened, or he can roll randomly if it is not clear. If the line of fire passes through a square containing a figure engaged in melee, the archer must use the rules for firing into a melee to determine where his shot goes.

Note that intelligent creatures who are facing the archer will usually use the screening object for its maximum effect, while animals and monsters that arenÆt intelligent (Int 1 or less) will rarely try to screen themselves against an archerÆs fire.

If thereÆs any question about which squares the line of fire passes through, you can use a string, a ruler, or the edge of a card to check the missileÆs path.

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