about fireball area of effect

[rossik]

i never care about 2ed fireball area of effect, but this time, we ar trying to "make things right".

actually, in today adventure, one pc was burned by a friend burning hands!


so, i was trying to read the fireball area of effect, but didnt get it.

if someone could explain to me, not in ft but in 'meters", i would apretiate

 

[Nifft]

temporary insanity

Glurp! This post made no sense, because I thought I was in the 4e rules forum.

Cheers, -- N

 

[theredrobedwizard]

Pick a point. A 9m ball of fire explodes from that point. If the radius is stopped (due to narrow halls, etc) the measures in the opposite directions grows.


Z = Wall
X = Open Space
F = Fireball Area
O = Origin

Normal Fireball
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX
XXXFFFFFFFFFXXX
XXXFFFFFFFFFXXX
XXXFFFFFFFFFXXX
XXXFFFFFFFFFXXX
XXXFFFFOFFFFXXX
XXXFFFFFFFFFXXX
XXXFFFFFFFFFXXX
XXXFFFFFFFFFXXX
XXXFFFFFFFFFXXX
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX
XXXXXXXXXXXXXX

Enclosed Fireball
XXXXXXXXXXXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFOFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXZFFFFFZXXX
XXXXXXXXXXXXX

This is correct, if I remember my 2nd/1st Ed math correctly.

-TRRW

 

[Nikosandros]

In AD&D a fireball is a sphere with a diameter of 6 meters. If there is not enough space for the whole sphere it will conform to the shape of the area, filling up the full volume, which is over 900 cubic meters.

 

[Festivus]

They used squares in OD&D/1Ed/2nd? I must have been playing with different rulebooks.

3 feet = 1 meter (very) roughly, so if the fireball is 60 feet diameter, it's 20 meter diameter (18.28m).

Use this: http://www.worldwidemetric.com/metcal.htm

I am trying to remember if fireballs were even round in 1E. I seem to recall that they had a volume of x, and that volume would fill down passageways and whatnot until exhausted. There are others on here with far more recent experience with 1st edition (or whichever one you are running).

edit: See, those guys are whizzes!

 

[rossik]

thanks all!

so, the point/target is the center of the explosion, right?

we were fighting a troll today, and this came up.

the troll would be the center of the explosion, but he was in the middle of a forest.

the tree wouldnt count as walls, would they?

(also, on the troll subject -highjacking myself?- fire prevents him from regenerating, so if he is burning, he can take normal damage from weapons and not regenerate. check?)

 

[frankthedm]

And then the question comes up, is that 20' radius assuming an airburst or a groundburst?

 

[Corathon]

In 1st edition (and 2E, too, I think) a fireball is a 20' radius sphere (which is roughly 6 m), not a 60' diameter. It is round (in the sense of spherical, not circular). That said, the fireball will conform to the space in which it is detonated. So it fills a volume equal to that of the 20' radius sphere, which is 33,500 cubic feet or about 950 cubic meters.

To give an extreme example, if a magic user were to detonate a fireball 50 m away in a very long corridor with no side passages that was 3m wide and 3m tall, he will burn himself. The fire will come rushing down the corridor, filling it from wall to wall and floor to ceiling (like in an action movie) for over 50 m from the detonation point both ways down the corridor.

 

[frankthedm]

well, that 33 10 foot cubes does seem to indicate that is the airburst size.

 

[Nikosandros]

In AD&D a fireball is a sphere with a diameter of 6 meters.

I'm sorry, I meant a radius of 6 meters.