Re: tripping with a wall of stone

In article <44692a8f$0$5031$c3e8da3@xxxxxxxxxxxxxxxxx>,
lorenpechtel@xxxxxxxxxxxxxxxxxxx says...

As a house rule, a Ref save (with a standard spell DC) to avoid taking
1d6 damage wouldn't be an unreasonable additional effect for a wall
created in front of the chargers as a readied action.

I think the damage is low for chargers that are quite close to the
wall. Say 4d6 - d6 per 5' of distance from the point of impact.

More than free fall...?

How much damage would the horse and rider take falling at that speed??

D&D doesn't take into account falling speed, just falling distance, and
it's 1d6 per 10 ft. Your suggestion is twice that, so it seemed a bit
much.

IIRC, there's a mention somewhere of falling speed being 500 ft. in the
first round, 1000 ft. each round after that. Charging horses move, what,
100 ft. per round? And unless the caster times the wall inhumanly well,
they probably won't just smack into it full speed but will already be
trying to slow down as they collide.

But let's commit the sin of using real world physics in D&D...

With speed 50 ft., a horse's running speed is 200 ft./6 seconds. That's
about 10 m/s. That's one second worth of free fall. One second of free
fall is a fall from about 5 m, which is about 15 ft. So my 1d6 was just
about right!

.... so just for fun, I worked out a formula to convert D&D-style speed
(expressed in ft./move action) into the falling distance which results
in the same impact velocity (assuming charging creatures move as fast as
running creatures, so that the moving takes about 3 s and the attack
about 3 s):

Fall = Speed^2 * 7e-3

A charging horse (50 ft. speed) would hit the wall as if falling from
about 17 ft.: 1d6 or 2d6 damage.

A charging armoured human (20 ft. speed) hits it as if falling from 3
ft.: no damage.

A charging flying dragon (200 ft. speed) hits it as if falling from 280
ft.(!): more enough to tear through the wall, so it's again left to the
DM to adjudicate exactly how much damage the dragon takes, how much the
wall takes... :p

This also assumes that the creatures don't have the time (or desire) to
"brake" once they notice the wall, but just smack into it at full
charging speed.

So there. That was pretty useless, wasn't it? :)


--
Jasin Zujovic
.

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