Does movement AoO disrupt spellcasting?

This came up last game -

The cleric moved through a threatened space (actually several) and took
AoOs for doing so, then cast a healing spell. I ruled that since the
AoOs were for the movement, and not the spellcasting that they didn't
disrupt his spellcasting, and no concentration check was required.

Is that right?

- Justisaur

Justisaur wrote:
> This came up last game -
>
> The cleric moved through a threatened space (actually several) and
> took AoOs for doing so, then cast a healing spell. I ruled that
> since the AoOs were for the movement, and not the spellcasting that
> they didn't disrupt his spellcasting, and no concentration check was
> required.
>
> Is that right?

Yes. You only need to make concentration checks against damage if you take
it *whilst* spellcasting (or doing something else that requires
Concentration). The two standard ways to achieve that are:

Ready an action to attack the spellcaster when he begins casting.

Attack a spellcaster who is casting a spell with a casting time of 1 round
or more.

I believe a caster who is in an area that inflicts constant round-by-round
damage (such as on the 'hot' side of a Wall of Fire) must also make a
Concentration check, but I'm not certain.

--
Mark.