Liquid Light

[Pinotage]

Not addressed in any official source.

My ruling would be "sticks on largest part of broken material, if severely broken then spell goes away".

I'd agree with this. Sounds sensible to me, and even works with liquids.

Pinotage

 

[the Jester]

No, a 20' radius is defined by the game. It's not actually a 20' circle, it is a radius that extends out 4 squares in every direction from a corner the caster designates. If the spell is cast on an object, you can pick which corner of the square that object occupies to determine the center point. Look in the PHB/DMG. There are templates in the back that show you different spell radii on a grid.

Er, a couple of points here:

First of all, my question on the radius of a light coming off a pc isn't 'is this how it's done,' it's 'does anyone actually run the spell like this?' That is not answered in the books at all.

Secondly, what if we don't use a Battlemat? We do, but lots of other folks don't. The squares on the Battlemat are a tactical convenience. I put forth that a 20' radius is, in fact, a 20' radius. The templates are there as an aid when using a Battlemat, not as a definition. 'Radius' is not in the glossary, either. Now, granted, in the magic chapter it talks about intersections and so forth, but again, I posit that is for tactical convenience.

This does bring another interesting issue to mind, namely how long does it take to wave your arms around?

For instance, what if I cast light on a Huge giant's bracelet? I pick an intersection, etc, etc... but if we're in combat, what does it take for the giant to change the intersection? Surely nobody is going to argue he can't... the giant occupies his entire space, which means if his light is at one edge of his space it barely crosses to the other side. Fine, fine; but what if he wants to wave that hand and get a look all around him- standard, move, free action?

Basically, all of your questions could be answered by simply reading the rules and occassionally making a judgement call based on them.

Um, the RAW doesn't actually address the questions I've raised (imho). The judgment call is no problem- much of this discussion is academic- but I'm looking for any official rules, Sage Advice discussions, etc. about these issues. The liquid issue, for instance, is not addressed in the books. Neither is the giant waving his arms around.