Monstrous Compendium Vol. 1: Spelljammer Creatures
Frozen Sick
D&D Beyond Basic Rules
Basic Rules (2014)
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Thank you!!
Following the DMG guidance, wouldn't it be something like this? In this example, I drew a 15-foot Emanation, where I think the red squares should be the blocked ones (EDIT: fixed drawing in #25). Green arrows are imaginary lines and the wall is the black squares.
Hm. Maybe. I have always envisioned the AoE determination as a set of non-intersecting lines radiating outward. (If the origin were circular, they'd all be normal to the circle.)
But the definition isn't that precise, especially with regards to emanations.
I'm also not sure the AoE definition and the cover test are actually compatible, but I haven't thought hard about it. (The cover test does not make a circle, for one thing.)
Also, by the test you're using, the two westernmost red squares are definitely in the AoE.
And, for most emanations, only full cover has any effect.
Ah, right jl8e, I was focused on "the square directly east of the corner square is safe" :(
At least when playing on a grid, I've been using this method in both 5e and 5.5e, since the Cover section mentions "attack or other effect" and "area of effect". But that's just my reading of it... I know every DM has their own way, especially with this kind of thing.
Something like this, then, using my personal test:
One of the most notable things regarding AoEs in 2024 is that every single mention of "spreads around corners" was removed. It's not a thing anymore, even when it would make sense (like cloud spells).
Yeah. "spread" is the only thing that has survived from that 5e line, and only as a verb in Darkness, Daylight or Storm of Vengeance (at least in the 5.5e PHB)