What is a breath weapon "line"?

[Yehudi]

I thought this would be something easy to Google, but I cannot for the life of me actually find any rules on how a breath weapon "line" actually functions.

Does it stop the moment it hits something? Or does it go through it and hit everything along that "line"?

How wide and tall is this line? Or is it more like a laser?

[KahnyaGnorc]

It is one square wide and goes until it hits a square that you can't move through (wall, pillar, etc., as opposed to creatures or rough terrain) or it reaches its limit. Height is a tricky piece, but, usually, unless the being is so much higher (or lower) than the breather, they'd still get hit.

[Yehudi]

KahnyaGnorc wrote:

It is one square wide and goes until it hits a square that you can't move through (wall, pillar, etc., as opposed to creatures or rough terrain) or it reaches its limit. Height is a tricky piece, but, usually, unless the being is so much higher (or lower) than the breather, they'd still get hit.

Thanks! Much appreciated!

[Fuzzy-Wuzzy]

See the rules for aiming a spell for diagrams and exact definitions.

[lemeres]

visual summary- godzilla's atomic breath.

I believe this is enough to give a general idea of what you are dealing with.

[Pizza Lord]

Typically, if the line effect hits a solid object (wall, pillar, etc.) and does enough damage to break through it, then it continues (until it hits the next solid object or reaches its max. range.) Otherwise, it hits any creatures in the line, typically with a Reflex save for half damage.