I am quite confused on sloped movement, and this is actually very relevant for a campaign I'm running due to the act of ascending upwards causing negative downsides.
If a character is on a slope, let's say 15-20 degrees, and they use their all their movement (30 ft.) to walk up the hill, how far would they move up the board?
Are there actual ruling for this?
Do I need to solve on a triangle to figure out how far they move?
Follow-up: At what point does one of these slopes become difficult terrain?
AFAIK there's no need to dust off your trig notes for this, it's just the DM eyeballing that a given slope is difficult terrain. There's no hard and fast parameters, just what feels right to you.
The Glossary in the 2024 PHB gives a slope of 20 degrees or more as an example of Difficult Terrain.
By trigonometry, on a 20 degree slope, 30 ft of horizontal movement would be 31.9 ft of movement along the slope. For slopes of less than 20 degrees, that difference doesn’t seem to be worth calculating (at least, personally speaking).
(Addendum: I can’t find anything in the 2024 PHB to determine how steep a slope should be before you need to use the Climbing rules.)
Firstly, I would consider the abstraction - do you need to have 5 horizontal feet on the slope, or is it enough to say that the slope is 50ft long if you walk it, so it is 10 squares long on the flat board?
Secondly, I do have a supplement for this very thing (well, mainly for flying, but it covers vertical angled distances) on Dm's Guild. Link to my forum post about it below!
Do I need to solve on a triangle to figure out how far they move?
Follow-up: At what point does one of these slopes become difficult terrain?
There are rules for Difficult Terrain for slope of 20 degrees or more
Difficult Terrain
If a space is Difficult Terrain, every foot of movement in that space costs 1 extra foot. For example, moving 5 feet through Difficult Terrain costs 10 feet of movement. Difficult Terrain isn’t cumulative; either a space is Difficult Terrain or it isn’t.
A space is Difficult Terrain if the space contains any of the following or something similar:
A creature that isn’t Tiny or your ally
Furniture that is sized for creatures of your size or larger
Heavy snow, ice, rubble, or undergrowth
Liquid that’s between shin- and waist-deep
A narrow opening sized for a creature one size smaller than you
I am quite confused on sloped movement, and this is actually very relevant for a campaign I'm running due to the act of ascending upwards causing negative downsides.
If a character is on a slope, let's say 15-20 degrees, and they use their all their movement (30 ft.) to walk up the hill, how far would they move up the board?
Are there actual ruling for this?
Do I need to solve on a triangle to figure out how far they move?
Follow-up: At what point does one of these slopes become difficult terrain?
AFAIK there's no need to dust off your trig notes for this, it's just the DM eyeballing that a given slope is difficult terrain. There's no hard and fast parameters, just what feels right to you.
The Glossary in the 2024 PHB gives a slope of 20 degrees or more as an example of Difficult Terrain.
By trigonometry, on a 20 degree slope, 30 ft of horizontal movement would be 31.9 ft of movement along the slope. For slopes of less than 20 degrees, that difference doesn’t seem to be worth calculating (at least, personally speaking).
(Addendum: I can’t find anything in the 2024 PHB to determine how steep a slope should be before you need to use the Climbing rules.)
Firstly, I would consider the abstraction - do you need to have 5 horizontal feet on the slope, or is it enough to say that the slope is 50ft long if you walk it, so it is 10 squares long on the flat board?
Secondly, I do have a supplement for this very thing (well, mainly for flying, but it covers vertical angled distances) on Dm's Guild. Link to my forum post about it below!
https://www.dndbeyond.com/forums/dungeons-dragons-discussion/dungeon-masters-guild/156841-duckslayer-games-grittier-consequential-and?page=2#c27
It's a set of tables for easily calculating diagonal distances, if that sort of thing appeals!
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There are rules for Difficult Terrain for slope of 20 degrees or more