What is the shape of a vehicle's space when rotated on a gridded map?


Rules Discussion

Liberty's Edge

Pathfinder Lost Omens, Rulebook Subscriber

Looking at the rules here, I'm not seeing anything that says what a vehicle's space looks like when rotated to a non-right angle. Should it be a "fat line" of sorts, using the line effect area rules and widening it sufficiently to represent its length and width?


Space and movement grid are game mechanics only. Narratively the vehicle doesn't need to be aligned with any imaginary grid. So when describing the action, describe it as needed. Narration only needs to approximately match the game mechanics.

Reading through the rules for vehicle heading and movement, I am not seeing any rules for having the vehicles mis-aligned with the movement grid. When moving the vehicle in a straight line, it can move up to 45 degrees different from its active heading. But it can only turn in 90 degree increments after moving one full vehicle length.

Liberty's Edge

Pathfinder Lost Omens, Rulebook Subscriber
breithauptclan wrote:
When moving the vehicle in a straight line, it can move up to 45 degrees different from its active heading. But it can only turn in 90 degree increments after moving one full vehicle length.

This is not the case:

Quote:
Most vehicles can turn up to 90 degrees for every vehicle length they move forward. For example, a 10-foot-long carriage could turn left in only 10 feet. A 100-foot-long warship, however, would need 100 feet to make the same turn; given the warship’s 30-foot Speed, turning typically requires several actions’ worth of movement.

A 100-foot-long warship would require at least four actions to have a heading 90 degrees in either direction from its original heading.


Tarpeius wrote:
breithauptclan wrote:
When moving the vehicle in a straight line, it can move up to 45 degrees different from its active heading. But it can only turn in 90 degree increments after moving one full vehicle length.

This is not the case:

Quote:
Most vehicles can turn up to 90 degrees for every vehicle length they move forward. For example, a 10-foot-long carriage could turn left in only 10 feet. A 100-foot-long warship, however, would need 100 feet to make the same turn; given the warship’s 30-foot Speed, turning typically requires several actions’ worth of movement.
A 100-foot-long warship would require at least four actions to have a heading 90 degrees in either direction from its original heading.

And during all four of those actions, it would still be aligned on the grid in its original direction. Because it hasn't actually turned the 90 degrees yet.

The game mechanics are a bit of an abstraction. They don't match reality or the expectations that you may want based on your experience with reality. They are in place so that we can make rulings and play the game at a playable speed rather than have to do complicated physics and calculus problems in order to answer questions about what happens.

Liberty's Edge

Pathfinder Lost Omens, Rulebook Subscriber
breithauptclan wrote:
And during all four of those actions, it would still be aligned on the grid in its original direction. Because it hasn't actually turned the 90 degrees yet.

That's a novel interpretation, but I'm not seeing a textual basis for it.


1 person marked this as a favorite.

It is the same text that we are both looking at.

After a vehicle moves its length, it is allowed to turn its heading by 90 degrees. Before it moves its length, it cannot turn its heading by 90 degrees. There is no option to turn its heading by anything other than increments of 90 degrees.

While moving, it is able to move in a direction up to 45 degrees from its current heading, but doing so does not change its current heading.

What textual basis are you seeing for any other ruling?


Debates over where a 100 foot warship ends up on a grid are pretty moot, as due the size of most battlemaps (and most tables), a 100 foot long warship can't really maneuver on a grid, so it's easier to just leave them in the same place and move all of the smaller things off the grid to represent them being left behind.

Basically, everything is positioned relative to the ship.

Liberty's Edge

Pathfinder Lost Omens, Rulebook Subscriber
breithauptclan wrote:

It is the same text that we are both looking at.

After a vehicle moves its length, it is allowed to turn its heading by 90 degrees. Before it moves its length, it cannot turn its heading by 90 degrees. There is no option to turn its heading by anything other than increments of 90 degrees.

The sole mention of "90 degree" is as follows:

Quote:
Most vehicles can turn up to 90 degrees for every vehicle length they move forward.


Quote:
Most vehicles can turn up to 90 degrees for every vehicle length they move forward.

Bolded the relevant part.

Liberty's Edge

Pathfinder Lost Omens, Rulebook Subscriber
Tender Tendrils wrote:
Quote:
Most vehicles can turn up to 90 degrees for every vehicle length they move forward.
Bolded the relevant part.

And that is not in breithauptclan's favor.


Tarpeius wrote:
Tender Tendrils wrote:
Quote:
Most vehicles can turn up to 90 degrees for every vehicle length they move forward.
Bolded the relevant part.
And that is not in breithauptclan's favor.

Oh, I agree - was just bolding it because I think the whole thing possibly started by them missing that part whenever they first read the vehicle rules.


Well, if you are going to run with the vehicle's heading not aligned to the grid, then you are likely going to have to come up with your own rules for how to represent that on the map. I don't see anything in the printed rules for it that specifies anything other than lining up with the movement grid.


And the more I think on it, the less I understand what the purpose of changing heading by less that 90 degrees would be.

Changing heading by 86 degrees wouldn't be noticeably significant.

You can already move in a straight line at up to 45 degrees different than your heading. So if the road turns by 30 degrees, you just keep your current heading on the grid and move along the road at the 30 degrees off. If instead the road turns by 65 degrees, then you change the heading by 90 degrees and can move along the road at 25 degrees off from your heading.

So what is the mechanical benefit of having the vehicle's heading misaligned with the game movement grid?

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