Steve Jackson Games - Site Navigation
Home General Info Follow Us Search Illuminator Store Forums What's New Other Games Ogre GURPS Munchkin Our Games: Home

Go Back   Steve Jackson Games Forums > Roleplaying > The Fantasy Trip > The Fantasy Trip: House Rules

Reply
 
Thread Tools Display Modes
Old 04-02-2019, 04:12 PM   #1
FireHorse
 
FireHorse's Avatar
 
Join Date: Feb 2008
Location: Dayton, Ohio
Default Visible Horizon

Well, here's an interesting fact…

On a nominally flat surface like the ocean, the distance to the visible horizon is a function of one's elevation above the water:

h=√(e/0.5736)

…where e is the elevation (in feet) of one's eyes above the water, and h is the distance (in miles) of the visible horizon.

So for someone standing on the deck of a ship, with their eyes only 9 feet above the water, the visible horizon is ~4 miles. But for someone sitting 52 feet up the mast in the crow's nest, the visible horizon is ~9.5 miles.

Okay, so it's probably not especially useful in any circumstances other than exactly these, but there it is. I'm filing it away in my collection of 'Obscure Mathematical Formulae for Weird (but Potentially Useful) Trivia'.
FireHorse is offline   Reply With Quote
Old 04-02-2019, 04:30 PM   #2
hcobb
 
hcobb's Avatar
 
Join Date: Aug 2004
Location: Pacheco, California
Default Re: Visible Horizon

Turn one, Wally the average wizard casts Flight, ST is now 10(7).

Turn two, Wally maintains his spell, moves half of MA 12 and is at half-speed(?) for a vertical climb. Altitude is three yards, ST 10(6)

Turns three through seven he climbs six yards per turn, then looks around at altitude 33 yards plus two for his height is 35 yards, 105 feet, horizon 13.5 miles, ST 10(1).

Turn eight he doesn't continue the spell and so lands gently and on turn nine he can move normally on the ground.
__________________
-HJC
hcobb is offline   Reply With Quote
Old 04-02-2019, 04:48 PM   #3
FireHorse
 
FireHorse's Avatar
 
Join Date: Feb 2008
Location: Dayton, Ohio
Default Re: Visible Horizon

I always forget about chea—err, exploiting things with Magic. It's like a mental block, or something…

EDIT: It occurs to me that if Wally started from that crow's nest, his maximum viewing altitude would be 157 feet, for a visible horizon of ~16.5 miles.

That's quite an advantage, if you're playing Cat & Mouse with an enemy ship that does not have a similarly talented lookout.

Last edited by FireHorse; 04-02-2019 at 04:57 PM. Reason: Afterthought
FireHorse is offline   Reply With Quote
Old 04-02-2019, 04:57 PM   #4
Skarg
 
Join Date: May 2015
Default Re: Visible Horizon

Wally also needs really good vision, a telescope, the Far Vision Spell, and/or a lack of blocking terrain and weather...
Skarg is offline   Reply With Quote
Old 04-02-2019, 05:05 PM   #5
FireHorse
 
FireHorse's Avatar
 
Join Date: Feb 2008
Location: Dayton, Ohio
Default Re: Visible Horizon

Depends what he's doing, Skarg. If all Wally needs to do is spot a ship on an otherwise empty sea, it's just a matter of looking for anything at all that breaks the line of the horizon; seeing details may not be necessary.
FireHorse is offline   Reply With Quote
Old 04-02-2019, 05:18 PM   #6
Skarg
 
Join Date: May 2015
Default Re: Visible Horizon

Quite true. That was mainly for hcobb's Flight trick...

Maybe the Flight spell should have a max altitude of some sort.
Skarg is offline   Reply With Quote
Old 04-02-2019, 05:27 PM   #7
hcobb
 
hcobb's Avatar
 
Join Date: Aug 2004
Location: Pacheco, California
Default Re: Visible Horizon

Self powered Flight and Fresh Air items and we're off to explore the moons of Cidri.
__________________
-HJC
hcobb is offline   Reply With Quote
Old 04-02-2019, 05:27 PM   #8
warhorse11h
 
Join Date: Aug 2018
Default Re: Visible Horizon

Why not craft a new spell, Summon Albatross.
warhorse11h is offline   Reply With Quote
Old 04-02-2019, 05:28 PM   #9
hcobb
 
hcobb's Avatar
 
Join Date: Aug 2004
Location: Pacheco, California
Default Re: Visible Horizon

Quote:
Originally Posted by warhorse11h View Post
Why not craft a new spell, Summon Albatross.
Bat on page 20.

Or better yet image of an Air Elemental.
__________________
-HJC

Last edited by hcobb; 04-02-2019 at 05:32 PM.
hcobb is offline   Reply With Quote
Old 04-02-2019, 05:42 PM   #10
warhorse11h
 
Join Date: Aug 2018
Default Re: Visible Horizon

Quote:
Originally Posted by hcobb View Post
Bat on page 20.

Or better yet image of an Air Elemental.
definitely bat.
warhorse11h is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Fnords are Off
[IMG] code is Off
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 12:59 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.