Rules of the Game, Metric II

Conaill said:
I'd be interested in hearing from some of the people with a metric (i.e. German, Italian etc) version of the core books how the long-distance conversions are handled in their books. For example:

- What is the range in km of the Whispering Wind spell? (1mile/level, Skip says 2.1 km/lvl)
- What is the Overland distance in km a person with a base speed of 30' (9 m using 5'=1.5 m, 12 m according to Skip) can walk in one hour? (3 miles, Skip says 7.2 km)
From the german translation (3.0):
-Whispering Wind: 1.5 km/level
-Base Speed 30': 9m per round, 4.5 km per hour, 36 km per day

They're simply using 1 mile = 1.5 km
 

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Conaill said:
Except that 40km/day is for a creature with a base speed of 9m (30'). What about a creature with a reduced speed of 20', or a horse with a speed of 50'? 40 km/day sounds easy, but 26.7 or 66.7 km/day is a lot more unwieldy. I would much prefer 9m -> 4.5 km/hr -> 36 km/day.
For other speeds:

15' -> 4 m -> 2.5 km/h -> 20 km/day
20' -> 6 m -> 3.5 km/h -> 28 km/day
30' -> 9 m -> 5 km/h -> 40 km/day
40' -> 12 m -> 7 km/h -> 56 km/day
 

Staffan said:
For other speeds:
15' -> 4 m -> 2.5 km/h -> 20 km/day
20' -> 6 m -> 3.5 km/h -> 28 km/day
30' -> 9 m -> 5 km/h -> 40 km/day
40' -> 12 m -> 7 km/h -> 56 km/day
Darn. So that means you have to consult the table for just about anything! No simple formula to convert.
 

I haven't looked at the table too closely but it seems like it's based on 5' = 2m with everything being converted by converting every 5' into 2m. So basically, 1' = 40cm or about 30% too much. This seems to imply that you should be able to convert directly, by increasing all distances by a little over 30% somewhere along the conversion, to account for the rounding error. Would that work?
 

Nuclear Platypus said:
Like skinning a cat, there's another way.

F -> C
((F + 40) / 1.8) - 40 = C

C -> F
((C + 40) * 1.8) - 40 = F

At -40 degrees, both Celsius and Fahrenheit are at the same point. Alternatively you could get a fancy calculator that does conversions for you.
And a third way. This is just an approximation of the original formula, but easily close enough for normal temperature ranges and much easier to do in your head.

For Celsius to Fahrenheit: Double and add 30.
For Fahrenheit to Celsius: Subtract 30 and half:

F = (C * 2) + 30
C = (F - 30) / 2
 

Conaill said:
Darn. So that means you have to consult the table for just about anything! No simple formula to convert.
That's precisely the reason why I've been looking at these conversions again. The were among the very first things I converted, so it's worth boing back to them again.

Using a strict 600 rounds of movement to the hour, you end up with 5.4 km in an hour for a speed of 9 m. That needs rounding, of course, so that's why I ended up at an even 5 km.

By only calculating with 500 rounds (50 minutes) of movement to the hour, the calculations becomes much simpler, so that is what I'll do for the next drop of the rules next week. I.e. your hourly movement (in km) is equal to half your speed (in m). Your daily movement (in km) will be four times your speed (in m).

By the way, I also have a simpler way of calculating encumbered speed. It's always two-thirds of your normal speed. How's that for getting rid of tables? :)

/Mikael - author of Dunder&Drakar, the swedish (and metric) D&D
 

Conaill said:
I'd be interested in hearing from some of the people with a metric (i.e. German, Italian etc) version of the core books how the long-distance conversions are handled in their books. For example:

- What is the range in km of the Whispering Wind spell? (1mile/level, Skip says 2.1 km/lvl)
- What is the Overland distance in km a person with a base speed of 30' (9 m using 5'=1.5 m, 12 m according to Skip) can walk in one hour? (3 miles, Skip says 7.2 km)


I've seen the Rules of the Game - Going Metric additions to the game by the wise sage. :) I have declined to use them at all. Our german groups have long ago decided, that 5 feet have to be 1,5 m (for convenience sake). In my campaign we use the 1 mile ~ 1,5 km conversion. In another campaign the DM instists that we use the normal conversion: 1 mile (1760 yards) = 1,609 km.

Even if the wise sage has normally a good answer to most difficult questions and inquiries THAT conversion systems is useless - I'm sorry to say that.

Even if I'm not even an D in maths it's plain to see, that by converting 5 feet to 2 m you have to travel 25% more of the the distance than an non-metric counterpart has to, because it would have to be 1,524 m (or at least 1,5 m). To put it boldly: The Going Metric Rules are crazy. :confused:

The one and only reason why our sage was given the duty to "convince" metric gamers all around the world to use 5 feet ~ 2 m is just compatibility:

"Also, other d20 games that were designed from the beginning using metric measurements, such as the Star Wars game, already use 2-meter squares." from "Going Metric (Part One)"

Kind regards
 

Scharlata said:
I've seen the Rules of the Game - Going Metric additions to the game by the wise sage. :) I have declined to use them at all. Our german groups have long ago decided, that 5 feet have to be 1,5 m (for convenience sake). In my campaign we use the 1 mile ~ 1,5 km conversion. In another campaign the DM instists that we use the normal conversion: 1 mile (1760 yards) = 1,609 km.

Even if the wise sage has normally a good answer to most difficult questions and inquiries THAT conversion systems is useless - I'm sorry to say that.

Even if I'm not even an D in maths it's plain to see, that by converting 5 feet to 2 m you have to travel 25% more of the the distance than an non-metric counterpart has to, because it would have to be 1,524 m (or at least 1,5 m). To put it boldly: The Going Metric Rules are crazy. :confused:

The one and only reason why our sage was given the duty to "convince" metric gamers all around the world to use 5 feet ~ 2 m is just compatibility:

"Also, other d20 games that were designed from the beginning using metric measurements, such as the Star Wars game, already use 2-meter squares." from "Going Metric (Part One)"

Kind regards
I think you're right on the spot there. This is all to justify the weird metric used in Star Wars. Maybe they're going to use the same in D20 Future and feel they need to start the brain control now. :heh:

/Mikael - author of Dunder&Drakar, the swedish (and metric) D&D
 

(Sorry for bringing back this old thread, it just happens that I'm reading 10 pages of topics behind.)


Conaill said:
Seems like he's going for accuracy over ease of use.

On the contrary. At least in the squares conversion, I'd say he's going for ease of use over accuracy. See why below.


Conaill said:
I'd still like to hear from someone with one of the WotC-sanctioned, official metricized books though!

From the offcial Brazillian version (masterfully translated, save for a few slips here and there):

5ft Square = 1.5 m square (which is more accurate than 2 m, because 1 ft is roughly 30 cm)

Spell ranges:
Short: 7.5 m + 1.5 m / 2 lvls
Medium: 30 m + 3 m / lvl
Long: 120 m + 12 m / lvl

Speeds:

15 ft = 4.5 m
20 ft = 6 m
30 ft = 9 m
40 ft = 12 m


Whispering Wind = 1.5 Km / lvl (which is much better than 2 km - a mile is about 1.6 km).

That's what I remember now, if anyone's interested in more measures just ask.
 
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(I wish they'd used the metric system from the beginning. I mean, those medieval measurments are flavorful and all, but no modern person should be expected to put up with that archaic nonsense.)

;)
 

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