31-08-2004 20:46									#1
	B-Drone formula Support Apolyton, pre-order Civilization IV

Hey what was the formula for B-drones?

	31-08-2004 21:10									#2
	Support Apolyton or Terrorists Win

B-drones have been worked out in great detail. Do a search!

The simple formula is:
b-drone limit = sqrt(map_width * map_height / 3200) * (4 + effic) * 3 / 2

3 is derived from (8 - diff) on transcend
effic is bounded below at 0

At 1*limit, you have no b-drones
At 2*limit, you have 1 b-drone/city
At 3*limit, you have 2 b-drones/city, and so on

You can never have more b-drones in a city than its size. As a consequence, Lal will never have riots at a size 1 base due to b-drones alone.

	31-08-2004 21:10									#3
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It has been posted here a couple times before, but IIRC it was hard to search for with Poly's search tool.

	31-08-2004 21:14									#4
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b-drone limit = sqrt((256 * 128) / 3200) * (4 + 0) * 3 / 2 = sqrt((32768 / 3200) * 4 * 1.5) = 10.24 * 4 * 1.5 = sqrt(61.44) = 7.84

Does it suppose to mean that on Huge map you'll get the 1st drone after you build 9th base?

	31-08-2004 23:50									#5
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quote: Originally posted by binTravkin b-drone limit = sqrt((256 * 128) / 3200) * (4 + 0) * 3 / 2 = sqrt((32768 / 3200) * 4 * 1.5) = 10.24 * 4 * 1.5 = sqrt(61.44) = 7.84 Does it suppose to mean that on Huge map you'll get the 1st drone after you build 9th base?

Why did you move the parens for the sqrt function?
sqrt(256 * 128 / 3200) * 4 * 3 / 2
= sqrt(32768 / 3200) * 4 * 3 / 2
= sqrt(10.24) * 4 * 3 / 2
= 3.2 * 4 * 3 / 2
= 19.2

So you'll have your first chance at a b-drone on your 20th base with 0 effic (you still may not get any, depending on the global base list; you could also receive one in every base).
Also note that the default huge size is 128 x 64, not 256 x 128. On the default huge size, your b-drone limit is half the one for 256 x 128, or 9.6 Thus, on your 10th base, you have a chance at a b-drone.

If you had a b-drone limit of 7.84, that would mean your 8th base could cause drones. If you increased your effic to +4, your limit would be 15.68, and your 16th base could cause drones. The fractional part is only truncated after the whole calculation.

	01-09-2004 13:46									#6
	Put an end to popups!

Now I only have to work out the size of the map..

	05-09-2004 11:14									#7
	Increase Your PM Length

quote: Originally posted by Chaos Theory You can never have more b-drones in a city than its size. As a consequence, Lal will never have riots at a size 1 base due to b-drones alone.

I think after the third b-limit, Lal can have riots in size 1 bases. It's the same with HGP, too, I think, although the mechanism is different.