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sowings
Chieftain
Jul 2008
time: 23:25
24-07-2008 09:20
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Unchop? Suffering from ads?


While reading over these threads to try to improve my game, I notice that there is a lot of mention of chopping trees to improve production. The fact that I tend not to do so (looking forward to railroads and lumbermills) might be why I continue to play at lower difficulties. (And I always wondered why I never saw trees in AI territories that I conquered!)

So now my question is this: For the initial city, when you're chopping out workers and/or settlers, do you ever leave those newly denuded lands unimproved, to potentially regrow forest? Or does it all become farms and cottages?

Also, does anyone know the conditions under which a forest will regrow? Are adjacent tiles a factor? Clearly, it wouldn't regrow in an improved tile, but will a road alone prevent tree growth?

wodan11
King
Oct 2006
time: 23:25
24-07-2008 10:54
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Roads retard growth but don't prevent it.

There's no point in improving more tiles than you have city pop, so I'd improve only that many tiles. Others can and should be left alone and adjacent to forest if possible, for regrowth. Those other forest can even be outside the city radius if you've got a few oddball tiles that are squeezed in between a mountain range or something.

couerdelion
Civ4 SP Democracy Game
King
Jan 2006
time: 23:25
24-07-2008 12:32
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Yes. I like to leave forests every three tiles to encourage them to grow back later.

That said, if it is the choice between Oracle and keeping a forest, I'll take the Oracle

TriMiro
Warlord
Feb 2003
time: 23:25
24-07-2008 14:36 | www
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Chop, but plan ahead. In every city I make a decision on how much forest to keep and how much to chop. Then I decide when to chop (usually when I for a wonder).

rah
Civilization II MultiplayerCivilization III MultiplayerRise of Nations MultiplayerApolytoners Hall of FameCivilization IV: Multiplayer
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Lord of the Ferrets
Nov 1999
time: 17:25
24-07-2008 14:38
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I remember somewhere that it requires 3 contiguous forests squares to generate a new forest, So i'll leave a few unimproved squares around those clumps.
And try to break up similar jungle combinations to impede jungle creep.

wodan11
King
Oct 2006
time: 23:25
24-07-2008 15:01
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quote:
Originally posted by rah
I remember somewhere that it requires 3 contiguous forests squares to generate a new forest, So i'll leave a few unimproved squares around those clumps.
And try to break up similar jungle combinations to impede jungle creep.

Really? Learn something new every day. Thanks Rah

Jaybe
Mac
Emperor
Henderson, NV USA
Sep 2001
time: 15:25
24-07-2008 15:28
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quote:
Originally posted by rah
I remember somewhere that it requires 3 contiguous forests squares to generate a new forest, So i'll leave a few unimproved squares around those clumps.
And try to break up similar jungle combinations to impede jungle creep.

Definitively untrue. A single forest tile is all it takes, so Wodan: unlearn that immediately!.

Particularly with Forest Preserves (I've been so many hours involved with my current late-game that I am not 100% certain re pre-Preserves).

Supr49er

Civilization IV PBEMApolyton UniversityDiploGamesCiv4 SP Democracy Game
Prince
Paso Robles, California
Jan 2006
time: 15:25
24-07-2008 16:36
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With the new Global Warming dynamics in the late game, I keep way more forests than before. Jungles are cleared however.

sowings
Chieftain
Jul 2008
time: 23:25
24-07-2008 16:46
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quote:
Originally posted by Supr49er
With the new Global Warming dynamics in the late game, I keep way more forests than before. Jungles are cleared however.


Was it that had the little glowing orb to indicate the rise of global warming, as it transitioned from a dull red to orange to yellow to white?

I really could use something like that. I tend not to get power by coal EVAR, builds as many of the buildings as I can in my large cities, and yet there are still grasslands becoming desert across my lands. I realize that part of it has to do with the effects of other civilizations, too, but it would be nice to know when you're near the tipping point.

Jaybe
Mac
Emperor
Henderson, NV USA
Sep 2001
time: 15:25
24-07-2008 16:46
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In the areas between cities (outside the BFCs), I leave the jungles unless there is a vacant grassland tile adjacent in any of the NSEW (aka 8264) directions. If there is a potentially competing woods tile, I'll DEFINITELY chop the jungle.

rah
Civilization II MultiplayerCivilization III MultiplayerRise of Nations MultiplayerApolytoners Hall of FameCivilization IV: Multiplayer
Co-Owner/ Administrator (Reasonable One)
Lord of the Ferrets
Nov 1999
time: 17:25
24-07-2008 16:48
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quote:
Originally posted by Jaybe

Definitively untrue. A single forest tile is all it takes, so Wodan: unlearn that immediately!.

Particularly with Forest Preserves (I've been so many hours involved with my current late-game that I am not 100% certain re pre-Preserves).


Wow, just one. Thanks for the clarification.
Does having more forest increase the odds or is it just that every forest gets a chance to spread because almost everytime I see it happening its by a group? (but since I was expecting to see that result, I probably blanked out times when it wasn't the case. )

johnmcd
Apolyton University
King
Edinburgh
Oct 1999
time: 23:25
24-07-2008 17:48
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I think each tile has a chance of spreading each year. So a tile bordered by lots of trees has a much better chance than one bordered by just the one.

I think the chance is of spread is based on years, not turns. So in the early game spread is much more likely than in the late game, one turn equally many years early on.

Blaupanzer

King
Fairfax, VA
Oct 2000
time: 18:25
24-07-2008 18:38
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Forest will regrow at the end of a chain of forests or in a clump of forest tiles etc. It will not grow unless the tile is adjacent to a forest tile, and is undeveloped. Also john is right about regrowth being much more common in the earlier eras where each turn represents multiple years.

It is news to me that forest or jungle will regrow on a tile with a road.

What are the new Global Warming dynamics referred to above? Although my games often end in late twentieth century, I've not been aware of any global warming unless nukes have been used. If that is not the current model, a)I'd like to know what's up, and b) we definitely need the little sun marker that sowings suggested.

By the way, welcome to Apolyton, sowings. You sound like you may be a veteran of the Civ-franchise of games.

Jaybe
Mac
Emperor
Henderson, NV USA
Sep 2001
time: 15:25
24-07-2008 19:17
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#14 | report |
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To clarify, I have read recently (here or CFC), that forests/jungle definitely only spread to a cardinal direction, not on a diagonal. I have not found any contrary evidence.

When opportunity knocks, I will preserve forest in a checkerboard fashion and clear the others (chop forest, potentially pillage improvements) to provide greatest chance of forest spread for future harvesting (or global warming abatement).

Disclaimer (the larger print edition): I have slightly increased forest growth (by 4), because I have increased forest disappearance (from 0 to 4). I have previously mentioned my disdain for excessive predictability ... the inconvenience of losing an occasional lumbermill or forest preserve (dangit, I lost one to my national park city!!) should not be avoided. Pulling one's hair out in in-game frustration is a good thing!
I have also zeroed out the forest-growth inhibition to routes (ROUTE_FEATURE_GROWTH_MODIFIER changed from -50 to 0 in GlobalDefines.xml).

Blaupanzer

King
Fairfax, VA
Oct 2000
time: 18:25
24-07-2008 19:38
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Jaybe, I had a forest grow on the diagonal at the end of a chain of woods in my capitol BFC last night. It came just in time for me to chop out Hanging Gardens. This was the second time that tile had regrown forest on that same SE angle from the next forest tile. Nothing "cardinal" about that direction. I have not modded anything other than the patches through the 3.17 update. (I tend to chop the inner woods around my capitol fairly quickly to improve the line of fire around the city. That is why I noticed this tile's regrowth as it put woods right next to my capitol while the world was still in the truly heavy raging barbarians period.)

Jaybe
Mac
Emperor
Henderson, NV USA
Sep 2001
time: 15:25
24-07-2008 19:57
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quote:
Jaybe, I had a forest grow on the diagonal at the end of a chain of woods in my capitol BFC last night

WONDERFUL! I can't wait to experience similar bliss.
Hopefully, I will confirm it here once I do. Until then, I will continue to look for it as long as I am playing civ4.

sowings
Chieftain
Jul 2008
time: 23:25
25-07-2008 11:29
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quote:
Originally posted by Blaupanzer
By the way, welcome to Apolyton, sowings. You sound like you may be a veteran of the Civ-franchise of games.


Yep, that's true. I first played when it was "the sum of your win-loss ratio and your GPA is a constant" during my freshman year of college. In I was master of the "bait" city--a target for nukes, without its own SDI, but within range of a sister city's protection. In the CTP games, I was perhaps overfond of space and sea cities. In I was a siege weapons collector.

But now I'm learning that I don't know squat!

Albin
Settler
Dec 2002
time: 23:25
25-07-2008 15:26
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I looked at the code. Here my results:

- If there is a unit on the tile, there is no feature growth
- Only tile from cardinal directions (north, east, south, west) increase probabilty of feature spread.
- Base probability is: forest: 8, jungle: 16, preserved feature: 64
- this gives a maximal forest: 32, jungle: 64, preserved feature: 256, when all 4 tiles arround have the same feature
- then multiply this probability with FEATURE_GROWTH_MODIFIER from GlobalDefines.xml (=25) in this way: (25+100)/100 or if there is a road, multiply instead with ROUTE_FEATURE_GROWTH (-50) in this way: (-50 + 100)/100
- this gives max. probability for forest: 40, jungle: 80, preserved feature: 320 without road
- A random number between 0 and 10000 must be smaller then this calculated probability --> maximal probability for forest: 0.4%, jungle: 0.8%, preserved feature: 3.2%

But I don't know, if this calculation is per year or per round.

Theben
Deity
Dance Dance for the Revolution!
Jan 1970
time: 18:25
25-07-2008 15:26
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I usually wind up keeping a few forest tiles around every city that has them. While early in the game I'll wait to see if forest re-grows, later on I need those tiles for my city!

sowings
Chieftain
Jul 2008
time: 23:25
25-07-2008 15:35
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quote:
Originally posted by Albin
I looked at the code. Here my results:


Cool, thanks for digging that up. I tend to "optimize" the map by wedging BFCs right up next to one another, and putting roads everywhere inside the BFC. Now I'm learning that it's not such a good idea!

Blaupanzer

King
Fairfax, VA
Oct 2000
time: 18:25
25-07-2008 16:29
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Okay Albin, does that mean forests will regrow on the diagonal at some odds. Alternatively, is my game somehow mesmerizing me into believing that that same forest tile on the diagonal from the only other forest in its 8-tile adjacent set has regrown twice and been chopped 3 times, although, per the code, that regrowth is not possible?

Speaking of the good Dr. Hoffman (as Solver did the other day), has someone been spiking my punch?

Nikomakkos
Chieftain
Jul 2008
time: 23:25
26-07-2008 07:27
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Sowings, I think you should not plan your empire and strategy around the off chance that trees might grow. There's a possible small benefit if you do that, against much bigger definite and immediate benefits.

joncnunn
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Emperor
Maryland Heights, MO
Sep 2002
time: 17:25
26-07-2008 15:55 | www
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There's a few areas you might want to consider but not much.

Try to avoid roads in all flat tundra without direct access to fresh water especaly pre 1800 AD. And if you have such a tile that's next to a forest outside all city radi, don't chop that forest outside the radi but instead plant a forest preserve there.

Blaupanzer

King
Fairfax, VA
Oct 2000
time: 18:25
01-08-2008 17:19
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joncunn, what is the point of planting a forest preserve outside of all city radii? Is this one of those "avoid global warming" strategies? Additional forest that no city is using seems like less than a footnote on how to win the game.

rjmatsleepers
Civilization II Democracy Game
King
Oct 2002
time: 23:25
01-08-2008 17:57
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quote:
Originally posted by Blaupanzer
joncunn, what is the point of planting a forest preserve outside of all city radii? Is this one of those "avoid global warming" strategies? Additional forest that no city is using seems like less than a footnote on how to win the game.


As I understand it, you can get the benefit from a forest preserve even if it is outside the fat cross. (If I'm wrong, I've been wasting my time for a quite a few games - which wouldn't be the first time .)

RJM

Theben
Deity
Dance Dance for the Revolution!
Jan 1970
time: 18:25
01-08-2008 18:21
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I do believe you are wrong. However I also build forest preserves outside of my BFC, in hopes of more trees growing. It also gives my workers something to do.

Jaybe
Mac
Emperor
Henderson, NV USA
Sep 2001
time: 15:25
01-08-2008 18:51
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(deleted ... I was just repeating a previous post (#14))

rjmatsleepers
Civilization II Democracy Game
King
Oct 2002
time: 23:25
01-08-2008 20:16
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quote:
Originally posted by Theben
I do believe you are wrong. However I also build forest preserves outside of my BFC, in hopes of more trees growing. It also gives my workers something to do.


Just checked on a previous game, and it appears that you are right. Oh well

RJM

sowings
Chieftain
Jul 2008
time: 23:25
02-08-2008 05:50
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quote:
Originally posted by Nikomakkos
Sowings, I think you should not plan your empire and strategy around the off chance that trees might grow. There's a possible small benefit if you do that, against much bigger definite and immediate benefits.


Well, I certainly haven't planned on any tree growth, but in the past I basically *never* chopped trees--only cleared jungle. This latest game, I've instead started to chop (and whip) aggressively. I did, however, leave some "first growth" forests in a checkerboard pattern at the edge or just outside of the BFCs for my "builder" cities. I had quite a few forest repops over time. And when I was able to build preserves (even those outside of the BFC), it only increased the regrowth rate!

SvenVvath
Settler
Around
Jul 2008
time: 17:25
06-08-2008 04:05
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Errr.... I've had forest grom on developed tile. It was either incense or deer. Can't remember which one.

Can someone verify this for me?

 
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