1. We have added a Gift Upgrades feature that allows you to gift an account upgrade to another member, just in time for the holiday season. You can see the gift option when going to the Account Upgrades screen, or on any user profile screen.
    Dismiss Notice

Starbase issues

Discussion in 'Civ4 - Final Frontier Plus' started by Xellos-_^, Jun 21, 2012.

  1. Xellos-_^

    Xellos-_^ Prince

    Jan 5, 2009
    it is possible to get the civies to built Starbese for defensive purposes?

    i notice that civs only built starbases to mine resources. I have never seen one civ built a starbase for defensive purposes. When a enemy invades my system i usually pound with my starbase until the enemy fleet is on it is last HP then it is generally a matter of mop by the bomber/fighters. Majority of the time enemy fleet never even got within 3 square of my colony. When attacking i just need enough Destroyers to screen my fleet.
  2. God-Emperor

    God-Emperor Deity

    Jul 18, 2009
    I frequently see AI civs build starbases near their star systems, although it is usually only if there is also an asteroid resource nearby or a resource on a planet in the system. They frequently end up with an avenue of approach on the opposite side of the star system so they can only actually do their ranged attack when you have already taken the star system (since it is itself in range). That window is somewhat closed when the AI gets the Quantum Power tech since starbases get a free promotion giving +1 range, but if you also have it your ships all get +1 speed and can move in and attack from outside the range. It would also be reduced if the AI upgraded starbases to the Omega level, but I have never once seen an AI upgrade a starbase (I have no idea why not, other than that it is relatively expensive for them - the AI upgrade discount apparently does not apply to this).

    In the algorithm to pick a location to build a starbase, a star system owned by the AI increases the value (by quite a bit, actually - it may be worth slightly more than 1 resource if the location of the resource is very far from the capital). So do wormholes, only relevant on maps with them, and there is a small bonus for building on top of asteroids (worth 1/14th as much as a having one of their star systems inside the 5x5 area; 50 vs. 700). These are in addition to value added for resources. Currently, the resources found on planets count just as much as those in asteroids which makes the AI even more likely to build starbases that cover those star systems - it sometimes even builds starbases to include unsettled star systems with a planetary resource within their culture area which prevents anyone else from settling there.

    The highest valued locations are those that provide multiple resources. Star systems don't start to get coverage until all the better multiple resource locations have been used. A star system with a resource that is owned by that AI is generally worth more than a location with 2 resources that does not include a star system, the exception would be if the 2 resource location is a lot closer to the capital, but worth less than a location with 3 resources. A star system without a resource and no other resource close enough to be able to position a starbase between to get both is likely to be similar in value to a fairly distant single resource location. This is why a system without a resource in it or close to it, or a wormhole, will generally not get a starbase until every resource has been claimed, which might never happen.

    So it is far from perfect for defensive purposes, pretty bad in fact, but it does happen some. The later in the game it gets, the more likely it is that you will see starbases with more defensive positions.

    Bumping up the value of a star system from 700 to 800, or so, would get more defensive stations built, but it would cause them try to claim fewer resources.

    Another possible modification that would help would be to reduce the value of resources that it already has. Currently the 3rd oxygen gives just as much value to the locations around it as the 1st one did. This would have a smaller effect then it sounds like because it can take a long time for the AI to get the resources connected (they sometimes never manage to get some of them connected) so until it actually connects a resource of any specific type, the reduction for resources of that type wouldn't happen and if it can't keep its capital connected to its resources it wouldn't change anything then either. I am very tempted to make this adjustment.
  3. TC01

    TC01 Deity

    Jun 28, 2009
    Irregularly Online
    The way I see it, there are two reasons for the AI to build a starbase: defense and expansion.

    Because the AI (currently!) has no knowledge of how wormholes work, they can't factor in a wormhole's location. So it seemed to me that defending wormholes was of paramount importance- ideally, the value of a wormhole should be very high, perhaps 1000 or 1200. Since the most a map could have is six (two of three types), and the odds are that probably half that would be near the AI, this doesn't seem like too much of an expenditure to me.

    Then there are starbases placed for system defense. It would be nice if we could get the AI to build a starbase around every system, and so making it more likely to build them near solar systems would seem like a good idea.

    However, as God-Emperor points out, that would make the AI claim fewer resources...

    So, what I'm thinking is: what if we added a Starbase building? Building one in a solar system would create a starbase either on the star system or in one of the plots immediately adjacent to the star system. Or perhaps not even a starbase, but some new space station type that doesn't expand culture but has the same weaponry of a starbase? (It would be a one-in-a-system building, of course).
  4. PsiCorps

    PsiCorps FF: Babylon 5 mod team

    Dec 30, 2007
    This would be a very good solution. From a purely personal and selfish point of view I would be able to generate Babylon 5 as a physical element in the game rather than, as we have it now, a world wonder.

Share This Page