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Barbarians and Capital Defence Bonus

Discussion in 'Civ2 - Strategy & Tips' started by Prof. Garfield, Oct 17, 2008.

  1. Prof. Garfield

    Prof. Garfield Chieftain Supporter

    Joined:
    Mar 6, 2004
    Messages:
    2,011
    Location:
    Ontario
    It is widely known that any unit can defend a capital against barbarians and win if the capital is the civ's only city. I do not, however, remember coming across the fact that a capital gives a 2 times defence bonus against barbarians under normal circumstances. Yet this seems to be the case, as I found by this test:

    Test Parameters
    Large Map
    Deity
    7 Civs
    Raging Hordes
    Simplified Combat
    Other Rules Standard
    Romans
    Start Techs: Bronze Working

    Vet Warriors, Not fortified, in Capital
    Vet Barb Archers attack.
    20 Archers attack a city defended with 20 warriors (city size 25). Vets and simplified combat ensure that all 20 combats are uniform.

    “Standard” expectations:
    Barb attack: 3(1.5)(1.5)=6.75 Barb Deity bonus and Vet bonus
    Warrior Defence: 1(1.5)(1.5)=2.25 City defence bonus and Vet bonus
    Barbs win 75% of the time.

    Actual Combat Results: Only Capital
    Test Warrior Archer
    Round Wins Wins
    1 20 0
    2 20 0
    3 20 0
    4 20 0
    5 20 0
    Total 100 0

    Combat Results: Capital plus one city.
    1 8 12
    2 9 11
    3 5 15
    4 8 12
    5 11 9
    Total 41 59

    Capital plus 2 cities
    1 7 13
    2 8 12
    3 7 13
    4 11 9
    5 8 12
    Total 41 59

    Capital plus 3 cities
    1 10 10
    2 8 12
    3 7 13
    4 6 14
    5 9 11
    Total 40 60

    Non Capital city plus capital
    1 6 14
    2 6 14
    3 5 15
    4 5 15
    5 6 14
    Total 28 72

    Conclusion:

    A capital does seem to give a bonus against barbarians, while non capital falls in closely with expectations. In order for the barbs to win 60% of the time, the approximate result, the warrior must defend at 4.5 or the Barb must attack at 5.4. Thus, the warrior must either have a 2x defence bonus or the archer must have a .8x penalty. An increased warrior defence of 2x seems much more plausible and within normal bonus multipliers, as opposed to a 20%penalty to an attacker.

    The attatched files are the base for the tests I did. BARBTEST tested the barbs attacking the capital while BTEST2 tested barbs attacking a regular city. To test for additional cities with the capital, create extra settlers and build cities with them in the BARBTEST file.
     

    Attached Files:

  2. Rowan

    Rowan Chieftain

    Joined:
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    Location:
    Brisbane, Queensland, AUSTRALIA
    That is a good one to know Professor.

    :)
     
  3. WildPony

    WildPony Chieftain

    Joined:
    Jan 12, 2004
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    Location:
    Southern California, USA
    nice work Prof. Garfield... adding to an ever expanding wealth of civ 2 knowledge :clap:
     
  4. forkshy

    forkshy Chieftain

    Joined:
    Nov 1, 2008
    Messages:
    22
    is it the palace that does this?

    would be interesting to try and rig a test to discover that.
     
  5. Zancor Mezoran

    Zancor Mezoran Chieftain

    Joined:
    Nov 24, 2008
    Messages:
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    Location:
    Beaverton, OR
    So I guess that when I get a message that says "X civilization destroyed by barbarians", it means that the barbarians had previously attacked and captured the capitol when X civ had one or more other cities, and then the barbarians captured the remaining city or cities before another capitol was established.

    Or, that the capitol of X civ did not have any units to protect it...
     
  6. Prof. Garfield

    Prof. Garfield Chieftain Supporter

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    Location:
    Ontario
    Possibly, or that the computer doesn't receive a total defence against barbarians if they only have one city.
     

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