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A study of espionage mission

Discussion in 'Civ3 Strategy Articles' started by Oystein, Aug 15, 2004.

  1. Oystein

    Oystein Chieftain

    Joined:
    Mar 12, 2003
    Messages:
    184
    Location:
    Norway, Oslo
    Prices:
    Parameters:
    dist - distance from actual city or capital to your nearest city
    pop - size of actual city or capital
    level - level of settlement, 1 for town, 2 for city and 3 for metropol
    opp_cult - opponents culture
    your_cult - your culture
    techs - number of opponents techs
    units - total number of opponents units
    shield - number of shields the opponent have invested

    Factors found in editor:
    base - base cost
    mapsize - average of width and height
    techrate - factor based on world size

    Code:
    [b][size=3]
    Mission          Base      Cost formula[/size][/b]
    Build an Embassy       20     dist*level + base + pop
    Investigate City       10     dist*level + base * pop
    Steal Technology       10     dist*level + base * techs*techrate/100
    Steal World Map         1     dist*level + base * mapsize
    Plant Spy              60     dist*level + base
    Steal Plans            10     dist*level + base * unit
    Initiate Propaganda   100     dist*level + base * pop * (1 + opp_cult/your_cult)
    Sabotage Production    10     dist*level + base * shield
    Expose Enemy Spy       80     dist*level + base
    For the misson where there is a choice of risk, multiply by 3/2 for carefully and 2 for safely.


    Success chance
    Build an Embassy and
    Investigate City
    Always succeed

    Plant Spy
    [Embassy 50%]
    [Conscript spy 20%]
    Regular spy 50%
    Veteran spy 60%
    [Elite spy 75%]
    If a spy plant fails you will get a flag saying so. You cant plant a spy when flagged. There is a chance of 1/3 for the flag to disappear each turn. Failing other spy mission, does not trigger the flag. You can plant a spy the same turn your spy has been exposed by a failed mission.

    Steal Technology,
    Steal World Map,
    Steal Plans
    and
    Sabotage Production
    Code:
    [b][size=3]Chance of getting away in %:[/size][/b]
                    Immidiate   Carefully     Safely
    Embassy            40           55          65
    Regular spy        60           75          85
    Veteran spy        70           85          95
    Its 80% chance of succeeding if not getting caught so:
    Code:
    [b][size=3]Chance of succeding in %:[/size][/b]
                    Immidiate   Carefully     Safely
    Embassy            32           44          52
    Regular spy        48           60          68
    Veteran spy        56           68          76
    Expose Enemy Spy
    Same probabilities as above, except you always fail if the enemy does not have a spy.

    Initiate Propaganda
    You will never get caught

    The chance of persuading each citizen are:

    spy + government + culture - 5 * units - improvment - capital + nationality

    Where:
    spy - 10 for veteran spies, 0 for regular
    improvment - 20 if the city has courthouse, 0 otherwise (This is not cumultative)
    capital - 40 for the capital, 0 otherwise
    units - number of units in garison
    nationality - 20 for your own citizen, 0 otherwise.

    The government and culture factor are found in the editor.
    Code:
    [b][size=3]Government modifier[/size][/b]
    [b]         Anarchy Desp  Monarchy Comm   Rep    Demo  Fascism Feud[/b]
    [b]Anarchy[/b]      0      0      0      0      0   [  0]     0      0
    [b]Despotism[/b]   15      0    -10    -15    -20   [-30]     0      0
    [b]Monarchy[/b]    20     15      0     -5    -10   [-25]     0      0
    [b]Communism[/b]   25     20      5      0    -10   [-20]     0      0
    [b]Republic[/b]    30     25     10      8      0   [ -5]     0      0
    [b]Democracy[/b]   35     30     20     10      5   [  0]     0      0
    [b]Fascism[/b]      0      0     -5    -20    -10   [-10]     0      0
    [b]Feudalism[/b]   20     15      0    -10    -10   [-20]   -25      0
    
    Democracy is immune against propaganda. But for some reason other governments have a modifier against demo. I have no idea why, but I included it just for fun.
    Code:
    [b][size=3]Culture factors[/size][/b]
    Disdainful     3
    Dismissive     5
    Unimpressed   10
    Impressed by  20
    Admires of    25
    In awe of     30
    If at least 3/4 of the citizen are persuading, the city will flip. This makes it easier to flip a city of size 4n, than a city of size 4n-1, and in some situation even 4n-2. If the chance of confusing 1 citizen is greater than 1/3, it will be easier to flip a city of size 4 than 2.

    If the city does not flip, the persuaded citizen will be confused. Each will give 1 unhappy face. The number of confused citizen are reduced by 1 for each turn. It is not cumultative, if there allready are confused citizen in the city, it will be raised to the number of persuaded citizen or stay the same.

    The flip chance are not affected by previous propaganda.
     
  2. Longasc

    Longasc Chieftain

    Joined:
    Jun 18, 2003
    Messages:
    2,763
    Impressive! - and useful, too, Oystein.

    Just a question, how did you derive this information?

    Could you please explain a bit what the modifier against Democracy does??? Sorry, did not get it, for what is it useful - government choice surely not.
     
  3. Pfeffersack

    Pfeffersack Chieftain

    Joined:
    May 10, 2003
    Messages:
    2,223
    Location:
    Germany
    A really helpful article.Impressive work ! :goodjob:

    Some questions: What flag do you mean? The only thing I see is a pop-up which gives the result.And means "you can't plant a spy", you are prevented from trying it or you fail everytime you try? And most important: is there a way to see if you are still "flagged"? (I assume the flag is only for the civ you try to plant the spy, correct?)
    Sorry for all the questions and thank you for answering! :)
     
  4. bed_head7

    bed_head7 Chieftain

    Joined:
    Jun 16, 2004
    Messages:
    2,494
    Thanks. I was always confused by the fact that to establish an embassy with a backward civ on the other side of the world would cost a fortune, but now I see backwardness and the size of the whole civilization have nothing to do with cost.
     
  5. Oystein

    Oystein Chieftain

    Joined:
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    Messages:
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    Location:
    Norway, Oslo
    The flag is just a mark in the save file saying that a spymission resently failed (Your assumation is correct, 1 flag for each civ). You can still try planting spies, but you will fail. Ever tried to plant a spy 100 times in one turn? You will fail each time because of the flag. If you wait 1 turn there is 33.3% chance for the flag to disapear, so 16.7% chance of success for a regular spy. If you wait 2 turns the flag has a chance of (2/3)^2 of still beeing there, giving a total chance of 27.8% planting a spy.
     
  6. Oystein

    Oystein Chieftain

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    Location:
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    I cant see the reason for modifier against demo. Maybe they set the modifiers before they decided that demo should be immune against propaganda?
     
  7. Sandman2003

    Sandman2003 Chieftain

    Joined:
    Sep 25, 2003
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    Location:
    Australia
    I have been hoping someone would unravel the secrets of the espionage function for a while. Very useful info. Thank you.
     
  8. JackRules

    JackRules incompertus vapulus

    Joined:
    Apr 1, 2002
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    Location:
    the back 9
    I have only recently started to use spies, so I don't know alot about how they work. What is the difference between "regular" and "veteran" spies? How does a regular spy become a veteran? Thanks.
     
  9. Oystein

    Oystein Chieftain

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    Location:
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    It depends on your government. Communism and fascism has veteran, the rest regular spies.
     
  10. Grille

    Grille panel insect

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    Location:
    Kiel, Germany
    Great info, especially the flag thing.:goodjob:

    I assume the AI gets flagged as well when getting caught?

    Also I wonder if the flag is set for me if the AI (or a human in MP) succesfully exposes my spy (feels like sort of a failed mission of my 'Gweeto').

    'dist' uses the usual measurement in steps of 1(1.5) per 'x'('+')tile?
     
  11. Oystein

    Oystein Chieftain

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    Yes, thats correct.
     
  12. Greebley

    Greebley Chieftain Supporter

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    Boston Area, MA
    So the enemy government type plays no role? I thought I saw players stealing during anarchy because they thought the chances were higher.
     
  13. Oystein

    Oystein Chieftain

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    Location:
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    Yes, I think there is no difference between human and AI.

    No, I just found out that the flag only get set after failed planting attempt. Other failed misson has no effect. (First post is corrected)

    I have also heard of that. But I cant find any effect of enemy government except for propaganda.
     
  14. Grille

    Grille panel insect

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    Thanks for spying all that out.:cool:
     
  15. Arathorn

    Arathorn Catan player

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    Illinois
    Great article, as usual, Oystein. Thanks. This is very useful information.

    Arathorn
     
  16. Kalach

    Kalach Infantry Specialist

    Joined:
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    Location:
    Australia
    Great article :)
    I'm sure I've had a lot more success planting spies during their anarchy, and minimal success if they are communist/fascist :hmm:
     
  17. Aggie

    Aggie Chieftain

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    Amsterdam, Netherlands
    Fantastic! Finally I can throw my inacurate tech stealing test results away :) This is a must read for every serious civver! Especially the ones moving up to deity/sid and for multiplayers, where stealing is very important.
     
  18. earthguido

    earthguido Chieftain

    Joined:
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    Argentina
    Great Article!

    I am still a long way from Emperor or Deity, but I will surely keep this in mind for when I reach that moment.
     
  19. Kuningas

    Kuningas Chieftain

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    Best article of whole year.
     
  20. chunkymonkey

    chunkymonkey Procrastinator

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    Brilliant article Oystein, I used to think there was no logic behind the successes and failures of spies. Thanks very much! :)
     

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