AI palace movement

Tatran · Jul 1, 2016

In civ1, civ2 and smac the palace/headquarters was destroyed when the capital was captured + no revolution/splitting the empire into an old and new civ occured.
I can't remember the situation in civ3 and I haven't seen the AI moving its palace in civ4, until this game.
Btw, the Inca and Babylon were 2 of my colonies.

Spoiler :

Ricci · Jul 2, 2016

I had a couple of AIs changing palace and granting independance to their former (original) territory!!!
It is indeed rare anyhow.

lindsay40k · Jul 3, 2016

It must do some kind of upkeep calculation; Huayna probably had his Forbidden Palace in his home territories and, faced with huge colonial costs, decided to move out and personally clamp down on corruption.

Tangentially, I do think there's an argument the FP should play a secondary role as the anchor for where your Palace will relocate in the event of the capital falling.

I once relocated my capital to a small-ish offshore island. It had built Artemis and I'd got GLH, and I was wondering if it'd make a commerce monster. (It didn't)

Lexicus · Jul 3, 2016

I have seen the AI move its palace multiple times, it seems to do it when the majority of its cities (or perhaps the largest cities, I dunno how exactly it makes the calculation) are on a different continent from where its original capital is.

Tapani · Jul 14, 2016

Maybe this is slightly hijacking the thread:

It seems like that when an AI capital is captured, they are given a new palace in another city? Is this how it should be or is the AI cheating?

Yes. I am a bit new to the game after all these years

Lexicus · Jul 14, 2016

Tapani said:
Maybe this is slightly hijacking the thread:

It seems like that when an AI capital is captured, they are given a new palace in another city? Is this how it should be or is the AI cheating?

Yes. I am a bit new to the game after all these years

Nope, that's how it works, if you're in the game you get a Palace automatically. If an AI were to capture your capital you'd also instantly get another one, I think in your largest city although I'm not 100% sure how the game chooses which city is the next capital.

Ricci · Jul 14, 2016

Lexicus said:
Nope, that's how it works, if you're in the game you get a Palace automatically. If an AI were to capture your capital you'd also instantly get another one, I think in your largest city although I'm not 100% sure how the game chooses which city is the next capital.

I'm almost certain the city with most culture gets the new palace.

vincentz · Jul 14, 2016

Ricci said:
I'm almost certain the city with most culture gets the new palace.

Its a bit more complicated than that

PHP:

            if (0 == pLoopCity->getNumRealBuilding(eCapitalBuilding))
            {
                iValue = (pLoopCity->getPopulation() * 4);

                iValue += pLoopCity->getYieldRate(YIELD_FOOD);
                iValue += (pLoopCity->getYieldRate(YIELD_PRODUCTION) * 3);
                iValue += (pLoopCity->getYieldRate(YIELD_COMMERCE) * 2);
                iValue += pLoopCity->getCultureLevel();
                iValue += pLoopCity->getReligionCount();
                iValue += pLoopCity->getCorporationCount();
                iValue += (pLoopCity->getNumGreatPeople() * 2);

                iValue *= (pLoopCity->calculateCulturePercent(getID()) + 100);
                iValue /= 100;

                if (iValue > iBestValue)
                {
                    iBestValue = iValue;
                    pBestCity = pLoopCity;
                }
            }

Ricci · Jul 14, 2016

vincentz said:
Its a bit more complicated than that

Oohoh!! That's why I reserved the word "almost" in my statement.. haha! Thanks Vincentz.

It seems cul ture has a plain (1) ponderation compared to GP, pop and others, maybe it is because it's absolute number is already high in the sum, as I managed to realize it seems to be indeed the major aspect within the choice.

Lexicus · Jul 14, 2016

vincentz said:

Its a bit more complicated than that

PHP:

            if (0 == pLoopCity->getNumRealBuilding(eCapitalBuilding))
            {
                iValue = (pLoopCity->getPopulation() * 4);

                iValue += pLoopCity->getYieldRate(YIELD_FOOD);
                iValue += (pLoopCity->getYieldRate(YIELD_PRODUCTION) * 3);
                iValue += (pLoopCity->getYieldRate(YIELD_COMMERCE) * 2);
                iValue += pLoopCity->getCultureLevel();
                iValue += pLoopCity->getReligionCount();
                iValue += pLoopCity->getCorporationCount();
                iValue += (pLoopCity->getNumGreatPeople() * 2);

                iValue *= (pLoopCity->calculateCulturePercent(getID()) + 100);
                iValue /= 100;

                if (iValue > iBestValue)
                {
                    iBestValue = iValue;
                    pBestCity = pLoopCity;
                }
            }

So, er, could you explain what this means to an illiterate peasant such as myself?

vincentz · Jul 14, 2016

Lexicus said:
So, er, could you explain what this means to an illiterate peasant such as myself?

Sure

It loops through all the cities. If one of them have been a capital before, it will have highest priority (code not shown. comes before what I posted). If no then it will give values to cities depending on size, culture level, culture percent, etc. The one with the highest value becomes new capital.

getPopulation() * 4); SIZE OF CITY x 4
getYieldRate(YIELD_FOOD); NUMBER OF FOOD ON TILES IN BFC
getYieldRate(YIELD_PRODUCTION) * 3); NUMBER OF HAMMERS ON TILES IN BFC x 3
getYieldRate(YIELD_COMMERCE) * 2); NUMBER OF COMMERCE ON TILES IN BFC x 2
getCultureLevel(); # OF CULTURE LEVEL :
<Type>CULTURELEVEL_NONE</Type> 1
<Type>CULTURELEVEL_POOR</Type> 2
<Type>CULTURELEVEL_FLEDGLING</Type> 3
<Type>CULTURELEVEL_DEVELOPING</Type> 4
<Type>CULTURELEVEL_REFINED</Type> 5
<Type>CULTURELEVEL_INFLUENTIAL</Type> 6
<Type>CULTURELEVEL_LEGENDARY</Type> 7
(actually not sure if NONE is 0 and POOR is 1 etc or NONE is 1 and POOR is 2 etc)

getReligionCount(); HOW MANY RELIGIONS IN CITY
getCorporationCount(); HOW MANY CORPORATIONS IN CITY
getNumGreatPeople() * 2); HOW MANY SETTLED GREAT PEOPLE x 2 IN CITY

calculateCulturePercent(getID()) + 100); HOW BIG A PERCENTAGE OF THE CULTURE IS OWN CULTURE ((0-100%) + 100) /100 AND THEN MULTIPLIED TO THE VALUE OF ALL THE OTHERS

Sorry for caps, but easier to see I guess

The last is very important. F.ex. if one city have value 200 and 0% own culture and a second city have value 101 and 100% own culture the second one will become capital (1st: 200 x 1 < 2nd: 101 x 2)

Lexicus · Jul 14, 2016

Ok, very interesting! Thank you! I always knew it had to be some complicated multi-factoral process that picked the next capital, because having seen it happen a lot (yeah I capture a lot of AI capitals, this impresses lots of girls btw) I could never reason out a consistent rule or rules from observations.

lindsay40k · Jul 15, 2016

Hmm. Do Sushi and Cereal Mills add to YIELD_FOOD?

AI palace movement

Tatran

Deity

Ricci

Prince

lindsay40k

Emperor

Lexicus

Deity

Tapani

Chieftain

Lexicus

Deity

Ricci

Prince

vincentz

Programmer

Ricci

Prince

Lexicus

Deity

vincentz

Programmer

Lexicus

Deity

lindsay40k

Emperor

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