It's important to separate
Warmonger Amount and
Warmonger Score. Warmonger Amount refers to the amount of warmongering applied when you capture a city. It is equally applied among every civilization, regardless of their personalities or not. Consider it a raw score. It's also the most important, since this is what decays slowly each turn.
Warmonger Score is adjusted for leader's personality. This is what WarmongerHate modifies. This is also the final score that determines how an AI civilization views you. This score is used to determine the opinion weight, which, if you don't remember from previous posts, is the combination of +/- diplomatic modifiers that add up to an opinion score (hidden from the player at all times).
Without further ado, the formula for warmonger calculations:
Warmonger Amount
- City Capture: (1000 * est_num_cities) / (actual_num_cities * victim_num_cities)
- Declaration of War: 250
A few notes:
est_num_cities refers to estimated num of cities on the map. This changes based on map size, see below:
- Map Size Value
- Duel 13
- Tiny 26
- Small 39
- Standard 52
- Large 80
- Huge 132
actual_num_cities refers to the total number of cities on the map. This doesn't matter if you can see them or not, it pulls it straight from the game data.
victim_num_cities refers to the number of cities the victim has before city deletion (so, consider the captured city to be a part of that). If the civ has 3 cities, then 2 when captured, use 3. I'm pretty confident in this one, city deletion occurs after the warmonger calculations.
The warmonger amount is applied to every civilization that you've met. As the beta patch notes said, if you capture a city, divide by two if that civilization is at war with the same civilization that you've conquered from. The warmonger calculations are only applied in the event of player conquest of another civilization's city.
You do NOT get warmonger points for capturing a city you previously owned (i.e. one you settled yourself), receiving cities as gifts, or city-state buyouts.
WarmongerAmount decays at a rate of 5 per turn.
Imagine you're in the Classical Era and you capture a city on Standard. Assume there are 33 cities on the map at the time (city-states seem to be included!). Capturing a city from a civilization with 4 cities would look like:
(1000 * 52) / (33 * 4) = 393. My current warmonger score from that city alone is 393. Seems high, right? Well, we have to adjust it.
Warmonger Score
- Warmonger Score = WarmongerAmount * WarmongerHate / 1000
Warmonger Score is the adjusted value, which is what's actually used for diplomacy. To calculate, multiply our WarmongerAmount by a leader's WarmongerHate and divide by 100. In the source code, the developers stated the average warmonger hate is 5, so this results in a value roughly 1/20th of the warmonger amount. Using our previous example on a leader with warmongerHate of 5, we see: 393 * 5 / 100 = 19.
Therefore, capturing that city in the Classical Era will result in a warmonger score of 19. That's pretty high. Compare to denouncements, which are scored at 35.
Here are a few other examples, with leaders with different warmongerHates:
- WarmongerHate Warmonger Score
- 3 11
- 4 15
- 5 19
- 7 27
I'm sure you get the point. WarmongerHate greatly affects how much your warmongering will piss off other civs.
In addition to opinions, there is also warmonger threat values, which also dictate other diplomacy options (for example when leaders plan coop wars with other leaders, or World Congress vote choice scores). These thresholds are as follows:
- Type WarmongerScore
- Critical >=200
- Severe >=100
- Major >=50
- Minor >=20
These thresholds are updated every turn. You can view these thresholds in the opinion table. These are:
- Threat Text
- Critical They fear your warmongering will soon sink the world into a new Dark Age!
- Severe They believe your warmongering has become an issue of global prominence.
- Major They clearly see the potential threat posed by your warmongering.
- Minor They have some early concerns about your warmongering.
These values are logged and you may check them at any time by enabling logging (and AI logging) in config.ini and checking the MyDocuments/Civ 5/Logs folder at any time.
I should also point out that this process is reversed for liberation. So if you liberate a city from a player (instead of annex/puppeting it) you will receive negative credit, which is good.
edit: flipped the signs on the critical threat to make it easier to understand.
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