Is it possible to make a resource appear near a newly-settled city?

[Antagonise]

I want to add a trait that gives a X% chance of one resource appearing and a (100-X)% chance of a different resource appearing otherwise. How would I go about this?

 

[Gleb Bazov]

LUA - sure. But I wouldn't even try to approach this in XML. If it is possible (and perhaps it is, I am just too lazy and insufficiently inventive to slam my head at that wall) in XML, it is certain to be particularly cumbersome. The problem is, resources are not placed on the map using XML. The map generation is done through LUA before the game begins. Once the game is set, there are very few options for changing core terrain aspects using XML. However, in Lua, there are plenty of useful WorldBuilder and other related functions.

 

[Antagonise]

Cheers, that's really helpful. Unfortunately, I don't think I'll be able to write any LUA any time soon.

 

[NameArleadyUsed]

EFFECT_GRANT_FREE_RESOURCE_IN_CITY could be used in similar way as civ5 Indonesian' UA but, as Gleb said, placing resource on the map requires LUA.

Maybe unique district that grants resource (REQUIREMENT_CITY_HAS_DISTRICT for granting purposes) with certain (and complicated) placement requirement to simulate your X% as a chance of having possible placement spot?
It would use the spot the same way the improvement would use otherwise with only difference being constructed by city (1/3 builder cost presumably) and being unable to swap betwen cities.

 

[Antagonise]

That second idea is pretty smart, I'll play around with it but unfortunately it doesn't really fit what I had in mind.