K 10
svn:author
V 8
sveinung
K 8
svn:date
V 27
2014-03-24T18:56:39.085963Z
K 7
svn:log
V 910
AI: Effects from local range buildings could be active in 1 city

When assigning building want a local building requirement could be active in 1
city. It could also, if a local building isn't sent to the evaluation function,
be active in 0 cities.

The advantage of assuming the local range is 0 is that the AI isn't confused by
rule set bugs that result in requirements that are impossible to fulfill. A
local building requirement in a requirement list that is evaluated without a
local building would otherwise trick the AI into thinking it can get it by
building the required building.

The advantage of assuming that a local building requirement is valid in 1 city
is that it can reason about triggering effects like Upkeep_Free. It is also more
correct in general to assume a local building requirement affects 1 city. In my
view this makes up for the AI being confused by a buggy ruleset.

See bug #21852
END