Update of bug #17953 (project freeciv):

                  Status:               Need Info => Ready For Test         
             Assigned to:                    None => jtn                    
                 Release:                         => 2.3.0-beta4            
         Planned Release:                         => 2.3.0,2.4.0            
                 Summary: Should global catasrophe (global warming / nuclear
winter) land<->sea terrain changes check surrounding terrain? => Restrict
climate change (global warming / nuclear winter) land<->sea terrain changes to
coastlines

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Follow-up Comment #1:

> However, this process takes no account of the surrounding terrain
This wasn't entirely fair; with the current rulesets, land->sea changes only
happen if there's ocean/lake or a river nearby. The problem was worse with
nuclear winter, with glacier tiles appearing randomly in the middle of the
sea.

Anyway, fixing this turns out to be trivially easy.

While I was in there, I fixed a pre-existing minor problem (that would have
been exacerbated by this change): if a change is blocked due to tile
conditions (e.g., a city tile can't be changed to a glacier per bug #15258),
that tile was immune to change -- a city on grassland near the coast would
stay on grassland indefinitely rather than fall in the sea
(warmer_wetter_result). Now, the alternative transformation
(warmer_drier_result) is enacted instead.

(file #12799)
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Additional Item Attachment:

File name: trunk-S2_3-climate-change-coastlines.diff Size:3 KB


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