freeciv21
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Expand terrain-specific compatibility to specials and bases
This is a sequel of #2232, which only enabled terrain-specific sprites for river and crossings. Will require working with the set_sprite() function (specific to the back/middle/foreground layers and specials), and changes to the layer_special.cpp file.
(there's nothing wrong with this set_sprite
function)
Doesn't it need to be updated to know the terrain associated with the sprite?