I'm sure this has been discussed here and there, but once again I can't find a clear answer (or "how to") regarding swamp terrain.

How does one create/add a swamp terrain. I only need to manually add this to a scenario map.

What it should do:


Cavalry, wheeled, and artillery units cannot enter (unless on road)
Cavalry, wheeled, and artillery units cannot attack into a swamp
Causes slow movement (unless on road)
Build road through a swamp requires Engineering
Prevent cities to be built on a swamp (although swamps can provide food to nearby cities)
Causes disease to units in a swamp (damage/death?)
Causes disease to adjacent cities (sickness, loss of Pop.)
Give some defensive bonus
Can be removed (requires Engineering & use "chop jungle")


How the heck do I do all that? :)

Anyone? Thanks!

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Edit -- one way to address this issue (which turns out to be more complex than I first thought) would be to modify an existing terrain. I'm thinking of the flood plain. Like this, I would not need to mess with the art -- only with the definition of the "flood plain" effects, and possibly relabel it "Swamp". Shouldn't that be a bit less involved?

One of the ww2 mods, and the Rhyes mod have swamps, check them out.