Making Cradle 3+ fully compatible with the Apolyton Edition

[Kull]

Polar Terraforming:

As often happens, something that seemed unusable does offer at least some utility on closer examination. In this case, while there are 12 slots on the buttonbank for Terraforming Land, there are actually 14 land terrain-types with "Add" Advances. Which means that while the game technically allows all of them to be terraformed, both Tundra and Glacier do not have the button-bank slots which would make it possible.

Admittedly there aren't many reasons for terraforming a tile into Tundra or Glacier, but since you can do that with Polar Hills and Polar Mountains, it does suggest that all four could be made available with their own button. Accordingly, the Terraform Ocean button has been changed to Terraform Polar, and all four terrain types are grouped under it (see bottom of attachment).

These are all activated by the new "Polar Terraforming" Advance (see top of attachment), which also activates a new TIMP, the Carbon Sink. More on that next.

Files Changed: tileimp.txt, terrain.txt, Advance.txt, advancelists.txt, uniticon.txt, gl_str.txt, Great Library, and the Tech Tree.

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[Kull]

Carbon Sink:

Interestingly, there is not a new Tile Improvement called the Carbon Sink, but rather it's an alternate form of the Mega Mine (see attached). When you select that from the button-bank and hover the cursor over a section of Mountain Terrain (bottom right of the attachment), you see a green representation of the Mega Mine graphic along with the cost and changes (mostly Production increase) that go with it.

However, if the same cursor hovers over Tundra or Glacier terrain, you see an alternate green TIMP and the cost and Production values are significantly different. That is the effect of a Carbon Sink. Not only does it feature a different graphic on the map, it operates to reduce the total Production value of the owning city, thus providing a diminished contribution to Global Production Pollution.

Realistically that's not going to be a major impact on the Global Pollution numbers, so think of this primarily as a "proof of concept" which shows that it's possible to get radically different uses from the same TIMP.

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