Subject
Question about transforming terrain.

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: : : Maybe I just somehow missed this somewhere, but I've looked through the manual for it multiple times; For terrain (such as hills) that can be transformed into either plains or grasslands, what determines which one it becomes? Is it random (I would expect it not to be, in a deterministic game), or is there some hidden property of the tile that determines whether it's grassland or plains "underneath" the hill? Or is it something else entirely? : : : : : : Thanks. : : It is deterministic. The 'hidden property' is the "bonus 1 flag" of the tile. If it is zero, the tile is grassland. If it is set, the tile is plains. : : : : The distribution of grassland and plains follows a fixed scheme. Before I explain it here, go to the map editor and fill a large area with grasslands: You will understand the scheme immediately (there are always two tiles of each type side by side). : : : : One more remark: : : The bonus 1 flag is not set or cleared before the transformation is done. Otherwise there would be more hill tiles with bonus 1 resources. In fact, the bonus distribution for grasslands/plains differs from the distribution for other land tiles. So what actually happens is that the bonus flag is updated when a transformation becomes effective. Means the 'real' hidden information is not the flag itself, but the tile's location code. : : I see. That's pretty interesting, and it's weird that I never noticed the pattern in playing random maps. Does that mean I can determine which it will become by looking at the surrounding tiles if enough of them are grassland/plains? : : Also, how does the peat transformation to wine or coal work?

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