@PhilRogers, it IS possible right now for "empty terrains", i.e. maps WITHOUT entities, but it is only possible outside of GG - please see my thread "Making some Progress on Heightmap PostProcessing" in the "3rd Party Software" Forum, where proof is given.
I have information available now how to lower the positions of entities according to changes of terrain height,
but it has not been implemented yet, since I was caught up releasing a demo of another external tool for GG.
It should not be too hard to implement the height adaption for entities/instances, but it is unclear how precise
this can be effected. Stay tuned (in the "Making some Progress on Heightmap PostProcessing").
Since the map format release remained the same with the big jump to GG totally converted to be written in C++,
(good move, TGC!) I will continue development of the heightmap post processor, if more people show interest in such a tool.
(As you might guess, I'm not associated with TGC in any way other than also being a user of GG, so, I'm somewhat
dependant on their willingness to supply format change information at the very least. )
It is also clear that an external tool is only the second best way to achieve the goal, but if it works, it may keep users satisfied while TGC may use their precious time for even more important activities on the GG product, and later come up with an integrated solution (ist already envisaged to import external heightmaps , as Lee announced.).
On the other hand, you usually don't change the terrain height of your maps every 10 minutes, so, calling an external tool
is still ok, I think, at least, as long as there is no native way in GG to do that.
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