A tracemap is not strictly necessary, which
is why sometimes the mapper omits one and
you might notice an error like
"tracemap not found" fly past in
all the loading text before the map starts.
But really you should do one. A
tracemap is generated by ET when in
developer mode, and once generated, it can
be used to tell ET about the contours and
geography of the map so that it knows how to
apply weather effects.
Without a tracemap, if you made your map
snow, the snow would fall into the
buildings.
Run ET, and run your map.
Once the warmup has ended, bring up the
console and type:
- \developer 1
- \generatetracemap
You'll then see a lot of lines telling
you how the generation is progressing.
When it's all finished, type in:
Don't worry about other sundry messages
that might get displayed, they don't
matter. You can quit ET again now.
The tracemap file will actually come in
handy for the next lesson, which is Making a
Command Map...
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