To save everyone's time, I'll just point out that I cannot accept maps that rely on custom artwork in the atlas. Details here.

You seem to have made a mistake when you drew your lines. If you followed Sue's tutorial, all your lines should end in that point in the middle of the circle, but it looks like you have drawn them so each line goes through the center and out the other side.

So, when trimming them, you are not just removing the part inside the circle, but the part that sticks out the other side. So when you get halfway round the circle, you don't have any more lines to trim (there is just a white remainder there that will go away on the next screen refresh).

You need to ensure that your lines end in the middle. You can do that with the :CC2SPLIT: command, but it is probably easier to just redrawing them, after all with the circular array, that's just a few seconds.

Sounds like an interesting, but also very difficult project. A CC3+ map is just a few bits of text really (stored in a binary format) that describes the layout of the entities in the map, so that means that unity would basically need to implement the full render from CC3+ to be able to turn that information into a visual representation of the map.

Lee started talking about the .fcw file format here. Unfortunately, he never finished the job:

Now added to the atlas. Thanks Quenten.

The druid is now laughing in the atlas. Thanks for the contribution.

You can just insert your image into a drawing (Using Draw -> Insert File). I recommend putting it on a dedicated sheet, so you can move the sheet up and down the stack depending on your need. Then you can just use CC3+ normally, with your image as a background.

Do remember that CC3+ isn't an image editor though, you can't do any changes yo your file, you can only put stuff on top of it.

You can't put symbols along just some of the edges of a shape. Symbols along will put them along all edges. I guess you can write a complex macro that figures out which are short and long edges, and calculates positions and puts symbols along them, but that is getting a bit complicated.

To make lines that doesn't change appearance as you zoom in/out, make sure they are using line styles that do not have paper scale enabled:

To align fill in a drawing tool, check out the macros in the Garden tools in the Annual Ferraris city style, it does exactly that.

You can use TOFFSET in a macro, but it is a bit tricky since it uses single entity pick instead of a regular selection. Means you cannot select with prior, but you can select it if you know the coordinates of the entity (But these are tricky to get for an entity drawn with a drawtool)

Depending on the kind of offset and lines you need, the double lines [DBLN] command may be easier to use in a macro.

Seems to be some weirdness with how the drawing tools makes these shapes. Normally, when you draw something, it is made available as the last selection, which is why you can select it with SELBYP and then apply various commands to it. Unfortunately, the rectangle drawing option doesn't seem to be doing this, which means the entity won't be selected, and thus won't have the commands applied to it. Not really a good workaround around that if you can't use the polygon shape, as there isn't a way to figure out what you just drew which is what a macro like this needs to do.

It doesn't matter at all. Units in CC3+ are meant to represent real world sizes, so you make the map in 240 x 180 if it is 240 by 180 miles (or feet/meters/kilometers depending on map type) or 2400 x 1800 if it is 2400x1800 miles.

For an overland map, symbol scale will vary, as you pointed out yourself, and many drawing tools have line width expressed as fraction of map size, meaning they will vary too.

For dungeon/city maps, the larger map will give you a larger area to work with, since symbol scale don't vary with map size.