Add trackstop and rollers overlays

[robob27]

Add overlay for changing dump direction and friction of track stops after construction. If this is accepted, I can do a follow-up to remove the old trackstop.cpp stuff.

trackstop.mp4

Some screenshots showing how it looks with various suspend manager/building plan states:

Also adds rollers overlay (same position, size, most of the same options):

rollers.mp4

The directions appear to be flipped here but I double checked them against freshly built ones. When you press the arrow up and build the result is "FromSouth" and so on.

[myk002]

I suggest adding a CLI so this script can be used to programmatically alter the properties of track stops, for example as part of a dwarfputing setup

Also needs docs (docs/trackstop.rst) and a changelog entry (changelog.txt)

[robob27]

I suggest adding a CLI so this script can be used to programmatically alter the properties of track stops, for example as part of a dwarfputing setup

Also needs docs (docs/trackstop.rst) and a changelog entry (changelog.txt)

Added docs and changelog entry! CLI would be cool. You think it would be alright if we do that in a separate PR? I won't be able to finish that up today and not sure exactly when I'll get around to it. Could be very soon... or not 😅. Also realized that trackstop.cpp dealt with rollers too, so I should probably investigate those at some point too (before removing old trackstop stuff anyways).

Edit: Adding rollers now actually. Should be very quick.

[robob27]

Updated with rollers. trackstop.cpp handled both trackstops and rollers without being named in such a way to indicate that. Should we change the name of this script to something like trackstoprollers.lua or leave as is?

[myk002]

Leave it as it is, I think.

[myk002]

The directions appear to be flipped here but I double checked them against freshly built ones. When you press the arrow up and build the result is "FromSouth" and so on.

Is that backwards? If the arrow is up, then you're dumping to the north, and FromSouth == "ToNorth"

[robob27]

The directions appear to be flipped here but I double checked them against freshly built ones. When you press the arrow up and build the result is "FromSouth" and so on.

Is that backwards? If the arrow is up, then you're dumping to the north, and FromSouth == "ToNorth"

The direction thing I mentioned only applies to the roller direction:

rollerdirection.mp4

Dump direction for stops is handled by dump_x_shift and dump_y_shift instead of a screw pump direction.

[robob27]

I also added ^ > < v in the directions while I was adding the colors to the other ones and I think I like it. Let me know what y'all think.

directions.mp4

[myk002]

will merge once the trackstop plugin is removed (otherwise the docs will conflict)

[myk002]

Oh, I forgot -- can this function be removed?

[myk002]

can this be removed?