Package of a few visual changes to make things prettier-er. Also added a helper for mapping purposes.
bugfix: "Carpets now show proper edges again."
bugfix: "Fixed layering of several map items, like disposal pipes, that were previously buried underneath turfs in the map editor (and were invisible as a result)."
bugfix: "Fixed observer sprites occasionally going underneath certain objects. Their layering has been fixed."
bugfix: "Reinforced plastic tables now show up correctly in the map editor."
rscadd: "Added a special 'lock' door helper that automatically locks doors underneath it so mappers don't have to edit variables/icon states manually."
Package of a few visual changes to make things prettier-er. Also added a helper for mapping purposes.
Fixes #18762 Fixes #18840 Fixes #19101