A triumph of UI engineering is upon us.
For I have created a functioning suite of (two) programs to edit SMTC levels with.
Really, they just allow the addition of doors to your levels, but the core is there so more stuff can be added quickly.
Also, a new version of SMTC and the old BMP Editor is bundled here, with some bugs fixed up. Big thanks to Sudtrap for finding several of these bugs.
Note: To quit the programs, just press ESC or F12. I don't recall mentioning that anywhere.
RAR file, 715KB.
Please read the Readme file before messing with the editors. Happy editing.