Ooookay I'm back again with another Dev update! The editor is still technically broken, but it's a lot more functional than it was before! You can paint tilesets over the rooms, add doors and lights and other entities. Aside from several bugs it should be fully featured!
There are bugs though - quite a few of them. But don't worry I'll fix them all before release. Please don't use this as your regular editor - just for experimentation!
The main issue I'm worried about now is information overload. The "draw a room" convention worked fine with a blank slate, but just take a look at that screenshot - It's too much! It's a mess. Please let me know what you think if you use it. I think it's confusing and unwieldy (just like the last system - aarrg!)
I suspect that I'll have to tweak / simplify things significantly to help players understand the new system. Probably will have to add a tutorial at some point too. My goal is to keep things simple though - we'll see!
I've already got a head start on making the interiors 3D / multistory. Next update will showcase that!