How to do bitmasking to generate autotiles?

I've been searching the forum (links below) and found some examples of systems that create autotiles, editable in real time, but they're not working.

(A) construct.net/en/forum/construct-2/how-do-i-18/tilemap-auto-tile-help-69848

(B) construct.net/en/tutorials/auto-tiling-autotilegen-719

Studying the .capx files, I realized that searching for the "-1" (empty) tile no longer works in the latest version of construct2. So, I added an extra tile to the tilemap, and now the empty tile check has been replaced by this new piece, just as the function of deleting the tile has been replaced by adding the extra tile in its place. This worked in the example file by master R0j0hound.

Test: r0j0hound-autotile-example.netlify.app

Download: dropbox.com/scl/fi/64gknm1sla1phhf0pg7ma/r0j0hound-Autotile-Edit.capx

Although it is functional, (A) is from a more simplified example. I looked for a new tutorial (B), which has an event structure very similar to the previous file, but adding adjacent tiles in the calculation. However, I can't get it to work.

It has the same system of searching for the empty tile (-1), I repeated the same strategy of adding an extra tile and basing the search on it (tile id 48). There was a small error in event 17, "tiletopositionX(mouse.Y)". I made the necessary correction, but it still didn't work.

I need help!

Here an example for autotiles: dropbox.com/scl/fi/uckf677alq1mlkcyb4o2q/bitwise_mod.capx

Thank you very much for answering me! How do I add more pieces to the tilemap? Just multiply by a value greater than 32?

There is an article for more auto-tiles: code.tutsplus.com/how-to-use-tile-bitmasking-to-auto-tile-your-level-layouts--cms-25673t

For now I have no purpose to directly using auto-tiles maybe in distant future. Hope you get the big picture how to make them work.

Thanks for sharing this article! I already knew it, it helped me understand the basics, but I can't see how to transport this logic to events when I need to do more complex checks.

cms-assets.tutsplus.com/cdn-cgi/image/width=1200/uploads/users/90/posts/25673/image/182-to-22.png

Are you planning to use corner tile? Then it will be 8 direction tile detection.

An interesting article from Godot user about auto tiling.

I was hoping to find a mathematical expression, some formula that could convert the bitmask values ​​to the equivalent position in the tilemap image. The solution was to do it manually, I separated each value generated after verification in a .jason file, which serves as a guide for positioning each tile. It was also necessary to organize the image piece by piece in a new tilemap.

128autotile-bitwise-bitmask-wangtile.netlify.app