That one is smooth for me.

For me the print was triggering a lot of the time, perhaps because the tolerance was small. When I changed it to 1/56, it barely triggered.

Note my system is Linux, not sure if that makes a difference.

I've added a check for "this.value ~= nil" to fix (what I believe to be) the bug that causes regular buttons to change their color behavior when they are parented to another object. Only buttons which have an explicit this.value property will change their color behavior. Can you provide a test case...

It depends on what you call micro-stutters. I see a little bit of tearing. If I enable vsync like Tabaqui suggests, the tearing is gone but the scroll is still not 100% smooth. But that's expected because the speed isn't a constant amount of pixels per frame like it used to be in old games; that's a...

1. How to check which button was clicked? I think that we can start from something like: function love.mousepressed(x, y, button, istouch) if button == 1 then local clicked_botton = get_clicked_button (all_visible_bottons, {x=x, y=y}) end end If all you have is buttons, you can have an array of but...

Theoretically, someday I can understand them. Is here any way to save metatables into the file? Into what file? Serialization libraries rarely save metatables. You can however retrieve the metatable and serialize it, if you really want that, but it's not likely that you will get the result you expe...

Can you explain the right way how to hold in memory and draw such GUI in Löve? Best way is probably to use a GUI library, or develop your own. I'm not aware of any tutorial about creating your own GUI in Löve. I can't understand metatables and it will be nice just not use them. Not sure if this wil...

Yes, using wrapping mode. Texture:setWrap. Set the UVs to be from 0 to MAP_W/MAP_H instead of from 0 to 1. That won't work with a texture atlas, though, unless you do the wrapping manually in the shader, but you seem to be using a single texture and not an atlas, so it shouldn't be a problem.

Fix pushed, thanks for the report!

No. At best you can approximate it with polygons, and draw it as Bézier.

Draw calls are expensive, and you're using two draw calls per tile. With a 100x100 map, that's 20,000 draw calls. Try building a mesh with the whole map instead. Or maybe one with the ceiling and vertical walls, and another one with the floor and horizontal walls (to draw them at different intensiti...