I can't get it working.
I am spawning the 1-pixel-horizontal-slightly-smaller-than-3-blocks-wide over (centered) the block, everytime the block gets created and falls down. (the 1-pixel-sprite follows the block, is attached to it, by an event)
I don't know what I should do with a hotspot.
I created 3 imageboxes, so that I could perhaps let it detect if the 3 Imageboxes were overlapped, but I could find no such option for imageboxes.
So I am currently not using Imageboxes.
It only detects: block overlaps the 1-pixel-sprite.
This happens every spawning, so that's useless.
A sollution would be: if the 1-pixel-sprite is completely overlapped from left x to right x: start action.
I wouldn't know how to do this.
(or if I could somehow ("pick closest-condition" perhaps?) let blocks detect if another object is near them, on the x-axis)
What do you think I am doing wrong, or in what direction should I look for?