Robert Garrett
aa0c8b421b
Observers are "just" systems with a Trigger as their first parameter. I've made 4 systems to handle the start and stop of the press and hover actions. Having the button *actually* do something (not just change colors) will be achieved by attaching another button to the on-press trigger. I'm expecting that the machine-ui-spawning system will do that, but in principle it could be done by anything with access to the UI's button entity ID.