Common mistakes (discussion)

[MrMen]

@insein

It may seem like it makes the event triggers once for each object. But what actually happens is that if the conditions are met for any of the objects, the event triggers only once and stops after that. It’s confusing even when trying to explain it!

Here’s a link to an explanation about how the trigger once works (and excuse the poor repeat for each object events - it was written before I knew any better)