'kay, I got it. The thing I said they were attacking from 2-3 blocks away... it's never more than 2 blocks. This time, it's the pixel movement that messes with you: event touch is triggered when the case the event is going to is next to the case where the player is. The thing is, as it's a pixel movement, it triggers it somehow too early.
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Yes, I believe that you are correct. Due to my decision to use pixel movement, you can be standing in the middle of two blocks but since the game has to pick a tile as your position, the event touch can and sometimes does trigger from what appears as too far away. It's a flaw, I admit. I just tried to compensate with some extra hit points as I didn't have time to seek out a more elegant solution.