Writing triggers isn't conceptually difficult, once you know what to do and not to do with the Yuri logic. Bunches of the seemingly-available functionality isn't as there as you'd like it, but once you got all that down, it's really just a matter of labor and the fine-tuning the effect you want. You can really spend a lot of time on it.
Anyway, my mod will be public domain, so you can just "rip, burn, and play," as it were.
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