Super Mario Maker: World Engine (v3.4.4Fv2) - Music Event and Camera Bugs
I'll be blunt. If the engine can't even do simple things like Music Event continuation, or keeping the camera where it should be, then I don't have much hope for this years-old project.
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[Oversight] Continuous Sound Event Not Working
In this engine, all adjacent Music Event triggers are completely ignored and disabled until the one playing the music has been scrolled off-screen, at which point, other triggers can then be activated. This is not how it's supposed to work.
In Super Mario Maker 2, if the player places multiple Music Event triggers (boss music, bonus music, et cetera) around the level, then plays the level and runs through multiple triggers, the focus of the Music Event shifts to the new object, and the music will continue playing within the new range.
[Bug] Side-by-Side Springboards Make Camera Go Wacky
On occasion, bouncing on side-by-side will cause the camera to forget what it's doing and try to follow the player by going in the wrong direction. This can lead to various other problems within the level.
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It's also worth noting that sub-zones, which were in v1.0.0 of the original game, have still yet to be implemented. That aside and as I said, I don't have much hope for this project. Maybe v4.0.0 will change my mind, whoever's handling it now, but we'll have to wait until that's officially released to see.
(I swear, "ownership" of this thing bounces around more than Super Mario Bros. X did…)