Before:
- If there was a #BPMCHANGE, tana's adjustment would be applied to _the current measure's duration_. This would result in very strange looking, impossible durations (e.g. negative)
- Additionally, this method required us to look ahead to the _next_ measure to determine the adjustment.
- Finally, it required us to keep track of two different durations: measureDurationBase (unadjusted) and measureDuration (adjusted)
After:
- Instead, we now leave the measureDuration as purely as "unadjusted".
- Then, we apply the "BPMCHANGE adjustment" _only_ when computing the fumenOffset start of the next measure.
- This requires us to keep track of both the start *and* end fumenOffset (where end = start + duration)
- However, this greatly simplifies and clarifies the code, since we:
- No longer need to "look ahead" to the next measure to compute the offset adjustment.
- No longer need to keep track of two different measureDurations (adjusted/unadjusted)
- Only need to work with a single pair of measures at a time (measureFumen, measureFumenPrev)
- The measure duration (and fumenOffsetEnd) times are now more comprehensible, since any negative offsets are only applied to the fumenOffsetStart value of the next measure.
After:
57edc7aecf