coralLevelThree is nearly identical to coralLevelTwo

[jamesdooley4]

coralLevelThree() is identical to coralLevelTwo(), just with different constants for a few things. If they should match other than constants, it'd be useful to rework this post-comp to remove the duplicated code (via a template function or some other method)

Originally posted by @jamesdooley4 in #189 (comment)