- Moved all curve-related classes into a new package.
- Added some fields and methods to Curve abstract class.
- Removed the old (no longer used) Bezier subclass.
- Changed Error throwing to ErrorHandler.error() calls.
- Formatted code.
Also fixed a crash when reaching the ranking screen with the "Auto" mod active.
Signed-off-by: Jeffrey Han <itdelatrisu@gmail.com>
