start implementing ride_ratings_update_all
implement ride_ratings_update_state_3
implement ride rating calculation table and a few other things
add more ride ratings calculations and refactor
implement ride_ratings_get_scenery_score
implement ride_ratings_calculate_elevator and related functions
add more ride_rating calculation functions
implement mine train coaster rating calculation
implement rating calculations for g forces and drops
Merge branch 'ride-ratings'