This script contains three changes to Amy (or any character that uses CA_TWINSPIN and CA2_MELEE simultaneously):
- Amy's spring/fall frames always convert to "jump" frames, allowing her to hammer after using a spring
- The SPIN key always makes Amy use her hammer, even in the air
- The JUMP key always makes Amy use her shield ability. If Amy has no shield, the JUMP key does nothing in the air.