jump attack

Hi everyone. On one character, instead of the classic three buttons: attack, jump, and special, I made an alternative version with two attack buttons (one for punches, one for kicks), then jump and special. The extra button is the kick button (Attack2), and I can chain the two attack combos. So...

I have a boss enemy who has an attack where he can jump in the air and will try to control his descent so he crash-lands onto the player. This would work just like Dave in Final Fight 3 if that makes sense. What would be the most effective/efficient way to implement something like that...