I think I may have been alone doing this for a long time. I have seen everyone's evaluationso that I know that there is a problem in my own practice, and I will change it a little bit.
This revision:
1.Fixed part of the collision and fall of.
2.Interaction does not move when it is animated.
3.Interactive time mouse icon is changed into an exclamation mark.
4.esc changes to the cleaning window.
5.working interface became obvious to accept or cancel.
6.strengthen the bouncing.
Look forward to more evaluation!