Through the use of this controller,the simulation acts in correspondence with the desired motion,moving toward the end body posture over the course of the transition gap and making the character more lifelike However, timing is critical to make the character’s action appear realistic. To control the time before the character begins its active response to the impact, we introduce a deliberate delay before changing the desired values to match the transition-to clip. With a small or no delay,the character appears to be anticipating the contact and with a large one, the character responds more slowly, as if stunned. With the proper delay time (0.1-0.2 s, which falls in the range of real human response delays), we found that the character’s response to the interaction became much more believable. Since the controller acts while the impactis happening,our system creates both active and passive dynamic response simultaneously.