Study on Action Control of Virtual Actors

This article presents a controlling hierarchy over the action of a virtual actor including run-time control, path point control, destination point control and script language control. The path point control realizes the actor animation via setting the path points in virtual environments and selecting actions at those points. The destination point control employs global path planning to disseminate virtual environments by a navigation controller of an action hierarchy, then uses the A*-algorithm to traverse for optimal path and a dynamic obstacle avoidance algorithm for local path planning to guide the actions of actors in virtual environments. The script language control drives the dynamic, real-time and intelligent control over virtual actor behaviors through a representation method based on linear temporal logic.