NDLI: Implementation of a scripting language for VRML/X3D-based embodied agents

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Implementation of a scripting language for VRML/X3D-based embodied agents

Content Provider	ACM Digital Library
Author	Huang, Zhisheng Visser, Cees Eliëns, Anton
Abstract	Embodied agents or humanoid avatars may effectively be used to communicate with human users. Currently there is a wide range of specification formalisms and scripting languages for embodied agents, many of which are of a somewhat ad hoc nature lacking clear semantics. In this paper, we discuss the implementation of a scripting language for humanoid avatars in VRML/X3D-based environments. The scripting language STEP is based on dynamic logic, which provides a clear semantics for complex behavioral patterns. Moreover, the implementation of STEP is realized in a platform that extends VRML/X3D with distributed logic programming (DLP), which provides the computational support necessary to realize such complex behavioral patterns as well as the interaction with a (rich media) 3D environment. As an application example, we will discuss the development of an instructional VR for Tai Chi (the Chinese art of movement), illustrating how our approach allows for the creation of reusable libraries of behavioral patterns. We will discuss some implementation issues, in particular how to realize parallel actions and synchronization within an environment.
Starting Page	91
Ending Page	100
Page Count	10
File Format	PDF
ISBN	1581136447
DOI	10.1145/636593.636608
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2003-03-09
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Vrml/x3d H-anim Distributed logic programming Agents Xstep Step
Content Type	Text
Resource Type	Article

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