EM-an environment manager for building networked virtual environments

The Environment Manager (EM) is a high-level tool for constructing both single-user and multi-user virtual environments. A script file is used to initialize and run virtual worlds. Independent applications can share information and cooperate with each other across the Internet. EM reduces the effort required to produce a networked virtual world by providing high-level support for application replication, network configuration, communication management and concurrency control. This paper describes the architecture and implementation of EM.