loading...
 This Article 
   
 Share 
   
 Bibliographic References 
   
 Add to: 
 
Digg
Furl
Spurl
Blink
Simpy
Google
Del.icio.us
Y!MyWeb
 
 Search 
   
Eighth IEEE International Symposium on Distributed Simulation and Real-Time Applications (DS-RT'04)
Visibility Path-Finding in Relation to Hybrid Strategy-Based Models in Distributed Interactive Applications
Budapest, Hungary
October 21-October 23
ISBN: 0-7695-2232-7
Dermot Madden, University of Ireland
Declan Delaney, University of Ireland
S?amus McLoone, University of Ireland
Tom? Ward, University of Ireland
The hybrid strategy-based modeling approach is a method for reducing the number of network packets that need to be transmitted to maintain global consistency in Distributed Interactive Applications. It combines a short-term model such as dead reckoning with a long-term strategy model. A key aspect of this approach is to determine strategies that users adopt in navigating the simulated environment to satisfy some objective or goal. Computer-generated artificial entities called BOTS, navigate by employing an Artificial Intelligence technique called path finding. This paper proposes using the A* path finding algorithm to automatically compute strategies that human users might take through the simulated environment. Since the A* algorithm operates on a graph representation of the environment and because of the real-time constraints imposed on Distributed Interactive Applications, the paper also carries out a comparative analysis of two extreme graph representations of the environment — a standard regular grid and a minimal grid representation. The comparison shows that the minimal grid leads to an order of magnitude reduction in real-time computation compared to the regular grid. In addition the paths computed using the minimal grid and the A* algorithm are used to determine strategy models as part of the hybrid strategy-based modeling approach. It is shown that this reduces the network traffic required to maintain global consistency of entity dynamics in two simulated environments.
Citation:
Dermot Madden, Declan Delaney, S?amus McLoone, Tom? Ward, "Visibility Path-Finding in Relation to Hybrid Strategy-Based Models in Distributed Interactive Applications," ds-rt, pp.91-97, Eighth IEEE International Symposium on Distributed Simulation and Real-Time Applications (DS-RT'04), 2004
Usage of this product signifies your acceptance of the Terms of Use.