In this paper, we describe the use of an agent-based simulation language, JACK Sim. JACK Sim is one of several add-ons for the agent language JACK, which is based on the belief-desire-intention architecture. The implementation of a prototype model of pedestrian wayfinding behaviour is described and the prototype is then evaluated using software engineering quality principles. A recent addition to the simulation language world, JACK Sim solves several problems encountered with using JACK alone for certain simulations andprovides a solid framework for creating discrete-event simulations with BDI agent technology.