A functional reactive animation of a lift using Fran

Abstract

This paper uses the Fran system for functional reactive animation to give a simulation of a lift – or elevator – with many floors. The paper first introduces a two-floor version, and then indicates in detail how this is extended to give a simulation with an arbitrary number of floors and featuring more realistic animated graphics. The paper introduces those aspects of Fran relevant to the simulation, making it a self-contained tutorial on parts of Fran and how it is applied in practice. The full code for the system is available on the World Wide Web.