"Eli Ford"
Is there a better way than IORefs
Without looking at the code: The state Monad. Imperative implementations of games are usually[1] modelled as finite automata, there's no reason to do it any different in a functional language. Add a bit of glue to translate input events into input symbols and output symbols into graphics, sound and general joyful multimedia goodness and some strings to tell your automata that it's supposed to switch to a new state each frame and you're set. [1] That is, I know of no counterexamples, except broken automata where clueless code monkeys update the game state while drawing onto the screen and similar atrocities. -- (c) this sig last receiving data processing entity. Inspect headers for copyright history. All rights reserved. Copying, hiring, renting, performance and/or quoting of this signature prohibited.