Paolo Amoroso • 6/5/2026

Representing the universe of GravityLoops

This article details the author's work on the Universe class for GravityLoops, a gravity simulator built using Interlisp and LOOPS. It covers the definition of the class and its main methods, Universe.Register and Universe.Simulate. The author explains how the bodyPool instance variable uses a list instead of an array, inspired by a C++ design, and discusses plans for expanding Universe.Simulate to handle simulation updates, graphical display, and user interruption. The article also touches on potential redesigns using LOOPS' active values.

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#c #Loop #Interlisp