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RC++: a rule-based language for game AI

Ian Wright, James Marshall, RC++: a rule-based language for game AI. Proceedings of the First International Conference on Intelligent Games and Simulation (GAME-ON 2000). November 2000. PDF, 113 Kbytes.

Abstract

"Game AI" is the high-level control code for computer entertainment applications. Games are diverse, and the nature of game AI reflects this diversity. However, game AI, in contrast to rendering code and other game code, is distinguished by employing a high density of predicates on rapidly changing game state, and a high density of operations that change game state. Traditional programming languages, such as C and C++, are not designed to facilitate the creation of such code, unlike high-level AI rule-based languages. RC++, a full-featured, rule-based extension to C++, designed for Sony Computer Entertainmentys PlayStation2 hardware, is described. RC++ is based on OPS5 (Forgy, 81) and Poprulebase1, a rule-based extension to the Pop-11 programming language. It combines optimised execution associated with OPS5 with the syntactical style and some of the useful features of Poprulebase. It is designed to facilitate the rapid creation of game AI by automating many of the common programming tasks associated with creating game rules, while maintaining the flexibility of C and C++ when required. The aim of the paper is to demonstrate the applicability of rule-based programming to game AI in general, and the usefulness of RC++ for game AI in particular.

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