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AI Game Programming Wisdom 4 by Steve Rabin

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4.3Command Hierarchies Using Goal-Oriented Action Planning

David Pittman—Stormfront Studios, Inc.

david.pittman@gmail.com

Many games feature characters whose behaviors must be coordinated with the actions of other characters to create a believable facsimile of human interaction. For example, tactical squad-based shooters might require the members of a squad to work together to achieve common goals, such as resolving a hostage situation or destroying an enemy blockade. Goal-directed behavior is a practical choice for games with these kinds of scenarios [Atkin05], but how should the individual tasks be coordinated with the common objectives of the team?

This article describes the use of military-style command hierarchies in conjunction with the ...

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