Abstract: Focusing on the selection process of shoal behavior animation (strategy, goal and plan), and using the cognitive modeling approach on behavior selecti on, a new method to build a cognitive model of artificial fish in fish shoal animation is presented. Using a concerted control scheme that combines the high level uncertainty goal directed behavior and lower-level predefined behavior, and with the warrant of behavior selection based on goal priority, the behavior planning is established. Simulations results show that this method can make artificial fish choose required behavior based on outside stimulate and inside state, and achieve quite natural characteristics of real fish.

Key words: behavior planning, cognitive character, artificial fish