Abstract Virtual characters are widely used in e-education, cartoon games and e-commerce. However, the current emotion design for virtual characters is still in a handwork stage and needs a large amount of manpower. The behaviors of most virtual characters are simple and unbelievable. Based on psychology theory and ortony, clore, collins (OCC) model, the architecture of a virtual character is presented and a formalization of a virtual characters motivation is proposed. A virtual characters emotion state is driven by a set of fuzzy productive rules for emotion decision. Emotion intensities are calculated by a fuzzy inference system. The experimental result shows that the emotion model enhances the efficacy of friend interfaces for education software,and makes a virtual character behave more humanlike.
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2011, Vol. 24 
