Abstract
In this study we have developed a notation of game scene based on the protocol definition. The purpose is to improve the productivity of the game development by separating the description of behavior selection of NPC (Non-Player-Character) from a game scenario. NPC, the autonomous character to act in the game, is not operated by the player. In battle scene of the game, each NPC has one of the states in five. The states are "Default," "Request-Action," "Send-Information," "Reflect-Value" and "Get-Information". NPC do the state transition by the "action selection". The action is selected by the motivation of the organic emotion based model.. The motivation is updated by the messaging between NPCs. Thus, each NPC repeat the state transition by biological relationships with other NPCs, and their autonomous behavior is generated.
