Development of Non-Player Character for 3D Kart Racing Game Using Decision Tree

Racing game is one of the genre that’s still popular today. Unity many engines can use to develop a racing game. At Asset Store, there free template called Micro-Game Karting which only be played alone. In order play player versus enemy mode, an artificial intelligence (AI) needed for directing non-player character (NPC) who acts as opponent. game, AI requires movement algorithm and decision making system. For this study, will pathfinding. The used guiding path when NPC moving avoiding obstacles in way. Pathfinding waypoint system raycasting accomplish it. technique that tree. It functions maker so it determine correct action done at certain time. Result black box white testing showed functional. As FPS (frame per second) test, performance suffers 0.2-0.3 decrease every addition 2 NPCs. According lap time developed faster than ML driving test favorable outcome.