Boids Model

Introduced by

• Craig Reynolds. Flocks, Herds, and Schools: A Distributed Behavioral Model, SIGGRAPH 1987
• Craig Reynolds. Steering Behaviors For Autonomous Characters. Proceedings of Game Developers, 1999

A boid is defined by its

• - Position
• - Speed
• - Forces acting on it

Three basic local steering behaviors to model flocks

• - Cohesion between local particles
• - Alignment between local particles
• - Separation between too close particles

• => Leads to emerging global behaviors.