Unity 2018 Cookbook - Third Edition

Controlling object group movement through flocking

A realistic, natural-looking flocking behavior (for example birds, antelope, or bats) can be created through creating collections of objects with the following four simple rules:

• Separation: Avoid getting too close to neighbors
• Avoid obstacles: Turn away from an obstacle immediately ahead
• Alignment: Move in the general direction the flock is heading
• Cohesion: Move towards a location in the middle of the flock

Each member of the flock acts independently, but needs to know about the current heading and location of the members of its flock. This recipe shows you how to create a scene with two flocks of cubes: one flock of green cubes and one flock of yellow cubes.

To keep things simple, we'll ...