Implementing steering behaviors

The strategies that we will cover here have been taken from Craig Reynolds's paper Steering Behaviors for Autonomous Characters, written in 1999. It has become a well-known reference for implementing autonomous motion in an easy manner for non-playable characters.

You can check out the online version at In this section, you will learn how to implement the following kinds of behavior:

  • Seek and flee
  • Arrival
  • Pursuit and evade
  • Wander
  • Obstacle avoidance

Seek and flee

The seek behavior moves the character towards a specific position in the space. This behavior is based on the combination of two forces: the character's velocity and the steering force. This force is calculated as the difference ...

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