NPC NavMeshAgent to follow the waypoints in a sequence
Waypoints are often used as a guide to make autonomously moving NPCs and enemies follow a path in a general way (but be able to respond with other directional behaviors, such as flee or seek, if friends/predators/prey are sensed nearby). The waypoints are arranged in a sequence, so that when the character reaches, or gets close to a waypoint, it will then select the next waypoint in the sequence as the target location to move towards. This recipe demonstrates an arrow object moving towards a waypoint, and then, when it gets close enough, it will choose the next waypoint in the sequence as the new target destination. When the last waypoint has been reached, it again starts heading towards the first waypoint.
Since Unity's NavMeshAgent has simplified coding NPC behavior, our work in this recipe becomes basically finding the position of the next waypoint, and then telling the NavMeshAgent that this waypoint is its new destination.
