Agent Set Destination ZigZag

Question

Update:

  Vector3 movementPos = new Vector3(ZigZagDirStrafe().x * strafeMagnitude, transform.position.y, transform.position.z + Random.Range(-1, 2) * forwardMagnitude);
             agent.SetDestination(movementPos);

Vector3 ZigZagStrafe:

  var t = Mathf.Sign(Mathf.Repeat(randomZigzagTime + (Time.realtimeSinceStartup * 10) / (1000 * zigZagTime), 2.0f) - 1);
             var side_wec = transform.right * t;
             return (agent.velocity + side_wec).normalized;

The problem is that agent is moving along global X axis and is not strafing right or left locally(according to it's forward). How would I do set destination towards local axis?

Answer 1

 [SerializeField]
 private Transfrom agentTransform;
  
 // it's better to use separate delta's instead of sharing Time.realtimeSinceStartup
 // because you can easily end up with a bunch of enemies oscillating in the same motion
 private float zigZagDelta;
  
 private float zigZagDistance;
  
 Vector3 ZigZagStrafe()
 {
    // using sinus to generate zigzag between -1 and 1 , multiplying with some magnitude
    float t = Mathf.Sin(zigZagDelta) * zigZagDistance;
    // this is in local space
    Vector3 zigZagDisplacementLocal = Vector3.right * t;
    // this is now in world space
    Vector3 zigZagDisplacementWorld = agentTransform.TransfromDirection(zigZagDisplacementLocal);
  
    return zigZagDisplacementWorld;
 }
  
 void Update()
 {
   zigZagDelta += Time.deltaTime;
  
   Vector3 movementPos = // put the normal movementPos here;
   movementPos += ZigZagStrafe(); // add the offset from the zigzag
  
   agent.SetDestination(movementPos);
 }

Agent Set Destination ZigZag

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