Move GameObject with attached Rigidbody2D between two points

Questions & Answers
1

I am trying to move an object that has a rigidbody 2D attached between two points in space, when the object reaches a point it has to begin moving towards another one. I have been using this code:

void Update () 
	{
		transform.position = Vector2.MoveTowards (transform.position, patrolPoints [pointToReach].transform.position, moveSpeed * Time.deltaTime);

		if (transform.position == patrolPoints[pointToReach].transform.position) 
		{
			if (pointToReach == patrolPoints.Length - 1) 
			{
				pointToReach = 0;
			}
			else
			{
				pointToReach++;
			}
		}
	}

How can I do the same thing by moving the Rigidbody2D? Is there something similar to MoveTowards than I can use?

Thanks in advance

2

You can use MovePosition method on a rigidboy in a FixedUpdate method. However you will have to test if the object arrived to its destination by testing the distance from its current point to the target point:

void Awake() {
     rb = GetComponent<RigidBody2D>();
}

void FixedUpdate() {
       Vector3 dir = patrolPoints[pointToReach].transform.position - rb.position;
       dir.Normalize();

       rb.MovePosition(rb.position + dir * Time.fixedDelta * moveSpeed);

       float sqrMag= (patrolPoints[pointToReach].transform.position - rb.position).sqrMagnitude;

       if (sqrMag > 0.1) { 
           // You have reached your destination
           rb.position = patrolPoints[pointToReach].transform.position;
       }
}

This might not be the best approach but it should get you started. If you find more efficient please share…