2d look at unity
//Look at 2D job using the unity jobs system
struct LookAtJob : IJobParallelForTransform
{
public NativeArray<Vector2> targetPositions;
public void Execute(int index, TransformAccess transform)
{
Vector2 dir = targetPositions[index] - (Vector2)transform.position;
float angle = math.degrees(math.atan2(dir.y, dir.x));
transform.rotation = Quaternion.AngleAxis(angle, Vector3.forward);
}
}