SinWaveMove.cs

// SinWaveMove.cs
// Last edited 9:42 PM 04/21/2015 by Aaron Freedman

using UnityEngine;

namespace Assets.PrototypingKit
{
    public class SinWaveMove : MonoBehaviour
    {
        public enum MoveDirection
        {
            x,
            y,
            z
        };

        public MoveDirection moveDirection;
        public float moveAmount;
        public float moveSpeed;
        public float lerpSpeed;
        private Vector3 originalPos;

        private void Start()
        {
            originalPos = transform.position;
        }

        private void Update()
        {
            Vector3 targetPosition = Vector3.zero;

            switch (moveDirection)
            {
                case MoveDirection.x:
                    targetPosition = new Vector3((Mathf.Sin(Time.time * moveSpeed) * moveAmount) + originalPos.x, originalPos.y, originalPos.z);
                    break;
                case MoveDirection.y:
                    targetPosition = new Vector3(originalPos.x, (Mathf.Sin(Time.time * moveSpeed) * moveAmount) + originalPos.y, originalPos.z);
                    break;
                case MoveDirection.z:
                    targetPosition = new Vector3(originalPos.x, originalPos.y, (Mathf.Sin(Time.time * moveSpeed) * moveAmount) + originalPos.z);
                    break;
                default:
                    break;
            }

            transform.position = Vector3.Lerp(transform.position, targetPosition, lerpSpeed * Time.deltaTime);
        }
    }
}