Mathf.PingPong

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public static function PingPong(t: float, length: float): float;

public static float PingPong(float t, float length);

public static def PingPong(t as float, length as float) as float

Description

PingPongs the value t, so that it is never larger than length and never smaller than 0.

The returned value will move back and forth between 0 and length.

	function Update () {
		// Set the x position to loop between 0 and 3
		transform.position = Vector3(
				     Mathf.PingPong(Time.time, 3), transform.position.y, transform.position.z);
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void Update() {
        transform.position = new Vector3(Mathf.PingPong(Time.time, 3), transform.position.y, transform.position.z);
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	def Update() as void:
		transform.position = Vector3(Mathf.PingPong(Time.time, 3), transform.position.y, transform.position.z)