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Input.GetAxisRaw

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public static function GetAxisRaw(axisName: string): float;
public static float GetAxisRaw(string axisName);

Description

Returns the value of the virtual axis identified by axisName with no smoothing filtering applied.

The value will be in the range -1...1 for keyboard and joystick input. Since input is not smoothed, keyboard input will always be either -1, 0 or 1. This is useful if you want to do all smoothing of keyboard input processing yourself.

    function Update () {
        var speed : float = Input.GetAxisRaw("Horizontal") * Time.deltaTime;
        transform.Rotate (0, speed, 0);    
    }
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { void Update() { float speed = Input.GetAxisRaw("Horizontal") * Time.deltaTime; transform.Rotate(0, speed, 0); } }