Input.GetAxis

Description

Returns the value of the virtual axis identified by axisName.

The value will be in the range -1...1 for keyboard and joystick input. If the axis is setup to be delta mouse movement, the mouse delta is multiplied by the axis sensitivity and the range is not -1...1.

This is frame-rate independent; you do not need to be concerned about varying frame-rates when using this value.

// A very simplistic car driving on the x-z plane.

var speed : float = 10.0;
var rotationSpeed : float = 100.0;

function Update () {
    // Get the horizontal and vertical axis.
    // By default they are mapped to the arrow keys.
    // The value is in the range -1 to 1
    var translation : float = Input.GetAxis ("Vertical") * speed;
    var rotation : float = Input.GetAxis ("Horizontal") * rotationSpeed;

    // Make it move 10 meters per second instead of 10 meters per frame...
    translation *= Time.deltaTime;
    rotation *= Time.deltaTime;

    // Move translation along the object's z-axis
    transform.Translate (0, 0, translation);
    // Rotate around our y-axis
    transform.Rotate (0, rotation, 0);
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public float speed = 10.0F;
    public float rotationSpeed = 100.0F;
    void Update() {
        float translation = Input.GetAxis("Vertical") * speed;
        float rotation = Input.GetAxis("Horizontal") * rotationSpeed;
        translation *= Time.deltaTime;
        rotation *= Time.deltaTime;
        transform.Translate(0, 0, translation);
        transform.Rotate(0, rotation, 0);
    }
}

// Performs a mouse look.

var horizontalSpeed : float = 2.0;
var verticalSpeed : float = 2.0;
function Update () {
    // Get the mouse delta. This is not in the range -1...1
    var h : float = horizontalSpeed * Input.GetAxis ("Mouse X");
    var v : float = verticalSpeed * Input.GetAxis ("Mouse Y");
    transform.Rotate (v, h, 0);
}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public float horizontalSpeed = 2.0F;
    public float verticalSpeed = 2.0F;
    void Update() {
        float h = horizontalSpeed * Input.GetAxis("Mouse X");
        float v = verticalSpeed * Input.GetAxis("Mouse Y");
        transform.Rotate(v, h, 0);
    }
}