Please, can anyone explain this (input.acceleration)

[Databases]

Hi, everyone

can anyone please explain the following code:

using UnityEngine;

using System.Collections;

public class ExampleClass : MonoBehaviour {

public float speed = 10.0F;
void Update() {
    Vector3 dir = Vector3.zero;
    dir.x = -Input.acceleration.y;
    dir.z = Input.acceleration.x;
    if (dir.sqrMagnitude > 1)
        dir.Normalize();
    
    dir *= Time.deltaTime;
    transform.Translate(dir * speed);
}

}

I want an explanation because it did work but not properly when i tried it in my game, so understanding may help me understand what is the issue.

Thank you all for your time.

Source: Unity - Scripting API: Input.acceleration

[tanoshimi]

With comments…

// Assume that device is held parallel to the ground 
// and Home button is in the right hand 
// remap device acceleration axis to game coordinates: 
// 1) XY plane of the device is mapped onto XZ plane 
// 2) rotated 90 degrees around Y axis
dir.x = -Input.acceleration.y; 
dir.z = Input.acceleration.x;

// Clamp acceleration vector to unit sphere 
if (dir.sqrMagnitude > 1)
  dir.Normalize(); 

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

// Move object
transform.Translate (dir * speed);

[Lovelock]

I believe Input.acceleration returns data from anything using an accelerometer. That is, an input device moving through 3D space in real-life that can report that info to Unity. Something like a phone with an accelerometer or any other peripherals that have one.

What exactly are you wanting to do with this code?

It won’t necessarily do anything if you don’t have the proper inputs, or if it’s not running on a device with an accelerometer.

If you want basic input for keyboard / gamepad, try

float xInput = Input.GetAxis("Horizontal");
float yInput = Input.GetAxis("Vertical");

[semaj678]

I have just recently discovered how to do this. The code is wrong. transform.Translate for me at least doesn’t work. Use: GetCompenent().AddForce(dir); Please let me know if this has helped.