jetpack: breal when no button is pressed?

Questions & Answers
1

hey, i did this pretty simple jetpack script:

using UnityEngine;
using System.Collections;


public class Jetpack : MonoBehaviour 
{
	public float upthrust;
	public float forwardthrust;
	public Rigidbody rb;



	void FixedUpdate() 
	{
		if  (Input.GetKey(KeyCode.UpArrow)){
			
			rb.AddForce(transform.forward * forwardthrust);

		}

		if  (Input.GetKey(KeyCode.DownArrow)){

			rb.AddForce(transform.forward * -forwardthrust);

		}

		if  (Input.GetKey(KeyCode.RightShift)){
			rb.AddForce(transform.up * upthrust);


		}
		if  (Input.GetKey(KeyCode.RightControl)){
			rb.AddForce(transform.up * -upthrust);
		

		}

		if  (Input.GetKey(KeyCode.LeftArrow)){
			rb.AddForce(transform.right * -upthrust);


		}

		if  (Input.GetKey(KeyCode.RightArrow)){
			rb.AddForce(transform.right * upthrust);


		}

	}
}

but what i wanna add now (which i don’t know how to do this) is, that the jetpack slowly stops when i dont press any button. cause at the moment is just keeps floating around/accelarates

2

The easiest way to decrease the velocity of a rigidbody is to increase its drag. So just do something like this in FixedUpdate():

     if (!Input.anyKey) rb.drag=20;
     if (Input.anyKey) rb.drag=0;

Note I just used an arbitrary value for the drag. You have to figure out which one suits you best.