Hi, I’m doing a little asteroids game, and I’m trying to set a sprint function to my ship. That seems pretty easy using the input manager and setting a button hold, however, I don´t know how to check if the button was released in order to restore the ship’s speed.
I would appreciate a lot your help 
using UnityEngine;
using UnityEngine.InputSystem;
//asociates the script with the player object
// Ensures that the GameObject this script is attached to has a Rigidbody component
[RequireComponent(typeof(Rigidbody))]
public class NewMonoBehaviourScript : MonoBehaviour
{
//Ship Movement parameters
[Header("Ship Movement parameters")] [Tooltip("The velocity of the ship")]
private Rigidbody playerRigidbody;
private Vector3 shipMovementDirection = Vector3.zero;
[SerializeField] private float shipSpeed = 3f * 100;
[SerializeField] private float shipRotationSpeed = 200f;
private float originalShipSpeed;
private Quaternion shipRotation;
//Fire parameters
[Header("Fire parameters")] [SerializeField]
private GameObject bulletPrefab;
[SerializeField] private Transform bulletSpawnPoint;
//Sprint parameters
[Header("Sprint parameters")] [SerializeField]
private float sprintEnergy = 100f;
//Camera parameters
[Header("Camera parameters")] [Tooltip("The camera settings")]
private Camera mainCamera;
void Start()
{
//gets the rigidbody component from the player object
playerRigidbody = GetComponent<Rigidbody>();
//disables gravity and rotation on the rigidbody
playerRigidbody.useGravity = false;
playerRigidbody.constraints = RigidbodyConstraints.FreezeRotationZ | RigidbodyConstraints.FreezeRotationX |
RigidbodyConstraints.FreezePositionY;
//gets the main camera
mainCamera = Camera.main;
//GameObject.FindGameObjectWithTag("MainCamera").GetComponent<Camera>(); //this is a slower way to get the main camera
originalShipSpeed = shipSpeed;
}
//Physhics
private void FixedUpdate()
{
//moves the ship in the direction of the input at a constant speed
playerRigidbody.linearVelocity = shipMovementDirection * (shipSpeed * Time.fixedDeltaTime);
//rotates the ship to face the mouse
//TODO: try using lerp to make the rotation smoother
playerRigidbody.rotation = Quaternion.RotateTowards(playerRigidbody.rotation, shipRotation,
shipRotationSpeed * Time.fixedDeltaTime);
}
public void OnMove(InputValue inputValue)
{
//recieves an input in 2 dimensions
Vector2 vectorInput = inputValue.Get<Vector2>();
//as the ship moves in 3 dimensions, we only want to move in the x and z axis (y is up and down)
shipMovementDirection = new Vector3(vectorInput.x, 0f, vectorInput.y);
//normalizes the vector to ensure that the ship moves at the same speed in all directions
shipMovementDirection = shipMovementDirection.normalized;
}
public void OnFire(InputValue inputValue)
{
SpawnPool.Instance.Spawn(bulletPrefab.transform, bulletSpawnPoint.position, bulletSpawnPoint.rotation);
//creates a bullet at the bullet spawn point with the same rotation as the ship
//Instantiate(bulletPrefab, bulletSpawnPoint.position, bulletSpawnPoint.rotation);
}
public void OnLook(InputValue inputValue)
{
Vector2 mousePosition = inputValue.Get<Vector2>();
//converts the mouse position to a world position based on the camera position and the distance from the camera to the ship
float zCoord = mainCamera.transform.position.y - playerRigidbody.position.y;
Vector3 worldMousePosition =
mainCamera.ScreenToWorldPoint(new Vector3(mousePosition.x, mousePosition.y, zCoord));
//gets the direction the ship should face
Vector3 shipForward = worldMousePosition - transform.position;
//sets the y value to 0 to ensure the ship doesn't rotate up or down
shipForward.y = 0f;
//sets the rotation of the ship to face the mouse
shipRotation = Quaternion.LookRotation(shipForward);
}
public void OnSprint(InputValue inputValue)
{
if (inputValue.isPressed)
{
shipSpeed += shipSpeed * 0.3f;
}
else RestoreShipSpeed();
}
private void RestoreShipSpeed()
{
shipSpeed = originalShipSpeed;
}
}
