Sprint Functionality Not Working

Unity Engine
,
1

I’m trying to get my player to run when I press the left shift down, but no matter how I try and modify the code, it only ever moves according to walkSpeed and never to sprintSpeed even though I know that the velocity is being set to sprintSpeed when I press left shift down. Any help would be appreciated.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class CharacterController : MonoBehaviour
{
    //8 direction character controller
    //https://www.youtube.com/watch?v=cVy-NTjqZR8

    float velocity = 5;
    public float turnSpeed;
    public float walkSpeed;
    public float sprintSpeed;
    public bool isSprinting;

    Animator anim;

    Vector2 playerInput;
    float angle; //to know how to rotate player

    Quaternion targetRotation; //quaternion used to represent rotations
    Transform cam; // to keep track of camera angles

    // Start is called before the first frame update
    void Start()
    {
        cam = Camera.main.transform; //this accesses the main camera
        anim = GetComponent<Animator>();

    }

    // Update is called once per frame
    void Update()
    {
        GetInput();//get input every frame, so the thing stops when
        if (Mathf.Abs(playerInput.x) < 1 && Mathf.Abs(playerInput.y) < 1)
        { //this stops the character from moving when no input
            anim.SetInteger("condition", 0);

            return;
        }

        else
        {
            anim.SetInteger("condition", 1);
        }

        CalculateDirection();
        Rotate();
        if (Input.GetKeyDown(KeyCode.LeftShift))
        {
            isSprinting = true;
        }

        else
        {
            isSprinting = false;
        }
        Move();


    }


    void GetInput()
    {
        playerInput.x = Input.GetAxisRaw("Horizontal");
        playerInput.y = Input.GetAxisRaw("Vertical");
    }

    void CalculateDirection()
    {
        angle = Mathf.Atan2(playerInput.x, playerInput.y); //give us radians, tangent between up and horizontal
        angle = Mathf.Rad2Deg * angle; // to convert to degrees
        angle += cam.eulerAngles.y;
    }

    void Rotate()
    {
        targetRotation = Quaternion.Euler(0, angle, 0); // convert euler angles to quaternions
        transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, turnSpeed * Time.deltaTime);
    }

    void Move()
    {
        if(isSprinting == true)
        {
            velocity = sprintSpeed;
            Debug.Log("debug: " + sprintSpeed + "velocity: " + velocity);

        }

        else
        {
            velocity = walkSpeed;
        }

        Debug.Log("debug velocity: " + velocity);

        anim.SetFloat("velocity", velocity / 10);

        transform.position += transform.forward * walkSpeed * Time.deltaTime;

    }


}
2 
Input.GetKeyDown(KeyCode.LeftShift)

This will return true only during the exact frame when the user first presses the key down. It will return false in all other frames, so you are likely only getting one frame of sprinting, then back to walking. Try this instead:Input.GetKey(KeyCode.LeftShift)

More info:

1 Like
3

Thanks so much that worked perfectly!

4

I also noticed on line 102 you are always using walkSpeed:transform.position += transform.forward * walkSpeed * Time.deltaTime; Did you mean this: transform.position += transform.forward * velocity * Time.deltaTime;