Add sprint Key

Questions & Answers
1

I want to add a sprint key while you hold Lshift you sprint and when you let go you stop sprinting.
I tried with this script and the player will sprint but after you let go of Lshift it will keep the speed at 10.
using UnityEngine;
using System.Collections;

public class PlayerMove : MonoBehaviour {
public float speed = 5f;

void FixedUpdate () {

	float d = Input.GetAxis ("Horizontal");
	float w = Input.GetAxis ("Vertical");

	Vector3 moveVector = (transform.forward * w) + (transform.right * d);
	moveVector *= speed * Time.deltaTime;

	transform.localPosition += moveVector;

	if (Input.GetKey (KeyCode.LeftShift)) {
		speed = 10f;

		else{
			speed = 5f;
		}
	}
}

}

2

Hello! Not sure if you copy pasted your code, but there’s a bracket missing just before the else, which might be the problem.

Also I’d recommend using the Input.GetButton() function instead of GetKey(), since it allows for a more flexible key input. I don’t know, maybe you have your reasons for using GetKey().

3

public class PersController : MonoBehaviour
{
public float
speed,speedUsePerc,speedMax,sprint,stamina,dash,dashUse,dashKd,sprintUse,staminaKd,staminaRegen,staminaMax;

private float staminaT = 0,dashT = 0,staminaPercUp,speedPercE;
public Rigidbody rb;

private bool kdStaminaT = false;
private bool kdDashT = false;
float camRayLength = 100;
int floorMask; 

public GUIText StaminaH;
public GUIText StaminaKD;

void Awake ()
{
	floorMask = LayerMask.GetMask ("Floor");
}

void Start ()
{
	rb = GetComponent<Rigidbody> ();
}

void Update()
{
	Move ();
	StaminaH.text = "Stamina " + stamina;
	StaminaKD.text = "" + staminaT;
	speed = Mathf.Clamp (speed, 0, speedMax);
}

void FixedUpdate()
{
	Turning ();
}
	
	void Turning ()
{
	Ray camRay = Camera.main.ScreenPointToRay (Input.mousePosition);
	RaycastHit floorHit;
	if (Physics.Raycast (camRay, out floorHit, camRayLength, floorMask)) 
	{
		Vector3 playerToMouse = floorHit.point - transform.position;
		Quaternion newRotation = Quaternion.LookRotation (playerToMouse);
		rb.MoveRotation (newRotation);
	}
}

void Move()
{
	float moveHorizontal = Input.GetAxis ("Horizontal");
	float moveVertical = Input.GetAxis ("Vertical");

	Vector3 movement = new Vector3 (moveHorizontal,0,moveVertical);

	rb.velocity = movement * speed;

	if (staminaT >= staminaKd) 
	{
		kdStaminaT = false;
		staminaT = 0;
	}
	else if (kdStaminaT == true) 
	{
		staminaT += Time.deltaTime;
	}
	else if(stamina < staminaMax & staminaT >= staminaKd)
	{
		kdStaminaT = true;
	}

	if (dashT >= dashKd) 
	{
		kdDashT = false;
	}

	else if (kdDashT == true) 
	{
		dashT += Time.deltaTime;
	}
		 
	if (stamina < staminaMax & movement == Vector3.zero & kdStaminaT == false) 
	{
		stamina += staminaRegen * Time.deltaTime;
	} 

	else if (stamina < staminaMax & movement != Vector3.zero & kdStaminaT == false) 
	{
		stamina += staminaRegen / 2 * Time.deltaTime;
	} 

	else if (speed > speedMax)
	{
		speed = speedMax;
	}

	else if (stamina > staminaMax) 
	{
		stamina = staminaMax;
	}

	if (Input.GetKey (KeyCode.LeftShift) & stamina > 0 & movement != Vector3.zero) 
	{
		rb.velocity = movement * sprint;
		stamina -= sprintUse * Time.deltaTime;
		kdStaminaT = true;
		staminaT = 0;
	}

	if (Input.GetKeyDown (KeyCode.Space) & stamina > 0 & kdDashT == false)
	{
		rb.AddForce(movement * dash,ForceMode.Impulse);
		stamina -= dashUse;
		kdDashT = true;
		dashT = 0;
	}

	if (Input.GetKey (KeyCode.LeftShift) & Input.GetKeyDown (KeyCode.Space) & stamina > 0 & kdDashT == false) 
	{
		rb.AddForce(movement * (dash + speed),ForceMode.Impulse);
		stamina -= dashUse * 0.5f;
		kdDashT = true;
		dashT = 0;
	}
}

}

First line where all float values dont wont add in the code(
That script for a player, them have a sprint,dash,stamina,MOAR timers for cooldowns,stamina regenerate and MOAR MOAR MOAR.
Sorry for my clumsy english and i hope that will help you.)))