Why my player doesnt jump?

Unity Engine
1

Can anyone help me? I made a script for movement and in it i made one for jumping but it seems not to work and i dont know why! Here is my code:

Oh and i also attached a file if you want to open it yourself.

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

public class PlayerMovement : MonoBehaviour
{

public CharacterController controller;

public float speed = 12f;
public float gravity = -9.81f;
public float jumpHeight = 3f;

public Transform groundCheck;
public float groundDistance = 0.4f;
public LayerMask groundMask;

Vector3 velocity;
bool isGrounded;

// Update is called once per frame
void Update()
{
isGrounded = Physics.CheckSphere(groundCheck.position, groundDistance, groundMask);

if(isGrounded && velocity.y < 0)
{
velocity.y = -2f;
}

float x = Input.GetAxis(“Horizontal”);
float z = Input.GetAxis(“Vertical”);

Vector3 move = transform.right * x + transform.forward * z;

controller.Move(move * speed * Time.deltaTime);

velocity.y += gravity * Time.deltaTime;

controller.Move(velocity * Time.deltaTime);

if (Input.GetButtonDown(“Jump”) && isGrounded)
{
velocity.y = Mathf.Sqrt(jumpHeight * -2f * gravity);
}
}
}

5377572–544620–PlayerMovement.cs (1.16 KB)

2

watch the tutorial that brackeys typa guy made.You have the exact code