hey guys , i watched a tutorial of fps controller by Brackeys ,my character can jump infinitely , how do i stop it?,

Questions & Answers
1

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);

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

    velocity.y += gravity * Time.deltaTime;

    controller.Move(velocity * Time.deltaTime);
}

}

2

there is no problem in the code, make sure, you set groundCheck, groundDistance and groundmask variables properly.