why the jump doesn't works?

Questions & Answers
1

I’m trying to make a simple jump, but it’s not working at all, for some reason the IsGrounded() is not working, it keeps with the infinite jump.

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

public class Move_incremented : MonoBehaviour
{
    [SerializeField] private LayerMask LayerMask;
    Rigidbody2D rb;
    BoxCollider2D box2d;
    float speed = 10.0f;
    float jump = 7f;
    float dir_horz;
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        box2d = GetComponent<BoxCollider2D>();
    }
    void FixedUpdate()
    {
        Move();
        Jump();    
    }
    void Move()
    {
        //movimentação
        dir_horz = Input.GetAxis("Horizontal");
        rb.velocity = new Vector2 (speed * dir_horz, rb.velocity.y); 
        
        //flip
        if(dir_horz > 0.01f)
        {
            transform.localScale = new Vector3(5, 5, 1);
        }
        else if(dir_horz < -0.01f)
        {
            transform.localScale = new Vector3(-5, 5, 1);
        }
    }
    void Jump()
    {
        //pulo
        if (IsGrounded() && Input.GetKey(KeyCode.Space))
        {
            rb.velocity = new Vector2 (rb.velocity.x, jump);            
        }
        //pulo duplo
    }
    bool IsGrounded()
    {
        RaycastHit2D raycastHit2d = Physics2D.BoxCast(box2d.bounds.center, box2d.bounds.size, 0f, Vector2.down * .1f, LayerMask);
        return raycastHit2d.collider != null;
    }
}

Please, help me.

2

Hello, inside your IsGrounded method you are multiplying Vector2.down by .1f. This is what’s causing your infinite jump.
There needs to be a comma between Vector2.down & .1f.