player

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

public class Player : MonoBehaviour
{
    Rigidbody2D rb;
    public float speed;
    public float jumpHeight;
    public Transform groundCheck;
    bool isGrounded;
    Animator anim;
    // Start is called before the first frame update
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        anim = GetComponent<Animator>();
    }

    // Update is called once per frame
    void Update()
    {

        CheckGround();
        if (Input.GetAxis("Horizontal") == 0 && ( isGrounded))
        {
            anim.SetInteger("State",1);
        } else
        {
            Flip();
            if (isGrounded)
                anim.SetInteger("State", 2);
        }
    }

    void FixedUpdate()
    {
        rb.velocity = new Vector2(Input.GetAxis("Horizontal") * speed, rb.velocity.y);
        if (Input.GetKeyDown(KeyCode.Space) && isGrounded)
            rb.AddForce(transform.up * jumpHeight, ForceMode2D.Impulse);

    }

    void Flip()
    {
        if (Input.GetAxis("Horizontal") > 0)
            transform.localRotation = Quaternion.Euler(0, 0, 0);
        if (Input.GetAxis("Horizontal") < 0)
            transform.localRotation = Quaternion.Euler(0, 180, 0);

    }
    void CheckGround()
    {
        Collider2D[] colliders = Physics2D.OverlapCircleAll(groundCheck.position, 0.2f);
        isGrounded = colliders.Length > 1;
        if (!isGrounded)
            anim.SetInteger("State", 3);
    }
}