playermovement

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

public class PlayerController2D : MonoBehaviour
{

    Animator animator;
    Rigidbody2D rb2d;
    SpriteRenderer spriteRenderer;

    bool isGrounded;

    [SerializeField]
    Transform groundCheck;

    [SerializeField]
    Transform groundCheckL;

    [SerializeField]
    Transform groundCheckR;

    [SerializeField]
    private float runSpeed = 1.5f;

    [SerializeField]
    private float jumpSpeed = 5f;

    // slopes

    // Start is called before the first frame update
    void Start()
    {

        animator = GetComponent<Animator>();
        rb2d = GetComponent<Rigidbody2D>();
        spriteRenderer = GetComponent<SpriteRenderer>();


    }

    private void FixedUpdate()
    {
        if ((Physics2D.Linecast(transform.position, groundCheck.position, 1 << LayerMask.NameToLayer("Ground"))) ||
           (Physics2D.Linecast(transform.position, groundCheckL.position, 1 << LayerMask.NameToLayer("Ground"))) ||
           (Physics2D.Linecast(transform.position, groundCheckR.position, 1 << LayerMask.NameToLayer("Ground"))))
        {
            isGrounded = true;
        }
        else
        {
            isGrounded = false;
            animator.Play("Player_jump");
        }

        if (Input.GetKey("d") || Input.GetKey("right"))
        {
            rb2d.velocity = new Vector2(runSpeed, rb2d.velocity.y);
            if (isGrounded)
                animator.Play("Player_run");

            spriteRenderer.flipX = false;
        }
        else if (Input.GetKey("a") || Input.GetKey("left"))
        {
            rb2d.velocity = new Vector2(-runSpeed, rb2d.velocity.y);
            if (isGrounded)
                animator.Play("Player_run");
            spriteRenderer.flipX = true;
        }
        else
        {
            if (isGrounded)
                animator.Play("Player_idle");
            rb2d.velocity = new Vector2(0, rb2d.velocity.y);
        }

        if (Input.GetKey("space") && isGrounded)
        {

            rb2d.velocity = new Vector2(rb2d.velocity.x, jumpSpeed);
            animator.Play("Player_jump");

        }
    }
}