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

public class Player : MonoBehaviour
{

    public float speed;
    public float jumpForce;
    public float lowJumpMultiplier = 2f;
    public float fallMultiplier = 2.5f;

    Rigidbody2D rb;
    private Animator anim;
    private SpriteRenderer sr;

    private float moveBy;
    private bool isGrounded = false;
    private bool facingRight = true;

    // Start is called before the first frame update
    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        anim = GetComponent<Animator>();
        sr = GetComponent<SpriteRenderer>();
    }


    // Update is called once per frame
    void Update()
    {
        if (rb.velocity.y < 0)
        {
            rb.velocity += Vector2.up * Physics2D.gravity.y * (fallMultiplier - 1) * Time.deltaTime;
        }
        else if (rb.velocity.y > 0 && !Input.GetButton("Jump"))
        {
            rb.velocity += Vector2.up * Physics2D.gravity.y * (lowJumpMultiplier - 1) * Time.deltaTime;
        }

        Move();
        Jump();
    }

    void Move()
    {
        float x = Input.GetAxisRaw("Horizontal");
        moveBy = x * speed;
        rb.velocity = new Vector2(moveBy, rb.velocity.y);
        AnimatePlayer();
    }

    void Jump()
    {
        if (Input.GetKeyDown(KeyCode.Space) && isGrounded)
        {
            rb.velocity = new Vector2(rb.velocity.x, jumpForce);
            isGrounded = false;
        }
    }

    void AnimatePlayer()
    {

        if (moveBy > 0)
        {
            anim.SetBool("Run", true);
            if (!facingRight) { Flip(); }

        }
        else if (moveBy < 0)
        {
            anim.SetBool("Run", true);
            if (facingRight) { Flip(); }
        }
        else
        {
            anim.SetBool("Run", false);
        }
    }

    void Flip()
    {
        facingRight = !facingRight;
        transform.Rotate(0f, 180f, 0f);
    }




    private void OnCollisionEnter2D(Collision2D collision)
    {
        if (collision.gameObject.CompareTag("Ground"))
        {
            isGrounded = true;
        }
       
    }
}