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

public class PlatformerScript : MonoBehaviour {
    public bool facingRight = true;
    public SpriteRenderer spriteRenderer;
    public Sprite JumpingOne;
    public Sprite JumpingTwo;
    public Sprite IdleSprite;
    public Sprite RunningOne;
    public Sprite RunningTwo;
    public Sprite RunningThree;
    public Sprite RunningFour;
    public GameObject Player;
    public float speed = 6.0F;
    public float jumpSpeed = 8.0F;
    public float gravity = 20.0F;
    private Vector3 moveDirection = Vector3.zero;
    public CharacterController controller;
    public float LegMoveRate = 0.2f;
    public float MoveHorizontal;
    public bool Moving = false;
    public bool IsJumping = false;
    /// <summary>
    ///
    /// </summary>
    void Update()
    {
        transform.position = new Vector3(transform.position.x, transform.position.y, -1);
        float Xpos = transform.position.x;
        float Ypos = transform.position.y;

        MoveHorizontal = Input.GetAxis("Horizontal");
        if (controller.isGrounded == true)
        {
            IsJumping = false;
            moveDirection = new Vector3(Input.GetAxis("Horizontal"), 0, 0);
            moveDirection = transform.TransformDirection(moveDirection);
            moveDirection *= speed;
            if (Input.GetButton("Jump"))
            {
                moveDirection.y = jumpSpeed;
            }
        }
        if (IsJumping == true)
        {
            if (controller.velocity.y >= 0)
            {
                spriteRenderer.sprite = JumpingOne;
            }
            if (controller.velocity.y < 0)
            {
                spriteRenderer.sprite = JumpingTwo;
            }
        }
        if (controller.isGrounded == false)
        {
            IsJumping = true;
        }

        moveDirection.y -= gravity * Time.deltaTime;
        controller.Move(moveDirection * Time.deltaTime);

        if (MoveHorizontal > 0 && !facingRight)
        {
            Flip();
        }
        else if (MoveHorizontal < 0 && facingRight)
        {
            Flip();
        }
        if (MoveHorizontal == 0)
        {

            if (IsJumping == false)
            {
                spriteRenderer.sprite = IdleSprite;
            }
            else if (IsJumping == true)
            {
                if (controller.velocity.y >= 0)
                {
                    spriteRenderer.sprite = JumpingOne;
                }
                if (controller.velocity.y < 0)
                {
                    spriteRenderer.sprite = JumpingTwo;
                }
            }

            Moving = false;
            CancelInvoke("MovingLegs");
            StopCoroutine("MovingLegs");
        }
        if (MoveHorizontal != 0 && IsJumping == false)
        {
            InvokeRepeating("MovingLegs", 0f, LegMoveRate * 4);
        }
    }
    void MoveLegs ()
    {
        StartCoroutine("MovingLegs");
    }
    IEnumerator MovingLegs ()
    {
        yield return new WaitForSeconds(LegMoveRate);
        spriteRenderer.sprite = RunningOne;
        yield return new WaitForSeconds(LegMoveRate);
        spriteRenderer.sprite = RunningTwo;
        yield return new WaitForSeconds(LegMoveRate);
        spriteRenderer.sprite = RunningThree;
        yield return new WaitForSeconds(LegMoveRate);
        spriteRenderer.sprite = RunningFour;
    }
    void Flip()
    {
        facingRight = !facingRight;
        Player.transform.Rotate(0, 180, 0);
    }
}