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

public class Control : Unit {

    [SerializeField]
    private float speed = 3.0f;
    [SerializeField]
    private int lives = 5;
    [SerializeField]
    private float jumpForce = 15.0f;
    private bool isGrounded = false;

    new private Rigidbody2D rigidbody;
    private Animator animator;
    private SpriteRenderer sprite;
    private int score;
    public Text scoreText;


    private CharState State
    {
        get { return (CharState)animator.GetInteger("State"); }
        set { animator.SetInteger("State", (int)value); }

    }
    private void Awake()
    {
        rigidbody = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
        sprite = GetComponentInChildren<SpriteRenderer>();
        score = 0;
        scoreText.text = "Score: " + score.ToString();
    }

    private void FixedUpdate()
    {
        CheckGround();
    }

    private void Update()
    {
        if (isGrounded) State = CharState.Idle;

        if (Input.GetButton("Horizontal")) Run();
        if (isGrounded && Input.GetButton("Jump")) Jump();
    }

    private void Run()
    {

        Vector3 direction = transform.right * Input.GetAxis("Horizontal");

        transform.position = Vector3.MoveTowards(transform.position, transform.position + direction, speed * Time.deltaTime);

        sprite.flipX = direction.x < 0.0F;

        if (isGrounded) State = CharState.Run;

    }

    private void Jump()
    {
        rigidbody.AddForce(transform.up * jumpForce, ForceMode2D.Impulse);
    }

    private void CheckGround()
    {
        Collider2D[] colliders = Physics2D.OverlapCircleAll(transform.position, 0.5F);

        isGrounded = colliders.Length > 1;

        if (!isGrounded) State = CharState.Jump;
    }

    void OnTriggerEnter2D(Collider2D other)
    {
        if (other.gameObject.CompareTag("Pick Up"))
        {
            Destroy(other.gameObject);
            score++;
            scoreText.text = "Score: " + score.ToString();
        }
    }

    }

public enum CharState
{
    Idle,
    Run,
    Jump,
}