PlayerController

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

public class DracoController : MonoBehaviour      //You should change name to PlayerController
{
    private Rigidbody2D rb;
    private SpriteRenderer spriteRenderer;
    private Animator animator;
    private enum State { idle, running, jumping, landing, hurt, attack, dead };
    private State state = State.idle;
    private Collider2D collider;
    public Transform attackPoint;
    public float attackRange = 0.1f;
    [SerializeField] private LayerMask Ground;
    [SerializeField] private LayerMask enemyLayers;
    public int currentHealth = 100;                                                    
    public Text Health;


    // PHYSICS PARAMETERS
    public float speed = 4.0f;
    public float jumpSpeed = 2.0f;
    private float attackTimer = 0.0f;
    private float hurtTimer = 0.0f;
    private float deathTimer = 18.0f;
    //private bool isDead = false;
    //private float jumpdirection = 1.0f;
    //private int maxHealth = 100;
    



    void Start()
    {
        rb = GetComponent<Rigidbody2D>();
        animator = GetComponent<Animator>();
        collider = GetComponent<Collider2D>();
        spriteRenderer = GetComponent<SpriteRenderer>();
    }

    private void FixedUpdate()
    {
        Debug.Log(currentHealth);
        if (currentHealth <= 0)
		{
            state = State.dead;
            Debug.Log("Draco is dead!");
            deathTimer -= 1.0f;
            if (deathTimer == 0.0f)
            {
                Destroy(gameObject);
                GameOver();
            }
            
		}

        // Health UI
        Health.text = currentHealth.ToString();
        if (currentHealth > 0)
        {
            if (state != State.attack && state != State.hurt)
            {
                Movement();
            }

            MovementState();
        }

        animator.SetInteger("state", (int)state);

    }

    private void Movement()
    {
        if (Input.GetKey("right"))
        {
           rb.velocity = new Vector2(speed, rb.velocity.y);
           spriteRenderer.flipX = false;
        }

        else if (Input.GetKey("left"))
        {
            rb.velocity = new Vector2(-speed, rb.velocity.y);
            spriteRenderer.flipX = true;
        }

        else
        {
            state = State.idle;
        }

        if (Input.GetButton("Jump") && collider.IsTouchingLayers(Ground))
		{
            Jump();
            state = State.jumping;
		}

        if (Input.GetKeyDown(KeyCode.F) && collider.IsTouchingLayers(Ground))
        {
            state = State.attack;
            attackTimer = 20.0f;
            AttackMove();
        }

    }

    private void Jump()
	{
        rb.velocity = new Vector2(rb.velocity.x, jumpSpeed);
        //state = State.jumping;
    }

    private void MovementState()
	{
        // Horizontal Movement
        if (Mathf.Abs(rb.velocity.x) > 2.0f && collider.IsTouchingLayers(Ground) && state != State.hurt)
        {
            if (state != State.attack)
            {
                state = State.running;
            }

        }

        else if (rb.velocity.y > 0.1f)
        {
            state = State.jumping;
        }

        else if (state == State.attack)
		{
            attackTimer -= 1.0f;
            if (attackTimer == 0.0f)
            {
                state = State.idle;
                Movement();
            }
            
        }

        else if (state == State.hurt)
        {
            hurtTimer -= 1.0f;
            if (hurtTimer == 0.0f)
            {
                state = State.idle;
            }
        }

        else if (rb.velocity.y < 0.01f)
        {
            state = State.landing;

            if (collider.IsTouchingLayers(Ground))
            {
                state = State.idle;
            }
        }

        else 
        {
            state = State.idle;
        }
    }

    private void AttackMove()
	{
        Collider2D[] hitEnemies = Physics2D.OverlapCircleAll(attackPoint.position, attackRange, enemyLayers); //since new array is being created in every frame 

        foreach(Collider2D enemy in hitEnemies)
		{
            if (enemy.name == "Skeleton")
			{
                enemy.GetComponent<SkeletonController>().TakeDamage(100);
                Debug.Log("Skeleton damaged!");
            }

            else if (enemy.name == "Gato")
			{
                enemy.GetComponent<GatoController>().TakeDamage(100);
                Debug.Log("Gato damaged!");
            }

            else if (enemy.name == "Ghost")
			{
                enemy.GetComponent<GhostController>().TakeDamage(100);
                Debug.Log("Ghost damaged!");
            }

            else if (enemy.name == "Ghost Halo")
            {
                enemy.GetComponent<GhostHalo>().TakeDamage(100);
                Debug.Log("Ghost Halo damaged!");
            }

        }
        
	}

    private void OnCollisionEnter2D(Collision2D enemy)
	{
        if (enemy.gameObject.name == "Ghost" || enemy.gameObject.name == "Skeleton" || enemy.gameObject.name == "Gato" || enemy.gameObject.name == "Ghost Halo")
		{
            state = State.hurt;
            Debug.Log("State is hurt");
            if (spriteRenderer.flipX == false)
            {
                currentHealth -= 25;
                rb.velocity = new Vector2(-20.0f, rb.velocity.y);
                hurtTimer = 35.0f;
            }

            else
            {
                currentHealth -= 25;
                state = State.hurt;
                rb.velocity = new Vector2(20.0f, rb.velocity.y);
                hurtTimer = 35.0f;
            }
        }

        else if (enemy.gameObject.name == "Spike Collider" || enemy.gameObject.name == "Mountain Collider")
		{
            currentHealth = 0;
            
		}

	}


    void GameOver()
	{
        SceneManager.LoadScene("Game Over");

    }

    void OnDrawGizmosSelected()
	{
        if (attackPoint == null)
		{
            return;
		}

        Gizmos.DrawWireSphere(attackPoint.position, attackRange);
	}
}