Boss.cs

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

public class Boss : MonoBehaviour
{
    public Animator animator;
    public float maxHealth = 75; //health
    public float currentHealth;

    public GameObject healthBarUI;
    public Slider slider;
    public GameObject enemie;
    public Transform ghost;
    public GameObject score; //shuriken
    public GameObject key; //drop key
    public int Shurikendamage = 10;

    public Transform player;

    public bool isFlipped = false;
    //Same as other scripts
    void Start()
    {
        currentHealth = maxHealth;
        slider.value = CalculateHealth();
        ghost.position = new Vector3(ghost.position.x, ghost.position.y, ghost.position.z);

    }

    void Update()
    {
        slider.value = CalculateHealth();

        if (currentHealth < maxHealth)
        {
            healthBarUI.SetActive(true);
        }

        



    }

    //this way the sprite is alwyas facing the correct direction
    public void LookAtPlayer()
    {
        //ysed local scale
        Vector3 flipped = transform.localScale;
        flipped.z *= -1f;

        if (transform.position.x > player.position.x && isFlipped)
        {
            //not flipped
            transform.localScale = flipped;
            transform.Rotate(0f, 180f, 0f);
            isFlipped = false;
        }
        else if (transform.position.x < player.position.x && !isFlipped)
        {
            //flipped
            transform.localScale = flipped;
            transform.Rotate(0f, 180f, 0f);
            isFlipped = true;
        }
    }


    public void TakeDamage(int damage)
    {
        healthBarUI.SetActive(true);

        currentHealth -= damage;
        slider.value = CalculateHealth();

        //Hurt Animation
        SoundManagerScript.PlaySound("KnightHurt");
        if (currentHealth < 50)
        {
            GetComponent<Animator>().SetBool("IsEnraged", true);
        }
        if (currentHealth <= 0)
        {
            //drop score and key
            Instantiate(key, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);
            Instantiate(score, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);
            Instantiate(score, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);
            Instantiate(score, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);
            Instantiate(score, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);
            Instantiate(score, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);
            Instantiate(score, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);
            Instantiate(score, new Vector3(ghost.position.x, ghost.position.y, ghost.position.z), Quaternion.identity);



            Die();
        }
    }

    void Die()
    {
        enemie.SetActive(false);

    }

    //if hi tby bullet
    private void OnTriggerEnter2D(Collider2D other)
    {
        if (other.gameObject.CompareTag("Bullet"))
        {
            other.gameObject.SetActive(false);
            TakeDamage(Shurikendamage);
            healthBarUI.SetActive(true);
            slider.value = CalculateHealth();
            SoundManagerScript.PlaySound("KnightHurt");
        }

    }

    float CalculateHealth()
    {
        return currentHealth / maxHealth;
    }

}