PlayerController

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


public class PlayerController : MonoBehaviour
{

    //private movement variables
    private float horizontalInput;
    public float speed = 10;
    private float facing;
    private Vector3 yFlip = new Vector3(0, 180, 0);
    private Rigidbody2D rb2D;
    public float jumpForce = 10;

    //attack variables
    public GameObject attackPrefab;
    private Vector3 attackOffset = new Vector3(1.0f, -0.5f, 0);
    public bool isAttacking = false;

    //health variables
    public int curHealth = 0;
    public int maxHealth = 5;
    public HealthBar healthBar;
    public GameObject healthCanvas;

    //player respawn variables
    public float spawnX = -40;
    public float spawnY = 40;

    //animation variables
    private Animator anim;
    private AnimatorClipInfo[] currentClipInfo;
    private string clipName;

    //door variables
    private bool hasKey = false;
    public TextMeshProUGUI doorText;
    public GameObject doorTextBox;

    //player boss fight variables
    public bool inGuardFight = false;
    public bool inFrayFight = false;
    public bool beatFray = false;
    public GameObject fray;
    public GameObject guard;
    public GameObject dialogue;
    public GameObject healthSpawner;
    public TextMeshProUGUI frayText;
    public GameObject frayTextBox;
    private Vector3 guardSpawn = new Vector3(256, 92.2f, 0);

    //credits variables
    private GameObject credits;

    //sound effects variables
    private AudioSource audios;
    public AudioClip healthSound;
    public AudioClip jumpSound;
    public AudioClip hurtSound;
    public AudioClip landingSound;
    private bool onGround = false;
    public AudioClip attackSound;
    public AudioClip deathSound;
    public AudioClip hitEnemySound;
    public AudioClip bounceSound;
    public AudioClip hitArmourSound;



    // Start is called before the first frame update
    void Start()
    {
        //get components and objects
        rb2D = GetComponent<Rigidbody2D>();
        dialogue = GameObject.Find("Fray Text");
        frayText = dialogue.GetComponent<TextMeshProUGUI>();
        frayTextBox = GameObject.Find("Fray Text Box");
        healthSpawner = GameObject.FindGameObjectWithTag("Spawn Manager");
        credits = GameObject.FindGameObjectWithTag("Credits");
        healthCanvas = GameObject.FindGameObjectWithTag("Health Canvas");
        doorText = GameObject.Find("Door Text").GetComponent<TextMeshProUGUI>();
        doorTextBox = GameObject.Find("Door Text Box");
        anim = GetComponent<Animator>();
        audios = GetComponent<AudioSource>();


        //initialize variables
        facing = 1;
        transform.rotation = Quaternion.Euler(0, 0, 0);
        curHealth = maxHealth;

        //deactivate credits
        credits.SetActive(false);

    }

    // Update is called once per frame
    void Update()
    {
        //character movement

        //orient the character in the correct direction
        horizontalInput = Input.GetAxis("Horizontal");
        if (horizontalInput > 0)
        {
            if (facing != 1)
            {
                facing = 1;
                transform.Rotate(yFlip);
            }
        }
        else if (horizontalInput < 0)
        {
            if (facing != -1)
            {
                facing = -1;
                transform.Rotate(yFlip);
            }
        }
        //go forward according to local rotation
        transform.Translate(Vector3.right * Time.deltaTime * Mathf.Abs(horizontalInput) * speed);

        //don't play walking animation when standing still
        currentClipInfo = anim.GetCurrentAnimatorClipInfo(0);

        //make sure the clip is not out of bounds
        if (currentClipInfo.Length != 0)
        {
            clipName = currentClipInfo[0].clip.name;
        }

        if (clipName == "Player Walk Cycle")
        {
            //player is walking
            anim.speed = Mathf.Abs(horizontalInput);
        }
        else
        {
            //another animation is playing
            anim.speed = 1;
        }

        
        

        //jump if spacebar is pressed
        if (Input.GetKeyDown(KeyCode.Space))
        {
            Jump();
        }

        //launch an attack 
        if (Input.GetKeyDown(KeyCode.X) && !isAttacking)
        {
            anim.Play("Base Layer.Player Attack");

            audios.PlayOneShot(attackSound);

            isAttacking = true;
            GameObject attack = Instantiate(attackPrefab, transform.position, transform.rotation);
            attack.transform.Translate(attackOffset);
        }

        //check if the player has died
        if (curHealth <= 0)
        {

            audios.PlayOneShot(deathSound);

            //respawn
            curHealth = maxHealth;
            healthBar.SetHealth(curHealth);
            transform.position = new Vector3(spawnX, spawnY, 0);

            if (inGuardFight)
            {
                StartGuardFight();
            }
            else if(inFrayFight)
            {
                StartFrayFight();
            }
        }

    }

    //allow to the player to take damage from non-triggers like enemies
    private void OnCollisionEnter2D(Collision2D other)
    {
        if (other.gameObject.tag == "Enemy")
        {
            //take damage
            DamagePlayer(1);

            //make the enemy freeze
            if (other.gameObject.GetComponent<MoveBetweenBounds>() != null)
            {
                other.gameObject.GetComponent<MoveBetweenBounds>().freeze();
            }

        }
        //allow the player to open the door
        else if (other.gameObject.name == "Key Door" && hasKey)
        {
            Destroy(other.gameObject);
            doorTextBox.SetActive(false);
            doorText.text = "";
        }
        else if (other.gameObject.tag == "Bounce")
        {
            audios.PlayOneShot(bounceSound);
        }
       

        //play a sound if the player is landing
        if (!onGround)
        {
            audios.PlayOneShot(landingSound);
        }

    }

    //allow to the player to take damage from triggers like acid
    private void OnTriggerStay2D(Collider2D other)
    {
        if (other.gameObject.name == "Acid")
        {
            //take damage
            DamagePlayer(1);
        }
    }

    //allow the player to interact with triggers
    private void OnTriggerEnter2D(Collider2D other)
    {
        //allow the player to pick up the key
        if(other.name == "Key")
        {
            Destroy(other.gameObject);
            hasKey = true;

            doorText.text = "Well done, you found the key. Touch the door with it so we can keep moving.";
        }
        else if(other.gameObject.tag == "Health")
        {
            audios.PlayOneShot(healthSound);
        }
    }

    //allow the player to jump
    private void Jump()
    {
        if (rb2D.velocity.y < 0.4 && rb2D.velocity.y > -0.4)
        {
            anim.Play("Base Layer.Player Jump");

            audios.PlayOneShot(jumpSound);

            onGround = false;
            rb2D.AddForce(transform.up * jumpForce, ForceMode2D.Impulse);
        }
    }

    //allow the player to jump
    public void ExitGame()
    {
        Debug.Log("quit game");
        Application.Quit();
    }


    public void SetHealth(int newHealth)
    {
        curHealth = newHealth;
    }

    //method to cause the player to take damage
    public void DamagePlayer(int damage)
    {
        audios.PlayOneShot(hurtSound);
        curHealth -= damage;
        healthBar.SetHealth(curHealth);
    }

    public void PlayHitEnemy()
    {
        audios.PlayOneShot(hitEnemySound);
    }

    public void StartGuardFight()
    {
        frayText.text = "";

        //activate spawner
        healthSpawner.SetActive(true);

        //get enemies
        fray = GameObject.FindGameObjectWithTag("Fray");
        guard = GameObject.FindGameObjectWithTag("Guard");

        //reset the guard enemy
        guard.transform.position = guardSpawn;
        guard.GetComponent<GuardScript>().ResetStats();

        //reset fray's position
        fray.transform.position = new Vector3(250, 108, 0);

        //play through the guard cutscene
        frayTextBox.SetActive(false);
        StartCoroutine(DisplayFirstFrayText(1));

        StartCoroutine(WaitThenClearFrayText(5));

    }

    //Guard cutscene: display the first line said by fray
    IEnumerator DisplayFirstFrayText(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayTextBox.SetActive(true);
        frayText.text = "Here it is! They hid the Artifact inside the Beacon! Let's kill the guard and finish our mission, attack his head!";
    }

    //Guard cutscene: clear fray's dialogue
    IEnumerator WaitThenClearFrayText(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayText.text = "";
        frayTextBox.SetActive(false);

    }


    public void StartFrayFight()
    {
        inGuardFight = false;
        inFrayFight = true;
        fray.GetComponent<FrayScript>().inFight = false;
        fray.GetComponent<FrayScript>().ResetStats();

        //play cutscene
        StartCoroutine(FrayFightCutscene1(1));

    }

    IEnumerator FrayFightCutscene1(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayTextBox.SetActive(true);
        frayText.text = "You killed him. I'll give you a moment to celebrate.";
        StartCoroutine(FrayFightCutscene2(3));
    }

    IEnumerator FrayFightCutscene2(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayText.text = "Why aren't I so happy? Well you see, my mission is not yet complete.";
        StartCoroutine(FrayFightCutscene3(5));
        //play animation
    }

    IEnumerator FrayFightCutscene3(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayText.text = "Your mission was to bring the Artifact home. Mine... to take it from you.";
        StartCoroutine(FrayFightCutscene4(4));

    }

    IEnumerator FrayFightCutscene4(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayText.text = "";
        frayTextBox.SetActive(false);

        fray.GetComponent<FrayScript>().inFight = true;
    }

    //called by FrayScript once she has been defeated (inFight set to false beforehand)
    public void FrayDied()
    {
        beatFray = true;
        inFrayFight = false;

        StartCoroutine(FrayDefeated1(0));
    }

    IEnumerator FrayDefeated1(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayTextBox.SetActive(true);        
        frayText.text = "Agh... You were much stronger than I thought.";
        StartCoroutine(FrayDefeated2(3));
        
    }

    IEnumerator FrayDefeated2(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);
        frayText.text = "The Artifact will belong to Elacsc someday... there will never be peace between us.";
        StartCoroutine(Credits(5));
    }

    IEnumerator Credits(int timeToWait)
    {
        yield return new WaitForSeconds(timeToWait);

        //hide other ui objects from view
        frayTextBox.SetActive(false);
        frayText.text = "";
        healthCanvas.SetActive(false);

        credits.SetActive(true);

    }

}