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

/*
--------------------------------------
    Project: Programing assessment
    Standard: 91906 (AS3.7) v.1
    School: Tauranga Boys' College
    Author: Rauputu Noah Phizacklea
    Date: August 2024
    Unity: 2021.3.18f
---------------------------------------
*/

public class Boss_Run : StateMachineBehaviour
{
    public float speed = 2.5f;           // Speed at which the boss moves
    public float attackRange = 3f;      // Range within which the boss will attack

    Transform player;                   // Reference to the player’s transform
    Rigidbody2D rb;                     // Reference to the boss's Rigidbody2D component
    Boss boss;                          // Reference to the Boss script

    // OnStateEnter is called when a transition starts and the state machine starts to evaluate this state
    override public void OnStateEnter(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        // Find and store references to player, Rigidbody2D, and Boss script components
        player = GameObject.FindGameObjectWithTag("Player").transform;
        rb = animator.GetComponent<Rigidbody2D>();
        boss = animator.GetComponent<Boss>();
    }

    // OnStateUpdate is called on each Update frame between OnStateEnter and OnStateExit callbacks
    override public void OnStateUpdate(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        // Make the boss look at the player
        boss.LookAtPlayer();

        // Calculate the target position (boss should move horizontally towards the player)
        Vector2 target = new Vector2(player.position.x, rb.position.y);
        // Move the boss towards the target position
        Vector2 newPos = Vector2.MoveTowards(rb.position, target, speed * Time.fixedDeltaTime);
        rb.MovePosition(newPos);

        // If the distance between the boss and the player is within attack range, trigger an attack
        if (Vector2.Distance(player.position, rb.position) <= attackRange)
        {
            animator.SetTrigger("isAttacking");
        }
    }

    // OnStateExit is called when a transition ends and the state machine finishes evaluating this state
    override public void OnStateExit(Animator animator, AnimatorStateInfo stateInfo, int layerIndex)
    {
        // Reset the attack trigger when exiting this state
        animator.ResetTrigger("isAttacking");
    }
}