127 lines
3.5 KiB
C#
127 lines
3.5 KiB
C#
/*
|
|
* author: mark joshwel
|
|
* date: 19/6/2024
|
|
* description: enemy AI based off <https://youtu.be/UjkSFoLxesw>
|
|
*/
|
|
|
|
using UnityEngine;
|
|
using UnityEngine.AI;
|
|
|
|
/// <summary>
|
|
/// AI patrolling, chasing and capturing behaviour for the enemy
|
|
/// </summary>
|
|
public class HerController : MonoBehaviour
|
|
{
|
|
/// <summary>
|
|
/// cache variable for the walking parameter in the animator
|
|
/// </summary>
|
|
private static readonly int IsMoving = Animator.StringToHash("isMoving");
|
|
|
|
/// <summary>
|
|
/// cache variable for the chasing parameter in the animator
|
|
/// </summary>
|
|
private static readonly int IsChasing = Animator.StringToHash("isChasing");
|
|
|
|
/// <summary>
|
|
/// variable for the nav mesh agent that determines where the enemy can move
|
|
/// </summary>
|
|
public NavMeshAgent agent;
|
|
|
|
/// <summary>
|
|
/// variable for the player's position
|
|
/// </summary>
|
|
public Transform player;
|
|
|
|
/// <summary>
|
|
/// variables to distinguish player for sensing
|
|
/// </summary>
|
|
public LayerMask playerLayerMask;
|
|
|
|
/// <summary>
|
|
/// variable specifying the capture range of the enemy
|
|
/// </summary>
|
|
public float captureRange;
|
|
|
|
/// <summary>
|
|
/// boolean variable for the player being in attack range
|
|
/// </summary>
|
|
public bool playerInCaptureRange;
|
|
|
|
/// <summary>
|
|
/// variable for the animator
|
|
/// </summary>
|
|
private Animator _anim;
|
|
|
|
/// <summary>
|
|
/// variable to store game manager
|
|
/// </summary>
|
|
private GameManager _game;
|
|
|
|
/// <summary>
|
|
/// function to set any initial values
|
|
/// </summary>
|
|
private void Awake()
|
|
{
|
|
// get the player
|
|
player = GameObject.FindGameObjectWithTag("Player").transform;
|
|
// get the nav mesh agent
|
|
agent = GetComponent<NavMeshAgent>();
|
|
// get the animator
|
|
_anim = GetComponent<Animator>();
|
|
// get the game manager
|
|
_game = GameManager.Instance;
|
|
}
|
|
|
|
/// <summary>
|
|
/// function to update the enemy's behaviour
|
|
/// </summary>
|
|
private void Update()
|
|
{
|
|
// check for sight and attack range
|
|
playerInCaptureRange = Physics.CheckSphere(transform.position, captureRange, playerLayerMask);
|
|
|
|
if (!playerInCaptureRange) ChasePlayer();
|
|
else CapturePlayer();
|
|
}
|
|
|
|
/// <summary>
|
|
/// function to draw/visualize the sight and attack range of the enemy
|
|
/// </summary>
|
|
private void OnDrawGizmosSelected()
|
|
{
|
|
Gizmos.color = Color.red;
|
|
Gizmos.DrawWireSphere(transform.position, captureRange);
|
|
}
|
|
|
|
/// <summary>
|
|
/// function to chase the player
|
|
/// </summary>
|
|
private void ChasePlayer()
|
|
{
|
|
// start chasing animation
|
|
_anim.SetBool(IsMoving, true);
|
|
_anim.SetBool(IsChasing, true);
|
|
// aim at the player
|
|
agent.SetDestination(player.position);
|
|
}
|
|
|
|
/// <summary>
|
|
/// function that captures the player and signals the game manager appropriately
|
|
/// </summary>
|
|
private void CapturePlayer()
|
|
{
|
|
// signal the game manager to show the 'caught!' menu
|
|
if (_game.Paused) return;
|
|
|
|
Debug.Log("captured...");
|
|
_game.SetDisplayState(GameManager.DisplayState.ScreenCaughtMenu);
|
|
|
|
// // stop any moving animations
|
|
// _anim.SetBool(IsChasing, false);
|
|
// _anim.SetBool(IsMoving, false);
|
|
// // don't move the enemy
|
|
// agent.SetDestination(transform.position);
|
|
// // look at me!
|
|
// transform.LookAt(player);
|
|
}
|
|
} |