CartoonFPS/Assets/Scripts/BaseAIController.cs

using UnityEngine;
using Akila.FPSFramework;

public enum TargetType
{
    None,
    Enemy,
    Player,
    PatrolPoint
}

public abstract class BaseAIController : MonoBehaviour
{
    [Header("Movement & Combat")]
    public float moveSpeed = 5f;
    public float chaseRange = 15f;
    public float stopCloseRange = 4f;
    public float strafeAmount;
    public float pointWaitTimer = 3f;
    public float currentHealth = 25f;
    public float waitToDisappear = 4f;
    public float damageAmount = 10f;
    
    [Header("Components")]
    public Rigidbody theRB;
    public Animator anim;

    [Header("Patrol")]
    public Transform[] PatrolPoints;
    protected int currentPatrolPoint;
    public Transform pointsHolder;
    protected float waitCounter;
    
    protected bool isDead;
    protected float attackCooldown = 1f;
    protected float attackTimer = 0f;
    
    protected FirstPersonController player;
    protected Damageable playerDamageable;

    protected virtual void Start()
    {
        player = FindFirstObjectByType<FirstPersonController>();
        if (player != null)
        {
            playerDamageable = player.GetComponent<Damageable>();
        }

        strafeAmount = Random.Range(-0.75f, 0.75f);
        if (pointsHolder != null)
        {
            pointsHolder.SetParent(null);
        }
        waitCounter = Random.Range(0.75f, 1.25f) * pointWaitTimer;
        attackTimer = 0f;
    }

    protected void HandleDeath()
    {
        waitToDisappear -= Time.deltaTime;
        if (waitToDisappear <= 0)
        {
            transform.localScale = Vector3.MoveTowards(transform.localScale, Vector3.zero, Time.deltaTime * 2f);
            if (transform.localScale.magnitude < 0.1f)
            {
                Destroy(gameObject);
                if (pointsHolder != null)
                {
                    Destroy(pointsHolder.gameObject);
                }
            }
        }
    }

    protected void UpdateTimers()
    {
        attackTimer -= Time.deltaTime;
    }

    protected bool ValidatePlayerReferences()
    {
        return player != null && playerDamageable != null;
    }

    protected void StopMovement()
    {
        theRB.linearVelocity = Vector3.zero;
        anim.SetFloat("speed", 0f);
    }

    protected void LookAt(Transform target)
    {
        if (target != null)
        {
            transform.LookAt(new Vector3(target.position.x, transform.position.y, target.position.z));
        }
    }

    protected void MoveTowardsTarget(Transform target, float speedMultiplier)
    {
        if (target != null)
        {
            LookAt(target);
            theRB.linearVelocity = (transform.forward + transform.right * strafeAmount) * moveSpeed;
            anim.SetFloat("speed", speedMultiplier);
        }
    }

    protected void AttackTarget()
    {
        theRB.linearVelocity = Vector3.zero;
        anim.SetFloat("speed", 0f);
        
        if (attackTimer <= 0f)
        {
            anim.SetTrigger("attack");
            attackTimer = attackCooldown;
        }
    }

    protected void HandlePatrolling()
    {
        if (PatrolPoints.Length > 0)
        {
            float distanceToPatrolPoint = Vector3.Distance(transform.position,
                new Vector3(PatrolPoints[currentPatrolPoint].position.x, transform.position.y, PatrolPoints[currentPatrolPoint].position.z));

            if (distanceToPatrolPoint < 0.25f)
            {
                WaitAtPatrolPoint();
            }
            else
            {
                MoveToPatrolPoint();
            }
        }
        else
        {
            StopMovement();
        }
    }

    protected void WaitAtPatrolPoint()
    {
        waitCounter -= Time.deltaTime;
        StopMovement();

        if (waitCounter <= 0)
        {
            MoveToNextPatrolPoint();
        }
    }

    protected void MoveToNextPatrolPoint()
    {
        currentPatrolPoint++;
        if (currentPatrolPoint >= PatrolPoints.Length)
        {
            currentPatrolPoint = 0;
        }
        waitCounter = Random.Range(0.75f, 1.25f) * pointWaitTimer;
    }

    protected void MoveToPatrolPoint()
    {
        MoveTowardsTarget(PatrolPoints[currentPatrolPoint], 0.5f); // Walking speed
    }

    protected void PreserveVerticalVelocity(float yStore)
    {
        theRB.linearVelocity = new Vector3(theRB.linearVelocity.x, yStore, theRB.linearVelocity.z);
    }

    public virtual void TakeDamage(float damageToTake)
    {
        currentHealth -= damageToTake;
        if (currentHealth <= 0)
        {
            anim.SetTrigger("dead");
            isDead = true;
            theRB.linearVelocity = Vector3.zero;
            theRB.isKinematic = true;
            GetComponent<Collider>().enabled = false;
        }
    }
}