gpd-925-en/AI/Assets/Scripts/FSM/PlayerDetectedState.cs

using UnityEngine;

namespace AI.FSM
{
    public class PlayerDetectedState : IState
    {
        private GameObject _owner;
        private Transform _player;
        private float _radius;

        public PlayerDetectedState(GameObject owner, Transform player, float radius)
        {
            _owner = owner;
            _player = player;
            _radius = radius;
        }

        public void Enter(IFiniteStateMachine fsm)
        {
            Debug.Log("PlayerDetectedState Enter");
        }

        public void Update(IFiniteStateMachine fsm)
        {
            Debug.Log("PlayerDetectedState Update");

            // distance to player
            float distance = Vector3.Distance(_owner.transform.position, _player.position);

            if (distance < _radius)
            {
                // option 1: player is close enough
                Debug.Log("Player is close enough");
            }
            else
            {
                // option 2: player is too far
                Debug.Log("Player is too far");
                fsm.ChangeState(new IdleState(_owner, _player, 30.0f));
            }

        }

        public void Exit(IFiniteStateMachine fsm)
        {
            Debug.Log("PlayerDetectedState Exit");
        }
    }
}

public static class GameValues
{
    public static float PlayerDetectionRadius = 10.0f;
    public static float EnemyViewAngle = 30.0f;
}