unity-atoms/Examples/Assets/InfinityWaves/Enemy/EnemyMovement.cs

using UnityEngine;
using UnityAtoms.BaseAtoms;
using UnityAtoms.Tags;
using UnityAtoms.FSM;

public class EnemyMovement : MonoBehaviour
{
    [SerializeField]
    private StringReference _tagToTarget;

    [SerializeField]
    private FloatReference _shootingRange = new FloatReference(5f);

    [SerializeField]
    private FloatReference _moveSpeedMultiplier = new FloatReference(2f);

    [SerializeField]
    private FiniteStateMachineReference _enemyState;


    void Awake()
    {
        Transform target = null;
        AtomTags.OnInitialization(() => target = AtomTags.FindByTag(_tagToTarget.Value).transform);
        var body = GetComponent<Rigidbody2D>();

        _enemyState.Machine.OnUpdate((deltaTime, value) =>
        {
            if (target)
            {
                body.Move((target.position - transform.position), value == "CHASING" ? 2f : 0f, deltaTime);
            }
        }, gameObject);
        _enemyState.Machine.DispatchWhen(command: "ATTACK", (value) => target != null && value == "CHASING" && (_shootingRange.Value >= Vector3.Distance(target.position, transform.position)), gameObject);
        _enemyState.Machine.DispatchWhen(command: "CHASE", (value) => target != null && value == "ATTACKING" && (_shootingRange.Value < Vector3.Distance(target.position, transform.position)), gameObject);
    }
}