unity-atoms/Examples/Assets/InfinityWaves/Projectile/DecreaseHealth.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Assertions;
using UnityAtoms.BaseAtoms;
using UnityAtoms;
using UnityAtoms.Tags;

public class DecreaseHealth : MonoBehaviour
{
    public List<StringConstant> TagsAffected { get => _tags; }

    [SerializeField]
    private IntReference _decreaseBy;

    [SerializeField]
    private List<StringConstant> _tags;

    [SerializeField]
    private VoidBaseEventReference _didCollide;

    void Start()
    {
        Assert.IsNotNull(_decreaseBy);
        Assert.IsNotNull(_tags);
    }

    public void Do(Collider2D collider)
    {
        if (collider.gameObject.HasAnyTag(_tags))
        {
            collider.GetComponent<UnitHealth>().Health -= _decreaseBy;
        }

        if (_didCollide != null && _didCollide.Event != null)
        {
            _didCollide.Event.Raise();
        }
    }
}