MovementTests/resource_definitions/RDamageModifier.cs

using Godot;
using System;
using Movementtests.interfaces;
using Movementtests.systems.damage;

[GlobalClass]
public partial class RDamageModifier : Resource, IDamageable
{
    public event Action<IDamageable, float> DamageTaken;
    
    [Export]
    public EDamageTypes DamageType = EDamageTypes.Normal;
    [Export]
    public float Modifier = 1.0f;
    
    public RDamageModifier()
    {
        Modifier = 1.0f;
        DamageType = EDamageTypes.Normal;
    }
    public RDamageModifier(EDamageTypes damageType, float modifier)
    {
        Modifier = modifier;
        DamageType = damageType;
    }

    public float TakeDamage(RDamage damage)
    {
        if (damage.DamageType != DamageType) return 0;
        var finalDamage = damage.DamageDealt * Modifier;
        DamageTaken?.Invoke(this, finalDamage);
        return finalDamage;
    }
}