private static int GetConstitutionHpBonus(IAttributesModule attributesModule)
        {
            var constitutionAttribute = attributesModule.GetAttribute(PersonAttributeType.Constitution);
            int constitutionHpBonus;

            if (constitutionAttribute is null)
            {
                constitutionHpBonus = 0;
            }
            else
            {
                const int CONSTITUTION_HP_INFLUENCE = 2;
                const int BASE_CONSTITUTION         = 10;

                if (constitutionAttribute.Value > 10)
                {
                    constitutionHpBonus = ((int)constitutionAttribute.Value - BASE_CONSTITUTION) * CONSTITUTION_HP_INFLUENCE;
                }
                else
                {
                    constitutionHpBonus = -(BASE_CONSTITUTION - (int)constitutionAttribute.Value) * CONSTITUTION_HP_INFLUENCE;
                }
            }

            return(constitutionHpBonus);
        }
        public int CalculateCost()
        {
            var dexterityAttribute = _attributesModule.GetAttribute(PersonAttributeType.Dexterity);
            var significantValue   = (int)Math.Ceiling(dexterityAttribute.Value);
            var diffValue          = significantValue - BASE_DEXTERITY;

            return(BASE_COST - (diffValue * COST_PER_DEXTERITY_UNIT));
        }