HeroBuilder_step02.cs

namespace Blog.RolePlayingGame.Core
{
    public class HeroBuilder
    {
        private HeroClass _class;

        public HeroBuilder OfWarriorClass()
        {
            _class = HeroClass.Warrior;
            return this;
        }
        
        public Hero Create()
        {
           if( IsClassNotSettled())
               throw new BuildingHeroWithoutClassAttempException();
            
           return new Hero(@class: _class, 
                name: _name ,
                level:1, 
                health: _health,
                strength: 0,
                spirit: 0,
                speed: 0);
        }
        
        public class BuildingHeroWithoutClassAttempException : Exception
        {
            public BuildingHeroWithoutClassAttempException() : base ("Cannot creating an hero without class") { }
        }
    }
    
        
}