Spike of a Random composite node for a Behavior Tree

gistfile1.cs

    public class Random : BehaviorComposite
    {
        private readonly System.Random random;
        private Behavior current;

        public Random(params Behavior[] behaviors)
            : this(null, behaviors)
        {
        }

        public Random(string name, params Behavior[] behaviors)
            : base(name, behaviors)
        {
            this.random =
                new System.Random(Guid.NewGuid().GetHashCode());
        }

        public override BehaviorResult OnBehave(BehaviorContext context)
        {
            var behavior =
                this.GetBehavior();

            var result =
                behavior.Behave(context);

            this.current = (result == BehaviorResult.Running)
                ? behavior
                : null;

            return result;
        }

        private Behavior GetBehavior()
        {
            if (this.current != null)
            {
                return current;
            }

            var index =
                this.random.Next(this.Behaviors.Count());

            return this.Behaviors[index];
        }
    }