using System;
using System.Collections.Generic;

namespace Flocking
{
    public class SubMission
    {
        private List<Goal> goals; // goals that need to be accomplished for this mission

        public SubMission()
        {
            goals = new List<Goal>();
        }

        public void AddGoal(Goal goal)
        {
            goals.Add(goal);
        }

        public void Update(float dt)
        {
            foreach(var goal in goals)
                goal.Update(dt);
        }

        public Goal.State GetState()
        {
            int goalsInProgress = 0;

            foreach(var goal in goals)
            {
                switch(goal.GetState())
                {
                // if a goal has failed, return Failed
                case Goal.State.Failed:
                    return Goal.State.Failed;

                case Goal.State.InProgress:
                    ++goalsInProgress;
                    break;
                }
            }

            // if there are no goals in progress, it means all goals were completed
                if( goalsInProgress == 0 )
                    return Goal.State.Accomplished;

                return Goal.State.InProgress;
        }
    }
}