RandomMoverBrain.cs

Siirry tämän tiedoston dokumentaatioon.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Jypeli
{
    public class RandomMoverBrain : AbstractMoverBrain
    {
        private Timer changeDirectionTimer;
        private Angle currentDirection;

        public double ChangeMovementSeconds
        {
            get { return changeDirectionTimer.Interval; }
            set { changeDirectionTimer.Interval = value; }
        }

        public Vector WanderPosition { get; set; }

        public double WanderRadius { get; set; }

        public RandomMoverBrain()
            : base()
        {
            changeDirectionTimer = new Timer();
            changeDirectionTimer.Timeout += ChangeDirection;
            changeDirectionTimer.Interval = 3;

            ChangeDirection();
            WanderRadius = double.PositiveInfinity;
        }

        public RandomMoverBrain( double speed )
            : this()
        {
            Speed = speed;
        }

        protected override void OnAdd( IGameObject newOwner )
        {
            changeDirectionTimer.Start();
            WanderPosition = newOwner.AbsolutePosition;
            base.OnAdd( newOwner );
        }

        protected override void OnRemove( IGameObject prevOwner )
        {
            changeDirectionTimer.Stop();
            base.OnRemove( prevOwner );
        }

        void ChangeDirection()
        {
            currentDirection = RandomGen.NextAngle();
        }

        public override void OnCollision( IGameObject target )
        {
            Vector d = target.AbsolutePosition - Owner.AbsolutePosition;
            Angle n1 = d.Angle - Angle.RightAngle;
            Angle n2 = d.Angle + Angle.RightAngle;

            currentDirection = RandomGen.NextAngle( n1, n2 );

            base.OnCollision( target );
        }

        protected override void Update( Time time )
        {
            if ( Owner == null )
                return;

            if ( !double.IsInfinity( WanderRadius ) )
            {
                Vector d = WanderPosition - Owner.AbsolutePosition;
                if ( d.Magnitude > WanderRadius )
                    currentDirection = d.Angle;
            }

            Move( currentDirection );
            base.Update( time );
        }
    }
}