Моделирование систем.Слежение

using System;
using System.Threading;
 
namespace ConsoleApplication22
{
    class Program
    {
        static void Main()
        {
            var dc = new DistanceCalculator(100, 2, 5, 30);
            do
            {
                Console.WriteLine("Rabbit position: " + dc.CurrentRabitPosition);
                Console.WriteLine("Dog position: " + dc.CurrentDogPosition);
                Console.WriteLine("Distance: " + (dc.CurrentRabitPosition - dc.CurrentDogPosition));
                Console.WriteLine("________________________________");
                Thread.Sleep(50);
            } while (dc.Step());
            Console.WriteLine("Catch!");
            Console.WriteLine("Time to catch: {0} seconds", dc.HuntingTime);
            Console.ReadKey();
        }
    }
 
    class DistanceCalculator
    {
        private const int Fraps = 60;
        public readonly double StartDistantion, RabbitSpeed, DogSpeed;
        public readonly int StepTime;
        public double CurrentDogPosition { get; private set; }
        public double CurrentRabitPosition { get; private set; }
 
        public DistanceCalculator(double startDistantion, double rabbitSpeed, double dogSpeed, int stepTime)
        {
            CurrentRabitPosition = StartDistantion = startDistantion;
            RabbitSpeed = rabbitSpeed;
            DogSpeed = dogSpeed;
            StepTime = stepTime;
        }
 
        public bool Step()
        {
            CurrentDogPosition += CalculateDelta(DogSpeed);
            CurrentRabitPosition += CalculateDelta(RabbitSpeed);
            return CurrentDogPosition < CurrentRabitPosition;
        }
 
        private double CalculateDelta(double parameter)
        {
            return parameter*StepTime/Fraps;
        }
 
        public double HuntingTime { get { return StartDistantion / (DogSpeed - RabbitSpeed); } }
    }
}