源代码: https://github.com/t39q/VirusSpread

主要代码

using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;namespace VirusSpread.BussnessLogic
{public class VirusSpread{public static ConcurrentBag<Model.PeopleModel.People> peoples;public static void Init(){peoples = new ConcurrentBag<Model.PeopleModel.People>();Random random = new Random(DateTime.Now.Millisecond * DateTime.Now.Second);for (int i = 0; i < 100; i++){Model.PeopleModel.People people = new Model.PeopleModel.People();people.ID = i;people.X = random.NextDouble() * 400;people.Y = random.NextDouble() * 400;people.Disease = false;peoples.Add(people);}for (int i = 100; i < 103; i++){Model.PeopleModel.People people = new Model.PeopleModel.People();people.ID = i;people.X = random.NextDouble() * 400;people.Y = random.NextDouble() * 400;people.Disease = true;peoples.Add(people);}}public static void Run(int spreadCount,int moveDistance){int count = 0;Random random = new Random(DateTime.Now.Millisecond * DateTime.Now.Second);while (true){if (count > spreadCount){break;}foreach (var item in peoples){int parity = random.Next(0,200);double tempX, tempY;if (parity % 2 == 0){tempX = item.X + random.NextDouble() * moveDistance;tempY = item.Y + random.NextDouble() * moveDistance;}else{tempX = item.X - random.NextDouble() * moveDistance;tempY = item.Y - random.NextDouble() * moveDistance;}if (tempX>0 && tempX < 400 && tempY>0 && tempY < 400){item.X = tempX;item.Y = tempY;}}Thread.Sleep(1000);count++;}}public static void Spread(int spreadCount,int infectious){int count = 0;while (true){if (count > spreadCount){break;}var healthy = peoples.Where(item => item.Disease == false).ToList();var infected = peoples.Where(item => item.Disease == true).ToList();var pairsJoin = (from healthyItem in healthyfrom infectedItem in infectedselect new { healthyItem, infectedItem }).ToList();foreach (var item in pairsJoin){CalcDistance(item.healthyItem, item.infectedItem, out double distance);if (distance < infectious){var infectedLabel = peoples.Where(find => find.ID == item.healthyItem.ID).FirstOrDefault();infectedLabel.Disease = true;}}Thread.Sleep(1000);count++;}}public static void Display(out string statistics){statistics = peoples.Where(item => item.Disease == true).Count().ToString();}public static void CalcDistance(Model.PeopleModel.People A, Model.PeopleModel.People B, out double distance){double X = Math.Abs(A.X - B.X);double Y = Math.Abs(A.Y - B.Y);distance = Math.Sqrt(X * X + Y * Y);}}
}