2018年4月10日火曜日

開発環境

Head First C# ―頭とからだで覚えるC#の基本 (Andrew Stellman (著)、Jennifer Greene (著)、佐藤 嘉一 (監修, 監修)、木下 哲也 (翻訳)、オライリージャパン)の5章(継承 - オブジェクトの系図)、エクササイズ(p. 216)を取り組んでみる。

コード

Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp16
{
    public partial class Form1 : Form
    {
        Queen queen;

        public Form1()
        {
            InitializeComponent();
            Worker[] workers = new Worker[] {
                new Worker(new string[] {"花蜜の収集", "蜂蜜の製造" }, 175),
                new Worker(new string[] {"卵の世話", "幼虫の世話" }, 114),
                new Worker(new string[] {"巣のメンテナンス", "パトロール" }, 149),
                new Worker(
                    new string[] {
                        "花蜜の収集", "蜂蜜の製造", "卵の世話",
                        "幼虫の世話", "巣のメンテナンス", "パトロール"}, 155)
            };
            queen = new Queen(workers, 275);
        }

        private void assignJob_Click(object sender, EventArgs e)
        {
            if (queen.assignWork(workerBeeJob.Text, (int)shifts.Value))
            {
                MessageBox.Show("'" + workerBeeJob.Text + "'は、あと" +
                    shifts.Value + "シフトで終わる。", "女王蜂が言った...");
            }
            else
            {
                MessageBox.Show("'" + workerBeeJob.Text + 
                    "'の仕事をさせるための蜂がいない。", "女王蜂が言った...");
            }
        }

        private void nextShift_Click(object sender, EventArgs e)
        {
            report.Text = queen.workTheNextShift();
        }
    }
}

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp16
{
    static class Program
    {
        /// <summary>
        /// アプリケーションのメイン エントリ ポイントです。
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }

    class Bee
    {
        private int shiftsLeft = 0;
        private double weight;

        public Bee(double weight)
        {
            this.weight = weight;
        }

        public virtual int ShiftsLeft
        {
            get { return shiftsLeft; }
        }

        public virtual double getHoneyConsumption()
        {
            double consumption = 0;
            if (shiftsLeft > 0)
            {
                consumption = shiftsLeft + 9;
            }
            else if (shiftsLeft == 0)
            {
                consumption = 7.5;
            }
            if (weight > 150)
            {
                consumption *= 1.35;
            }
            return consumption;
        }
    }

    class Queen: Bee
    {
        private Worker[] workers;
        private int shiftNumber = 0;

        public Queen(Worker[] workers, double weight):base(weight)
        {
            this.workers = workers;
        }

        public override double getHoneyConsumption()
        {
            double consumption = 0;
            int shifts = 0;
            int working = 0;
            foreach (Worker worker in workers)
            {
                if (worker.ShiftsLeft > shifts)
                {
                    shifts = worker.ShiftsLeft;
                }
                if (worker.ShiftsLeft > 0)
                {
                    working++;
                }
            }
            consumption += shifts + 9;
            if (working <= 2)
            {
                consumption += 20;
            }
            else
            {
                consumption += 30;
            }
            return consumption;
        }
        public bool assignWork(string job, int numberOfShifts)
        {
            foreach (Worker worker in workers)
            {
                if (worker.doThisJob(job, numberOfShifts))
                {
                    return true;
                }
            }
            return false;
        }
        public string workTheNextShift()
        {
            double consumption = getHoneyConsumption();
            foreach (Worker worker in workers)
            {
                consumption += worker.getHoneyConsumption();
            }
            shiftNumber++;
            string report = "シフト#" + shiftNumber + "のレポート\r\n";
            for (int i = 0; i < workers.Length; i++)
            {
                Worker worker = workers[i];
                if (worker.workOneShift())
                {
                    report += "働き蜂#" + (i + 1) + "の作業は完了しました。\r\n";
                }
                if (String.IsNullOrEmpty(worker.CurrentJob))
                {
                    report += "働き蜂#" + (i + 1) + "は作業がありません。\r\n";
                }
                else
                {
                    if (worker.ShiftsLeft > 0)
                    {
                        report += "働き蜂#" + (i + 1) + "'" + worker.CurrentJob +
                            "'の作業中で、あと" + worker.ShiftsLeft +
                            "つのシフトがあります。\r\n";
                    }
                    else
                    {
                        report += "働き蜂#" + (i + 1) + "はこのシフトで'" +
                            worker.CurrentJob + "'の作業を完了します。\r\n";
                    }
                }
            }
            report += "消費したすべての蜂蜜の量: " + consumption + "単位\r\n";
            return report;
        }
    }

    class Worker : Bee
    {
        private string[] jobsICanDo;
        private string currentJob = "";
        private int shiftsToWork;
        private int shiftsWorked;

        public Worker(string[] jobsICanDo, double weight):base(weight)
        {
            this.jobsICanDo = jobsICanDo;
        }

        public string CurrentJob
        {
            get { return currentJob; }
        }
        public override int ShiftsLeft
        {
            get { return shiftsToWork - shiftsWorked; }
        }

        public bool doThisJob(string job, int numberOfShifts)
        {
            if (!String.IsNullOrEmpty(currentJob))
            {
                return false;
            }
            foreach (string jobICanDo in jobsICanDo)
            {
                if (jobICanDo == job)
                {
                    currentJob = job;
                    shiftsToWork = numberOfShifts;
                    shiftsWorked = 0;
                    return true;
                }
            }
            return false;
        }
        public bool workOneShift()
        {
            if (String.IsNullOrEmpty(currentJob))
            {
                return false;
            }
            shiftsWorked++;
            if (shiftsWorked > shiftsToWork)
            {
                shiftsWorked = 0;
                shiftsToWork = 0;
                currentJob = "";
                return true;
            }
            return false;
        }
    }
}

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