kadai3-1-dobuzora

kadai3/dobuzora/.gitignore

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+_bin

kadai3/dobuzora/README.md

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+題課3-1
+===
+
+タイピングゲームを作ろう
+- 標準出力に英単語を出す
+- 標準入力から1文字受け取る
+- 制限時間内に何問解けたかを表示する
+
+## Install
+```
+export GOBIN=`pwd`/_bin
+go install github.com/gopherdojo/dojo6/kadai3/dobuzora/cmd/type-game
+_bin/cmd
+```
+
+

kadai3/dobuzora/cmd/type-game/main.go

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+package main
+
+import (
+	"os"
+
+	"github.com/gopherdojo/dojo6/kadai3/dobuzora/internal/game"
+)
+
+const timeLimit = 10
+
+var (
+	reader    = os.Stdin
+	writer    = os.Stdout
+	questions = []string{"public", "void", "func", "return", "continue", "for", "go", "float"}
+)
+
+func main() {
+	g := game.New(reader, writer, timeLimit, questions)
+	g.Play()
+}

kadai3/dobuzora/go.mod

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+module github.com/gopherdojo/dojo6/kadai3/dobuzora
+
+go 1.12

kadai3/dobuzora/internal/game/game.go

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+/*
+Package game implements typing game for terminal.
+*/
+package game
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"io"
+	"math/rand"
+	"time"
+)
+
+type Game struct {
+	r                io.Reader
+	w                io.Writer
+	timeLimit        time.Duration
+	questions        []string
+	answerNum        int
+	correctAnswerNum int
+}
+
+// New for game package
+func New(reader io.Reader, writer io.Writer, timeLimit time.Duration, questions []string) *Game {
+	return &Game{
+		r:         reader,
+		w:         writer,
+		timeLimit: timeLimit,
+		questions: questions,
+	}
+}
+
+// Play is to start type game.
+func (gm *Game) Play() {
+	gm.displayRule()
+	gm.shuffleQuestion()
+	gm.playGame()
+}
+
+// displayRule is to display rules of type game.
+func (gm *Game) displayRule() {
+	fmt.Fprintf(gm.w, "画面に表示される英単語を入力しましょう!")
+	fmt.Fprintf(gm.w, "制限時間は%dです\n", gm.timeLimit)
+}
+
+// playGame is type-game core logic.
+func (gm *Game) playGame() {
+	bc := context.Background()
+	ctx, cancel := context.WithTimeout(bc, gm.timeLimit*time.Second)
+	defer cancel()
+
+	ch := gm.input()
+
+gameLoop:
+	for i := 0; i < len(gm.questions); i++ {
+		question := gm.questions[i]
+		fmt.Fprintf(gm.w, "%d問目: %s\n", i+1, question)
+		fmt.Fprint(gm.w, ">")
+
+		var in string
+		var ok bool
+		select {
+		case in, ok = <-ch:
+			if !ok {
+				break gameLoop
+			}
+			gm.answerNum++
+		case <-ctx.Done():
+			break gameLoop
+		}
+
+		if in == question {
+			gm.correctAnswerNum++
+			fmt.Fprint(gm.w, "正解！")
+		} else {
+			fmt.Fprint(gm.w, "不正解...")
+		}
+		fmt.Fprintf(gm.w, " 現在の正答率:%d/%d\n", gm.correctAnswerNum, gm.answerNum)
+	}
+}
+
+// displayResult is to display the result of type game.
+func (gm *Game) displayResult() {
+}
+
+// shuffleQuestion is to shuffle given questions of typing game.
+func (gm *Game) shuffleQuestion() {
+	n := len(gm.questions)
+	for i := n - 1; i >= 0; i-- {
+		j := rand.Intn(i + 1)
+		gm.questions[i], gm.questions[j] = gm.questions[j], gm.questions[i]
+	}
+}
+
+func (gm *Game) input() <-chan string {
+	ch := make(chan string)
+	go func() {
+		sc := bufio.NewScanner(gm.r)
+		for sc.Scan() {
+			ch <- sc.Text()
+		}
+		close(ch)
+	}()
+	return ch
+}