1 files changed, 72 insertions, 0 deletions
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..d6e70f6
--- /dev/null
+++ b/main.go
@@ -0,0 +1,72 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"math/rand"
+	"time"
+)
+
+func main() {
+	numPlayers := flag.Int("n", 2, "Number of players")
+	sides := flag.Int("sides", 6, "How many sides the die should have")
+	flag.Parse()
+
+	if *numPlayers < 2 {
+		log.Fatalf("we need at least 2 players")
+	}
+
+	if *sides < 2 {
+		log.Fatalf("die needs at least two sides")
+	}
+
+	fmt.Println("Welcome to the game")
+	fmt.Printf("There are %d players, each with a %d-sided die\n", *numPlayers, *sides)
+
+	game(*numPlayers, *sides)
+}
+
+type Score struct {
+	id    int
+	score int
+}
+
+// The player with the lowest score wins.
+func game(numPlayers, faces int) {
+	// Get the game's winning number by throwing the die once.
+	winningNumber := throwDie(faces)
+
+	// The scores channel communicates the number of turns a
+	// player took to hit the winning number.
+	scores := make(chan Score)
+
+	for i := range numPlayers {
+		id := i + 1
+		fmt.Printf("Player %d start!\n", id)
+
+		// Spawn a player.
+		go func() {
+			var score int
+
+			// Start rolling the dice!
+			for {
+				score++
+				outcome := throwDie(faces)
+				if outcome == winningNumber {
+					scores <- Score{id: id, score: score}
+				}
+
+				time.Sleep(1 * time.Second)
+			}
+		}()
+	}
+
+	for score := range scores {
+		fmt.Printf("%v\n", score)
+	}
+}
+
+func throwDie(faces int) int {
+	return rand.Intn(faces) + 1
+}