Added advantage and disatvantage options

main.go

@@ -4,25 +4,50 @@ import (
 	"flag"
 	"fmt"
 	"math/rand"
+	"os"
 	"time"
 )
 
+var (
+	surfaces, modifier, diceThrows, attacks int
+	advantage, disadvantage                 bool
+)
+
 func main() {
-	var surfaces, modifier, diceThrows, attacks int
 
 	rand.Seed(time.Now().Unix())
-	flag.IntVar(&surfaces, "s", 20, "Specify amount of die surfaces")
-	flag.IntVar(&diceThrows, "t", 1, "Specify dice diceThrows")
-	flag.IntVar(&modifier, "m", 0, "Stat modifier")
-	flag.IntVar(&attacks, "a", 1, "Attacks")
-	flag.Parse()
+	ParseFlags()
 
+	switch {
+	case advantage:
+		fmt.Println("Advantage")
+		fmt.Println(Advantage(SimpleCast(), SimpleCast()))
+	case disadvantage:
+		fmt.Println("Disadvantage")
+		fmt.Println(Disadvantage(SimpleCast(), SimpleCast()))
+	case attacks < 1:
+		fmt.Println("Attack amount cannot be below 1.")
+		os.Exit(1)
+	case attacks > 1:
 		for i := 0; i < attacks; i++ {
-		if attacks > 1 {
 			fmt.Println()
-		}
 			Cast(surfaces, diceThrows, modifier)
 		}
+	default:
+		Cast(surfaces, diceThrows, modifier)
+	}
+}
+
+func ParseFlags() {
+	flag.IntVar(&surfaces, "surfaces", 20, "Specify amount of die surfaces")
+	flag.IntVar(&diceThrows, "throws", 1, "Specify dice diceThrows")
+	flag.IntVar(&modifier, "modifier", 0, "Stat modifier")
+	flag.IntVar(&attacks, "attacks", 1, "Attacks")
+
+	flag.BoolVar(&advantage, "advantage", false, "Advantage")
+	flag.BoolVar(&disadvantage, "disadvantage", false, "Disadvantage")
+
+	flag.Parse()
 }
 
 func Cast(dieSurfaces, castAmount, modifier int) {
@@ -48,3 +73,27 @@ func Cast(dieSurfaces, castAmount, modifier int) {
 		fmt.Println(total)
 	}
 }
+
+func SimpleCast() int {
+	return rand.Intn(20) + 1
+}
+
+func Advantage(x, y int) int {
+	fmt.Println("x:", x)
+	fmt.Println("Y:", y)
+	if x > y {
+		return x
+	} else {
+		return y
+	}
+}
+
+func Disadvantage(x, y int) int {
+	fmt.Println("x:", x)
+	fmt.Println("Y:", y)
+	if x < y {
+		return x
+	} else {
+		return y
+	}
+}