very basic UI

main/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strconv"
+	"git.chromaticdragon.app/kistaro/auctionsim/auctionsim"
+)
+
+func main() {
+	num := 1000
+	if len(os.Args) > 1 {
+		n, err := strconv.ParseInt(os.Args[1], 0, 64)
+		if err != nil {
+			log.Fatalf("can't parse %q as a number of bidders: %v", os.Args[1], err)
+		}
+		num = n
+	}
+	if num <= 1 {
+		log.Fatalf("can't run an auction with %d bidders", num)
+	}
+
+	price, bidder := auctionsim.RunAuction(
+		auctionsim.CappedBidderGenerator{
+			G: auctionsim.NormalestBidderGenerator(),
+			Lim: num,
+		},
+	)
+
+	delta := bidder.Value - price
+	valueStr := "gaining nothing"
+	if delta > 0 {
+		valueStr = fmt.Sprintf("gaining ¤%f", delta)
+	}
+	if delta < 0 {
+		valueStr = fmt.Sprintf("losing ¤%f", -delta)
+	}
+
+	fmt.Printf("The auction winner paid ¤%f, %s.\n", price, valueStr)
+	fmt.Printf("The item was worth ¤%f to them.\n", bidder.Value)
+	fmt.Printf("They would have paid up to ¤%f for it.\n", bidder.BidCeiling())
+}