feat: vet the number of players

1 files changed, 8 insertions, 0 deletions

diff --git a/main.go b/main.go
index c2f007f..686981b 100644
--- a/main.go
+++ b/main.go
@@ -16,6 +16,14 @@ func main() {
 	numPlayers := flag.Int("p", 2, "Number of players")
 	flag.Parse()
 
+	// Believe it or not, one player still makes for a valid game,
+	// since that player simply checks in with the main goroutine,
+	// who simply sends the ball back to it.
+	if *numPlayers < 1 {
+		log.Fatalf("Invalid number of players: %d", *numPlayers)
+	}
+
+	// Launch the game!
 	game(*numSecs, *numPlayers)
 }