use struct field rather than global var

Makefile

@@ -1,4 +1,4 @@
-VERSION = 0.0.3
+VERSION = 0.0.4
 SOURCE = ./...
 
 .DEFAULT_GOAL := build

main.go

@@ -122,7 +122,7 @@ func (w *wordle) run() {
 	w.write(fmt.Sprintf("Guess a %v-letter word within %v guesses...\n", w.wordLength, w.maxGuesses))
 
 	for guessCount := 0; guessCount < w.maxGuesses; guessCount++ {
-		w.write(fmt.Sprintf("\nGuess (%v/%v): ", len(w.guesses)+1, maxGuesses))
+		w.write(fmt.Sprintf("\nGuess (%v/%v): ", len(w.guesses)+1, w.maxGuesses))
 
 		reader.Scan()
 		guess := strings.ToUpper(reader.Text())
@@ -132,7 +132,7 @@ func (w *wordle) run() {
 		}
 
 		if len(guess) != len(w.word) {
-			w.write(fmt.Sprintf("%s is not a %v-letter word. Try again...\n", guess, wordLength))
+			w.write(fmt.Sprintf("%s is not a %v-letter word. Try again...\n", guess, w.wordLength))
 			guessCount--
 		}
 
@@ -144,7 +144,7 @@ func (w *wordle) run() {
 			break
 		}
 
-		if guessCount == maxGuesses-1 {
+		if guessCount == w.maxGuesses-1 {
 			fmt.Println()
 			w.displayRow(w.word, w.getLetterTileColors(w.word))
 			os.Exit(1)