Added word lists, generate random target words, only accept guesses that are valid words

project.godot

@@ -14,6 +14,10 @@ config/name="godot-wordle"
 run/main_scene="res://src/Main.tscn"
 config/icon="res://icon.png"
 
+[autoload]
+
+Global="*res://src/Global.gd"
+
 [display]
 
 window/size/width=640

src/Global.gd

@@ -0,0 +1,59 @@
+extends Node
+
+
+const MIN_LENGTH := 5
+const MAX_LENGTH := 5
+const GENERABLE_WORDS_FILENAME = "res://words/popular-filtered.txt"
+const ALL_WORDS_FILENAME := "res://words/enable1.txt"
+
+
+var generable_words: Dictionary
+var all_words: Dictionary
+
+
+func _ready() -> void:
+	randomize()
+	generable_words = parse_words(GENERABLE_WORDS_FILENAME, MIN_LENGTH, MAX_LENGTH)
+	all_words = parse_words(ALL_WORDS_FILENAME, MIN_LENGTH, MAX_LENGTH)
+
+
+func parse_words(filename: String, min_len: int, max_len: int) -> Dictionary:
+	var dict := {}
+	for i in range(min_len, max_len + 1):
+		dict[i] = []
+
+	var file := File.new()
+	var error := file.open(filename, File.READ)
+	assert(not error)
+	while not file.eof_reached():
+		var line := file.get_line()
+		var length = line.length()
+		if length < min_len || length > max_len:
+			continue
+		dict[length].append(line.to_upper())
+	file.close()
+
+	for key in dict.keys():
+		print(key, ": ", dict[key].size())
+
+
+	return dict
+
+
+func generate_word(length: int, random_seed = null) -> String:
+	if typeof(random_seed) == TYPE_INT:
+		seed(random_seed)
+
+	var words_list := generable_words[length] as Array
+
+	return words_list[randi() % words_list.size()]
+
+
+func is_valid_word(word: String) -> bool:
+	var length := word.length()
+	if length < MIN_LENGTH or length > MAX_LENGTH:
+		return false
+
+	var words_list := all_words[length] as Array
+
+	return word.to_upper() in words_list

src/Main.gd

@@ -27,7 +27,7 @@ func _ready() -> void:
 			$C/V/LetterGrid.add_child(letter)
 		letters.append(letter_array)
 
-	target_word = "godot".to_upper()
+	target_word = Global.generate_word(letter_count)
 	current_guess = 0
 
 
@@ -48,6 +48,9 @@ func guess_entered(guess: String) -> void:
 	if guess.length() != letter_count:
 		show_error("Word must be five characters.")
 		return
+	if not Global.is_valid_word(guess):
+		show_error("Not a recognized word.")
+		return
 
 	var letters_remaining = []
 	for letter in target_word: