Created the grammar correction System, and created a helper function to assist with it

Phase2/Godot_Toolset/CodeSandboxes/ToolsetProjectTemplate/Grammar/GrammarTest.gd

@@ -1,43 +1,83 @@
 extends Node2D
 
-# Called when the node enters the scene tree for the first time.
-func _ready():
-	print(checkAndCorrectGrammar("A unicorn is a mythical creature"))
-	print(checkAndCorrectGrammar("An apple a day keeps the doctor away"))
-	print(checkAndCorrectGrammar("An house on the hill."))
-	print(checkAndCorrectGrammar("A egg a day is unhealthy."))
-	print(checkAndCorrectGrammar("An unique idea."))
-
 
 # Called every frame. 'delta' is the elapsed time since the previous frame.
 func _process(delta):
 	pass
 
 
-func checkAndCorrectGrammar(str: String) -> String:
-	var vowels: Array = ["a", "e", "i", "o", "u"]
-	var words: Array = str.split(" ")
-	var correctedStr: String = ""
-	
-	for word in words:
-		var firstChar: String = word[0].to_lower()
-		if firstChar in vowels:
-			if word.substr(0, 2).to_lower() != "an":
-				word = "an " + word
-				print("Changed \"" + word + "\" to \"" + "an " + word + "\"")
-			else:
-				print("Kept \"" + word + "\"")
-			correctedStr += word + " "
-		else:
-			if word.substr(0, 1).to_lower() != "a":
-				if word.substr(1, 1) == "n":
-					word = word.substr(2, word.length())
-					print("Changed \"" + word + "\" to \"" + "a " + word + "\"")
-				else:
-					word = "a " + word
-					print("Changed \"" + word + "\" to \"" + "a " + word + "\"")
-			else:
-				print("Kept \"" + word + "\"")
-				correctedStr += word + " "
 
-	return correctedStr.strip_edges()
+#rebuild_sentence is here to assist with making a human readable sentence, out of the array created in correct_sentence.
+#Example of how to call this function from within another function:
+#
+#var outputString = rebuild_sentence(newWords)
+#
+#	return(outputString)	
+	
+func rebuild_sentence(input_sentance: Array) -> String:
+	var outputString = ""
+	for i in range(input_sentance.size()):
+		outputString += input_sentance[i] + " "
+
+	return outputString
+
+
+#correct_sentances will output a modified string array, based on the sentance String that you input.
+#
+#Here is what is outputed from the following function calls.
+#
+#	print(correct_sentence("An unicorn is an mythical creature"))
+#	print(correct_sentence("A apple a day keeps an doctor away"))
+#	print(correct_sentence("An hour"))
+#	print(correct_sentence("Eating seeds as an passtime activity..."))
+#	print(correct_sentence("Wake Up... Grab an brush and put on a little makeup..."))
+#
+#	["A", "unicorn", "is", "a", "mythical", "creature"]
+#	["A", "apple", "a", "day", "keeps", "a", "doctor", "away"]
+#	["An", "hour"]
+#	["Eating", "seeds", "as", "a", "passtime", "activity..."]
+#	["Wake", "Up...", "Grab", "a", "brush", "and", "put", "on", "a", "little", "makeup..."]
+
+
+func correct_sentence(input_string: String) -> String:
+	var words = input_string.split(" ")
+	var newWords = words
+	var articleList = ["a", "an", "A", "An"]
+	var exceptionsListForAn = ""
+	var exceptionsListForA = ""
+	var exceptionsList = ["hour"]
+
+#	One Potential Addition, could be that we make an exception list for words that should be prefixed with A, and another one for words that should be prefixed with An
+
+# 	Start Filtering the words
+	for i in range(words.size()):
+		var current_word = words[i]
+		var first_character = current_word.substr(0, 1).to_lower()
+
+#	Correct Every Word after the first word.
+		if i > 1:
+			var last_word = words[i-1]
+
+			if current_word != last_word:
+				if articleList.has(last_word):
+					if first_character.match("[aeiouAEIOU]") or exceptionsList.has(last_word):
+						newWords[i-1] = "an"
+					else:
+						newWords[i-1] = "a"
+
+#	Correcting the first word of the string now.
+		if words[0] != words[1]:
+			if articleList.has(words[0]):
+				var nextWordFirstChar = words[1].substr(0, 1).to_lower()
+				if nextWordFirstChar.match("[aeiouAEIOU]") or exceptionsList.has(words[1]):
+					newWords[0] = "An"
+				else:
+					newWords[0] = "A"
+
+	var outputString = rebuild_sentence(newWords)
+	
+	return(outputString)
+
+
+func _ready():
+	print(correct_sentence("Eating seeds as an passtime activity..."))