started work on save structures and data validation

scripts/HelperFuncs.gd

@@ -44,3 +44,25 @@ func only_valid_chars(input_string: String) -> String:
 			valid_chars += char
 	
 	return valid_chars
+
+func checksum(check_data):
+	var mult = 0.0
+	var div : float = 0.0
+	var checksum : float = 0.0
+	var index = 0.0
+	
+	for data in check_data:
+		if data == null:
+			data = TAU
+		if data > div:
+			div = data
+		if index == 0:
+			mult = PI * data
+		checksum += mult * data
+		mult = PI * data
+		print("DATA : ",data," | MULT : ",mult)
+		index += 1
+	
+	checksum = checksum/div
+	print(checksum)
+	return checksum