@tool
extends Node

var letter_to_number = {
	"A": 1, "B": 2, "C": 3, "D": 4, "E": 5,
	"F": 6, "G": 7, "H": 8, "I": 9, "J": 10,
	"K": 11, "L": 12, "M": 13, "N": 14, "O": 15,
	"P": 16, "Q": 17, "R": 18, "S": 19, "T": 20,
	"U": 21, "V": 22, "W": 23, "X": 24, "Y": 25, "Z": 26
}

## ANGLES

# Check if a colliding body is aligned within a given angle of the object
	# max_angle_diff --- note: set to 1 if angle won't be counted
	 # currently only works when objects are scaled (1,1,1)
func angle_velocity_aligned(source:Node, source_angle:Vector3, body:Node, max_angle_diff:Vector3): 
		var obj_direction = source.basis * source_angle
		var player_direction = body.velocity.normalized()
		var diff = abs(abs(obj_direction) - abs(player_direction))
		if diff.x <= max_angle_diff.x and diff.y <= max_angle_diff.y and diff.z <= max_angle_diff.z:
			return true
		else:
			return false

#pass in a dictornary of weighted random choices, returns id of selection
func weighted_random(choices):
	var sum_of_choices = 0.0
	
	#Get sum of all choices
	for i in choices:
		sum_of_choices += choices[i]
	
	var random_number = randf_range(0,sum_of_choices)
	
	for i in choices:
		if random_number < choices[i]:
			return i
		random_number -= choices[i]

func only_valid_chars(input_string: String) -> String:
	var valid_chars = ""
	
	for char in input_string:
		if char.is_valid_identifier():
			valid_chars += char
	
	return valid_chars

func checksum(check_data):
	
	var checksum_array = []
	
	#hash all passed-in data and add to new array
	for data in check_data:
		var hashed_data = hash(data)
		checksum_array.append(hashed_data)
	
	#add together
	var checksum_final = 0
	for num in checksum_array:
		if num is int:
			checksum_final += num
	
	#finally, re-hash
	checksum_final = hash(checksum_final)
	
	return checksum_final

func clear_spawned_objects():
	#clear spawned objects
	for node in get_tree().get_nodes_in_group("spawned"):
		node.queue_free()