Custom class not working with other scripts

Help
,
1

Godot Version

4.5.1

Question

Hi, I’m trying to make a custom class using “class_name” that can be used by other scripts but other scripts wont work with it. Even if I delete all the functions an replace them with a singular variable no other scripts will work with it.

If you share code, please wrap it inside three backticks or replace the code in the next block:

class_name pathfinding


 #Seconadary functions
func get_tile_in_direction(nav_tiles, position: Vector2i, direction: Vector2, vision_radius: int):
	var surrounding = get_surrunding_tile_positions(nav_tiles, position, vision_radius)
	var furthest = get_furthest_tiles(position, vision_radius, surrounding)

	var pos_vec = Vector2(position)
	var angle_pairs = []  # [ {tile, angle_diff} ]

	for tile in furthest:
		var angle_diff = abs(direction.angle_to(pos_vec.direction_to(tile)))
		angle_pairs.append({ "tile": tile, "angle": angle_diff })

	# Find minimum angle
	var min_angle = INF
	for pair in angle_pairs:
		if pair.angle < min_angle:
			min_angle = pair.angle

	# Collect all tiles with that angle
	var candidates = []
	for pair in angle_pairs:
		if abs(pair.angle - min_angle) <= 0.0001:
			candidates.append(pair.tile)

	var destination = candidates.pick_random()
	#print(destination)
	return destination


# Tertiary functions
func get_surrunding_tile_positions(nav_tiles, pos: Vector2i, radius: int,):
	# Gets surrounding tile positions
	var surrounding_tile_positions = []
	for x in range(pos.x - radius, pos.x + radius + 1):
		for y in range(pos.y - radius, pos.y + radius + 1):
			var cell = Vector2i(x, y)
			var cell_data = nav_tiles.get_cell_tile_data(cell)
			if cell_data == null:
				pass
			else:
				if cell_data.get_custom_data("navicable"):
					if cell == pos:
						pass
					else:
						surrounding_tile_positions.append(cell)
						# Debug
						#nav_tiles.set_cell(cell, 1)
	# Returns array of Vector2i
	return surrounding_tile_positions

func get_furthest_tiles(position: Vector2i, vision_radius: int, surrounding_tile_positions: Array):
	var furthest_tiles = []
	for i in surrounding_tile_positions:
		if position.distance_to(i) >= vision_radius:
			furthest_tiles.append(i)
	return furthest_tiles

func get_angles_to_tiles(position: Vector2i, direction: Vector2, furthest_tiles: Array):
	var pos = Vector2(position)
	var angles_to_tiles = []
	
	for i in furthest_tiles:
		var angle_diff = abs(direction.angle_to(pos.direction_to(i)))
		angles_to_tiles.append(angle_diff)
	
	return angles_to_tiles
2

Hi!

How do you access this script?

Have you tried instantiating it as a class?


var pf : Pathfinding = null

func _ready() -> void:
	var pf : Pathfinding = Pathfinding.new()

PS: sorry, Pathfinding should not be capitalized, because you are not capitalizing it after class_name either.

3

I think you need it to extend something. E.g. “extends node” at the top if you dont need stuff from some other class. Could be wrong though.

4

The extends keyword is used together with Nodes, but class_name is used with classes.

Which one you use, depends on what you want. As far as I can tell from your code, these functions don’t depend on any specific Node, but they are just fine being in a script only.

You can try to access the script from another via a class (as shown in my above code snippet).

PS: @baba and @rowanmulhollem, sorry I thought I was addressing rowan.

5

Please explain what you mean by “wont work” give exact error messages, explain what you expected to happen versus what really happens.

6

Never mind I figured it out. I just had to create an instance of the class in the script using a variable. Thanks anyway!

1 Like