Trails.gd

1	extends Node2D
2	class_name Trails
3
4	export var trails_length = 400
5	export var gradient: Gradient
6	export var alpha = 1.0
7	onready var trails = $CanvasLayer/Trails
8
9	func _ready() -> void:
10	trails.gradient = gradient
11	trails.points = PoolVector2Array([])
12
13	func _process(_delta: float) -> void:
14	trails.modulate = Color(1,1,1,alpha)
15
16	func add_position(pos: Vector2) -> void:
17	var points = trails.points
18	var should_add = points.size() == 0
19	if points.size() > 0:
20	var last_added = points[-1]
21	var dist_to_last_added = pos.distance_to(last_added)
22	should_add = dist_to_last_added > 1
23	if should_add:
24	points.append(pos)
25	while points.size() > trails_length:
26	points.remove(0)
27	trails.points = points
28
29	func clear() -> void:
30	trails.points = []