Godot 4, PixelDream Line2D node for better line width and anti-aliasing.

pd_line_2d.gd

@tool
class_name PDLine2D extends Node2D

@export var points: Array[Vector2i] = []:
	set(value):
		points = value
		queue_redraw()
		
@export var color: Color = Color.WHITE:
	set(value):
		color = value
		queue_redraw()
		
@export var width: float = -1:
	set(value):
		width = value
		queue_redraw()
		
@export var antialiasing: bool = false:
	set(value):
		antialiasing = value
		queue_redraw()

func _draw() -> void:
	var last_point = null
	
	for point in points:
		if last_point != null:
			draw_line(last_point, point, color, width, antialiasing)
		last_point = point