extends Node2D
class_name DebugDraw

var points: PackedVector2Array
var polygon: PackedVector2Array

func _draw() -> void:
	points = Globals.get_exception_points()
	var i := 0
	while i < points.size():
		var slice := points.slice(i, i+4)
		draw_line(slice[0], slice[1], Color.GREEN, 1.0, true)
		draw_line(slice[1], slice[2], Color.GREEN, 1.0, true)
		draw_line(slice[2], slice[3], Color.GREEN, 1.0, true)
		draw_line(slice[3], slice[0], Color.GREEN, 1.0, true)
		i += 4
	
	polygon = Globals.get_polygon_points()
	for j in polygon.size():
		if j+1 > polygon.size()-1:
			draw_line(polygon[j], polygon[0], Color.RED, 1.0, true)
		else:
			draw_line(polygon[j], polygon[j+1], Color.RED, 1.0, true)

func _process(_d: float) -> void:
	var current := Globals.get_exception_points()
	if current != points:
		queue_redraw()
	current = Globals.get_polygon_points()
	if current != polygon:
		queue_redraw()