gai-godot-games/pathfinding-algorithms/scenes/custom-solver/custom_graph_solver.gd

extends Node2D

@export var navigation_polygon: Array[Polygon2D] = []

@onready var graph: NavigationGraph = $NavGraph
@onready var character: CharacterBody2D = $CharacterBody2D

var seleted_polygon: int = 0


func _ready() -> void:
	for polygon in navigation_polygon:
		polygon.hide()

	update_polygon()


func update_polygon():
	var polygons: Array[PackedVector2Array] = Geometry2D.decompose_polygon_in_convex(navigation_polygon[seleted_polygon].polygon)
	graph.erase_and_create_nodes_from_polygons(polygons)


func _process(delta: float) -> void:
	# check for left and right arrow keys to change the selected polygon (0, len(navigation_polygon)-1)
	if Input.is_action_just_pressed("ui_right"):
		seleted_polygon += 1
		if seleted_polygon >= len(navigation_polygon):
			seleted_polygon = 0
		update_polygon()

	if Input.is_action_just_pressed("ui_left"):
		seleted_polygon -= 1
		if seleted_polygon < 0:
			seleted_polygon = len(navigation_polygon) - 1
		update_polygon()

	if Input.is_action_just_pressed("draw_toggle_polygon"):
		graph.draw_polygons = !graph.draw_polygons
	if Input.is_action_just_pressed("draw_toggle_nodes") or Input.is_action_just_pressed("draw_toggle_edges"):
		graph.draw_nodes = !graph.draw_nodes
		graph.draw_edges = !graph.draw_edges