extends Node2D

func _ready():
	var physics_tilemap = $Fence
	var navigation_tilemap = $Grass
	var tile_set = physics_tilemap.tile_set
	if not tile_set:
		print("Failed to find tile_set on physics_tilemap")
		return

	var tile_size = tile_set.get_tile_size()
	var used_rect = physics_tilemap.get_used_rect()
	print(used_rect)

	for x in range(used_rect.position.x, used_rect.size.x):
		for y in range(used_rect.position.y, used_rect.size.y):
			var tile_id = physics_tilemap.get_cell(x, y)
			if tile_id == -1:
				continue
			
			# Get the collision shapes for the current tile
			var collision_shapes = tile_set.tile_get_shapes(tile_id)
			if not collision_shapes:
				continue
			
			# Convert collision shapes into NavigationPolygon cut-outs
			for shape in collision_shapes:
				if shape.shape.is_class("RectangleShape2D"): # assuming rectangle shapes for simplicity
					var rect = Rect2(
						Vector2(x, y) * tile_size, 
						Vector2(shape.shape.extents) * 2
					)
					cut_navigation_polygon(navigation_tilemap, rect)
				# Expand this if-else for other shapes like CircleShape2D, etc.

func cut_navigation_polygon(navigation_tilemap: TileMapLayer, rect: Rect2):
	for nav_polygon in navigation_tilemap.get_children():
		if nav_polygon.is_class("NavigationPolygonInstance"):
			# This is a crude example - in practice, create new polygons to adjust the navigation mesh
			var nav_rect = nav_polygon.get_item_rect()
			if nav_rect.intersects(rect):
				# Here, define logic to cut rect from nav_rect, adjusting navigation mesh
				# Example: Remove affected navigation polygon and recreate it around `rect`
				nav_polygon.remove()  # remove or edit as per your exact cutout needs
				# Note: Fine-tuning would involve more detailed polygon edits or re-creation.