How to create Navigation polygon that will work

system · August 6, 2017, 10:35pm


	Attention	Topic was automatically imported from the old Question2Answer platform.
	Asked By	Daniel Lewan
	Old Version	Published before Godot 3 was released.

I’m trying to use Tiled import plugin by @vnen to import tilemap into Godot. It seems that Godot can handle multiple layers of tiles with collison (multiple tilemaps) but only one layer of tiles is used as navigation polygon.

I wrote post import script that merge all navigation polygons from tilemaps into one big navigation polygon. It generates polygons correctly but they are not working. It seems that vertices are in correct position but navigation polygons are not closed (they are not filled with blue)

Is there any set of rules how navigation polygons should be connected/created to work?

Imgur

Here is simpler case: four tiles, each of them have simple navigation polygon that covers whole surface. (Ignore the offset, that’s bug in post-import script I guess)

Imgur

Here is my post-import script:

gist.github.com

https://gist.github.com/TeddyDD/a5b9315250b6c9eba314347eb806dfc2

import.gd

tool
extends Reference

const MARGIN = 10

func post_import(scene):
#	scene = scene.duplicate()
	# create nav poly
	var nav = NavigationPolygonInstance.new()
	var nav_poly = NavigationPolygon.new()

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Navigation polygons must be children or grandchildren of a Navigation2D node to work.

aozasori | 2017-08-06 23:30

Yeah I know. I guess I should be more precise. I updated the question

Daniel Lewan | 2017-08-08 22:19

system · August 26, 2017, 8:03pm


	Reply From:	cwookdev

I don’t think navigation polygon support separated shapes. Rather than putting the navigation in one big polygon, try making a new one for each tile. Godot will (should) combine them at runtime.