Show the shape of a Area2D's collider in-game

[kloot]

Godot Version

4.2.1

Question

I have a Area2D with a CollisionPolygon2D child. I’m trying to show the shape of this Area2D in-game by assigning it a color or a texture (not for debug purposes but for actual in-game use).

I see lots of folks have tried to do this, but I have not been able to get it to work:
https://godotforums.org/d/18855-how-to-give-a-color-to-area2d

How to paint CollisionShape2d in Area2D?

Attention Topic was automatically imported from the old Question2Answer platform. Asked By lai32290 Hi guys, I’m creating a paiting game, so I have the image as the background, and I wanna create some Area2D as paiting area. And when I click on the Area2D, it should paint the CollisionShape2D with the selected color. How can I paint CollisionShape2D?

Thanks

[sancho2]

I can’t see why it didn’t work.
If it is a rectangle area then just add a ColorRect as a child of the Area2D and set the size and extents the same as the CollisionShape2D.

[kloot]

@kloot

CollisionPolygon2D

The problem is that it’s not a rectangle but a CollisionPolygon2D (with quite a complex polygon shape).

[supernovafiles]

I think you can use _draw method for this case.

[kloot]

Thank you @supernovafiles, I was able to do the following (C#):

public override void _Draw()
{
base._Draw();
DrawColoredPolygon(myCollisionPolygon2D.Polygon, highlightColor);
}