How to transform a coordinate to a local coordinate system?

Teflo

Hello! So I have a position on my map/world and I wanna know the position relative to a Node2D. So for example I wanna know the position relative to the player. The player can be flipped though (scale.x set to -1).

My idea was to get the global_transform from both nodes, and use xform() and xform_inv() to calculate from one system to the other, but this doesn't really work out.

Here is a really basic graphic, which hopefully helps to understand what I mean:

Teflo

Ok I found a little trick. It's not exactly what I wanted but it's ok for what I needed.

I take the common parent of both parents (manually here, but I'm sure there're ways to find it programmatically). Then I can take the relative transform from both nodes to the parent and calculate the delta vector

var t1 = bone1.get_relative_transform_to_parent(common_parent)
var t2 = bone2.get_relative_transform_to_parent(common_parent)

var p1 = t1.xform(Vector2(0, 0))
var p2 = t2.xform(Vector2(0, 0))

var d = p1 - p2

Just in case anyone else needs this.