How do I maintain an object position when moving it to another layer?

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- InadequateChris
- - Joined 2 Dec, 2020
  - 19 topics • 44 posts
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- 12 Apr, 2021
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Hello!

I have an object on a parallax layer, and when I move it to a layer that has no parallax, it (of course) suddenly changes position due to the layers behaving differently.

Is there a way to get it on to the non-parallax layer that maintains its on-screen position, please?
Tagged:

construct3
layer
object
parallax
position
- newt
- - Joined 12 Nov, 2008
  - 396 topics • 10,741 posts
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- 12 Apr, 2021
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The parallax setting is based on a percentage of the non parallax xy's.

Do you know how to figure percentages?
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- InadequateChris
- - Joined 2 Dec, 2020
  - 19 topics • 44 posts
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- 12 Apr, 2021
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I do, but I'm not sure how I'd apply it in this particular problem.

My best guess so far has been:

-> inventoryItem: Move to layer "UI"

-> inventoryItem: Set position to (Self.X - LayerParallaxX("Background"), Self.Y - LayerParallaxY("Background"))

I'm aware there are no percentages here, just stuck as to how I'd use them!
- AllanR
- - Joined 21 Nov, 2013
  - 5 topics • 1,429 posts
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- 12 Apr, 2021
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I would use LayerToCanvas X/Y to get the coordinates on the current layer, then CanvasToLayer X/Y to get to the new layer at the equivalent position.
- newt
- - Joined 12 Nov, 2008
  - 396 topics • 10,741 posts
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- 12 Apr, 2021
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Yeah I was just thinking that might be a better way to go.
- InadequateChris
- - Joined 2 Dec, 2020
  - 19 topics • 44 posts
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- 12 Apr, 2021
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Thanks guys, I hadn't heard of the Canvas To Layer function before. After a bit of digging I've got it working using this code:

-> inventoryItem: Set position to (CanvasToLayerX("UI", LayerToCanvasX("Characters", inventoryItem.X, inventoryItem.Y), LayerToCanvasY("Characters", inventoryItem.X, inventoryItem.Y)), CanvasToLayerY("UI", LayerToCanvasX("Characters", inventoryItem.X, inventoryItem.Y), LayerToCanvasY("Characters", inventoryItem.X, inventoryItem.Y)))

-> inventoryItem: Move to layer "UI"