hello !
here is a schematic of what i want.
http://imgur.com/gallery/tfpirvn
this is a top down shooter.
i found this but its unclear to me on how to use it,
CanvasToLayerX("sol",LayerToCanvasX("paralax3", spawnership.x, spawnership.y) ,LayerToCanvasY("paralax3", spawnership.x, spawnership.y))
...
thanks for help !!!!
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edit : my mistake : layer "sol" is parallax (100,100), not (0,0).