Set Z-Order of Sprites and TiledBackgrounds.

the quickest way I could think of was to throw all the y values in an array (along with the UID and "type") and then sort the array. Then loop through the array picking the appropriate object by UID and moving it to the top. That way it can all be done in one pass.

I added the player object as well, and call the sort function whenever the player is moving (no need to constantly resort if nothing is changing).

https://www.rieperts.com/games/forum/Zsort.c3p

I updated the link soon before you posted and a few minutes after you posted. I didn't think of using an array. I will probably try to use an array similar to yours. I don't use arrays often so a small bit of your C3P confuses me. I will test them all for best performance though by setting Framerate mode to unlimited ticks. Thank you for the idea.

I'm not sure if this is exactly what you're after but see my comment in this thread: construct.net/en/forum/construct-3/how-do-i-8/sort-layer-ordering-top-down-155027

the array is two dimensional - each row holds the y coordinate of the object, the UID of the object, and the object type (P for Player, B for Background family, O for Object family).

when you sort an array by the x axis, it will sort each row by what is in the first column (that is why I put the y coordinate in first).

at the start of the Sort function I set the array size to (0,3,1). That clears the array, and leaves room for three columns on each row.

For each object, we push it's y coordinate to the front of the array (which is row 0, column 0). Then we add the UID and type to columns 1 and 2.

once all the objects are in the array, we sort it by the x axis. That will put the lowest y coordinate at the top, and the highest y coordinate at the bottom of the array - which is how we want the objects arranged on the screen.

then we read through the array, bringing each object to the top of the layer. So, in the end, we only loop through each family once, and the final array once.