Sprite x y coordinates use the centre, not upper left of sprite

[kristhorsteinssonf4y]

Hi,
When I set the x, y coordinates of the sprites on the canvas they locate as if the x, y was the centre of the sprite, not the upper left corner. All my sprite are offset up and to the left from the intended locations. To test this I created a 50 x 50 px dot at 0, 0 on the 300 x 225 px canvas. See screenshot. Which is the correct definition of x & y sprite properties?
Thx!

[muneer]

As far as I remember, this has always been the case.

[kristhorsteinssonf4y]

Maybe I’ve been reading the description wrong. I think Swift uses the centre of the imagesprite, while AI2 uses the top / left corner for 0, 0. I interpreted the Thunkable documentation like the latter. Screenshot from Thunkable Docs:

[muneer]

See this old post talking about the same issue. I know what is written in the docs is not the same but this post will reconfirm my point.

Sprite positioning when canvas loads

Sprites use the midpoint for coords. If you try to put them half off the canvas, strange things happen.

[kristhorsteinssonf4y]

Thanks, I’ll convert my sprite location coordinates to the midpoint.

[jared]

Is this a platform specific issue? Do you see the same behavior on iOS that you do on android? I feel like I’ve used it on iOS in this wasn’t the case but it’s been quite some time

[muneer]

@jared

Do you see the same behavior on iOS that you do on android?

I use Android but at that time when we discussed this issue I am certain that both @tatiang and @catsarisky were using iPhones.