When adding objects, while holding the control key, the top left corner (presumably a different corner if a different drawing direction is selected for the map) snaps to the grid. I have some objects with a width that’s not evenly divisible by the width of a tile. Is there any simple way to align the center of an object with the grid, rather than a corner? I can of course calculate the correct position, just wondering if there’s something faster than doing that for every object.
I have many objects that are different sizes, so unfortunately setting an offset for the entire tileset doesn’t help.
For Tile Objects, you can set the Object Alignment to Center in the Tileset Properties. This will make the tiles centre on the object’s position, which will have the cosmetic effect of snapping to the center. (By default, they snap to the bottom left corner, except on isometric maps).
For all other Object types, no, I don’t think you can control the snapping alignment. You could write a Tiled script that snaps selected Objects’ centres, or a custom scripted tool for moving Objects.