alt+drag copies instead of moving.

[Sebanisu]

Currently left click drag moved what ever you selected.

Checking for modifier key of alt can trigger a copy mode instead.

So this would probably need to set a flag. We then would need to copy the clicked values. We'd need to probably add to both the front and back vectors. The front vector would be needed so you know what to draw on the screen. The back would be the for tracking the new location.

• I'd probably append the copies to the end of the tile vectors to the end.
• Someone might want the copy to be prepend to the start of the tile vectors.
• Or maybe they'd rather them get inserted into the vector after the current indexes. so like if we copied tile 1 the new copy would be tile 2.
• Or maybe they'd rather them get inserted into the vector before the current indexes. so like if we copied tile 1 the new copy would be tile 1 and the existing would become tile 2.

So maybe we need to have a drop down to ask this to to them what the desired method you want is.