Updated the Tile Stack Editor. I realized quickly that the existence of a selected texture was not a good way to differentiate whether or not a Tile on a certain layer existed. So, it's now controlled with a check box next to the name of the layer. Checking the box adds the tile to the stack, unchecking the box removes it and clears the data out.
I also added a color picker next to the texture picker. Once you turn a layer on, the default color is white. Here you can see I've made the bottom tiles red.
Other minor updates:
- Implemented copy and paste of tile stacks, same as entities
- Implemented 'drag' copy of tiles, holding Ctrl and dragging a tile copies it as you drag the mouse around.
- Implemented 'fine control' drag of entities, holding Ctrl while dragging ignores snap-to-grid entirely.