I still want copy&paste tool

Hydras can reuse a little compactified polar bear.
It's a somewhat tedious to replicate polar bear again...
Idea: numbers 2 and 3 are unused now.
Make 2 - enable/disable selection mode and 3 copy/paste.
When you press 2 you can select, move around and copy rectangular area.
When you press 2 again - you exit selection mode.
When you press 3, if selection mode is enabled and there is selection - it is copied
into internal clipboard. If there is no selection and there is something in
internal clipboard - whole thing should be displayed instead of
mouse cursor, and placed into grid on click. Pressing 3 again
while it isn't placed into grid should cancel it.
Don't worry, copy-paste is still on my list - the biggest thing on my list, now that the level editor is done.
Mjau suggested something
very similar to your idea a page back. At the time, it was the best idea I'd heard; since then, I've done a bit more thinking about it. And - well - I think we've all been overlooking the obvious.
How do you select something? In a word-processing program, a browser, whatever...?
You click and drag!
I complained earlier that you couldn't just use click-and-drag to select things, because 'it was already taken' by the delete function. But there's no real reason that
delete couldn't be moved to a tool (and/or a modifier, like shift or ctrl), and
select/copy/move be moved to the 'neutral' mouse click/drag!
The main thing that's stopping me from doing this is that it's kinda boring. But it
should be boring. Your approach, or mjau's, practically requires a tutorial to understand. (Or a fair bit of tinkering.) A tutorial! For
copy and paste! Copy-and-paste is a function so basic, so simple, that it
should be boring - completely unnoticable to the player.
Q: "How do you copy and paste in Manufactoria?"
A1: "You select things, you hit ctrl-c, you hit ctrl-v. What do you mean?"
A2: "When you press 2 you can select, move around and copy rectangular area.
When you press 2 again - you exit selection mode.
When you press 3, if selection mode is enabled and there is selection - it is copied
into internal clipboard. If there is no selection and there is something in
internal clipboard - whole thing should be displayed instead of
mouse cursor, and placed into grid on click. Pressing 3 again
while it isn't placed into grid should cancel it."
I'm being a bit unfair there, but I think the point is sound...
(Don't take offense - your idea is perfectly reasonable, it's something I was thinking about earlier. I'm just using this as an excuse to air my current ideas about it, see if there are any gaping holes.)
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Also, I've been updating Manufactoria subtly and stealthily, as usual. Fixed a few bugs in the level-editor (I'm pretty disappointed that no-one reported them, actually), and added a new tutorial-thing to explain branches in a bit more detail. (Bonus: A solution to a level that doesn't exist!)