Make Mapping Efficient by Copying Shortcuts From A-Map

[huderlem]

The build you uploaded to Mediafire is good, but mapping with pretmap is a much clunkier and slower experience than mapping with A-Map.

In my opinion, the following suggestions are vital to 1.0:
*Right-Click to copy a tile from the map.
*Middle-Click to fill.
*Ctrl+Right-Click+Drag to copy a group of tiles from the map.

As of right now, you need to move your mouse up to the top of the window, select eyedropper to copy, head back down to the map, copy a single tile, then head back up so you can draw on the map, and then back down to draw that tile. That's incredibly inefficient. Furthermore, ALL clicks perform the currently selected action. I don't need three buttons to do the same thing. Spread that functionality out so that mapping is more streamlined and less tedious, perferably in a way that doesn't break existing muscle memory.

There is functionality to copy a group of tiles from the tileset, but not from the map. If my house tiles, say, are not all together on the tileset so that I can copy them in one group, I have to reassemble them every time I want to put down a house with the current implementation, something A-Map avoids by allowing us to multi-select tiles from the map to copy and plop down.

Miscellaneous Suggestions:
*Shift+Left-Click+Drag to draw multiple tiles using smart-pathing logic instead of the by-grid style.
*Implement the map shifting functionality from EliteMap.
*Make some delineation between the open map and the connections/border. I am inadvertently trying to draw on them without realizing that they're not my current map because they are so seamless.
*Ability to open an event's script file with defined text editor/IDE.

(originally from yenatch/pretmap#59)

[huderlem]

ab0eff8