It'd be great if we could use the rectangle tool to erase large areas of tiles in the tilemap.
2017...
Is there a way to do that now?
If you have at least like 6 tiles.
You can drag in the tilemap window to select more tiles at once.
Now select the erase tool and you have a bigger brush to erase. (left button)
&yeah i wish the rectangle could do that on right click.
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Actually there's a hack to do this. Make a separate tile map (huge) and put it in on the same layout. Select all of the tiles on that tile map and hit 4 to go to the eraser. Then hit 1 to go to the selector and click the tilemap you want to erase. Hit 4 again and it should keep the same sized block you selected from the previous tilemap regardless of the main tile maps size.
I agree it's completely ridiculous.