Update · progress
Gridheart: aim and swing from the keyboard
Gridheart can now be played without a mouse. Arrow keys or IJKL aim and attack in that direction, and F attacks the way you are facing.
Why it matters. You can play on a laptop trackpad, a keyboard-only setup or alongside a controller-style habit, and switch back to the mouse mid-fight.
Limits. I checked that the hosted build loads. I haven't re-tested the new controls in every room.
Evidence. The commit