Mouse Finder

term.clear()
term.setCursorPos(1,1)
print("Position:")

function getPos()
  while true do
    event, button, x, y = os.pullEvent("mouse_click")
    term.clear()
    paintutils.drawLine(x, y, x, y, colors.green)
    term.setCursorPos(1,1)
    term.setBackgroundColor(colors.black)
    print("Position: "..x..", "..y)
    term.setCursorPos(1,18)
    print("Press Enter to exit...")
  end
end

function exit()
  while true do
    event, key = os.pullEvent("key")
    if key == 28 then
      term.clear()
      term.setCursorPos(1,1)
      error()
    end
  end
end

parallel.waitForAny(getPos, exit)