#!/bin/bash
#This script REQUIRES xdotool. Naturally, it only works on Linux/Unix.
#NO WARRANTY IS GIVEN WHATSOEVER. DESPITE SUCCESSFUL SAFETY TESTS, USE AT YOUR OWN RISK.

#Customize by setting the next line
MAX_DIFF=20

echo "Position the mouse (do not click) and press ENTER..."
echo "When you're done, move the mouse away from the starting point"
read

X=$(xdotool getmouselocation | cut -d " " -f 1 | cut -d ":" -f 2)
Y=$(xdotool getmouselocation | cut -d " " -f 2 | cut -d ":" -f 2)
MIN_X=$(expr $X - $MAX_DIFF)
MAX_X=$(expr $X + $MAX_DIFF)
MIN_Y=$(expr $Y - $MAX_DIFF)
MAX_Y=$(expr $Y + $MAX_DIFF)
echo "$MIN_X,$MIN_Y $MAX_X,$MAX_Y"

xdotool click 1

while
expr $X '>=' $MIN_X '&' $X '<=' $MAX_X '&' $Y '>=' $MIN_Y '&' $Y '<=' $MAX_Y
do

xdotool type "qwertyuiopasdfghjklzxcvbnm1234567890 "
X=$(xdotool getmouselocation | cut -d " " -f 1 | cut -d ":" -f 2)
Y=$(xdotool getmouselocation | cut -d " " -f 2 | cut -d ":" -f 2)

done

echo "The mouse moved out of bounds. STOPPED."