#!/bin/sh

DIRECTION=$1

getMouseX() {
	xdotool getmouselocation 2>/dev/null | awk '{ print $1 }' | cut -d: -f2
}

getMouseY() {
	xdotool getmouselocation 2>/dev/null | awk '{ print $2 }' | cut -d: -f2
}

moveTo() {
	xdotool mousemove $1 $2
}

case $DIRECTION in
	left)  moveTo $(echo "$(getMouseX)-20" | bc) $(getMouseY);;
	right) moveTo $(echo "$(getMouseX)+20" | bc) $(getMouseY);;
	up)    moveTo $(getMouseX) $(echo "$(getMouseY)-20" | bc) ;;
	down)  moveTo $(getMouseX) $(echo "$(getMouseY)+20" | bc);;
esac