Linux/Unix Shell Scripting - Ayuda con script bash

#!/bin/bash

clear

#vora dal

tput setaf 6

tput cup 1 1

x=1

while [ $x -le 40 ];do

	printf %b "\x1b(0\x71\x1b(B"

	let x=x+1

done

#vora baix

tput setaf 6

tput cup 20 1

x=1

while [ $x -le 40 ];do

	printf %b "\x1b(0\x71\x1b(B"

	let x=x+1

done

#vora esquerra

tput setaf 6

tput cup 1 1

x=1

while [ $x -le 20 ];do

	tput cup $x 1

	printf %b "\x1b(0\x78\x1b(B"

	let x=x+1

done

#vora dreta

tput setaf 6

tput cup 1 40

x=1

while [ $x -le 20 ];do

	tput cup $x 40

	printf %b "\x1b(0\x78\x1b(B"

	let x=x+1

done

#cantonades

tput cup 1 1

printf %b "\x1b(0\x6c\x1b(B"

tput cup 1 40

printf %b "\x1b(0\x6b\x1b(B"

tput cup 20 1

printf %b "\x1b(0\x6d\x1b(B"

tput cup 20 40

printf %b "\x1b(0\x6a\x1b(B"

#situació inicial

tput setaf 4

tput cup 10 20

printf %b "*"

tput cup 1 41

echo "Score: 0"

tecla=1

function massanetes(){

while [ $tecla -ne 0 ]; do

	declare -A myglobal

m1lin=$((RANDOM%19+2))

m1col=$((RANDOM%39+2))

tput cup $m1lin $m1col

printf %b "@"

m2lin=$((RANDOM%19+2))

m2col=$((RANDOM%39+2))

tput cup $m2lin $m2col

printf %b "@"

m3lin=$((RANDOM%19+2))

m3col=$((RANDOM%39+2))

tput cup $m3lin $m3col

printf %b "@"

m4lin=$((RANDOM%19+2))

m4col=$((RANDOM%39+2))

tput cup $m4lin $m4col

printf %b "@"

m5lin=$((RANDOM%19+2))

m5col=$((RANDOM%39+2))

tput cup $m5lin $m5col

printf %b "@"

myglobal["m1lin"]=$m1lin

myglobal["m1col"]=$m1col

myglobal["m2lin"]=$m2lin

myglobal["m2col"]=$m2col

myglobal["m3lin"]=$m3lin

myglobal["m3col"]=$m3col

myglobal["m4lin"]=$m4lin

myglobal["m4col"]=$m4col

myglobal["m5lin"]=$m5lin

myglobal["m5col"]=$m5col

declare -p myglobal > /dev/shm/foo

sleep 10

tput cup $m1lin $m1col

tput setaf 5

printf " "

tput cup $m2lin $m2col

tput setaf 5

printf " "

tput cup $m3lin $m3col

tput setaf 5

printf " "

tput cup $m4lin $m4col

tput setaf 5

printf " "

tput cup $m5lin $m5col

tput setaf 5

printf " "

done

}

massanetes &

tput setaf 9

tput cup 22 0

contador=0

tecla=1

posxlin=10

posycol=20

while [ $tecla -ne 0 ];do

	read -s -n 1 tecla

	#read -p "Mou: (8-dalt, 2-baix, 4-esquerra, 6-dreta, 0-sortir)" tecla

	tput cup 22 0

	case $tecla in

		8)

		tput cup $posxlin $posycol

		printf %b " "

		let posxlin=posxlin-1

		if [ $posxlin -eq 1 ]; then

			let posxlin=posxlin+1

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

		else

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

			. /dev/shm/foo

			if [ $posxlin -eq ${myglobal["m1lin"]} ] && [ $posycol -eq ${myglobal["m1col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m2lin"]} ] && [ $posycol -eq ${myglobal["m2col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m3lin"]} ] && [ $posycol -eq ${myglobal["m3col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m4lin"]} ] && [ $posycol -eq ${myglobal["m4col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m5lin"]} ] && [ $posycol -eq ${myglobal["m5col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

		fi

		;;

		2)

		tput cup $posxlin $posycol

		printf %b " "

		let posxlin=posxlin+1

		if [ $posxlin -eq 20 ]; then

			let posxlin=posxlin-1

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

		else

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

			. /dev/shm/foo

			if [ $posxlin -eq ${myglobal["m1lin"]} ] && [ $posycol -eq ${myglobal["m1col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m2lin"]} ] && [ $posycol -eq ${myglobal["m2col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m3lin"]} ] && [ $posycol -eq ${myglobal["m3col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m4lin"]} ] && [ $posycol -eq ${myglobal["m4col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m5lin"]} ] && [ $posycol -eq ${myglobal["m5col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

		fi

		;;

		4)

		tput cup $posxlin $posycol

		printf %b " "

		let posycol=posycol-1

		if [ $posycol -eq 1 ]; then

			let posycol=posycol+1

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

		else

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

			. /dev/shm/foo

			if [ $posxlin -eq ${myglobal["m1lin"]} ] && [ $posycol -eq ${myglobal["m1col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m2lin"]} ] && [ $posycol -eq ${myglobal["m2col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m3lin"]} ] && [ $posycol -eq ${myglobal["m3col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m4lin"]} ] && [ $posycol -eq ${myglobal["m4col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m5lin"]} ] && [ $posycol -eq ${myglobal["m5col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

		fi

		;;

		6)

		tput cup $posxlin $posycol

		printf %b " "

		let posycol=posycol+1

		if [ $posycol -eq 39 ]; then

			let posycol=posycol-1

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

		else

			tput cup $posxlin $posycol

			tput setf 3

			printf %b "*"

			. /dev/shm/foo

			if [ $posxlin -eq ${myglobal["m1lin"]} ] && [ $posycol -eq ${myglobal["m1col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m2lin"]} ] && [ $posycol -eq ${myglobal["m2col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m3lin"]} ] && [ $posycol -eq ${myglobal["m3col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m4lin"]} ] && [ $posycol -eq ${myglobal["m4col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

		fi

			if [ $posxlin -eq ${myglobal["m5lin"]} ] && [ $posycol -eq ${myglobal["m5col"]} ]; then

			let contador=contador+1

			tput cup 1 41

			echo "Score: $contador"

			fi

		fi

		;;

		0) killall -e joc2.sh

		;;

		*) echo "Aquest moviment no està permés"

		;;

	esac

	tput cup 22 0

 done