A memory testing game in the terminal

The following script is a memory testing game that can be played on the terminal.

#!/bin/bash help(){ echo "The game is a simple memory tester" echo "To run it give the file execute permission using chmod" echo "Once running it will prompt you to select a level " echo "Once selected, it will display a matrix of characters on the screen" echo "Easy displays 2 x 2 matrix of characters" echo "Medium displays 3 x 3 matrix of characters" echo "Hard displays 4 x 4 matrix of characters" echo "You have 5 seconds to memorize the characters" echo "Then you will be prompted to enter the characters,in random order" echo "In which ever cell of the matrix you see "X", enter the charater that was there in the matrix shown to you" echo "For each character you have 3 chances, after which the game get over" echo "Note that you do NOT have to hit return key after entering the character" } grid() { matrix=$(($1 * 2)) tput clear for((i=1;i<$matrix;i=i+2)) do for((j=0;j<$matrix;j++)) do tput cup $j $i echo "|" done done for((i=1;i<$matrix;i=i+2)) do for((j=0;j<$matrix;j=j+2)) do tput cup $i $j echo "_" done done } sym_arr=( ! @ $ % 1 2 3 4 5 6 7 8 9 + - o I ) disp=(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ) flags=(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ) count=1 fill() { matrix=$(($1 * $1 )) while [ $count -le $matrix ] do pos=$((RANDOM%$matrix + 1)) if [ ${flags[$pos]} -ne 1 ] then disp_arr[$count]=${sym_arr[$pos]} ((count++)) flags[$pos]=1 fi done } show(){ count=1 matrix=$(($1 * 2)) tput clear grid $1 for((i=0;i<$matrix;i=i+2)) do for((j=0;j<$matrix;j=j+2)) do tput cup $i $j rows[$count]=$i cols[$count]=$j echo "${disp_arr[$count]}" index=$(($i*3+$j)) str_arr[$index]=${disp_arr[$count]} ((count++)) done done sleep 5 } right_ans(){ count=1 matrix=$(($1 * 2)) tput clear grid $1 for((i=0;i<$matrix;i=i+2)) do for((j=0;j<$matrix;j=j+2)) do tput cup $i $j index=$(($i*3+$j)) echo "${str_arr[$index]}" done done } ask() { tput clear echo "Note that you do NOT have to hit return key after entering the character" sleep 2 tput clear grid $1 disp_flags=(0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 ) matrix=$(($1 * $1)) count=1 read_pos=$(($1+4)) msg=$((read_pos+2)) while [ $count -le $matrix ] do pos=$((RANDOM%$matrix + 1)) if [ ${disp_flags[$pos]} -eq 0 ] then tput cup ${rows[$pos]} ${cols[$pos]} echo "X" index=$((${rows[$pos]} * 3 + ${cols[$pos]})) tries=0 while [ $tries -lt 3 ] do tput cup 0 $read_pos echo " " tput cup 0 $read_pos read -n 1 temp sleep 1 tput cup 0 $msg echo " " if [ "$temp" == "${str_arr[$index]}" ] then break else tput cup 0 $msg echo "wrong try again" ((tries++)) fi done if [ $temp != ${str_arr[$index]} ] then tput cup 0 $msg echo "Game over " sleep 1 echo "Actual matrix was" sleep 1 tput clear right_ans $1 exit else tput cup ${rows[$pos]} ${cols[$pos]} echo "${str_arr[$index]}" fi disp_flags[$pos]=1 ((count++)) fi done } echo "Press the number for your choice" select choice in easy medium hard help quit; do case $choice in easy) level=2 ;break;; medium) level=3;break ;; hard) level=4 ;break;; help) help ;; quit) exit ;; esac done fill $level show $level ask $level sleep 2 tput clear echo "Well done :-)"

Save the script as memory_test.sh
Give it execute permissions

chmod 777 memory_test.sh

execute it

./memory test.sh

It will display a menu, prompting you to select either the level or help for the game.

Press the number for your choice 1) easy 2) medium 3) hard 4) help 5) quit #?

Enter the number of your choice to make the selection.
If you enter 2, medium level will be selected. It will display a matrix of 3 X 3 characters as shown below.



Easy level displays a matrix of 2 x 2
Hard level displays a matrix of 4 x 4

The matrix will be visible for 5 seconds with in which try to remember all the characters and their locations.
After 5 seconds the screen will be cleared.
Then you will be prompted to enter any of the characters randomly by displaying "X" at the corresponding cell



3 wrong answers per character are allowed after which the game gets over and the actual matrix will be displayed again.