TicTacToe Bash script

I can't select the last square (3;3). The main problem was that. I hope someone can help me because i cannot know whats the problem.

The code is here:

#!/bin/bash
board=( " "  " "  " "
" "  " "  " "
" "  " " )
function draw_board {
echo "+---+---+---+"
echo "| ${board[0]} | ${board[1]} | ${board[2]} |"
echo "+---+---+---+"
echo "| ${board[3]} | ${board[4]} | ${board[5]} |"
echo "+---+---+---+"
echo "| ${board[6]} | ${board[7]} | ${board[8]}  |"
echo "+---+---+---+"
}
function check_win {
local symbol=$1
if [[ ${board[0]} == $symbol && ${board[1]} == $symbol && ${board[2]} == $symbol ]] ||
[[ ${board[3]} == $symbol && ${board[4]} == $symbol && ${board[5]} == $symbol ]] ||
[[ ${board[6]} == $symbol && ${board[7]} == $symbol && ${board[8]} == $symbol ]] ||
[[ ${board[0]} == $symbol && ${board[3]} == $symbol && ${board[6]} == $symbol ]] ||
[[ ${board[1]} == $symbol && ${board[4]} == $symbol && ${board[7]} == $symbol ]] ||
[[ ${board[2]} == $symbol && ${board[5]} == $symbol && ${board[8]} == $symbol ]] ||
[[ ${board[0]} == $symbol && ${board[4]} == $symbol && ${board[8]} == $symbol ]] ||
[[ ${board[2]} == $symbol && ${board[4]} == $symbol && ${board[6]} == $symbol ]]; then
echo true
else
echo false
fi
}
function is_free {
local index=$1
if [[ ${board[$index]} == " " ]]; then
echo true
else
echo false
fi
}
function game_loop {
local player="X"
local move_count=0
local win=false
while [[ $move_count -lt 10  && $win == false ]]; do
draw_board
echo "$player következik. Adja meg az x koordinátát [1-3]: "
read x
echo "Adja meg az y koordinátát [1-3]: "
read y
x=$((x-1))
y=$((y-1))
if [[ $x -lt 0 || $x -gt 2 || $y -lt 0 || $y -gt 2 ]]; then
echo "Hibás koordináta!" >&2
elif [[ $(is_free $((y*3+x))) == true ]]; then
board[$((y*3+x))]="$player"
win=$(check_win $player)
if [[ $win == true ]]; then
echo "$player győzött!"
else
((move_count++))
if [[ $player == "X" ]]; then
player="O"
else
player="X"
fi
echo "Lépéshiba!" >&2
fi
fi
done
if [[ $win == false ]]; then
draw_board
echo "Dontetlen!"
fi
}

I tried 3;3 and the program was not accept it and give me another try. Thank you for the reading! If you have any solution please share with me! Have a nice day!

Your original script was a nice piece of work for a terminal game. However...

There was some logic error in the calculation of the placement positions in the grid.

Also, I shifted the bash array by one ... in order to make the 3x3 matrix more consistent with traditional mathematical representations of coordinates.

In the below adaptation of the script, I have also updated the message strings with some sensible equivalents in English for common understanding.

I am personally not a fan of elif usage, so I exploded those code segments for more clarity (in my view). I hope you like the updated version.

The modified script:

#!/bin/bash
board=( " "
" "  " "  " "
" "  " "  " "
" "  " "  " " )
function draw_board {
echo -e	"\n\t+---+---+---+"
echo -e	"\t| ${board[1]} | ${board[2]} | ${board[3]} |"
echo -e	"\t+---+---+---+"
echo -e	"\t| ${board[4]} | ${board[5]} | ${board[6]} |"
echo -e	"\t+---+---+---+"
echo -e	"\t| ${board[7]} | ${board[8]} | ${board[9]} |"
echo -e	"\t+---+---+---+"
}
function check_win {
local symbol=${1}
if [[ ${board[1]} == ${symbol} && ${board[2]} == ${symbol} && ${board[3]} == ${symbol} ]] ||
[[ ${board[4]} == ${symbol} && ${board[5]} == ${symbol} && ${board[6]} == ${symbol} ]] ||
[[ ${board[7]} == ${symbol} && ${board[8]} == ${symbol} && ${board[9]} == ${symbol} ]] ||
[[ ${board[1]} == ${symbol} && ${board[4]} == ${symbol} && ${board[7]} == ${symbol} ]] ||
[[ ${board[2]} == ${symbol} && ${board[5]} == ${symbol} && ${board[8]} == ${symbol} ]] ||
[[ ${board[3]} == ${symbol} && ${board[6]} == ${symbol} && ${board[9]} == ${symbol} ]] ||
[[ ${board[1]} == ${symbol} && ${board[5]} == ${symbol} && ${board[9]} == ${symbol} ]] ||
[[ ${board[3]} == ${symbol} && ${board[5]} == ${symbol} && ${board[7]} == ${symbol} ]]; then
echo "true"
else
echo "false"
fi
}
function is_free {
local index=${1}
if [[ ${board[${index}]} == " " ]]; then
echo "true"
else
echo "false"
fi
}
function game_loop {
local player="X"
local move_count=0
local win=false
draw_board
while [[ ${move_count} -lt 9 ]]; do
#echo "$player következik. Adja meg az x koordinátát [1-3]: "
echo -e "\nPlayer $player:\n\tEnter your choice of x coordinate [1-3]: \c"
read x
echo -e "\tEnter your choice of y coordinate [1-3]: \c"
read y
if [[ $x -lt 1 || $x -gt 3 || $y -lt 1 || $y -gt 3 ]]; then
echo -e "\tInvalid coordinate entered!" >&2
else
if [[ $(is_free $(( (y-1) * 3 + x ))) == true ]]; then
board[$(( (y-1) * 3 + x ))]="${player}"
((move_count++))
win=$(check_win $player)
if [[ ${win} == "true" ]]; then
draw_board
echo -e "\n\t*** ${player} wins Tic-Tac-Toe ***"
break
else
if [[ ${player} == "X" ]]; then
player="O"
else
player="X"
fi
fi
else
echo -e "\t\t That space is taken.  Please choose another ..."
fi
fi
draw_board
done
if [[ ${win} == "false" ]]; then
echo -e "\n\t*** Draw ***"
fi
}
game_loop