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| #!/bin/bash
Generation=0
num_lines=0
num_columns=0
CELL=0
declare -A tab
declare -A tabfutur #Tempory array that will receive the future stat of each cell.
####################### HEADER #########################
# This function displays the header.
header_function()
{
echo ""
echo " ═══════════════════ Conway's Game of Life ═══════════════════ "
echo ""
}
#################### ARRAY FUNCTION #####################
# This function initalizes the array and fill it with randomly 0 and 1 or with nothing.
init_array_function()
{
for ((x=1;x<=num_lines;x++))
do
for ((y=1;y<=num_columns;y++))
do
if [ $cell == 'a' ]
then
tab[$x,$y]=$((RANDOM %2))
else
tab[$x,$y]=
fi
done
done
}
#################### DISPLAY FUNCTION ####################
# This function displays the array.
display_function()
{
#header_function
clear
echo ""
f1="%$((${#num_lines}+1))s"
f2="%3s"
printf "$f1"
for ((x=1;x<=num_columns;x++)) # -1
do
#printf "$f2" "$x" #Comment this line to delete the display of the abscissa.
toto=1 #This line is only here to avoid errors in the for loop when the abscissa is disabled.
done
echo
for ((y=1;y<=num_lines;y++))
do
#printf "$f1" $y #Comment this line to delete the display of the ordinate.
for ((x=1;x<=num_columns;x++))
do
printf "$f2" "${tab[$x,$y]}"
done
echo
done
echo ""
echo " > Génération : $generation "
((generation++))
}
#################### ASK COORDINATES ####################
# This function asks the user to enter the coordinates of the cell ad type 's' to run the game.
coord_function()
{
echo ""
echo ""
while [ "$coord" != "s" ]
do
echo -n " + Place your cell using the array coordinates ( like '1,1' ) or press 's' to start : "
read coord
if [[ "$coord" =~ ^[0-9]+,[0-9]+$ ]] ; then x=${coord%, *} ; y=${coord#*, } ; #2 crochets
tab[$coord]="${CELL}"
display_function
echo ""
fi
done
start_function
}
################################ ARRAY ANALIZE ################################
# This function analyze the array and calculates the different neighbours.
array_analyze_function()
{
tput civis
for ((x=1;x<=num_columns;x++))
do
for ((y=1;y<=num_lines;y++))
do
if [ $x -eq 1 ]
then
xg=$num_columns
# echo "$xg"
else
xg=$(($x-1))
# echo "$xg"
fi
if [ $x -eq $num_columns ]
then
xd=1
# echo "$xd"
else
xd=$(($x+1))
# echo "$xd"
fi
if [ $y -eq 1 ]
then
yh=$num_lines
# echo "$yh"
else
yh=$(($y-1))
# echo "$yh"
fi
if [ $y -eq $num_lines ]
then
yb=1
# echo "$yb"
else
yb=$(($y+1))
# echo "$yb"
fi
Counter=0
# Neighbour (xg,yb)
[[ "${tab[$((xg)),$((yb))]}" == $CELL ]] && ((Counter++)) #(x-1),(y-1)
# Neighbour (x, yb)
[[ "${tab[$((x)),$((yb))]}" == $CELL ]] && ((Counter++)) #(x),(y-1)
# Neighbour (xd,yb)
[[ "${tab[$((xd)),$((yb))]}" == $CELL ]] && ((Counter++)) # (x+1), (y-1)
# Neighbour (xg,y)
[[ "${tab[$((xg)),$((y))]}" == $CELL ]] && ((Counter++)) # (x-1), (y)
# Neighbour (xd,y)
[[ "${tab[$((xd)),$((y))]}" == $CELL ]] && ((Counter++)) # (x+1), (y)
# Neighbour (xg,yb)
[[ "${tab[$((xg)),$((yh))]}" == $CELL ]] && ((Counter++)) # (x-1), (y+1)
# Neighbour (x,yh)
[[ "${tab[$((x)),$((yh))]}" == $CELL ]] && ((Counter++)) # (x), (y+1)
# Neighbour (xd,yh)
[[ "${tab[$((xd)),$((yh))]}" == $CELL ]] && ((Counter++)) # (x+1), (y+1)
# If the cell is alive and with two neighbours, she survives.
[ ${Counter} -eq 2 ] && tabfutur[${x},${y}]=${tab[$x,$y]}
# If the cell has 3 neighbours, either it survives or a cell is born.
[ ${Counter} -eq 3 ] && tabfutur[${x},${y}]=$CELL
# If th cell is alive with maximum one neighbourd, she dies.
if [ $cell == 'a' ]
then
[ ${Counter} -le 1 ] && tabfutur[${x},${y}]=" "
else
[ ${Counter} -le 1 ] && tabfutur[${x},${y}]=""
fi
# If a cell has between four and eight neighbours, she dies.
if [ $cell == 'a' ]
then
[ ${Counter} -ge 4 ] && [ ${Counter} -le 8 ] && tabfutur[${x},${y}]=" "
else
[ ${Counter} -ge 4 ] && [ ${Counter} -le 8 ] && tabfutur[${x},${y}]=""
fi
######################### TEST BORDER #########################
################################################################
done
done
for ((x=1;x<=num_lines;x++))
do
for ((y=1;y<=num_columns;y++))
do
tab[$x,$y]=${tabfutur[$x,$y]}
done
done
}
#################### HOMEPAGE ####################
# This function asks the user to enter the numbers of lines, of columns, the form of the cell or type 'a' to fill in the array randomly.
homepage_function()
{
header_function
echo " How many lines ? "
echo -n " > "
read Lines
until [[ $Lines =~ ^[0-9]+$ ]]
do
echo -e "\033[91m > Error ! Retry ! <\033[0m "
echo ""
echo " How many lines ? "
echo -n " > "
read -r Lines
done
echo ""
echo " How many columns ? "
echo -n " > "
read Columns
until [[ $Columns =~ ^[0-9]+$ ]]
do
echo -e "\033[91m > Error ! Retry ! <\033[0m "
echo ""
echo " How many Columns ? "
echo -n " > "
read -r Columns
done
echo ""
echo " Put the cell's form or press 'a' to fill randomly the array "
echo -n " > "
read -r cell
while [ -z "$cell" ]
do
echo -e "\033[91m > Error ! Retry ! <\033[0m "
echo ""
echo " Cell's form ? "
echo -n " > "
read -r cell
done
Generation=0
num_lines=$Lines
num_columns=$Columns
CELL=$CELL
}
#################### RUN & START FUNCTION ####################
# This function starts the analysis of the array.
start_function()
{
while true
do
display_function
array_analyze_function
done
}
# This function is the basic function. It allows you to launch all the other functions.
run()
{
homepage_function
init_array_function
display_function
coord_function
}
################################ MAIN ################################
clear
echo ""
echo "╔═══════════════════════ Conway's Game of Life ═══════════════════════╗"
echo "║ ║"
echo "║ This is the Bash script version of John Conway's Game of Life. ║"
echo "║ Life is a simple implementation of cellular automata. ║"
echo "║ ║"
echo "╠═══════════════════════════════════════════════════════════════════════╣"
echo "║ ║"
echo "║ Rules : ║"
echo "║ ║"
echo "║ [1] A living cell with either 2 or 3 living neighbors remains alive. ║"
echo "║ ║"
echo "║ [2] A dead cell with 3 living neighbors comes alive. ║"
echo "║ ║"
echo "║ [2] All other cases result in a dead cell for the next generation. ║"
echo "║ ║"
echo "╚═══════════════════════════════════════════════════════════════════════╝"
echo ""
echo ""
read -p "> Press any key to continue ... "
clear
run |
