diff --git a/.dir-locals.el b/.dir-locals.el
index 72ae150..d3038f3 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -3,8 +3,12 @@
 
 ((lua-mode
   (fill-column . 80)
-  (tab-width . 3)
+  (tab-width . 4)
   (indent-tabs-mode . t)))
 
+((sh-mode
+	(fill-column . 80)
+	(tab-width . 4)
+	(indent-tabs-mode . t)))
 
 
diff --git a/backup.sh b/backup.sh
index f402585..19c095f 100755
--- a/backup.sh
+++ b/backup.sh
@@ -10,12 +10,12 @@ bak=$serverpath/backup
 world=$serverpath/minetest/worlds/$worldname
 
 if [[ ! -d $bak ]]; then
-    mkdir -p $bak
+	mkdir -p $bak
 fi
 
 bak_tmp=/var/tmp/$servername
 if [[ ! -d $bak_tmp ]]; then
-    mkdir $bak_tmp
+	mkdir $bak_tmp
 fi
 
 cp $serverpath/minetest/minetest.conf $bak/
@@ -39,9 +39,9 @@ log_dir=$serverpath/logs
 [[ ! -d $log_dir ]] && mkdir $log_dir
 pushd $log_dir
 if [[ -f moredebug.log ]]; then
-    d=$(date +%Y-%m-%d.%H.%M.%S)
-    mv moredebug.log moredebug_$d.log
-    bzip2 moredebug_$d.log
-    tar --label=LOGS-$servername -rf moredebug-logs.tar --remove-files moredebug*.log.bz2
+	d=$(date +%Y-%m-%d.%H.%M.%S)
+	mv moredebug.log moredebug_$d.log
+	bzip2 moredebug_$d.log
+	tar --label=LOGS-$servername -rf moredebug-logs.tar --remove-files moredebug*.log.bz2
 fi
 popd
diff --git a/genmap.sh b/genmap.sh
index 4546bb9..35d49b1 100755
--- a/genmap.sh
+++ b/genmap.sh
@@ -5,75 +5,75 @@
 # Script pour automatiser la création de la carte de nalc
 
 strip() {
-    echo "$1" | cut -d \' -f 2
+	echo "$1" | cut -d \' -f 2
 }
 
 verif() {
-    if [ $? -gt 0 ]; then
-	echo "Erreur ! Arrêt du script."
-	exit 1
-    fi
+	if [ $? -gt 0 ]; then
+		echo "Erreur ! Arrêt du script."
+		exit 1
+	fi
 }
 
 error() {
-    if [ -n "$1" ]; then
-	echo "ERREUR : $1 !"
-    else
-	echo "ERREUR : paramètres invalides !" >&2
-	echo "utilisez l'option -h pour en savoir plus" >&2
-    fi
-    exit 1
+	if [ -n "$1" ]; then
+		echo "ERREUR : $1 !"
+	else
+		echo "ERREUR : paramètres invalides !" >&2
+		echo "utilisez l'option -h pour en savoir plus" >&2
+	fi
+	exit 1
 }
 
 usage() {
-    echo "Usage : ./genmap.sh [-h|--help] server_path worldname destination_path"
-    echo "Génère la carte de nalc vers le fichier destination_path/nalc_map.png"
+	echo "Usage : ./genmap.sh [-h|--help] server_path worldname destination_path"
+	echo "Génère la carte de nalc vers le fichier destination_path/nalc_map.png"
 }
 
 action() {
-    [ -z "$1" ] && error "Argument manquant"
-    local serverpath=$(strip "$1")
-    [ ! -d "$serverpath" ] && error "Le répertoire $serverpath n'existe pas"
+	[ -z "$1" ] && error "Argument manquant"
+	local serverpath=$(strip "$1")
+	[ ! -d "$serverpath" ] && error "Le répertoire $serverpath n'existe pas"
 
-    [ -z "$2" ] && error "Nom du world manquant"
-    local world_name=$(strip "$2")
-    
-    local world="$serverpath/minetest/worlds/$world_name"
-    [ ! -d "$world" ] && error "Le répertoire $world n'existe pas"
+	[ -z "$2" ] && error "Nom du world manquant"
+	local world_name=$(strip "$2")
 
-    [ -z "$3" ] && error "Chemin de destination manquant"
-    local destination=$(strip "$3")
-    [ ! -d "$destination" ] && error "Le répertoire $destination n'existe pas"
-    
-    [ ! -d "$serverpath/minetestmapper" ] && error "minetestmapper ne semble pas installé"
-    [ ! -d "$serverpath/leaftest" ] && error "leaftest ne semble pas installé"
-    [ ! -e "$serverpath/colors.txt" ] && error "$serverpath/colors.txt manquant"
+	local world="$serverpath/minetest/worlds/$world_name"
+	[ ! -d "$world" ] && error "Le répertoire $world n'existe pas"
 
-    # Copie du dossier leaftest vers /tmp puis on l'exécute de là
-    local config="$serverpath/minetest/minetest.conf"
-    local workdir=$(mktemp -d "/tmp/minetest-mapper.XXXXXXXXX")
-    local spawn=$(grep "^static_spawnpoint" "$config" | tr -d " " | cut -f 2 -d "=");
-    local spawnx=$(cut -f 1 -d "," <<<$spawn)
-    local spawnz=$(cut -f 3 -d "," <<<$spawn)
-    local mapsize=12288
-    
-    cp -a "$serverpath/leaftest" $workdir
-    cp "$serverpath/colors.txt" $workdir/leaftest
-    
-    pushd $workdir/leaftest
-    
-    MAPPERDIR="$serverpath/minetestmapper" \
-    MAPPERPARAMS="--colors $serverpath/colors.txt \
-    --min-y -25 --max-y 300" \
-    JOBNUM=$(nproc) \
-    $workdir/leaftest/mapper.sh "$world" $spawnx,$spawnz $mapsize
+	[ -z "$3" ] && error "Chemin de destination manquant"
+	local destination=$(strip "$3")
+	[ ! -d "$destination" ] && error "Le répertoire $destination n'existe pas"
 
-    # Copie de leaftest vers le dossier web distant normalement déjà monté
-    rm -rf "$destination/$world_name"
-    cp -rL $workdir/leaftest/www "$destination/$world_name"
-    popd
-    
-    rm -rf $workdir
+	[ ! -d "$serverpath/minetestmapper" ] && error "minetestmapper ne semble pas installé"
+	[ ! -d "$serverpath/leaftest" ] && error "leaftest ne semble pas installé"
+	[ ! -e "$serverpath/colors.txt" ] && error "$serverpath/colors.txt manquant"
+
+	# Copie du dossier leaftest vers /tmp puis on l'exécute de là
+	local config="$serverpath/minetest/minetest.conf"
+	local workdir=$(mktemp -d "/tmp/minetest-mapper.XXXXXXXXX")
+	local spawn=$(grep "^static_spawnpoint" "$config" | tr -d " " | cut -f 2 -d "=");
+	local spawnx=$(cut -f 1 -d "," <<<$spawn)
+	local spawnz=$(cut -f 3 -d "," <<<$spawn)
+	local mapsize=12288
+
+	cp -a "$serverpath/leaftest" $workdir
+	cp "$serverpath/colors.txt" $workdir/leaftest
+
+	pushd $workdir/leaftest
+
+	MAPPERDIR="$serverpath/minetestmapper" \
+			 MAPPERPARAMS="--colors $serverpath/colors.txt \
+			  --min-y -25 --max-y 300" \
+			 JOBNUM=$(nproc) \
+			 $workdir/leaftest/mapper.sh "$world" $spawnx,$spawnz $mapsize
+
+	# Copie de leaftest vers le dossier web distant normalement déjà monté
+	rm -rf "$destination/$world_name"
+	cp -rL $workdir/leaftest/www "$destination/$world_name"
+	popd
+
+	rm -rf $workdir
 }
 
 # Pas de paramètre
@@ -87,17 +87,17 @@ options=$(getopt -o h -l help -- "$@")
 set -- $options
 
 while true; do
-    case "$1" in
-	-h|--help)
-	    usage
-	    exit 0;;
-	--)
-	    shift;;
-	*)
-	    action $1 $2 $3
-	    exit 0
-	    shift;;
-    esac
+	case "$1" in
+		-h|--help)
+			usage
+			exit 0;;
+		--)
+			shift;;
+		*)
+			action $1 $2 $3
+			exit 0
+			shift;;
+	esac
 done
 
 exit 0
diff --git a/install.sh b/install.sh
index cd425a8..e869982 100755
--- a/install.sh
+++ b/install.sh
@@ -3,436 +3,436 @@
 # License: GPLv3
 
 usage() {
-    echo "Usage: ./install_nalc.sh [options] [--] [destination]"
-    echo
-    echo "Description:"
-    echo -e "\tDownload and install the files needed by the NALC server to the"
-    echo -e "\toptional [destination] folder. Otherwise the current directory"
-    echo -e "\twill be used."
-    echo
-    echo -e "\tBut, be carefull!"
-    echo -e "\tBy default the ~/.minetest dir will also be used and modified."
-    echo -e "\tSo, make a backup of your ~/.minetest directory before the"
-    echo -e "\tinstallation of this server or specify a new directory with the"
-    echo -e "\t --minetest-dir or -d option."
-    echo
-    echo "Requirements:"
-    echo -e "\t- Official Minetest server must be already installed on your system."
-    echo -e "\tIf it is not the case, please refers to the https://minetest.net"
-    echo -e "\twebsite for the installation instructions."
-    echo -e "\t- You'll also need git, cmake, make."
-    echo
-    echo "Options:"
-    echo -e "\t-h --help\t  This help."
-    echo -e "\t-b --minetest-bin <path> Minetest server executable path."
-    echo -e "\t-d --minetest-dir <dir>  Minetest directory to use for installing nalc mods, nalc game, minetest.conf…"
-    echo -e "\t-m --map-backend <sqlite3|leveldb|redis|postgresql|dummy>"
-    echo -e "\t-p --player-backend <sqlite3|leveldb|postgresql|dummy|files>"
-    echo -e "\t-a --auth-backend <sqlite3|leveldb|postgresql|files>"
-    echo -e "\t-s --mod-storage-backend <sqlite3|files|dummy>"
-    echo -e "\t-M --minetest-mapper Install with minetest mapper support."
-    echo -e "\t-w --world <name> Custom world name."
-    echo -e "\t-P --port <port> Custom server port number."
-    echo -e "\t--url <URL> Custom remote URL."
-    echo -e "\t--branch <stable|dev> Choose the version to install (stable by default)"
-    echo
-    echo "License: GPLv3. Please read the LICENSE file."
-    echo "Author: Sys4 - https://sys4.fr#contact"
+	echo "Usage: ./install_nalc.sh [options] [--] [destination]"
+	echo
+	echo "Description:"
+	echo -e "\tDownload and install the files needed by the NALC server to the"
+	echo -e "\toptional [destination] folder. Otherwise the current directory"
+	echo -e "\twill be used."
+	echo
+	echo -e "\tBut, be carefull!"
+	echo -e "\tBy default the ~/.minetest dir will also be used and modified."
+	echo -e "\tSo, make a backup of your ~/.minetest directory before the"
+	echo -e "\tinstallation of this server or specify a new directory with the"
+	echo -e "\t --minetest-dir or -d option."
+	echo
+	echo "Requirements:"
+	echo -e "\t- Official Minetest server must be already installed on your system."
+	echo -e "\tIf it is not the case, please refers to the https://minetest.net"
+	echo -e "\twebsite for the installation instructions."
+	echo -e "\t- You'll also need git, cmake, make."
+	echo
+	echo "Options:"
+	echo -e "\t-h --help\t  This help."
+	echo -e "\t-b --minetest-bin <path> Minetest server executable path."
+	echo -e "\t-d --minetest-dir <dir>  Minetest directory to use for installing nalc mods, nalc game, minetest.conf…"
+	echo -e "\t-m --map-backend <sqlite3|leveldb|redis|postgresql|dummy>"
+	echo -e "\t-p --player-backend <sqlite3|leveldb|postgresql|dummy|files>"
+	echo -e "\t-a --auth-backend <sqlite3|leveldb|postgresql|files>"
+	echo -e "\t-s --mod-storage-backend <sqlite3|files|dummy>"
+	echo -e "\t-M --minetest-mapper Install with minetest mapper support."
+	echo -e "\t-w --world <name> Custom world name."
+	echo -e "\t-P --port <port> Custom server port number."
+	echo -e "\t--url <URL> Custom remote URL."
+	echo -e "\t--branch <stable|dev> Choose the version to install (stable by default)"
+	echo
+	echo "License: GPLv3. Please read the LICENSE file."
+	echo "Author: Sys4 - https://sys4.fr#contact"
 
-    exit 0
+	exit 0
 }
 
 strip() {
-    echo $1 | cut -d \' -f 2
+	echo $1 | cut -d \' -f 2
 }
 
 verif() {
-    if [[ $? -gt 0 ]]; then
-	echo "Error! Exit."
-	exit 1
+	if [[ $? -gt 0 ]]; then
+		echo "Error! Exit."
+		exit 1
     fi
 }
 
 error() {
-    if [[ -n $1 ]]; then
-	echo "ERROR: $1"! >&2
-    else
-	echo "ERROR: Invalid option!" >&2
-	echo "Use -h option for help." >&2
-    fi
-    exit 1
+	if [[ -n $1 ]]; then
+		echo "ERROR: $1"! >&2
+	else
+		echo "ERROR: Invalid option!" >&2
+		echo "Use -h option for help." >&2
+	fi
+	exit 1
 }
 
 save_conf() {
-    local conf="$1"
-    echo "MINETEST_BIN=$MINETEST_BIN" > "$conf"    
-    echo "MINETEST_DIR=$MINETEST_DIR" >> "$conf"
-    echo "MAP_BACKEND=$MAP_BACKEND" >> "$conf"
-    echo "PLAYER_BACKEND=$PLAYER_BACKEND" >> "$conf"
-    echo "AUTH_BACKEND=$AUTH_BACKEND" >> "$conf"
-    echo "MOD_STORAGE_BACKEND=$MOD_STORAGE_BACKEND" >> "$conf"
-    echo "MINETEST_MAPPER=$MINETEST_MAPPER" >> "$conf"
-    echo "URL=$URL" >> "$conf"
-    echo "BRANCH=$BRANCH" >> "$conf"
-    echo "WORLD_NAME=$WORLD_NAME" >> "$conf"
-    echo "PORT=$PORT" >> "$conf"
+	local conf="$1"
+	echo "MINETEST_BIN=$MINETEST_BIN" > "$conf"
+	echo "MINETEST_DIR=$MINETEST_DIR" >> "$conf"
+	echo "MAP_BACKEND=$MAP_BACKEND" >> "$conf"
+	echo "PLAYER_BACKEND=$PLAYER_BACKEND" >> "$conf"
+	echo "AUTH_BACKEND=$AUTH_BACKEND" >> "$conf"
+	echo "MOD_STORAGE_BACKEND=$MOD_STORAGE_BACKEND" >> "$conf"
+	echo "MINETEST_MAPPER=$MINETEST_MAPPER" >> "$conf"
+	echo "URL=$URL" >> "$conf"
+	echo "BRANCH=$BRANCH" >> "$conf"
+	echo "WORLD_NAME=$WORLD_NAME" >> "$conf"
+	echo "PORT=$PORT" >> "$conf"
 }
 
 load_conf() {
-    . "$1"
+	. "$1"
 }
 
 install_game() {
-    local game_dir="$MINETEST_DIR/games/nalc_game"
-    if [ -d "$game_dir" ]; then
-	echo "Previous installation of NALC game detected."
-	read -p "Upgrade? ([Y]es/[n]o/clean/[c]ancel) " continue
-	case "$continue" in
-	    [yY][eE][sS]|[yY]|"")
-		echo "Upgrading…"
-		pushd "$game_dir"
-		git pull
-		verif
-		popd;;
-	    [cC][lL][eE][aA][nN])
-		echo "Cleaning…"
-		rm -rf "$game_dir"
-		verif;;
-	    [cC][aA][nN][cC][eE][lL]|[cC])
-		echo "Upgrade cancelled."
-		exit 0;;
-	esac
-    fi
-    if [ ! -d "$game_dir" ]; then
-	local git_branch
-	local depth
-	case $BRANCH in
-	    "stable")
-		git_branch="-b master"
-		depth="--depth 1"
-		;;
-	    "dev")
-		git_branch="-b dev"
-		;;
-	esac
-	[ -z "$git_branch" ] && error "Invalid branch"
+	local game_dir="$MINETEST_DIR/games/nalc_game"
+	if [ -d "$game_dir" ]; then
+		echo "Previous installation of NALC game detected."
+		read -p "Upgrade? ([Y]es/[n]o/clean/[c]ancel) " continue
+		case "$continue" in
+			[yY][eE][sS]|[yY]|"")
+				echo "Upgrading…"
+				pushd "$game_dir"
+				git pull
+				verif
+				popd;;
+			[cC][lL][eE][aA][nN])
+				echo "Cleaning…"
+				rm -rf "$game_dir"
+				verif;;
+			[cC][aA][nN][cC][eE][lL]|[cC])
+				echo "Upgrade cancelled."
+				exit 0;;
+		esac
+	fi
+	if [ ! -d "$game_dir" ]; then
+		local git_branch
+		local depth
+		case $BRANCH in
+			"stable")
+				git_branch="-b master"
+				depth="--depth 1"
+				;;
+			"dev")
+				git_branch="-b dev"
+				;;
+		esac
+		[ -z "$git_branch" ] && error "Invalid branch"
 
-	echo "Cloning $URL""nalc/nalc_game.git to $game_dir…"
-	mkdir -p "$MINETEST_DIR/games"
-	verif
-	git clone $depth $git_branch $URL"nalc/nalc_game.git" "$game_dir"
-	verif
-    fi
-    echo "NALC game installed/upgraded."
+		echo "Cloning $URL""nalc/nalc_game.git to $game_dir…"
+		mkdir -p "$MINETEST_DIR/games"
+		verif
+		git clone $depth $git_branch $URL"nalc/nalc_game.git" "$game_dir"
+		verif
+	fi
+	echo "NALC game installed/upgraded."
 }
 
 install_mods() {
-    local mods_dir="$MINETEST_DIR/mods"
-    if [ -d "$mods_dir" ]; then
-	echo "Mods directory is not empty."
-	read -p "Upgrade? ([Y]es/[n]o/clean/[c]ancel) " continue
-	case "$continue" in
-	    [yY][eE][sS]|[yY]|"")
-		echo "Upgrading…"
-		"$SCRIPT_DIR"/upgrade.sh -m -s "$DESTINATION"
-		verif
-		;;
-	    [cC][lL][eE][aA][nN])
-		echo "Cleaning…"
-		rm -rf "$mods_dir"
-		verif
-		;;
-	    [cC][aA][nN][cC][eE][lL]|[cC])
-		echo "Upgrade cancelled."
-		exit 0;;
-	esac
-    fi
-    if [ ! -d "$mods_dir" ]; then
-	local git_branch
-	local depth
-	case $BRANCH in
-	    "stable")
-		git_branch="-b master"
-		depth="--depth 1"
-		;;
-	    "dev")
-		git_branch="-b dev"
-		;;
-	esac
-	[ -z $git_branch ] && error "Invalid branch"
+	local mods_dir="$MINETEST_DIR/mods"
+	if [ -d "$mods_dir" ]; then
+		echo "Mods directory is not empty."
+		read -p "Upgrade? ([Y]es/[n]o/clean/[c]ancel) " continue
+		case "$continue" in
+			[yY][eE][sS]|[yY]|"")
+				echo "Upgrading…"
+				"$SCRIPT_DIR"/upgrade.sh -m -s "$DESTINATION"
+				verif
+				;;
+			[cC][lL][eE][aA][nN])
+				echo "Cleaning…"
+				rm -rf "$mods_dir"
+				verif
+				;;
+			[cC][aA][nN][cC][eE][lL]|[cC])
+				echo "Upgrade cancelled."
+				exit 0;;
+		esac
+	fi
+	if [ ! -d "$mods_dir" ]; then
+		local git_branch
+		local depth
+		case $BRANCH in
+			"stable")
+				git_branch="-b master"
+				depth="--depth 1"
+				;;
+			"dev")
+				git_branch="-b dev"
+				;;
+		esac
+		[ -z $git_branch ] && error "Invalid branch"
 
-	echo "Cloning $URL/nalc-server-mods.git to $mods_dir…"
-	git clone $depth $git_branch $URL"nalc/nalc-server-mods.git" "$mods_dir"
-	verif
-	pushd "$mods_dir"
-	git submodule update --init --recursive
-	verif
-	popd
-    fi
-    echo "Mods for NALC installed/upgraded."
+		echo "Cloning $URL/nalc-server-mods.git to $mods_dir…"
+		git clone $depth $git_branch $URL"nalc/nalc-server-mods.git" "$mods_dir"
+		verif
+		pushd "$mods_dir"
+		git submodule update --init --recursive
+		verif
+		popd
+	fi
+	echo "Mods for NALC installed/upgraded."
 }
 
 install_world() {
-    local world_dir="$MINETEST_DIR/worlds/$WORLD_NAME"
-    if [ -d "$world_dir" ]; then
-	echo "World $WORLD_NAME already exist."
-	read -p "Upgrade $WORLD_NAME? ([Y]es/[n]o/[c]lean) " continue
-	case "$continue" in
-	    [yY][eE][sS]|[yY]|"")
-		echo "Upgrading…"
-		[ -d "$world_dir"_old ] && rm -rf "$world_dir"_old
-		cp -r "$world_dir" "$world_dir"_old
-		verif
-		;;
-	    [cC][lL][eE][aA][nN]|[cC])
-		echo "Cleaning…"
-		[ -d "$world_dir"_old ] && rm -rf "$world_dir"_old
-		mv "$world_dir" "$world_dir"_old
-		verif
-		;;
-	    [nN][oO]|[nN])
-		echo "Skiping…"
-		return
-		;;
-	esac
-    fi
-    if [ ! -d "$world_dir" ]; then
-	mkdir -p "$world_dir/runes"
-	verif
-
-	local mt=$world_dir/world.mt
-	echo "Generating $mt""…"
-	
-	echo "gameid = nalc_game" > $mt
-	echo "enable_damage = true" >> $mt
-	echo "creative_mod = false" >> $mt
-        case $MAP_BACKEND in
-	    "sqlite3"|"")
-		echo "backend = sqlite3" >> $mt
-		;;
-	    "leveldb")
-		echo "backend = leveldb" >> $mt
-		;;
-	    "redis")
-		echo "backend = redis" >> $mt
-		read -p "redis_address? " val
-		echo "redis_address = $val" >> $mt
-		read -p "redis_hash? " val
-		echo "redis_hash = $val" >> $mt
-		read -p "redis_port? (6379) " val
-		[ -z $val ] && val=6379
-		echo "redis_port = $val" >> $mt
-		;;
-	    "postgresql")
-		echo "backend = postgresql" >> $mt
-		read -p "DB address? " val
-		read -p "DB user? " val2
-		read -p "DB password? " val3
-		read -p "DB name? " val4
-		read -p "DB port? (5432) " val5
-		[ -z $val5 ] && val5=5432
-		echo "pgsql_connection = host=$val port=$val5 user=$val2 password=$val3 dbname=$val4" >> $mt
-		;;
-	    "dummy")
-		echo "backend = dummy" >> $mt
-		;;
-	    *)
-		error "$MAP_BACKEND is not valid";;
-	esac
-	case $PLAYER_BACKEND in
-	    "sqlite3"|"")
-		echo "player_backend = sqlite3" >> $mt
-		;;
-	    "leveldb")
-		echo "player_backend = leveldb" >> $mt
-		;;
-	    "postgresql")
-		echo "player_backend = postgresql" >> $mt
-		read -p "DB address? ($val) " vval
-		read -p "DB user? ($val2) " vval2
-		read -p "DB password? ($val3) " vval3
-		read -p "DB name? (players-$val4) " vval4
-		read -p "DB port? ($val5) " vval5
-		[ -z $vval ] && vval=$val
-		[ -z $vval2 ] && vval2=$val2
-		[ -z $vval3 ] && vval3=$val3
-		[ -z $vval4 ] && vval4="players-$val4"
-		[ -z $vval5 ] && vval5=$val5
-		echo "pgsql_player_connection = host=$vval port=$vval5 user=$vval2 password=$vval3 dbname=$vval4" >> $mt
-		;;
-	    "dummy")
-		echo "player_backend = dummy" >> $mt
-		;;
-	    "files")
-		echo "player_backend = files" >> $mt
-		;;
-	    *)
-		error "$PLAYER_BACKEND is not valid";;
-	esac
-	case $AUTH_BACKEND in
-	    "sqlite3"|"")
-		echo "auth_backend = sqlite3" >> $mt
-		;;
-	    "leveldb")
-		echo "auth_backend = leveldb" >> $mt
-		;;
-	    "postgresql")
-		echo "auth_backend = postgresql" >> $mt
-		read -p "DB address? ($val) " vval
-		read -p "DB user? ($val2) " vval2
-		read -p "DB password? ($val3) " vval3
-		read -p "DB name? (auth-$val4) " vval4
-		read -p "DB port? ($val5) " vval5
-		[ -z $vval ] && vval=$val
-		[ -z $vval2 ] && vval2=$val2
-		[ -z $vval3 ] && vval3=$val3
-		[ -z $vval4 ] && vval4="auth-$val4"
-		[ -z $vval5 ] && vval5=$val5
-		echo "pgsql_auth_connection = host=$vval port=$vval5 user=$vval2 password=$vval3 dbname=$vval4" >> $mt
-		;;
-	    "files")
-		echo "auth_backend = files" >> $mt
-		;;
-	    *)
-		error "$AUTH_BACKEND is not valid";;
-	esac
-	case $MOD_STORAGE_BACKEND in
-	    "sqlite3"|"")
-		echo "mod_storage_backend = sqlite3" >> $mt
-		;;
-	    "files")
-		echo "mod_storage_backend = files" >> $mt
-		;;
-	    "dummy")
-		echo "mod_storage_backend = dummy" >> $mt
-		;;
-	    *)
-		error "$MOD_STORAGE_BACKEND is not valid";;
-	esac
-	read -p "Server announce? (y/N) " val
-	if [[ $val =~ [yY][eE][sS]|[yY] ]]; then
-	    echo "server_announce = true" >> $mt
-	else
-	    echo "server_announce = false" >> $mt
+	local world_dir="$MINETEST_DIR/worlds/$WORLD_NAME"
+	if [ -d "$world_dir" ]; then
+		echo "World $WORLD_NAME already exist."
+		read -p "Upgrade $WORLD_NAME? ([Y]es/[n]o/[c]lean) " continue
+		case "$continue" in
+			[yY][eE][sS]|[yY]|"")
+				echo "Upgrading…"
+				[ -d "$world_dir"_old ] && rm -rf "$world_dir"_old
+				cp -r "$world_dir" "$world_dir"_old
+				verif
+				;;
+			[cC][lL][eE][aA][nN]|[cC])
+				echo "Cleaning…"
+				[ -d "$world_dir"_old ] && rm -rf "$world_dir"_old
+				mv "$world_dir" "$world_dir"_old
+				verif
+				;;
+			[nN][oO]|[nN])
+				echo "Skiping…"
+				return
+				;;
+		esac
+	fi
+	if [ ! -d "$world_dir" ]; then
+		mkdir -p "$world_dir/runes"
+		verif
+
+		local mt=$world_dir/world.mt
+		echo "Generating $mt""…"
+
+		echo "gameid = nalc_game" > $mt
+		echo "enable_damage = true" >> $mt
+		echo "creative_mod = false" >> $mt
+		case $MAP_BACKEND in
+			"sqlite3"|"")
+				echo "backend = sqlite3" >> $mt
+				;;
+			"leveldb")
+				echo "backend = leveldb" >> $mt
+				;;
+			"redis")
+				echo "backend = redis" >> $mt
+				read -p "redis_address? " val
+				echo "redis_address = $val" >> $mt
+				read -p "redis_hash? " val
+				echo "redis_hash = $val" >> $mt
+				read -p "redis_port? (6379) " val
+				[ -z $val ] && val=6379
+				echo "redis_port = $val" >> $mt
+				;;
+			"postgresql")
+				echo "backend = postgresql" >> $mt
+				read -p "DB address? " val
+				read -p "DB user? " val2
+				read -p "DB password? " val3
+				read -p "DB name? " val4
+				read -p "DB port? (5432) " val5
+				[ -z $val5 ] && val5=5432
+				echo "pgsql_connection = host=$val port=$val5 user=$val2 password=$val3 dbname=$val4" >> $mt
+				;;
+			"dummy")
+				echo "backend = dummy" >> $mt
+				;;
+			*)
+				error "$MAP_BACKEND is not valid";;
+		esac
+		case $PLAYER_BACKEND in
+			"sqlite3"|"")
+				echo "player_backend = sqlite3" >> $mt
+				;;
+			"leveldb")
+				echo "player_backend = leveldb" >> $mt
+				;;
+			"postgresql")
+				echo "player_backend = postgresql" >> $mt
+				read -p "DB address? ($val) " vval
+				read -p "DB user? ($val2) " vval2
+				read -p "DB password? ($val3) " vval3
+				read -p "DB name? (players-$val4) " vval4
+				read -p "DB port? ($val5) " vval5
+				[ -z $vval ] && vval=$val
+				[ -z $vval2 ] && vval2=$val2
+				[ -z $vval3 ] && vval3=$val3
+				[ -z $vval4 ] && vval4="players-$val4"
+				[ -z $vval5 ] && vval5=$val5
+				echo "pgsql_player_connection = host=$vval port=$vval5 user=$vval2 password=$vval3 dbname=$vval4" >> $mt
+				;;
+			"dummy")
+				echo "player_backend = dummy" >> $mt
+				;;
+			"files")
+				echo "player_backend = files" >> $mt
+				;;
+			*)
+				error "$PLAYER_BACKEND is not valid";;
+		esac
+		case $AUTH_BACKEND in
+			"sqlite3"|"")
+				echo "auth_backend = sqlite3" >> $mt
+				;;
+			"leveldb")
+				echo "auth_backend = leveldb" >> $mt
+				;;
+			"postgresql")
+				echo "auth_backend = postgresql" >> $mt
+				read -p "DB address? ($val) " vval
+				read -p "DB user? ($val2) " vval2
+				read -p "DB password? ($val3) " vval3
+				read -p "DB name? (auth-$val4) " vval4
+				read -p "DB port? ($val5) " vval5
+				[ -z $vval ] && vval=$val
+				[ -z $vval2 ] && vval2=$val2
+				[ -z $vval3 ] && vval3=$val3
+				[ -z $vval4 ] && vval4="auth-$val4"
+				[ -z $vval5 ] && vval5=$val5
+				echo "pgsql_auth_connection = host=$vval port=$vval5 user=$vval2 password=$vval3 dbname=$vval4" >> $mt
+				;;
+			"files")
+				echo "auth_backend = files" >> $mt
+				;;
+			*)
+				error "$AUTH_BACKEND is not valid";;
+		esac
+		case $MOD_STORAGE_BACKEND in
+			"sqlite3"|"")
+				echo "mod_storage_backend = sqlite3" >> $mt
+				;;
+			"files")
+				echo "mod_storage_backend = files" >> $mt
+				;;
+			"dummy")
+				echo "mod_storage_backend = dummy" >> $mt
+				;;
+			*)
+				error "$MOD_STORAGE_BACKEND is not valid";;
+		esac
+		read -p "Server announce? (y/N) " val
+		if [[ $val =~ [yY][eE][sS]|[yY] ]]; then
+			echo "server_announce = true" >> $mt
+		else
+			echo "server_announce = false" >> $mt
+		fi
 	fi
-    fi
 }
 
 install_mtmapper() {
-    if [ ! -d "$DESTINATION/minetestmapper" ]; then
-	echo "Clone Minetest mapper…"
-	git clone --depth 1 $URL"/minetest/minetestmapper.git" "$DESTINATION/minetestmapper"
-	verif
-    else
-	echo "Upgrading Minetest mapper…"
+	if [ ! -d "$DESTINATION/minetestmapper" ]; then
+		echo "Clone Minetest mapper…"
+		git clone --depth 1 $URL"/minetest/minetestmapper.git" "$DESTINATION/minetestmapper"
+		verif
+	else
+		echo "Upgrading Minetest mapper…"
+		pushd "$DESTINATION/minetestmapper"
+		git pull
+		verif
+		popd
+	fi
+
 	pushd "$DESTINATION/minetestmapper"
-	git pull
+	cmake .
+	[ $? -eq 1 ] && error "CMake failed. Check dependencies"
+	make -j$(nproc)
 	verif
 	popd
-    fi
 
-    pushd "$DESTINATION/minetestmapper"
-    cmake .
-    [ $? -eq 1 ] && error "CMake failed. Check dependencies"
-    make -j$(nproc)
-    verif
-    popd
-
-    if [ ! -d "$DESTINATION/leaftest" ]; then
-	echo "Installing leaftest…"
-	git clone --recursive --depth 1 $URL"nalc/leaftest.git" "$DESTINATION/leaftest"
-	verif
-    else
-	echo "Upgrading leaftest…"
-	pushd "$DESTINATION/leaftest"
-	git pull
-	verif
-	popd
-    fi
+	if [ ! -d "$DESTINATION/leaftest" ]; then
+		echo "Installing leaftest…"
+		git clone --recursive --depth 1 $URL"nalc/leaftest.git" "$DESTINATION/leaftest"
+		verif
+	else
+		echo "Upgrading leaftest…"
+		pushd "$DESTINATION/leaftest"
+		git pull
+		verif
+		popd
+	fi
 }
 
 post_install() {
-    if [[ "$DESTINATION" != "$SCRIPT_DIR" ]]; then
-	cp "$SCRIPT_DIR/mods_disabled.txt" "$DESTINATION"
-    fi
+	if [[ "$DESTINATION" != "$SCRIPT_DIR" ]]; then
+		cp "$SCRIPT_DIR/mods_disabled.txt" "$DESTINATION"
+	fi
 
-    "$SCRIPT_DIR"/upgrade.sh -w $WORLD_NAME -b $BRANCH -s "$DESTINATION"
-    "$SCRIPT_DIR"/upgrade.sh -w $WORLD_NAME -b $BRANCH -f mtconf -s "$DESTINATION"
+	"$SCRIPT_DIR"/upgrade.sh -w $WORLD_NAME -b $BRANCH -s "$DESTINATION"
+	"$SCRIPT_DIR"/upgrade.sh -w $WORLD_NAME -b $BRANCH -f mtconf -s "$DESTINATION"
 
-    echo "Please, review and edit the following files:"
-    echo -e "\t- $MINETEST_DIR/minetest.conf"
-    echo -e "\t- $DESTINATION/mods_disabled.txt"
-    echo
-    
-    if [[ $MINETEST_MAPPER -eq 1 ]]; then
-	echo "The use of Minetest Mapper needs ImageMagick with fontconfig and truetype dependencies."
-	echo "You also need to allow read and write permissions for PS. The configuration can be found in the file that manage the security policy of ImageMagick."
-    fi
+	echo "Please, review and edit the following files:"
+	echo -e "\t- $MINETEST_DIR/minetest.conf"
+	echo -e "\t- $DESTINATION/mods_disabled.txt"
+	echo
+
+	if [[ $MINETEST_MAPPER -eq 1 ]]; then
+		echo "The use of Minetest Mapper needs ImageMagick with fontconfig and truetype dependencies."
+		echo "You also need to allow read and write permissions for PS. The configuration can be found in the file that manage the security policy of ImageMagick."
+	fi
 }
 
 action() {
-    echo "Preparing the installation…"
-    
-    SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" &> /dev/null && pwd)
-    DESTINATION="$1"
-    [ -z $DESTINATION ] && DESTINATION="$SCRIPT_DIR"
+	echo "Preparing the installation…"
 
-    GIT=$(which git)
-    CMAKE=$(which cmake)
-    MAKE=$(which make)
-    [ ! -e "$GIT" ] && error "git not found"
-    [ ! -e "$CMAKE" ] && error "cmake not found"
-    [ ! -e "$MAKE" ] && error "make not found"
-        
-    if [ -e "$DESTINATION/nalc.conf" ]; then
-	read -p "Previous installation is detected. Do you want to load previous settings? [Y/n] " continue	    
-	if [ -z $continue ] || [[ "$continue" =~ ^[yY][eE][sS]|[yY]$ ]]; then
-	    load_conf "$DESTINATION/nalc.conf"
+	SCRIPT_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" &> /dev/null && pwd)
+	DESTINATION="$1"
+	[ -z $DESTINATION ] && DESTINATION="$SCRIPT_DIR"
+
+	GIT=$(which git)
+	CMAKE=$(which cmake)
+	MAKE=$(which make)
+	[ ! -e "$GIT" ] && error "git not found"
+	[ ! -e "$CMAKE" ] && error "cmake not found"
+	[ ! -e "$MAKE" ] && error "make not found"
+
+	if [ -e "$DESTINATION/nalc.conf" ]; then
+		read -p "Previous installation is detected. Do you want to load previous settings? [Y/n] " continue	    
+		if [ -z $continue ] || [[ "$continue" =~ ^[yY][eE][sS]|[yY]$ ]]; then
+			load_conf "$DESTINATION/nalc.conf"
+		fi
 	fi
-    fi
 
-    [ -z $MINETEST_BIN ] && MINETEST_BIN=$(which minetestserver)
-    [ -z $MINETEST_DIR ] && MINETEST_DIR=~/.minetest
-    [ -z $MAP_BACKEND ] && MAP_BACKEND=sqlite3
-    [ -z $PLAYER_BACKEND ] && PLAYER_BACKEND=sqlite3
-    [ -z $AUTH_BACKEND ] && AUTH_BACKEND=sqlite3
-    [ -z $MOD_STORAGE_BACKEND ] && MOD_STORAGE_BACKEND=sqlite3
-    [ -z $MINETEST_MAPPER ] && MINETEST_MAPPER=0
-    [ -z $PORT ] && PORT=30000
-    [ -z $URL ] && URL="https://sys4.fr/gitea/"
-    [[ $URL =~ ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+$ ]] && URL="$URL:"
-    [ -z $BRANCH ] && BRANCH="stable"
-    [ -z $WORLD_NAME ] && WORLD_NAME="nalc"
-    [ ! -e $MINETEST_BIN ] && error "$MINETEST_BIN not found"
-    [ ! -d $MINETEST_DIR ] && error "$MINETEST_DIR not found"
+	[ -z $MINETEST_BIN ] && MINETEST_BIN=$(which minetestserver)
+	[ -z $MINETEST_DIR ] && MINETEST_DIR=~/.minetest
+	[ -z $MAP_BACKEND ] && MAP_BACKEND=sqlite3
+	[ -z $PLAYER_BACKEND ] && PLAYER_BACKEND=sqlite3
+	[ -z $AUTH_BACKEND ] && AUTH_BACKEND=sqlite3
+	[ -z $MOD_STORAGE_BACKEND ] && MOD_STORAGE_BACKEND=sqlite3
+	[ -z $MINETEST_MAPPER ] && MINETEST_MAPPER=0
+	[ -z $PORT ] && PORT=30000
+	[ -z $URL ] && URL="https://sys4.fr/gitea/"
+	[[ $URL =~ ^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]+$ ]] && URL="$URL:"
+	[ -z $BRANCH ] && BRANCH="stable"
+	[ -z $WORLD_NAME ] && WORLD_NAME="nalc"
+	[ ! -e $MINETEST_BIN ] && error "$MINETEST_BIN not found"
+	[ ! -d $MINETEST_DIR ] && error "$MINETEST_DIR not found"
 
-    
-    echo "Installation summary:"
-    echo -e "\t- Server files will be downloaded from $URL"
-    echo -e "\t- NALC server will be installed to $DESTINATION."
-    echo -e "\t- World of NALC will be installed to $MINETEST_DIR/worlds/$WORLD_NAME"
-    echo -e "\t- The minetestserver executable $MINETEST_BIN will be used."
-    echo -e "\t- The $MINETEST_DIR directory will be used."
-    echo -e "\t- $MAP_BACKEND will be used as map backend."
-    echo -e "\t- $PLAYER_BACKEND will be used as player backend."
-    echo -e "\t- $AUTH_BACKEND will be used as auth backend."
-    echo -e "\t- $MOD_STORAGE_BACKEND will be used as mod storage backend."
-    echo -e "\t- Port used: $PORT."
-    [ $MINETEST_MAPPER -eq 1 ] && echo -e "\t- Minetest mapper support added."
-    echo
 
-    read -p "Installation of NALC server will begin. Continue? [Y/n] " continue
-    if [ -z $continue ] || [[ "$continue" =~ ^[yY][eE][sS]|[yY]$ ]]; then
-	save_conf "$DESTINATION/nalc.conf"
-	install_game
-	install_mods
-	install_world
-	[ $MINETEST_MAPPER -eq 1 ] && install_mtmapper
-	post_install
-    fi
-    
-    echo "End of the NALC server installation. Good Bye!"
-    exit 0
+	echo "Installation summary:"
+	echo -e "\t- Server files will be downloaded from $URL"
+	echo -e "\t- NALC server will be installed to $DESTINATION."
+	echo -e "\t- World of NALC will be installed to $MINETEST_DIR/worlds/$WORLD_NAME"
+	echo -e "\t- The minetestserver executable $MINETEST_BIN will be used."
+	echo -e "\t- The $MINETEST_DIR directory will be used."
+	echo -e "\t- $MAP_BACKEND will be used as map backend."
+	echo -e "\t- $PLAYER_BACKEND will be used as player backend."
+	echo -e "\t- $AUTH_BACKEND will be used as auth backend."
+	echo -e "\t- $MOD_STORAGE_BACKEND will be used as mod storage backend."
+	echo -e "\t- Port used: $PORT."
+	[ $MINETEST_MAPPER -eq 1 ] && echo -e "\t- Minetest mapper support added."
+	echo
+
+	read -p "Installation of NALC server will begin. Continue? [Y/n] " continue
+	if [ -z $continue ] || [[ "$continue" =~ ^[yY][eE][sS]|[yY]$ ]]; then
+		save_conf "$DESTINATION/nalc.conf"
+		install_game
+		install_mods
+		install_world
+		[ $MINETEST_MAPPER -eq 1 ] && install_mtmapper
+		post_install
+	fi
+
+	echo "End of the NALC server installation. Good Bye!"
+	exit 0
 }
 
 [ $# -lt 0 ] && usage
@@ -441,47 +441,47 @@ OPT=$(getopt -o h,b:,d:,m:,p:,a:,s:,M,w:,P: -l help,minetest-bin:,minetest-dir:,
 set -- $OPT
 
 while true; do
-    case "$1" in
-	-h|--help)
-	    usage;;
-	-b|--minetest-bin)
-	    MINETEST_BIN=$(strip "$2")
-	    shift 2;;
-	-d|--minetest-dir)
-	    MINETEST_DIR=$(strip "$2")
-	    shift 2;;
-	-m|--map-backend)
-	    MAP_BACKEND=$(strip "$2")
-	    shift 2;;
-	-p|--player-backend)
-	    PLAYER_BACKEND=$(strip "$2")
-	    shift 2;;
-	-a|--auth-backend)
-	    AUTH_BACKEND=$(strip "$2")
-	    shift 2;;
-	-s|--mod-storage-backend)
-	    MOD_STORAGE_BACKEND=$(strip "$2")
-	    shift 2;;
-	-M|--minetest-mapper)
-	    MINETEST_MAPPER=1
-	    shift 1;;
-	-w|--world)
-	    WORLD_NAME=$(strip "$2")
-	    shift 2;;
-	-P|--port)
-	    PORT=$(strip $2)
-	    shift 2;;
-	--url)
-	    URL=$(strip "$2")
-	    shift 2;;
-	--branch)
-	    BRANCH=$(strip "$2")
-	    shift 2;;
-	--)
-	    shift;;
-	*)
-	    action $(strip "$1")
-	    shift;;
-    esac
+	case "$1" in
+		-h|--help)
+			usage;;
+		-b|--minetest-bin)
+			MINETEST_BIN=$(strip "$2")
+			shift 2;;
+		-d|--minetest-dir)
+			MINETEST_DIR=$(strip "$2")
+			shift 2;;
+		-m|--map-backend)
+			MAP_BACKEND=$(strip "$2")
+			shift 2;;
+		-p|--player-backend)
+			PLAYER_BACKEND=$(strip "$2")
+			shift 2;;
+		-a|--auth-backend)
+			AUTH_BACKEND=$(strip "$2")
+			shift 2;;
+		-s|--mod-storage-backend)
+			MOD_STORAGE_BACKEND=$(strip "$2")
+			shift 2;;
+		-M|--minetest-mapper)
+			MINETEST_MAPPER=1
+			shift 1;;
+		-w|--world)
+			WORLD_NAME=$(strip "$2")
+			shift 2;;
+		-P|--port)
+			PORT=$(strip $2)
+			shift 2;;
+		--url)
+			URL=$(strip "$2")
+			shift 2;;
+		--branch)
+			BRANCH=$(strip "$2")
+			shift 2;;
+		--)
+			shift;;
+		*)
+			action $(strip "$1")
+			shift;;
+	esac
 done
 
diff --git a/shutdown.sh b/shutdown.sh
index cd3331e..e81f6af 100755
--- a/shutdown.sh
+++ b/shutdown.sh
@@ -13,34 +13,34 @@ restart=0
 regenmap=0
 
 usage() {
-    echo "usage: ./shutdown.sh [-h|--help] [-r|--restart] [-b|--bak] [-u|--update]"
-    echo "Options:"
-    echo -e "\t-h --help\tAffiche cette aide."
-    echo -e "\t-r --restart\tRedémarre le serveur après arrêt."
-    echo -e "\t-b --bak\tRéalise une sauvegarde après arrêt."
-    echo -e "\t-u --update\tRéalise une mise à jour après arrêt."
-    echo -e "\t-m --regen-map\tRégénère une carte du monde."
-    exit 0
+	echo "usage: ./shutdown.sh [-h|--help] [-r|--restart] [-b|--bak] [-u|--update]"
+	echo "Options:"
+	echo -e "\t-h --help\tAffiche cette aide."
+	echo -e "\t-r --restart\tRedémarre le serveur après arrêt."
+	echo -e "\t-b --bak\tRéalise une sauvegarde après arrêt."
+	echo -e "\t-u --update\tRéalise une mise à jour après arrêt."
+	echo -e "\t-m --regen-map\tRégénère une carte du monde."
+	exit 0
 }
 
 action() {
-    kill -s TERM $(pidof minetestserver)
-    sleep 10
+	kill -s TERM $(pidof minetestserver)
+	sleep 10
 
-    kill -s TERM $(pidof -x $serverpath/start.sh)
+	kill -s TERM $(pidof -x $serverpath/start.sh)
 
-    [[ $bak -eq 1 ]] && $serverpath/backup.sh
-    if [ $regenmap -eq 1 ]; then
-	mount $mountpoint
-	sleep 3
-	$serverpath/genmap.sh $serverpath $world $mapdest
-	umount $mountpoint
-    fi
+	[[ $bak -eq 1 ]] && $serverpath/backup.sh
+	if [ $regenmap -eq 1 ]; then
+		mount $mountpoint
+		sleep 3
+		$serverpath/genmap.sh $serverpath $world $mapdest
+		umount $mountpoint
+	fi
 
-    [[ $update -eq 1 ]] && $serverpath/upgrade.sh -s $serverpath -m -w $world -b $branch -f $world_file
-    [[ $restart -eq 1 ]] && $serverpath/start.sh&
+	[[ $update -eq 1 ]] && $serverpath/upgrade.sh -s $serverpath -m -w $world -b $branch -f $world_file
+	[[ $restart -eq 1 ]] && $serverpath/start.sh&
 
-    exit 0
+	exit 0
 }
 
 # Pas de paramètre
@@ -56,25 +56,25 @@ OPT=$(getopt -o b,r,h,u,m -l bak,restart,help,update,regen-map -- "$@")
 set -- $OPT
 
 while true; do
-    case "$1" in
-        -b|--bak)
-            bak=1
-            shift;;
-        -r|--restart)
-            restart=1
-            shift;;
-	-h|--help)
-	    usage;;
-	-u|--update)
-	    update=1
-	    shift;;
-	-m|--regen-map)
-	    regenmap=1
-	    shift;;
-        --)
-            shift;;
-        *)
-            action
-            shift;;
-    esac
+	case "$1" in
+		-b|--bak)
+			bak=1
+			shift;;
+		-r|--restart)
+			restart=1
+			shift;;
+		-h|--help)
+			usage;;
+		-u|--update)
+			update=1
+			shift;;
+		-m|--regen-map)
+			regenmap=1
+			shift;;
+		--)
+			shift;;
+		*)
+			action
+			shift;;
+	esac
 done
diff --git a/start.sh.example b/start.sh.example
index 905d2b2..15536ed 100644
--- a/start.sh.example
+++ b/start.sh.example
@@ -12,10 +12,10 @@
 serverdir="$1"
 [ -z "$serverdir" ] && serverdir="$(pwd)"
 if [ ! -e "$serverdir/nalc.conf" ]; then
-    echo "ERROR: nalc.conf not found!"
-    exit 1
+	echo "ERROR: nalc.conf not found!"
+	exit 1
 else
-    . "$serverdir/nalc.conf"
+	. "$serverdir/nalc.conf"
 fi
 
 #DEBUG=$serverdir/logs/debug.log
@@ -27,13 +27,13 @@ fi
 #        echo "Server restarted at "`date` >>$MOREDEBUG
 #        echo "----------------------" >>$MOREDEBUG
 
-        echo "0" >/tmp/players_c.txt
+echo "0" >/tmp/players_c.txt
 
-        "$MINETEST_BIN" \
-                --world "$MINETEST_DIR/worlds/$WORLD_NAME/" \
-                --config "$MINETEST_DIR/minetest.conf" \
-                --gameid nalc_game \
-                --port $PORT \
-#                --logfile $DEBUG
+"$MINETEST_BIN" \
+	--world "$MINETEST_DIR/worlds/$WORLD_NAME/" \
+	--config "$MINETEST_DIR/minetest.conf" \
+	--gameid nalc_game \
+	--port $PORT \
+#	--logfile $DEBUG
 
 #done &>> $MOREDEBUG
diff --git a/upgrade.sh b/upgrade.sh
index ee782c5..43f5386 100755
--- a/upgrade.sh
+++ b/upgrade.sh
@@ -8,222 +8,222 @@ UP_MODS=0
 WORLD_FILE=all
 
 strip() {
-    echo $1 | cut -d \' -f 2
+	echo $1 | cut -d \' -f 2
 }
 
 verif() {
-    if [[ $? -gt 0 ]]; then
-				echo "Erreur ! Arrêt du script."
-				exit 1
-    fi
+	if [[ $? -gt 0 ]]; then
+		echo "Erreur ! Arrêt du script."
+		exit 1
+	fi
 }
 
 error() {
-    if [[ -n $1 ]]; then
-				echo "ERREUR : $1 !"
-    else
-				echo "ERREUR : paramètres invalides !" >&2
-				echo "utilisez l'option -h pour en savoir plus" >&2
-    fi
-    exit 1
+	if [[ -n $1 ]]; then
+		echo "ERREUR : $1 !"
+	else
+		echo "ERREUR : paramètres invalides !" >&2
+		echo "utilisez l'option -h pour en savoir plus" >&2
+	fi
+	exit 1
 }
 
 usage() {
-    echo "Usage : ./upgrade.sh [-h|--help] | [-s|--serverpath <path>] [-m|--mods] [ -w|--world <world> < -b|--branch <branch> [-f|--world-file <arg>] > ]"
-    echo "WARNING: This is for an experimental usage. Don't use it!"
-    echo "Options:"
-    echo -e "\t-h --help\t\tAffiche cette aide"
-    echo -e "\t-s --serverpath <path>\tRépertoire racine du serveur"
-    echo -e "\t-m --mods\t\tMet à jour les mods"
-    echo -e "\t-w --world <name>\tNom de la carte"
-    echo -e "\t-b --branch <branch>\tBranche concerné"
-    echo -e "\t-f --world-file <arg>\tFichier(s) a mettre à jour :"
-    echo -e "\t<arg> doit être une des valeur suivante :"
-    echo -e "\tall\t\tToutes les mise à jour suivantes seront executés sauf 'mtconf'"
-    echo -e "\tnews\t\tLes news du serveur"
-    echo -e "\ttechnic\t\tLes paramètres de technic"
-    echo -e "\tfbn\t\tLes paramètres de forbidden_names"
-    echo -e "\tfbnp\t\tLes paramètres de forbidden_names_patterns"
-    echo -e "\tbitchange\tLes paramètres de bitchange"
-    echo -e "\tchristmas\tLes paramètres de christmas_craft"
-    echo -e "\trandommsg\tLes messages aléatoires"
-    echo -e "\tworldmt\tRégénère le fichier world.mt (peut-être utile avec l'option -m)"
-    echo -e "\tmtconf\tMet à jour le fichier minetest.conf"
-    echo "Exemples:"
-    echo -e "\tMise à jour des mods :"
-    echo -e "\t$ ./upgrade.sh -m"
-    echo -e "\tMise à jour du fichier minetest.conf :"
-    echo -e "\t$ ./upgrade.sh -w nalc-stable -b stable -f mtconf"
-    echo -e "\tMise à jour complète (mods et fichiers world, sauf minetest.conf) :"
-    echo -e "\t$ ./upgrade.sh -m -w nalc-stable -b stable"
+	echo "Usage : ./upgrade.sh [-h|--help] | [-s|--serverpath <path>] [-m|--mods] [ -w|--world <world> < -b|--branch <branch> [-f|--world-file <arg>] > ]"
+	echo "WARNING: This is for an experimental usage. Don't use it!"
+	echo "Options:"
+	echo -e "\t-h --help\t\tAffiche cette aide"
+	echo -e "\t-s --serverpath <path>\tRépertoire racine du serveur"
+	echo -e "\t-m --mods\t\tMet à jour les mods"
+	echo -e "\t-w --world <name>\tNom de la carte"
+	echo -e "\t-b --branch <branch>\tBranche concerné"
+	echo -e "\t-f --world-file <arg>\tFichier(s) a mettre à jour :"
+	echo -e "\t<arg> doit être une des valeur suivante :"
+	echo -e "\tall\t\tToutes les mise à jour suivantes seront executés sauf 'mtconf'"
+	echo -e "\tnews\t\tLes news du serveur"
+	echo -e "\ttechnic\t\tLes paramètres de technic"
+	echo -e "\tfbn\t\tLes paramètres de forbidden_names"
+	echo -e "\tfbnp\t\tLes paramètres de forbidden_names_patterns"
+	echo -e "\tbitchange\tLes paramètres de bitchange"
+	echo -e "\tchristmas\tLes paramètres de christmas_craft"
+	echo -e "\trandommsg\tLes messages aléatoires"
+	echo -e "\tworldmt\tRégénère le fichier world.mt (peut-être utile avec l'option -m)"
+	echo -e "\tmtconf\tMet à jour le fichier minetest.conf"
+	echo "Exemples:"
+	echo -e "\tMise à jour des mods :"
+	echo -e "\t$ ./upgrade.sh -m"
+	echo -e "\tMise à jour du fichier minetest.conf :"
+	echo -e "\t$ ./upgrade.sh -w nalc-stable -b stable -f mtconf"
+	echo -e "\tMise à jour complète (mods et fichiers world, sauf minetest.conf) :"
+	echo -e "\t$ ./upgrade.sh -m -w nalc-stable -b stable"
 }
 
 regen_worldmt() {
-    local worldfile="$MINETEST_DIR/worlds/$WORLD_NAME/world.mt"
+	local worldfile="$MINETEST_DIR/worlds/$WORLD_NAME/world.mt"
 
-    echo "Regénération du fichier $worldfile..."
+	echo "Regénération du fichier $worldfile..."
 
-    # Faire une sauvegarde du fichier world.mt actuel
-    cp "$worldfile" "$worldfile".bak
-    
-    # Créer un nouveau fichier temporaire sans les lignes commençant par load_mod
-    local i=0
-    cat "$worldfile" | while read -r line; do
-				local match=$(echo $line | grep load_mod_)
-				if [[ -z $match ]]; then
-						if [[ $i -eq 0 ]]; then
-								echo $line > /tmp/world.mt
-						else
-								echo $line >> /tmp/world.mt
-						fi
-				fi
+	# Faire une sauvegarde du fichier world.mt actuel
+	cp "$worldfile" "$worldfile".bak
 
-				i=$(( $i+1 ))
-    done
-    
-    # Recréation des liens symboliques des mods dans le dossier minetest
-    # et générer une ligne "load_mod_<mod> = true ou false" pour chaque mod
-    # et l'ajouter au fichier
-		#    local mods_path=$serverpath/nalc-server-mods
-    local mods="$MINETEST_DIR/mods"
-    local mods_custom="$serverpath/custom/mods"
-    
-    # Suppression d'éventuels liens symboliques du dossier des mods
-    ls "$mods" | while read -r mod; do
-				[ -L "$mods/$mod" ] && rm -f "$mods/$mod"
-    done
+	# Créer un nouveau fichier temporaire sans les lignes commençant par load_mod
+	local i=0
+	cat "$worldfile" | while read -r line; do
+		local match=$(echo $line | grep load_mod_)
+		if [[ -z $match ]]; then
+			if [[ $i -eq 0 ]]; then
+				echo $line > /tmp/world.mt
+			else
+				echo $line >> /tmp/world.mt
+			fi
+		fi
 
-    if [ -d "$mods_custom" ]; then
-				ls $mods_custom | while read -r mod; do
-						[ -d $mods_custom/$mod ] && ln -s $mods_custom/$mod $mods/$mod
+		i=$(( $i+1 ))
+	done
+
+	# Recréation des liens symboliques des mods dans le dossier minetest
+	# et générer une ligne "load_mod_<mod> = true ou false" pour chaque mod
+	# et l'ajouter au fichier
+	#    local mods_path=$serverpath/nalc-server-mods
+	local mods="$MINETEST_DIR/mods"
+	local mods_custom="$serverpath/custom/mods"
+
+	# Suppression d'éventuels liens symboliques du dossier des mods
+	ls "$mods" | while read -r mod; do
+		[ -L "$mods/$mod" ] && rm -f "$mods/$mod"
+	done
+
+	if [ -d "$mods_custom" ]; then
+		ls $mods_custom | while read -r mod; do
+			[ -d $mods_custom/$mod ] && ln -s $mods_custom/$mod $mods/$mod
+		done
+	fi
+
+	# Liste des mods à désactiver
+	readarray -t md < "$serverpath/mods_disabled.txt"
+
+	# Populate world.mt
+	ls "$mods" | while read -r mod; do
+		if [ -d $mods/$mod ]; then
+			if [ -e $mods/$mod/init.lua ]; then
+				local mod_enable="true"
+				for (( modn=0; modn<${#md[@]}; modn++ )); do
+					[ ${md[$modn]} == $mod ] && mod_enable="false"
 				done
-    fi
+				echo "load_mod_$mod = $mod_enable" >> /tmp/world.mt
+			else
+				ls "$mods/$mod" | while read -r submod; do
+					if [ -d "$mods/$mod/$submod" ]; then
+						local mod_enable="true"
+						for (( modn=0; modn<${#md[@]}; modn++ )); do
+							[ ${md[$modn]} == $submod ] && mod_enable="false"
+						done
+						echo "load_mod_$submod = $mod_enable" >> /tmp/world.mt
+					fi
+				done
+			fi
+		fi
+	done
 
-    # Liste des mods à désactiver
-    readarray -t md < "$serverpath/mods_disabled.txt"
+	# Remplacement du l'ancien world.mt par le nouveau
+	mv /tmp/world.mt "$MINETEST_DIR/worlds/$WORLD_NAME/world.mt"
 
-    # Populate world.mt
-    ls "$mods" | while read -r mod; do
-				if [ -d $mods/$mod ]; then
-						if [ -e $mods/$mod/init.lua ]; then
-								local mod_enable="true"
-								for (( modn=0; modn<${#md[@]}; modn++ )); do
-										[ ${md[$modn]} == $mod ] && mod_enable="false"
-								done
-								echo "load_mod_$mod = $mod_enable" >> /tmp/world.mt
-						else
-								ls "$mods/$mod" | while read -r submod; do
-										if [ -d "$mods/$mod/$submod" ]; then
-												local mod_enable="true"
-												for (( modn=0; modn<${#md[@]}; modn++ )); do
-														[ ${md[$modn]} == $submod ] && mod_enable="false"
-												done
-												echo "load_mod_$submod = $mod_enable" >> /tmp/world.mt
-										fi
-								done
-						fi
-				fi
-    done
-
-    # Remplacement du l'ancien world.mt par le nouveau
-    mv /tmp/world.mt "$MINETEST_DIR/worlds/$WORLD_NAME/world.mt"
-
-    echo "Regénération terminé."
+	echo "Regénération terminé."
 }
 
 update_mods() {
-    local mods_path="$MINETEST_DIR/mods"
-    [ ! -d "$mods_path" ] && error "$mods_path not found"
+	local mods_path="$MINETEST_DIR/mods"
+	[ ! -d "$mods_path" ] && error "$mods_path not found"
 
-    pushd "$mods_path" > /dev/null 2>&1
-    git pull
-    verif
-    git submodule update --init --recursive
-    verif
-    popd > /dev/null 2>&1
+	pushd "$mods_path" > /dev/null 2>&1
+	git pull
+	verif
+	git submodule update --init --recursive
+	verif
+	popd > /dev/null 2>&1
 }
 
 update_world() {
-    local world_repos="$SCRIPT_DIR/world"
-    local world_dest="$MINETEST_DIR/worlds/$WORLD_NAME"
+	local world_repos="$SCRIPT_DIR/world"
+	local world_dest="$MINETEST_DIR/worlds/$WORLD_NAME"
 
-    if [ ! -d "$world_repos" ]; then
-				error "$world_repos not found"
-    fi
-    if [ ! -d "$world_dest" ]; then
-				error "$world_dest not found"
-    fi
+	if [ ! -d "$world_repos" ]; then
+		error "$world_repos not found"
+	fi
+	if [ ! -d "$world_dest" ]; then
+		error "$world_dest not found"
+	fi
 
-    if [ $WORLD_FILE == "all" ]; then
-				WORLD_FILE="moretrees news technic fbn fbnp bitchange christmas randommsg worldmt"
-    fi
+	if [ $WORLD_FILE == "all" ]; then
+		WORLD_FILE="moretrees news technic fbn fbnp bitchange christmas randommsg worldmt"
+	fi
 
-    for w_file in $WORLD_FILE; do
-				local file=""
-				local file_dest=""
-				local do_copy=1
-				case $w_file in
-						moretrees)
-								file_dest=$world_dest/moretrees_settings.txt
-								file=$world_repos/moretrees_settings-$BRANCH.txt;;
-						news)
-								file_dest=$world_dest/news.txt
-								file=$world_repos/news-$BRANCH.txt;;
-						technic)
-								file_dest=$world_dest/technic.conf
-								file=$world_repos/technic-$BRANCH.conf;;
-						fbn)
-								file_dest=$world_dest/forbidden_names.txt
-								file=$world_repos/forbidden_names-$BRANCH.txt;;
-						fbnp)
-								file_dest=$world_dest/forbidden_names_patterns.txt
-								file=$world_repos/forbidden_names_patterns-$BRANCH.txt;;
-						bitchange)
-								file_dest=$world_dest/bitchange_config.txt
-								file=$world_repos/bitchange_config-$BRANCH.txt;;
-						christmas)
-								file_dest=$world_dest/christmas_craft.conf
-								file=$world_repos/christmas_craft-$BRANCH.conf;;
-						randommsg)
-								file_dest=$world_dest/random_messages
-								file=$world_repos/random_messages-$BRANCH;;
-						worldmt)
-								do_copy=0
-								regen_worldmt;;
-						mtconf) # Exception ici car n'est pas un fichier world. Doit être appelé seul.
-								file_dest="$MINETEST_DIR/minetest.conf"
-								file="$SCRIPT_DIR/minetest-$BRANCH.conf";;
-						*)
-								error;;
-				esac
+	for w_file in $WORLD_FILE; do
+		local file=""
+		local file_dest=""
+		local do_copy=1
+		case $w_file in
+			moretrees)
+				file_dest=$world_dest/moretrees_settings.txt
+				file=$world_repos/moretrees_settings-$BRANCH.txt;;
+			news)
+				file_dest=$world_dest/news.txt
+				file=$world_repos/news-$BRANCH.txt;;
+			technic)
+				file_dest=$world_dest/technic.conf
+				file=$world_repos/technic-$BRANCH.conf;;
+			fbn)
+				file_dest=$world_dest/forbidden_names.txt
+				file=$world_repos/forbidden_names-$BRANCH.txt;;
+			fbnp)
+				file_dest=$world_dest/forbidden_names_patterns.txt
+				file=$world_repos/forbidden_names_patterns-$BRANCH.txt;;
+			bitchange)
+				file_dest=$world_dest/bitchange_config.txt
+				file=$world_repos/bitchange_config-$BRANCH.txt;;
+			christmas)
+				file_dest=$world_dest/christmas_craft.conf
+				file=$world_repos/christmas_craft-$BRANCH.conf;;
+			randommsg)
+				file_dest=$world_dest/random_messages
+				file=$world_repos/random_messages-$BRANCH;;
+			worldmt)
+				do_copy=0
+				regen_worldmt;;
+			mtconf) # Exception ici car n'est pas un fichier world. Doit être appelé seul.
+				file_dest="$MINETEST_DIR/minetest.conf"
+				file="$SCRIPT_DIR/minetest-$BRANCH.conf";;
+			*)
+				error;;
+		esac
 
-				if [ $do_copy -eq 1 ]; then
-						[ ! -e $file ] && error "Le fichier $file n'existe pas"
-						
-						echo "Copie de $file vers $file_dest"
-						cp -up $file $file_dest
-				fi
-    done
+		if [ $do_copy -eq 1 ]; then
+			[ ! -e $file ] && error "Le fichier $file n'existe pas"
+
+			echo "Copie de $file vers $file_dest"
+			cp -up $file $file_dest
+		fi
+	done
 }
 
 action() {
-    [ ! -d "$serverpath" ] && error "$serverpath not found"
-    . "$serverpath/nalc.conf"
+	[ ! -d "$serverpath" ] && error "$serverpath not found"
+	. "$serverpath/nalc.conf"
 
-    if [ $UP_MODS -eq 1 ]; then
-				echo "Updating $MINETEST_DIR/mods…"
-				update_mods
-				echo "Mods updated."
-				exit 0
-    fi
+	if [ $UP_MODS -eq 1 ]; then
+		echo "Updating $MINETEST_DIR/mods…"
+		update_mods
+		echo "Mods updated."
+		exit 0
+	fi
 
-    if [ -n $WORLD_NAME ] && [ -n $BRANCH ]; then
-				echo "Updating $WORLD_FILE from $WORLD_NAME and branch $BRANCH"…
-				update_world
-				echo "World files updated."
-    elif [ -n $WORLD_NAME ] || [ -n $BRANCH ]; then
-				error
-    fi
+	if [ -n $WORLD_NAME ] && [ -n $BRANCH ]; then
+		echo "Updating $WORLD_FILE from $WORLD_NAME and branch $BRANCH"…
+		update_world
+		echo "World files updated."
+	elif [ -n $WORLD_NAME ] || [ -n $BRANCH ]; then
+		error
+	fi
 }
 
 # Pas de paramètre
@@ -237,32 +237,32 @@ options=$(getopt -o h,s:,m,w:,b:,f: -l help,serverpath:,mods,world:,branch:,worl
 set -- $options
 
 while true; do
-    case "$1" in
-				-h|--help)
-						usage
-						exit 0;;
-				-s|--serverpath)
-						serverpath=$(strip $2)
-						shift 2;;
-				-m|--mods)
-						UP_MODS=1
-						shift;;
-				-w|--world)
-						WORLD_NAME=$(strip $2)
-						shift 2;;
-				-b|--branch)
-						BRANCH=$(strip $2)
-						shift 2;;
-				-f|--world-file)
-						WORLD_FILE=$(strip $2)
-						shift 2;;
-				--)
-						shift;;
-				*)
-						action
-						exit 0
-						shift;;
-    esac
+	case "$1" in
+		-h|--help)
+			usage
+			exit 0;;
+		-s|--serverpath)
+			serverpath=$(strip $2)
+			shift 2;;
+		-m|--mods)
+			UP_MODS=1
+			shift;;
+		-w|--world)
+			WORLD_NAME=$(strip $2)
+			shift 2;;
+		-b|--branch)
+			BRANCH=$(strip $2)
+			shift 2;;
+		-f|--world-file)
+			WORLD_FILE=$(strip $2)
+			shift 2;;
+		--)
+			shift;;
+		*)
+			action
+			exit 0
+			shift;;
+	esac
 done
 
 exit 0