Here is the script :

#!/bin/bash
# hedgewars_on_lenny.sh
# Script to install hedgewars on a debian lenny
# It installs the latest version avaiable
# For dependencies install, it requires sudo.

# Bug reports and suggestions : 


check_dep() 
{

PACKAGES="mercurial cmake qt4-qmake libqt4-dev libsdl1.2-dev libsdl-net1.2-dev libsdl-mixer1.2-dev libsdl-image1.2-dev libsdl-ttf2.0-dev liblua5.1-dev fpc "

	echo -e  "These packages have to be installed, let's check : \n"
	echo -e $PACKAGES \n
	for i in $PACKAGES; do
	# test if package is installed
		if [ "$(dpkg-query -s $i | grep Status |awk '{print $4}' )" = "installed" ]; then
			echo -e "Package $i seems to be installed \n"
		else
			echo -e "We need $i \n"
			echo -e "Installing $i \n"
			echo -e "apt-get install $i \n"
			sudo apt-get install $i

		fi

	done
}
check_dep_wserver() 
{

PACKAGES="mercurial cmake qt4-qmake libqt4-dev libsdl1.2-dev libsdl-net1.2-dev libsdl-mixer1.2-dev libsdl-image1.2-dev libsdl-ttf2.0-dev liblua5.1-dev fpc ghc6 libghc6-dataenc-dev libghc6-hslogger-dev libghc6-utf8-string-dev"

	echo -e  "These packages have to be installed, let's check : \n"
	echo -e $PACKAGES \n
	for i in $PACKAGES; do
	# test if package is installed
		if [ "$(dpkg-query -s $i | grep Status |awk '{print $4}' )" = "installed" ]; then
			echo -e "Package $i seems to be installed \n"
		else
			echo -e "We need $i \n"
			echo -e "Installing $i \n"
			echo -e "apt-get install $i \n"
			sudo apt-get install $i

		fi

	done
}


install_() 
{
	if [ "$1" != "-i" ] || [ "$1" != "-s" ]; then
	echo "usage : "
	echo " hedgewars_on_lenny.sh -i : install"
	echo " hedgewars_on_lenny.sh -s : install with server"
	fi
	case $1 in
	
	"-i" )
		check_dep
		echo "Let's download the source code :"

#		wget http://fireforge.net/frs/download.php/541/hedgewars-src-0.9.13.tar.bz2
#		tar -xvjz hedgewars*.tar.bz2

		hg clone https://hedgewars.googlecode.com/hg/ hedgewars

		if [ -d hedgewars ]; then
			cd hedgewars
			echo -e "Starting to compile \n"
			cmake .
			make
			sudo make install
		else
			echo -e "I can't find hedgewars directory \n"
			exit 666
		fi
		;;
	"-s" )
		check_dep_wserver
		echo "Let's download the source code :"
		hg clone https://hedgewars.googlecode.com/hg/ hedgewars

		if [ -d hedgewars ]; then
			cd hedgewars
			echo -e "Starting to compile with server \n"
			cmake -DWITH_SERVER=1 .
			make
			sudo make install
		else
			echo -e "I can't find hedgewars directory \n"
			exit 666
		fi
		;;
	esac

}

echo "Welcome in the compiling hedgewars script"
install_ $1


exit 0