#!/bin/bash

# Copyright (C) 2012 LAFKON/Christoph Haag.
#
# This is free software, and you may redistribute it under the GPL.
# This Software comes with absolutely no warranty.
# For details see the license (http://www.lafkon.net/gpl.txt)

 VERT=5   #VERT=$1
 HORIZ=4  #HORIZ=$2
 LSBASE=i/free/cols+rows
 FILETYPE=gif
 TMPDIR=tmp

 TILEDIRFREE=i/free/gif
 TILEDIRNONFREE=i/non-free/gif

 ls ${TILEDIRFREE}/*.${FILETYPE} > ${TMPDIR}/freetiles.list
#-------------------------------------------------------------------#
 selectTile () {
    #???RNDMZR=
    #RNDMZR=`ls ${TILEDIRFREE}/*.${FILETYPE} \
    #        $TILEDIRNONFREE/*.${FILETYPE} |\
    #        grep _${F1}_${F2}_${F3}_${F4}_\.${FILETYPE}$ |\
    #        shuf -n 1`

    RNDMZR=`cat ${TMPDIR}/freetiles.list | \
            grep _${F1}_${F2}_${F3}_${F4}_\.${FILETYPE}$ |\
            shuf -n 1`
     echo $RNDMZR
  #   echo $TILEPATH/$RNDMZR >> $LS	
     echo $RNDMZR >> $LS	
    # -- ABBRUCH ------------- #
     if [ -z $RNDMZR ]; then 
          J=`expr $J + 1000`; 
          I=`expr $I + 1000`; 
          rm -r $LSDIR
          RUN=`expr $RUN - 1`
          echo "ABBRUCH"
     fi
    # -- ABBRUCH ------------- #
   }
#-------------------------------------------------------------------#

 RUN=0
 while [ $RUN -lt 10 ]
  do
     LSDIR=${LSBASE}/${VERT}x${HORIZ}/`date +%s%N | cut -c 1-15`
     mkdir $LSDIR; echo; echo $LSDIR
 J=1
 while [ $J -le $VERT ]
  do
    LS=$J.list
    I=1 
  while [ $I -le $HORIZ ]
   do
	LSBEFORE=$LSDIR/$((J - 1)).list 
	LINE=`expr $HORIZ + 1 - $I`

	if [ $J -gt 1 ]
        then
            F1=.*
            F3=`sed -n "$((LINE))p" $LSBEFORE  | cut -d _ -f 2`
        else
            F3=0
            F1=.*
	fi

        if [ $J -ge $((VERT - 3)) ]; then
            F1=.*
            #echo "JETZT EINS"
        fi

        if [ $J -ge $((VERT - 0)) ]; then
            F1=0
            #echo "JETZT NULL"
        fi

 if [ $I -le 1 ]
	then
              # F1=.*
              F2=0
              # F3 IS DEFINED AT LOOPSTART
              F4=.*

        selectTile

	I=`expr $I + 1`

 elif [ $I -lt $HORIZ ]
	then
              # F1=.*
              #F2=$F4 
              F2=`echo $RNDMZR | rev | cut -d "_" -f 2 | rev`
              # F3 IS DEFINED AT LOOPSTART
              F4=.*

        selectTile

	I=`expr $I + 1`	
 else
              # F1=.*
              #F2=$F4 
              F2=`echo $RNDMZR | rev | cut -d "_" -f 2 | rev`
              # F3 IS DEFINED AT LOOPSTART
              F4=0

        selectTile

	I=`expr $I + 1`
 fi

   done

  # ZEILEN UMDREHEN UND WIEDER AUSGEBEN #
  sed '1!G;h;$!d' $LS > /tmp/$LS.tmp
  rm $LS
  cat /tmp/$LS.tmp > $LSDIR/$LS

  J=`expr $J + 1`

 done

 RUN=`expr $RUN + 1`

done


exit 0;