factorio-pauser.sh

  #!/bin/bash
    PATHTOLOG="/root/factorio/factorio-current.log"
     
    OLDPLAYERCOUNT=0
    PLAYERCOUNT=0
    NUMBEROFLINESOLD=0
     
    while :; do
      #get the current nuber of log entries
      NUMBEROFLINES=$(wc -l /root/factorio/factorio-current.log | grep -o "[0-9]\+")
      ABSOLUTELINES=$((NUMBEROFLINES-NUMBEROFLINESOLD))
      #only look at new lines
      TAILEDLOG=$(tail -$ABSOLUTELINES $PATHTOLOG)
      #grab Joins PlayerJoinGame
      JOINSGAME=$(echo $TAILEDLOG | grep "MultiplayerManager changing state from(InGameSendingMap) to(InGame)" | wc -l | grep -o "[0-9]\+")
      #grab peer leaving
      QUITS=$(echo $TAILEDLOG | grep "PlayerLeaveGame" | wc -l | grep -o "[0-9]\+")
      #grab peer timeout
      DROPOUTS=$(echo $TAILEDLOG | grep "is not responding, dropping" | wc -l | grep -o "[0-9]\+")
      BOOT=$(echo $TAILEDLOG | grep "MultiplayerManager changing state from(CreatingGame) to(InGame)" | wc -l | grep -o "[0-9]\+")
      QUITS=$((QUITS+DROPOUTS))
      echo "QUITS: "$QUITS
      JOINS=$((JOINSGAME))
      echo "JOINS: "$JOINS
      echo "JOINSGAME:"$JOINSGAME
      PLAYERCOUNT=$((PLAYERCOUNT+JOINS))
      PLAYERCOUNT=$((PLAYERCOUNT-QUITS))
      if [ $BOOT -eq 1 ]
      then
        WID=$(xdotool search Factorio 2>/dev/null)
        xdotool windowactivate --sync $WID
        xdotool key Escape
        xdotool key shift+space
      fi
     
      if [ $PLAYERCOUNT -eq 1 -a $OLDPLAYERCOUNT -eq 0 ]
      then
        echo "detected players, unpausing"
        WID=$(xdotool search Factorio 2>/dev/null)
        xdotool windowactivate --sync $WID
        xdotool key shift+space
      fi
      if [ $PLAYERCOUNT -eq 0 -a $OLDPLAYERCOUNT -eq 1 ]
      then
        echo "0 players, pausing"
        WID=$(xdotool search Factorio 2>/dev/null)
        xdotool windowactivate --sync $WID
        xdotool key shift+space
      fi
     
     
      #REMOVE the following line if you don't want to see current players.
      echo $PLAYERCOUNT
     
      OLDPLAYERCOUNT=$PLAYERCOUNT
      NUMBEROFLINESOLD=$NUMBEROFLINES
      #change to number of seconds between player count update [default: 1 sec]
      sleep 1
    done