improve game handling

and add comments to installer

etc/change_hardcoded_world_name_first/mts-ENLIVEN

@@ -25,5 +25,8 @@ fi
 # NOTE: if only title is set, screen -x must be used to resume, so use -S <name> to resume with -r <name>
 # screen -S MinetestServer minetestserver --gameid ENLIVEN --worldname FCAGameAWorld
 # screen -S MinetestServer /home/owner/minetest/bin/minetestserver --gameid ENLIVEN --worldname FCAGameAWorld
-screen -S MinetestServer $mts --gameid ENLIVEN --worldname FCAGameAWorld
+MT_MYWORLD_NAME="FCAWorldB"
-
+screen -S MinetestServer $mts --gameid ENLIVEN --worldname $MT_MYWORLD_NAME
+if [ ! -d "$HOME/.minetest/worlds/" ]; then
+  echo "ERROR: missing $HOME/.minetest/worlds/$MT_MYWORLD_NAME"
+fi

etc/game-install-ENLIVEN

@@ -14,6 +14,17 @@
 
 # ISSUES:
 # * ERROR[Main]: Singleplayer mode says following mods could not be found: 3d_armor areas mobs mobs_animal mobs_monster protector technic treasurer unified_inventory xban2
+# * update git discarding local changes:
+#   (see https://stackoverflow.com/questions/4157189/git-pull-while-ignoring-local-changes)
+#   git fetch --all
+#   git reset --hard origin/master
+#   git pull
+#   #"even works when u have committed ur local changes, but still u want to revert" -agsachin
+#
+#   #git reset --hard
+#   #git pull
+#   #git clean -xdf
+#   #-f remove untracked files, -d remove untracked directories, -x remove untracked OR ignored
 sudo echo "starting ENLIVEN installer script..."