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Add difficulty knob. #32

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Merged
merged 4 commits into from
Jun 11, 2015
Merged

Add difficulty knob. #32

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b863702
Add difficulty knob.
Jun 10, 2015
ebc0405
typo.
Jun 10, 2015
99b884f
Add note to README about setting world difficulty.
Jun 10, 2015
53a0d0c
Default to easy.
Jun 10, 2015
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2 changes: 1 addition & 1 deletion minecraft-server/Dockerfile
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Original file line number Diff line number Diff line change
Expand Up @@ -31,4 +31,4 @@ ENV MC_IMAGE=YES
ENV UID=1000
ENV MOTD A Minecraft Server Powered by Docker
ENV JVM_OPTS -Xmx1024M -Xms1024M
ENV TYPE=VANILLA VERSION=LATEST LEVEL=world PVP=true
ENV TYPE=VANILLA VERSION=LATEST LEVEL=world PVP=true DIFFICULTY=easy
10 changes: 10 additions & 0 deletions minecraft-server/README.md
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Expand Up @@ -128,6 +128,16 @@ up:

## Server configuration

### Difficulty

The difficulty level (default: `easy`) can be set like:

docker run -d -e DIFFICULTY=hard

Valid values are: `peaceful`, `easy`, `normal`, and `hard`, and an
error message will be output in the logs if it's not one of these
values.

### Op/Administrator Players

To add more "op" (aka adminstrator) users to your Minecraft server, pass the Minecraft usernames separated by commas via the `OPS` environment variable, such as
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22 changes: 22 additions & 0 deletions minecraft-server/start-minecraft.sh
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Expand Up @@ -97,6 +97,28 @@ if [ ! -e server.properties ]; then
sed -i "/pvp\s*=/ c pvp=$PVP" /data/server.properties
fi

if [ -n "$DIFFICULTY" ]; then
case $DIFFICULTY in
peaceful)
DIFFICULTY=0
;;
easy)
DIFFICULTY=1
;;
normal)
DIFFICULTY=2
;;
hard)
DIFFICULTY=3
;;
*)
echo "DIFFICULTY must be peaceful, easy, normal, or hard."
exit 1
;;
esac
sed -i "/difficulty\s*=/ c difficulty=$DIFFICULTY" /data/server.properties
fi

if [ -n "$MODE" ]; then
case ${MODE,,?} in
0|1|2|3)
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