1 files changed, 130 insertions, 0 deletions
diff --git a/launch.sh b/launch.sh
new file mode 100755
index 0000000..b253720
--- /dev/null
+++ b/launch.sh
@@ -0,0 +1,130 @@
+#!/usr/bin/env sh
+
+PLATFORM=$(uname -s | tr '[:upper:]' '[:lower:]')
+
+# Only accepts 1 argument: the Minecraft profile to launch
+INAME=
+if [ -z "${1}" ]; then
+	echo "ERROR: Requires one argument (the Minecraft instance to launch)"
+	exit 1
+else
+	INAME="${1}"
+fi
+
+# Setup and read configurations
+JAVA=java
+MCUSER=Player
+JARGS='-Xms512M -Xmx1024M'
+
+VERSION=
+
+BLACKLISTED_LIBRARIES=
+BLACKLISTED_NATIVES=
+
+ADDITIONAL_LIBRARIES=
+
+XARGS=
+
+if [ -f 'user.local' ]; then
+	. "./user.local"
+else
+	echo "JAVA=${JAVA}" > user.local
+	echo "MCUSER=${MCUSER}" >> user.local
+	echo "JARGS='${JARGS}'" >> user.local
+fi
+
+if [ -f "profiles.local/${INAME}" ]; then
+	. "profiles.local/${INAME}"
+elif [ -f "profiles/${INAME}" ]; then
+	. "profiles/${INAME}"
+else
+	echo "ERROR: Specified profile does not exist."
+	exit 1
+fi
+
+if [ ! -f "manifests/${VERSION}.json" ]; then
+	echo "Invalid version detected. Either it is mistyped, or you have not downloaded it yet."
+	exit 1
+fi
+
+MINECRAFT_JAR=${MINECRAFT_JAR:=libraries/com/mojang/minecraft/${VERSION}/minecraft-${VERSION}-client.jar}
+
+VERSION_MANIFEST=$(cat "manifests/${VERSION}.json")
+
+# Some libraries included in the manifests are known to cause issues, so we blacklist them here
+# 1.12 and earlier, natives and regular libraries are contained in different elements. For 1.13 and later, an element may contain both.
+CLASSPATH=
+for I in $(echo "${VERSION_MANIFEST}" | jq -c .libraries.[]); do
+	if [[ $(echo "${I}" | jq .downloads.artifact) != 'null' ]]; then
+		for J in ${BLACKLISTED_LIBRARIES}; do
+			if [ ${J} == $(basename $(echo ${I} | jq -r .downloads.artifact.path)) ]; then
+				SKIP=1
+			fi
+		done
+		if [[ ${SKIP} -eq 1 ]]; then
+			SKIP=
+			continue
+		fi
+		JAR=$(echo ${I} | jq -r .downloads.artifact.path)
+		if [ "${JAR}" != 'null' ]; then
+			CLASSPATH="${PWD}/libraries/${JAR}:${CLASSPATH}"
+		fi
+	fi
+	if [[ $(echo "${I}" | jq .natives) != 'null' ]]; then
+		for J in ${BLACKLISTED_NATIVES}; do
+			if [ ${J} == $(basename $(echo ${I} | jq ".downloads.classifiers.\"natives-${PLATFORM}\".path")) ]; then
+				SKIP=1
+			fi
+		done
+		if [[ ${SKIP} -eq 1 ]]; then
+			SKIP=
+			continue
+		fi
+		JAR=$(echo ${I} | jq -r ".downloads.classifiers.\"natives-${PLATFORM}\".path")
+		if [ "${JAR}" != 'null' ]; then
+			CLASSPATH="${PWD}/libraries/${JAR}:${CLASSPATH}"
+		fi
+	fi
+done
+
+for I in ${ADDITIONAL_LIBRARIES}; do
+	CLASSPATH="${CLASSPATH}:${PWD}/${I}"
+done
+
+CLASSPATH="${CLASSPATH}:${PWD}/${MINECRAFT_JAR}"
+
+if [[ $(echo "${VERSION_MANIFEST}" | jq -r .minecraftArguments) != 'null' ]]; then
+	ARGUMENT_LIST=$(echo ${VERSION_MANIFEST} | jq -r .minecraftArguments)
+else
+	for I in $(echo ${VERSION_MANIFEST} | jq -r '.arguments.game[] | select(type=="string")'); do
+		ARGUMENT_LIST="${ARGUMENT_LIST} ${I}"
+	done
+fi
+
+ARGUMENTS="$(echo ${ARGUMENT_LIST} | sed -e "s/\${auth_player_name}/${MCUSER}/" -e "s/\${version_name}/${VERSION}/" -e "s@\${game_directory}@\"${PWD}/instances/${INAME}\"@" -e "s@\${assets_root}@${PWD}/assets@" -e "s/\${assets_index_name}/$(echo ${VERSION_MANIFEST} | jq -r .assetIndex.id)/" -e 's/${auth_uuid}/00000000-0000-0000-0000-000000000000/' -e 's/${auth_access_token}/0/' -e 's/${user_type}/mojang/' -e "s/\${version_type}/$(echo ${VERSION_MANIFEST} | jq -r .type)/" -e 's/${user_properties}/{}/' -e "s@\${game_assets}@${PWD}/assets/virtual/legacy@" -e 's/${auth_session}/0/')"
+
+MAINCLASS=${MAINCLASS:=$(echo ${VERSION_MANIFEST} | jq -r .mainClass)}
+
+INSTANCES="${PWD}/instances"
+if [ -f "playtime/${INAME}" ]; then
+	PRVTOTAL=`cat "playtime/${INAME}"`
+else
+	PRVTOTAL=0
+fi
+STARTTIME=`date +"%s"`
+mkdir -p "${INSTANCES}/${INAME}"
+ORIGDIR="${PWD}"
+cd "${INSTANCES}/${INAME}"
+trap 'echo "Interrupt received"' INT
+
+echo ${ARGUMENTS} ${XARGS} | xargs "${JAVA}" ${JARGS} -Duser.language=en -Djava.library.path="${ORIGDIR}/natives-${PLATFORM}" -cp "${CLASSPATH}" "${MAINCLASS}"
+
+ENDTIME=`date +"%s"`
+cd "${ORIGDIR}"
+
+TOTALSECONDS=`echo ${ENDTIME} - ${STARTTIME} + ${PRVTOTAL} | nickle`
+if [ ! -z ${TOTALSECONDS} ]; then # Prevent playtime from being cleared if nickle is broken/missing
+	mkdir -p playtime
+	echo ${TOTALSECONDS} > "playtime/${INAME}"
+	echo Total playtime: ${ENDTIME} - ${STARTTIME} + ${PRVTOTAL} = ${TOTALSECONDS}
+fi