Minecraft Custom Startup

minecraft.sh

DEFAULT_ARGUMENT="-Dterminal.jline=false \
-Dterminal.ansi=true \
-XX:+UseG1GC \
-XX:+ParallelRefProcEnabled \
-XX:MaxGCPauseMillis=200 \
-XX:+UnlockExperimentalVMOptions \
-XX:+DisableExplicitGC \
-XX:G1NewSizePercent=30 \
-XX:G1MaxNewSizePercent=40 \
-XX:G1HeapRegionSize=8M \
-XX:G1ReservePercent=20 \
-XX:G1HeapWastePercent=5 \
-XX:G1MixedGCCountTarget=4 \
-XX:InitiatingHeapOccupancyPercent=15 \
-XX:G1MixedGCLiveThresholdPercent=90 \
-XX:G1RSetUpdatingPauseTimePercent=5 \
-XX:SurvivorRatio=32 \
-XX:+PerfDisableSharedMem \
-XX:MaxTenuringThreshold=1 \
-Dusing.aikars.flags=https://mcflags.emc.gs \
-Daikars.new.flags=true"

STARTUP="java \
-Xms256M \
-XX:MaxRAMPercentage=${MAX_MEMORY} \
${DEFAULT_ARGUMENT} \
-jar {{SERVER_JARFILE}}"

if [[ ${CUSTOM_STARTUP_ENABLE} == "1" ]] && [[ -n "${CUSTOM_STARTUP}" ]]; then
    if [[ ${CUSTOM_MEMORY_ENABLE} == "1" ]] && [[ -n "${CUSTOM_MEMORY}" ]]; then
        STARTUP="java \
        -Xms256M \
        -XX:MaxRAMPercentage=${MAX_MEMORY} \
        ${CUSTOM_STARTUP} \
        -jar {{SERVER_JARFILE}}"
    else
        STARTUP="java \
        ${CUSTOM_MEMORY} \
        -jar {{SERVER_JARFILE}}"
    fi
else
    if [[ ${CUSTOM_MEMORY_ENABLE} == "1" ]] && [[ -n "${CUSTOM_MEMORY}" ]]; then
        STARTUP="java \
        ${CUSTOM_MEMORY} \
        ${DEFAULT_ARGUMENT} \
        -jar {{SERVER_JARFILE}}"
    fi
fi

clear && echo "${STARTUP}" && ${STARTUP}