start.sh

#!/bin/bash

# Handle cleanup on script exit
cleanup() {
    echo "Shutting down servers..."
    if [ ! -z "$MC_PID" ]; then
        kill $MC_PID 2>/dev/null || true
    fi
    if [ ! -z "$BUNGEE_PID" ]; then
        kill $BUNGEE_PID 2>/dev/null || true
    fi
    exit 0
}

trap cleanup SIGTERM SIGINT

# Create necessary directories
mkdir -p /app/server /app/bungee /app/logs

# Pre-create world directories to speed up initialization
mkdir -p /app/server/world
mkdir -p /app/server/world/region
mkdir -p /app/server/world/data
mkdir -p /app/server/world_nether
mkdir -p /app/server/world_nether/DIM-1
mkdir -p /app/server/world_the_end
mkdir -p /app/server/world_the_end/DIM1

# Download server jar if not present
if [ ! -f /app/server/server.jar ]; then
    echo "Downloading server.jar..."
    curl -o /app/server/server.jar https://cdn.getbukkit.org/spigot/spigot-1.8.8-R0.1-SNAPSHOT-latest.jar
fi

if [ ! -f /app/bungee/bungee.jar ]; then
    echo "Downloading bungee.jar..."
    curl -o /app/bungee/bungee.jar https://ci.md-5.net/job/BungeeCord/lastSuccessfulBuild/artifact/bootstrap/target/BungeeCord.jar
fi

# Ensure EULA is accepted
cd /app/server
echo "eula=true" > eula.txt

# Start BungeeCord first with reduced memory
cd /app/bungee
echo "Starting BungeeCord..."
java -Xmx150M -Xms150M -XX:+UseG1GC -XX:G1HeapRegionSize=4M \
    -XX:+UnlockExperimentalVMOptions -XX:+ParallelRefProcEnabled \
    -XX:+AlwaysPreTouch -XX:+DisableExplicitGC \
    -XX:MaxGCPauseMillis=100 -jar bungee.jar &

BUNGEE_PID=$!

# Wait for BungeeCord to start
echo "Waiting for BungeeCord to initialize..."
sleep 10

# Verify BungeeCord is running
if ! kill -0 $BUNGEE_PID 2>/dev/null; then
    echo "Error: BungeeCord failed to start"
    exit 1
fi

echo "BungeeCord started successfully"

# Start Minecraft server with optimized memory settings
cd /app/server
echo "Starting Minecraft server..."
echo "Initializing world generation..."

# Use more aggressive GC settings and pre-touch memory
java -Xmx300M -Xms300M -XX:+UseG1GC \
    -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=100 \
    -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC \
    -XX:+AlwaysPreTouch -XX:G1NewSizePercent=40 \
    -XX:G1MaxNewSizePercent=50 -XX:G1HeapRegionSize=8M \
    -XX:G1ReservePercent=15 -XX:G1HeapWastePercent=5 \
    -XX:G1MixedGCCountTarget=4 \
    -XX:InitiatingHeapOccupancyPercent=20 \
    -XX:G1MixedGCLiveThresholdPercent=90 \
    -XX:G1RSetUpdatingPauseTimePercent=5 \
    -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem \
    -XX:MaxTenuringThreshold=1 -XX:+UseNUMA \
    -XX:+AggressiveOpts \
    -Dcom.mojang.eula.agree=true \
    -Dlog4j2.formatMsgNoLookups=true \
    -Djline.terminal=jline.UnsupportedTerminal \
    -Dfile.encoding=UTF-8 \
    -jar server.jar nogui &

MC_PID=$!

# Wait for world generation
echo "Waiting for world generation to complete..."
sleep 30

# Verify Minecraft server is running
if ! kill -0 $MC_PID 2>/dev/null; then
    echo "Error: Minecraft server failed to start"
    cleanup
    exit 1
fi

echo "Minecraft server started successfully"
echo "Both servers are now running"

# Wait for both processes
wait $BUNGEE_PID $MC_PID