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root.go
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root.go
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package cmd
import (
"fmt"
"github.com/go-logr/zapr"
"github.com/r4g3baby/mcserver/internal/config"
"github.com/r4g3baby/mcserver/pkg/log"
"github.com/r4g3baby/mcserver/pkg/protocol/packets"
"github.com/r4g3baby/mcserver/pkg/server"
"github.com/r4g3baby/mcserver/pkg/util/chat"
"github.com/spf13/cobra"
"github.com/spf13/viper"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"gopkg.in/natefinch/lumberjack.v2"
"os"
"os/signal"
"syscall"
)
var (
// set at build time
Version = "1.0.0-dev"
)
var rootCmd = &cobra.Command{
Use: "mcserver",
Short: "A lightweight and performant minecraft server made in Go",
Version: Version,
Run: func(cmd *cobra.Command, args []string) {
var config = setupConfig()
setupLogger(config)
serv := server.NewServer(config.Server)
if err := serv.Start(); err != nil {
log.Log.Error(err, "failed to start server")
os.Exit(1)
}
world := serv.GetWorld()
world.SetBlock(0, 65, 0, "minecraft:torch")
world.SetBlock(0, 64, 0, "minecraft:dirt")
world.SetBlock(1, 64, 0, "minecraft:stone")
world.SetBlock(1, 64, 1, "minecraft:stone")
world.SetBlock(0, 64, 1, "minecraft:stone")
world.SetBlock(-1, 64, 1, "minecraft:stone")
world.SetBlock(-1, 64, 0, "minecraft:stone")
world.SetBlock(-1, 64, -1, "minecraft:stone")
world.SetBlock(0, 64, -1, "minecraft:stone")
world.SetBlock(1, 64, -1, "minecraft:stone")
_ = serv.OnAsync(server.OnPacketReadEvent, func(e server.PacketEvent) {
if chatPacket, ok := e.GetPacket().(*packets.PacketPlayInChatMessage); ok {
serv.ForEachPlayer(func(player server.Player) bool {
_ = player.SendPacket(&packets.PacketPlayOutChatMessage{
Message: []chat.Component{
&chat.TranslatableComponent{
Translate: "chat.type.text",
With: []chat.Component{
&chat.TextComponent{
Text: player.GetUsername(),
BaseComponent: chat.BaseComponent{
ClickEvent: &chat.ClickEvent{
Action: chat.SuggestCommandClickAction,
Value: "/tell " + player.GetUsername(),
},
HoverEvent: &chat.HoverEvent{
Action: chat.ShowEntityHoverAction,
Contents: fmt.Sprintf(
"{id:%s,type:minecraft:player,name:%s}",
player.GetUniqueID(), player.GetUsername(),
),
},
Insertion: player.GetUsername(),
},
},
&chat.TextComponent{
Text: chatPacket.Message,
},
},
},
},
Position: 0,
Sender: player.GetUniqueID(),
})
return true
})
}
})
shutdownSignal := make(chan os.Signal, 1)
signal.Notify(shutdownSignal, syscall.SIGTERM, syscall.SIGINT, syscall.SIGHUP, os.Interrupt)
sig := <-shutdownSignal
log.Log.V(1).Info("received shutdown signal", "signal", sig)
if err := serv.Stop(); err != nil {
log.Log.Error(err, "failed to stop server")
os.Exit(1)
}
},
}
func init() {
rootCmd.Flags().Bool("debug", false, "sets log level to debug")
rootCmd.Flags().String("host", "0.0.0.0", "sets the server host")
rootCmd.Flags().Int("port", 25565, "sets the server port")
_ = viper.BindPFlag("debug", rootCmd.Flags().Lookup("debug"))
_ = viper.BindPFlag("server.host", rootCmd.Flags().Lookup("host"))
_ = viper.BindPFlag("server.port", rootCmd.Flags().Lookup("port"))
}
func setupConfig() config.Config {
if err := viper.ReadInConfig(); err != nil {
if _, ok := err.(viper.ConfigFileNotFoundError); ok {
if err := config.WriteDefaultConfig(); err != nil {
_, _ = fmt.Fprintln(os.Stderr, "error:", err)
os.Exit(1)
}
return setupConfig()
} else {
_, _ = fmt.Fprintln(os.Stderr, "error:", err)
os.Exit(1)
}
}
var conf config.Config
if err := viper.Unmarshal(&conf); err != nil {
_, _ = fmt.Fprintln(os.Stderr, "error:", err)
os.Exit(1)
}
return conf
}
func setupLogger(config config.Config) {
var zapConfig = zap.NewProductionEncoderConfig()
var level = zap.InfoLevel
if config.Debug {
level = zap.DebugLevel
}
zapConfig.ConsoleSeparator = "\u0020"
zapConfig.EncodeTime = zapcore.TimeEncoderOfLayout("02 Jan 15:04")
zapConfig.EncodeLevel = zapcore.CapitalColorLevelEncoder
consoleEncoder := zapcore.NewConsoleEncoder(zapConfig)
var core zapcore.Core
if config.Logger.Enabled {
zapConfig.EncodeTime = zapcore.EpochNanosTimeEncoder
zapConfig.EncodeLevel = zapcore.LowercaseLevelEncoder
fileEncoder := zapcore.NewJSONEncoder(zapConfig)
core = zapcore.NewTee(
zapcore.NewCore(fileEncoder, zapcore.AddSync(&lumberjack.Logger{
Filename: config.Logger.Filename,
MaxSize: config.Logger.MaxSize,
MaxAge: config.Logger.MaxAge,
MaxBackups: config.Logger.MaxBackups,
LocalTime: config.Logger.LocalTime,
Compress: config.Logger.Compress,
}), level),
zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stderr), level),
)
} else {
core = zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stderr), level)
}
log.SetLogger(zapr.NewLogger(zap.New(core, zap.WithCaller(false))))
}
func Execute() {
if err := rootCmd.Execute(); err != nil {
os.Exit(1)
}
}