143 lines
3.8 KiB
Go
143 lines
3.8 KiB
Go
package main
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import (
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_ "embed"
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"image"
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_ "image/png"
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"log"
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"os"
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"github.com/Tnze/go-mc/chat"
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"github.com/Tnze/go-mc/data/packetid"
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"github.com/Tnze/go-mc/nbt"
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"github.com/Tnze/go-mc/net"
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pk "github.com/Tnze/go-mc/net/packet"
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"github.com/Tnze/go-mc/server"
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"github.com/google/uuid"
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)
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type MyServer struct {
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playerList *server.PlayerList
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}
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const MaxPlayer = 20
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const IconPath = "./server-icon.png"
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var motd = chat.Message{Text: "A Minecraft Server ", Extra: []chat.Message{{Text: "Powered by go-mc", Color: "yellow"}}}
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func main() {
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playerList := server.NewPlayerList(MaxPlayer)
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serverInfo, err := server.NewPingInfo(playerList, server.ProtocolName, server.ProtocolVersion, motd, readIcon())
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if err != nil {
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log.Fatalf("Set server info error: %v", err)
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}
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ms := MyServer{
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playerList: playerList,
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}
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s := server.Server{
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ListPingHandler: serverInfo,
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LoginHandler: &server.MojangLoginHandler{
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OnlineMode: true,
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Threshold: 256,
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},
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GamePlay: &ms,
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}
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if err := s.Listen(":25565"); err != nil {
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log.Fatalf("Listen error: %v", err)
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}
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}
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func (m *MyServer) AcceptPlayer(name string, id uuid.UUID, protocol int32, conn *net.Conn) {
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// Add player into PlayerList
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remove := m.playerList.TryInsert(server.PlayerSample{
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Name: name,
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ID: id,
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})
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if remove == nil {
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err := conn.WritePacket(pk.Marshal(packetid.ClientboundDisconnect,
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chat.TranslateMsg("multiplayer.disconnect.server_full"),
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))
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if err != nil {
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log.Printf("Write packet fail: %v", err)
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}
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return
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}
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defer remove()
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if err := m.joinGame(conn); err != nil {
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log.Printf("Write packet fail: %v", err)
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return
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}
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if err := m.playerPositionAndLook(conn); err != nil {
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log.Printf("Write packet fail: %v", err)
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return
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}
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var p pk.Packet
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for {
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err := conn.ReadPacket(&p)
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if err != nil {
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log.Printf("Read packet fail: %v", err)
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break
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}
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log.Printf("Read packet: %#X", p.ID)
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}
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}
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func readIcon() image.Image {
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f, err := os.Open(IconPath)
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// if the file doesn't exist, return nil
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if os.IsNotExist(err) {
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return nil
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} else if err != nil {
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log.Fatalf("Open icon file error: %v", err)
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}
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defer f.Close()
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icon, _, err := image.Decode(f)
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if err != nil {
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log.Fatalf("Decode image error: %v", err)
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}
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return icon
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}
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//go:embed DimensionCodec.snbt
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var dimensionCodecSNBT string
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//go:embed Dimension.snbt
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var dimensionSNBT string
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func (m *MyServer) joinGame(conn *net.Conn) error {
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return conn.WritePacket(pk.Marshal(packetid.ClientboundLogin,
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pk.Int(0), // EntityID
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pk.Boolean(false), // Is hardcore
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pk.UnsignedByte(1), // Gamemode
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pk.Byte(1), // Previous Gamemode
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pk.VarInt(1), // World Count
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pk.Ary{Len: 1, Ary: []pk.Identifier{"world"}}, // World Names
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pk.NBT(nbt.StringifiedMessage(dimensionCodecSNBT)), // Dimension codec
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pk.NBT(nbt.StringifiedMessage(dimensionSNBT)), // Dimension
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pk.Identifier("world"), // World Name
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pk.Long(0), // Hashed Seed
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pk.VarInt(MaxPlayer), // Max Players
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pk.VarInt(15), // View Distance
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pk.VarInt(15), // Simulation Distance
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pk.Boolean(false), // Reduced Debug Info
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pk.Boolean(true), // Enable respawn screen
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pk.Boolean(false), // Is Debug
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pk.Boolean(true), // Is Flat
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))
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}
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func (m *MyServer) playerPositionAndLook(conn *net.Conn) error {
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return conn.WritePacket(pk.Marshal(packetid.ClientboundPlayerPosition,
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pk.Double(0), pk.Double(0), pk.Double(0), // XYZ
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pk.Float(0), pk.Float(0), // Yaw Pitch
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pk.Byte(0), // flag
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pk.VarInt(0), // TP ID
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pk.Boolean(false), // Dismount vehicle
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))
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}
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