1.21.8 data

bot/basic/info.go

@@ -0,0 +1,100 @@
+package basic
+
+import (
+	"unsafe"
+
+	"github.com/Tnze/go-mc/data/packetid"
+	pk "github.com/Tnze/go-mc/net/packet"
+)
+
+// WorldInfo content player info in server.
+type WorldInfo struct {
+	DimensionType       int32
+	DimensionNames      []string // Identifiers for all worlds on the server.
+	DimensionName       string   // Name of the world being spawned into.
+	HashedSeed          int64    // First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
+	MaxPlayers          int32    // Was once used by the client to draw the player list, but now is ignored.
+	ViewDistance        int32    // Render distance (2-32).
+	SimulationDistance  int32    // The distance that the client will process specific things, such as entities.
+	ReducedDebugInfo    bool     // If true, a vanilla client shows reduced information on the debug screen. For servers in development, this should almost always be false.
+	EnableRespawnScreen bool     // Set to false when the doImmediateRespawn gamerule is true.
+	IsDebug             bool     // True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
+	IsFlat              bool     // True if the world is a superflat world; flat worlds have different void fog and a horizon at y=0 instead of y=63.
+	DoLimitCrafting     bool     // Whether players can only craft recipes they have already unlocked. Currently unused by the client.
+}
+
+type PlayerInfo struct {
+	EID          int32 // The player's Entity ID (EID).
+	Hardcore     bool  // Is hardcore
+	Gamemode     byte  // Gamemode. 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
+	PrevGamemode int8  // Previous Gamemode
+}
+
+func (p *Player) handleLoginPacket(packet pk.Packet) error {
+	err := packet.Scan(
+		(*pk.Int)(&p.EID),
+		(*pk.Boolean)(&p.Hardcore),
+		pk.Array((*[]pk.Identifier)(unsafe.Pointer(&p.DimensionNames))),
+		(*pk.VarInt)(&p.MaxPlayers),
+		(*pk.VarInt)(&p.ViewDistance),
+		(*pk.VarInt)(&p.SimulationDistance),
+		(*pk.Boolean)(&p.ReducedDebugInfo),
+		(*pk.Boolean)(&p.EnableRespawnScreen),
+		(*pk.Boolean)(&p.DoLimitCrafting),
+		(*pk.VarInt)(&p.WorldInfo.DimensionType),
+		(*pk.Identifier)(&p.DimensionName),
+		(*pk.Long)(&p.HashedSeed),
+		(*pk.UnsignedByte)(&p.Gamemode),
+		(*pk.Byte)(&p.PrevGamemode),
+		(*pk.Boolean)(&p.IsDebug),
+		(*pk.Boolean)(&p.IsFlat),
+		// Death dimension & Death location & Portal cooldown are ignored
+	)
+	if err != nil {
+		return Error{err}
+	}
+	err = p.c.Conn.WritePacket(pk.Marshal( // PluginMessage packet
+		packetid.ServerboundCustomPayload,
+		pk.Identifier("minecraft:brand"),
+		pk.String(p.Settings.Brand),
+	))
+	if err != nil {
+		return Error{err}
+	}
+
+	err = p.c.Conn.WritePacket(pk.Marshal(
+		packetid.ServerboundClientInformation, // Client settings
+		pk.String(p.Settings.Locale),
+		pk.Byte(p.Settings.ViewDistance),
+		pk.VarInt(p.Settings.ChatMode),
+		pk.Boolean(p.Settings.ChatColors),
+		pk.UnsignedByte(p.Settings.DisplayedSkinParts),
+		pk.VarInt(p.Settings.MainHand),
+		pk.Boolean(p.Settings.EnableTextFiltering),
+		pk.Boolean(p.Settings.AllowListing),
+	))
+	if err != nil {
+		return Error{err}
+	}
+
+	p.resetKeepAliveDeadline()
+	return nil
+}
+
+func (p *Player) handleRespawnPacket(packet pk.Packet) error {
+	var copyMeta bool
+	err := packet.Scan(
+		(*pk.VarInt)(&p.DimensionType),
+		(*pk.Identifier)(&p.DimensionName),
+		(*pk.Long)(&p.HashedSeed),
+		(*pk.UnsignedByte)(&p.Gamemode),
+		(*pk.Byte)(&p.PrevGamemode),
+		(*pk.Boolean)(&p.IsDebug),
+		(*pk.Boolean)(&p.IsFlat),
+		(*pk.Boolean)(&copyMeta),
+	)
+	if err != nil {
+		return Error{err}
+	}
+	return nil
+}