233 lines
8.3 KiB
Go
233 lines
8.3 KiB
Go
package basic
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import (
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"golang.org/x/exp/slices"
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"unsafe"
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"github.com/Tnze/go-mc/data/packetid"
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pk "github.com/Tnze/go-mc/net/packet"
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)
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// WorldInfo content player info in server.
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type WorldInfo struct {
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DimensionCodec DimensionCodec
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Dimension Dimension
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WorldNames []string // Identifiers for all worlds on the server.
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WorldName string // Name of the world being spawned into.
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HashedSeed int64 // First 8 bytes of the SHA-256 hash of the world's seed. Used client side for biome noise
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MaxPlayers int32 // Was once used by the client to draw the player list, but now is ignored.
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ViewDistance int32 // Render distance (2-32).
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SimulationDistance int32 // The distance that the client will process specific things, such as entities.
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ReducedDebugInfo bool // If true, a Notchian client shows reduced information on the debug screen. For servers in development, this should almost always be false.
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EnableRespawnScreen bool // Set to false when the doImmediateRespawn gamerule is true.
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IsDebug bool // True if the world is a debug mode world; debug mode worlds cannot be modified and have predefined blocks.
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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.
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}
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type Dimension struct {
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Name string `nbt:"name"`
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Id int `nbt:"id"`
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Element struct {
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PiglinSafe byte `nbt:"piglin_safe"`
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Natural byte `nbt:"natural"`
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AmbientLight float64 `nbt:"ambient_light"`
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MonsterSpawnBlockLightLimit int `nbt:"monster_spawn_block_light_limit"`
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Infiniburn string `nbt:"infiniburn"`
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RespawnAnchorWorks byte `nbt:"respawn_anchor_works"`
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HasSkylight byte `nbt:"has_skylight"`
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BedWorks byte `nbt:"bed_works"`
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Effects string `nbt:"effects"`
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HasRaids byte `nbt:"has_raids"`
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Shrunk byte `nbt:"shrunk"`
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LogicalHeight int `nbt:"logical_height"`
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CoordinateScale float64 `nbt:"coordinate_scale"`
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MinY int `nbt:"min_y"`
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MonsterSpawnLightLevel int `nbt:"monster_spawn_light_level"`
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Ultrawarm byte `nbt:"ultrawarm"`
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HasCeiling byte `nbt:"has_ceiling"`
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Height int `nbt:"height"`
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FixedTime int64 `nbt:"fixed_time,omitempty"`
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} `nbt:"element"`
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}
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type DimensionCodec struct {
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// What is Below (wik.vg)
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ChatType struct {
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Type string `nbt:"type"`
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Value []struct {
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Name string `nbt:"name"`
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Id int `nbt:"id"`
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Element struct {
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Chat struct {
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Decoration struct {
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TranslationKey interface{} `nbt:"translation_key"`
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Style struct {
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Color interface{} `nbt:"color,omitempty"`
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Italic interface{} `nbt:"italic,omitempty"`
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} `nbt:"style"`
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Parameters []interface{} `nbt:"parameters"`
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} `nbt:"decoration,omitempty"`
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} `nbt:"chat,omitempty"`
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Narration struct {
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Priority interface{} `nbt:"priority"`
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Decoration struct {
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TranslationKey interface{} `nbt:"translation_key"`
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Style struct {
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} `nbt:"style"`
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Parameters []interface{} `nbt:"parameters"`
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} `nbt:"decoration,omitempty"`
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} `nbt:"narration,omitempty"`
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Overlay struct {
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} `nbt:"overlay,omitempty"`
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} `nbt:"element"`
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} `nbt:"value"`
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} `nbt:"minecraft:chat_type"`
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DimensionType struct {
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Type string `nbt:"type"`
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Value []Dimension `nbt:"value"`
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} `nbt:"minecraft:dimension_type"`
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WorldGenBiome struct {
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Type string `nbt:"type"`
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Value []struct {
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Name string `nbt:"name"`
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Id int `nbt:"id"`
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Element struct {
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Precipitation interface{} `nbt:"precipitation"`
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Effects struct {
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SkyColor int `nbt:"sky_color"`
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WaterFogColor int `nbt:"water_fog_color"`
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FogColor int `nbt:"fog_color"`
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WaterColor int `nbt:"water_color"`
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MoodSound struct {
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TickDelay int `nbt:"tick_delay"`
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Offset interface{} `nbt:"offset"`
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Sound string `nbt:"sound"`
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BlockSearchExtent int `nbt:"block_search_extent"`
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} `nbt:"mood_sound"`
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GrassColorModifier interface{} `nbt:"grass_color_modifier,omitempty"`
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Music struct {
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ReplaceCurrentMusic interface{} `nbt:"replace_current_music"`
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MaxDelay int `nbt:"max_delay"`
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Sound string `nbt:"sound"`
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MinDelay int `nbt:"min_delay"`
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} `nbt:"music,omitempty"`
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FoliageColor int `nbt:"foliage_color,omitempty"`
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GrassColor int `nbt:"grass_color,omitempty"`
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AmbientSound string `nbt:"ambient_sound,omitempty"`
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AdditionsSound struct {
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Sound string `nbt:"sound"`
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TickChance interface{} `nbt:"tick_chance"`
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} `nbt:"additions_sound,omitempty"`
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Particle struct {
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Probability interface{} `nbt:"probability"`
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Options struct {
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Type string `nbt:"type"`
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} `nbt:"options"`
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} `nbt:"particle,omitempty"`
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} `nbt:"effects"`
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Temperature interface{} `nbt:"temperature"`
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Downfall interface{} `nbt:"downfall"`
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TemperatureModifier interface{} `nbt:"temperature_modifier,omitempty"`
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} `nbt:"element"`
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} `nbt:"value"`
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} `nbt:"minecraft:worldgen/biome"`
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}
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type PlayerInfo struct {
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EID int32 // The player's Entity ID (EID).
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Hardcore bool // Is hardcore
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Gamemode byte // Gamemode. 0: Survival, 1: Creative, 2: Adventure, 3: Spectator.
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PrevGamemode int8 // Previous Gamemode
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}
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// ServInfo contains information about the server implementation.
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type ServInfo struct {
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Brand string
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}
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func (p *Player) handleLoginPacket(packet pk.Packet) error {
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var WorldNames = make([]pk.Identifier, 0)
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var currentDimension pk.Identifier
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err := packet.Scan(
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(*pk.Int)(&p.EID),
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(*pk.Boolean)(&p.Hardcore),
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(*pk.UnsignedByte)(&p.Gamemode),
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(*pk.Byte)(&p.PrevGamemode),
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pk.Array(&WorldNames),
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pk.NBT(&p.WorldInfo.DimensionCodec),
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¤tDimension,
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(*pk.Identifier)(&p.WorldName),
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(*pk.Long)(&p.HashedSeed),
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(*pk.VarInt)(&p.MaxPlayers),
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(*pk.VarInt)(&p.ViewDistance),
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(*pk.VarInt)(&p.SimulationDistance),
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(*pk.Boolean)(&p.ReducedDebugInfo),
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(*pk.Boolean)(&p.EnableRespawnScreen),
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(*pk.Boolean)(&p.IsDebug),
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(*pk.Boolean)(&p.IsFlat),
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)
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if err != nil {
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return Error{err}
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}
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// This line should work "like" the following code but without copy things
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// p.WorldNames = make([]string, len(WorldNames))
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// for i, v := range WorldNames {
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// p.WorldNames[i] = string(v)
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// }
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p.WorldNames = *(*[]string)(unsafe.Pointer(&WorldNames))
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index := slices.IndexFunc(p.DimensionCodec.DimensionType.Value, func(d Dimension) bool {
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return d.Name == string(currentDimension)
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})
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if index != -1 {
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p.Dimension = p.DimensionCodec.DimensionType.Value[index]
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}
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err = p.c.Conn.WritePacket(pk.Marshal( //PluginMessage packet
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packetid.ServerboundCustomPayload,
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pk.Identifier("minecraft:brand"),
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pk.String(p.Settings.Brand),
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))
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if err != nil {
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return Error{err}
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}
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err = p.c.Conn.WritePacket(pk.Marshal(
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packetid.ServerboundClientInformation, // Client settings
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pk.String(p.Settings.Locale),
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pk.Byte(p.Settings.ViewDistance),
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pk.VarInt(p.Settings.ChatMode),
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pk.Boolean(p.Settings.ChatColors),
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pk.UnsignedByte(p.Settings.DisplayedSkinParts),
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pk.VarInt(p.Settings.MainHand),
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pk.Boolean(p.Settings.EnableTextFiltering),
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pk.Boolean(p.Settings.AllowListing),
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))
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if err != nil {
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return Error{err}
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}
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return nil
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}
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func (p *Player) handleRespawnPacket(packet pk.Packet) error {
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var copyMeta bool
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var currentDimension pk.Identifier
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err := packet.Scan(
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//pk.NBT(&p.WorldInfo.Dimension),
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¤tDimension,
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(*pk.Identifier)(&p.WorldName),
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(*pk.Long)(&p.HashedSeed),
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(*pk.UnsignedByte)(&p.Gamemode),
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(*pk.Byte)(&p.PrevGamemode),
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(*pk.Boolean)(&p.IsDebug),
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(*pk.Boolean)(&p.IsFlat),
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(*pk.Boolean)(©Meta),
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)
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if err != nil {
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return Error{err}
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}
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index := slices.IndexFunc(p.DimensionCodec.DimensionType.Value, func(d Dimension) bool {
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return d.Name == string(currentDimension)
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})
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if index != -1 {
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p.Dimension = p.DimensionCodec.DimensionType.Value[index]
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}
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return nil
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}
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