session

package
v0.5.16 Latest Latest
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 Go to latest Published: Feb 23, 2022 License: MIT Imports: 47 Imported by: 0

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Index

Constants

This section is empty.

Variables

View Source 
var ErrSelfRuntimeID = errors.New("invalid entity runtime ID: runtime ID for self must always be 1")

ErrSelfRuntimeID is an error returned during packet handling for fields that refer to the player itself and must therefore always be 1.

View Source 
var Nop = &Session{}

Nop represents a no-operation session. It does not do anything when sending a packet to it.

Functions

This section is empty.

Types

type AdventureSettingsHandler 

type AdventureSettingsHandler struct{}

AdventureSettingsHandler handles the AdventureSettings packet.

func (AdventureSettingsHandler) Handle 

func (a AdventureSettingsHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type BlockActorDataHandler 

type BlockActorDataHandler struct{}

BlockActorDataHandler handles an incoming BlockActorData packet from the client, sent for some block entities like signs when they are edited.

func (BlockActorDataHandler) Handle 

func (b BlockActorDataHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type BlockPickRequestHandler 

type BlockPickRequestHandler struct{}

BlockPickRequestHandler handles the BlockPickRequest packet.

func (BlockPickRequestHandler) Handle 

func (b BlockPickRequestHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type ClientCacheBlobStatusHandler 

type ClientCacheBlobStatusHandler struct {
}

ClientCacheBlobStatusHandler handles the ClientCacheBlobStatus packet.

func (*ClientCacheBlobStatusHandler) Handle 

func (c *ClientCacheBlobStatusHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type CommandRequestHandler 

type CommandRequestHandler struct {
	// contains filtered or unexported fields
}

CommandRequestHandler handles the CommandRequest packet.

func (*CommandRequestHandler) Handle 

func (h *CommandRequestHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type Conn 

type Conn interface {
	io.Closer
	// IdentityData returns the login.IdentityData of a Conn. It contains the UUID, XUID and username of the connection.
	IdentityData() login.IdentityData
	// ClientData returns the login.ClientData of a Conn. This includes less sensitive data of the player like its skin,
	// language code and other non-essential information.
	ClientData() login.ClientData
	// ClientCacheEnabled specifies if the Conn has the client cache, used for caching chunks client-side, enabled or
	// not. Some platforms, like the Nintendo Switch, have this disabled at all times.
	ClientCacheEnabled() bool
	// ChunkRadius returns the chunk radius as requested by the client at the other end of the Conn.
	ChunkRadius() int
	// Latency returns the current latency measured over the Conn.
	Latency() time.Duration
	// Flush flushes the packets buffered by the Conn, sending all of them out immediately.
	Flush() error
	// RemoteAddr returns the remote network address.
	RemoteAddr() net.Addr
	// ReadPacket reads a packet.Packet from the Conn. An error is returned if a deadline was set that was
	// exceeded or if the Conn was closed while awaiting a packet.
	ReadPacket() (pk packet.Packet, err error)
	// WritePacket writes a packet.Packet to the Conn. An error is returned if the Conn was closed before sending the
	// packet.
	WritePacket(pk packet.Packet) error
	// StartGameContext starts the game for the Conn with a context to cancel it.
	StartGameContext(ctx context.Context, data minecraft.GameData) error
}

Conn represents a connection that packets are read from and written to by a Session. In addition, it holds some information on the identity of the Session.

type ContainerCloseHandler 

type ContainerCloseHandler struct{}

ContainerCloseHandler handles the ContainerClose packet.

func (*ContainerCloseHandler) Handle 

func (h *ContainerCloseHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type Controllable 

type Controllable interface {
	world.Entity
	item.Carrier
	form.Submitter
	cmd.Source
	chat.Subscriber
	SetHeldItems(right, left item.Stack)

	Move(deltaPos mgl64.Vec3, deltaYaw, deltaPitch float64)
	Speed() float64
	Facing() cube.Direction

	Chat(msg ...interface{})
	ExecuteCommand(commandLine string)
	GameMode() world.GameMode
	SetGameMode(mode world.GameMode)
	Effects() []effect.Effect

	UseItem()
	ReleaseItem()
	UseItemOnBlock(pos cube.Pos, face cube.Face, clickPos mgl64.Vec3)
	UseItemOnEntity(e world.Entity)
	BreakBlock(pos cube.Pos)
	PickBlock(pos cube.Pos)
	AttackEntity(e world.Entity)
	Drop(s item.Stack) (n int)
	SwingArm()
	PunchAir()

	Respawn()
	Dead() bool

	StartSneaking()
	Sneaking() bool
	StopSneaking()
	StartSprinting()
	Sprinting() bool
	StopSprinting()
	StartSwimming()
	Swimming() bool
	StopSwimming()
	StartFlying()
	Flying() bool
	StopFlying()
	Jump()

	StartBreaking(pos cube.Pos, face cube.Face)
	ContinueBreaking(face cube.Face)
	FinishBreaking()
	AbortBreaking()

	Exhaust(points float64)

	EditSign(pos cube.Pos, text string) error

	// UUID returns the UUID of the controllable. It must be unique for all controllable entities present in
	// the server.
	UUID() uuid.UUID
	// XUID returns the XBOX Live User ID of the controllable. Every controllable must have one of these if
	// they are authenticated via XBOX Live, as they must be connected to an XBOX Live account.
	XUID() string
	// Skin returns the skin of the controllable. Each controllable must have a skin, as it defines how the
	// entity looks in the world.
	Skin() skin.Skin
	SetSkin(skin.Skin)
}

Controllable represents an entity that may be controlled by a Session. Generally, Controllable is implemented in the form of a Player. Methods in Controllable will be added as Session needs them in order to handle packets.

type EmoteHandler 

type EmoteHandler struct {
	LastEmote time.Time
}

EmoteHandler handles the Emote packet.

func (*EmoteHandler) Handle 

func (h *EmoteHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type InteractHandler 

type InteractHandler struct{}

InteractHandler handles the packet.Interact.

func (*InteractHandler) Handle 

func (h *InteractHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type InventoryTransactionHandler 

type InventoryTransactionHandler struct{}

InventoryTransactionHandler handles the InventoryTransaction packet.

func (*InventoryTransactionHandler) Handle 

func (h *InventoryTransactionHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type ItemStackRequestHandler 

type ItemStackRequestHandler struct {
	// contains filtered or unexported fields
}

ItemStackRequestHandler handles the ItemStackRequest packet. It handles the actions done within the inventory.

func (*ItemStackRequestHandler) Handle 

func (h *ItemStackRequestHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type LevelSoundEventHandler 

type LevelSoundEventHandler struct{}

func (LevelSoundEventHandler) Handle 

func (l LevelSoundEventHandler) Handle(p packet.Packet, s *Session) error

type MobEquipmentHandler 

type MobEquipmentHandler struct{}

MobEquipmentHandler handles the MobEquipment packet.

func (*MobEquipmentHandler) Handle 

func (*MobEquipmentHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type ModalFormResponseHandler 

type ModalFormResponseHandler struct {
	// contains filtered or unexported fields
}

ModalFormResponseHandler handles the ModalFormResponse packet.

func (*ModalFormResponseHandler) Handle 

func (h *ModalFormResponseHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type PlayerActionHandler 

type PlayerActionHandler struct{}

PlayerActionHandler handles the PlayerAction packet.

func (*PlayerActionHandler) Handle 

func (*PlayerActionHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type PlayerAuthInputHandler 

type PlayerAuthInputHandler struct{}

PlayerAuthInputHandler handles the PlayerAuthInput packet.

func (PlayerAuthInputHandler) Handle 

func (h PlayerAuthInputHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type PlayerSkinHandler 

type PlayerSkinHandler struct{}

PlayerSkinHandler handles the PlayerSkin packet.

func (PlayerSkinHandler) Handle 

func (PlayerSkinHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type RequestChunkRadiusHandler 

type RequestChunkRadiusHandler struct{}

RequestChunkRadiusHandler handles the RequestChunkRadius packet.

func (*RequestChunkRadiusHandler) Handle 

func (*RequestChunkRadiusHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type RespawnHandler 

type RespawnHandler struct{}

RespawnHandler handles the Respawn packet.

func (*RespawnHandler) Handle 

func (*RespawnHandler) Handle(p packet.Packet, s *Session) error

Handle ...

type Session 

type Session struct {
	// contains filtered or unexported fields
}

Session handles incoming packets from connections and sends outgoing packets by providing a thin layer of abstraction over direct packets. A Session basically 'controls' an entity.

func New 

func New(conn Conn, maxChunkRadius int, log internal.Logger, joinMessage, quitMessage *atomic.String) *Session

New returns a new session using a controllable entity. The session will control this entity using the packets that it receives. New takes the connection from which to accept packets. It will start handling these packets after a call to Session.Start().

func (*Session) Addr 

func (s *Session) Addr() net.Addr

Addr returns the net.Addr of the client.

func (*Session) ClientData 

func (s *Session) ClientData() login.ClientData

ClientData returns the login.ClientData of the underlying *minecraft.Conn.

func (*Session) Close 

func (s *Session) Close() error

Close closes the session, which in turn closes the controllable and the connection that the session manages. Close ensures the method only runs code on the first call.

func (*Session) CloseConnection 

func (s *Session) CloseConnection()

CloseConnection closes the underlying connection of the session so that the session ends up being closed eventually.

func (*Session) Disconnect 

func (s *Session) Disconnect(message string)

Disconnect disconnects the client and ultimately closes the session. If the message passed is non-empty, it will be shown to the client.

func (*Session) EnableCoordinates 

func (s *Session) EnableCoordinates(enable bool)

EnableCoordinates will either enable or disable coordinates for the player depending on the value given.

func (*Session) EnableInstantRespawn 

func (s *Session) EnableInstantRespawn(enable bool)

EnableInstantRespawn will either enable or disable instant respawn for the player depending on the value given.

func (*Session) HandleInventories 

func (s *Session) HandleInventories() (inv, offHand *inventory.Inventory, armour *inventory.Armour, heldSlot *atomic.Uint32)

HandleInventories starts handling the inventories of the Controllable entity of the session. It sends packets when slots in the inventory are changed.

func (*Session) HideEntity 

func (s *Session) HideEntity(e world.Entity)

HideEntity ...

func (*Session) Latency 

func (s *Session) Latency() time.Duration

Latency returns the latency of the connection.

func (*Session) OpenBlockContainer 

func (s *Session) OpenBlockContainer(pos cube.Pos)

OpenBlockContainer ...

func (*Session) Position 

func (s *Session) Position() mgl64.Vec3

Position ...

func (*Session) RemoveBossBar 

func (s *Session) RemoveBossBar()

RemoveBossBar removes any boss bar currently active on the player's screen.

func (*Session) RemoveScoreboard 

func (s *Session) RemoveScoreboard()

RemoveScoreboard ...

func (*Session) SendAbsorption 

func (s *Session) SendAbsorption(value float64)

SendAbsorption sends the absorption value passed to the player.

func (*Session) SendActionBarMessage 

func (s *Session) SendActionBarMessage(text string)

SendActionBarMessage ...

func (*Session) SendAnnouncement 

func (s *Session) SendAnnouncement(message string)

SendAnnouncement ...

func (*Session) SendBossBar 

func (s *Session) SendBossBar(text string, colour uint8, healthPercentage float64)

SendBossBar sends a boss bar to the player with the text passed and the health percentage of the bar. SendBossBar removes any boss bar that might be active before sending the new one.

func (*Session) SendCommandOutput 

func (s *Session) SendCommandOutput(output *cmd.Output)

SendCommandOutput sends the output of a command to the player. It will be shown to the caller of the command, which might be the player or a websocket server.

func (*Session) SendEffect 

func (s *Session) SendEffect(e effect.Effect)

SendEffect sends an effects passed to the player.

func (*Session) SendEffectRemoval 

func (s *Session) SendEffectRemoval(e effect.Type)

SendEffectRemoval sends the removal of an effect passed.

func (*Session) SendFood 

func (s *Session) SendFood(food int, saturation, exhaustion float64)

SendFood ...

func (*Session) SendForm 

func (s *Session) SendForm(f form.Form)

SendForm sends a form to the client of the connection. The Submit method of the form is called when the client submits the form.

func (*Session) SendGameMode 

func (s *Session) SendGameMode(mode world.GameMode)

SendGameMode sends the game mode of the Controllable entity of the session to the client. It makes sure the right flags are set to create the full game mode.

func (*Session) SendHealth 

func (s *Session) SendHealth(health *entity.HealthManager)

SendHealth sends the health and max health to the player.

func (*Session) SendJukeboxPopup 

func (s *Session) SendJukeboxPopup(message string)

SendJukeboxPopup ...

func (*Session) SendMessage 

func (s *Session) SendMessage(message string)

SendMessage ...

func (*Session) SendPopup 

func (s *Session) SendPopup(message string)

SendPopup ...

func (*Session) SendRespawn 

func (s *Session) SendRespawn(pos mgl64.Vec3)

SendRespawn spawns the Controllable entity of the session client-side in the world, provided it has died.

func (*Session) SendScoreboard 

func (s *Session) SendScoreboard(sb *scoreboard.Scoreboard)

SendScoreboard ...

func (*Session) SendSpeed 

func (s *Session) SendSpeed(speed float64)

SendSpeed sends the speed of the player in an UpdateAttributes packet, so that it is updated client-side.

func (*Session) SendSubtitle 

func (s *Session) SendSubtitle(text string)

SendSubtitle ...

func (*Session) SendTip 

func (s *Session) SendTip(message string)

SendTip ...

func (*Session) SendTitle 

func (s *Session) SendTitle(text string)

SendTitle ...

func (*Session) SetHeldSlot 

func (s *Session) SetHeldSlot(slot int) error

SetHeldSlot sets the currently held hotbar slot.

func (*Session) SetTitleDurations 

func (s *Session) SetTitleDurations(fadeInDuration, remainDuration, fadeOutDuration time.Duration)

SetTitleDurations ...

func (*Session) Start 

func (s *Session) Start(c Controllable, w *world.World, gm world.GameMode, onStop func(controllable Controllable))

Start makes the session start handling incoming packets from the client and initialises the Controllable entity of the session in the world. The function passed will be called when the session stops running.

func (*Session) StartShowingEntity 

func (s *Session) StartShowingEntity(e world.Entity)

StartShowingEntity starts showing a world.Entity to the Session that was previously hidden using StopShowingEntity.

func (*Session) StopShowingEntity 

func (s *Session) StopShowingEntity(e world.Entity)

StopShowingEntity stops showing a world.Entity to the Session. It will be completely invisible until a call to StartShowingEntity is made.

func (*Session) Transfer 

func (s *Session) Transfer(ip net.IP, port int)

Transfer transfers the player to a server with the IP and port passed.

func (*Session) UpdateHeldSlot 

func (s *Session) UpdateHeldSlot(slot int, expected item.Stack) error

UpdateHeldSlot updates the held slot of the Session to the slot passed. It also verifies that the item in that slot matches an expected item stack.

func (*Session) ViewBlockAction 

func (s *Session) ViewBlockAction(pos cube.Pos, a world.BlockAction)

ViewBlockAction ...

func (*Session) ViewBlockUpdate 

func (s *Session) ViewBlockUpdate(pos cube.Pos, b world.Block, layer int)

ViewBlockUpdate ...

func (*Session) ViewChunk 

func (s *Session) ViewChunk(pos world.ChunkPos, c *chunk.Chunk, blockEntities map[cube.Pos]world.Block)

ViewChunk ...

func (*Session) ViewEmote 

func (s *Session) ViewEmote(player world.Entity, emote uuid.UUID)

ViewEmote ...

func (*Session) ViewEntity 

func (s *Session) ViewEntity(e world.Entity)

ViewEntity ...

func (*Session) ViewEntityAction 

func (s *Session) ViewEntityAction(e world.Entity, a world.EntityAction)

ViewEntityAction ...

func (*Session) ViewEntityArmour 

func (s *Session) ViewEntityArmour(e world.Entity)

ViewEntityArmour ...

func (*Session) ViewEntityItems 

func (s *Session) ViewEntityItems(e world.Entity)

ViewEntityItems ...

func (*Session) ViewEntityMovement 

func (s *Session) ViewEntityMovement(e world.Entity, pos mgl64.Vec3, yaw, pitch float64, onGround bool)

ViewEntityMovement ...

func (*Session) ViewEntityState 

func (s *Session) ViewEntityState(e world.Entity)

ViewEntityState ...

func (*Session) ViewEntityTeleport 

func (s *Session) ViewEntityTeleport(e world.Entity, position mgl64.Vec3)

ViewEntityTeleport ...

func (*Session) ViewEntityVelocity 

func (s *Session) ViewEntityVelocity(e world.Entity, velocity mgl64.Vec3)

ViewEntityVelocity ...

func (*Session) ViewParticle 

func (s *Session) ViewParticle(pos mgl64.Vec3, p world.Particle)

ViewParticle ...

func (*Session) ViewSkin 

func (s *Session) ViewSkin(e world.Entity)

ViewSkin ...

func (*Session) ViewSlotChange 

func (s *Session) ViewSlotChange(slot int, newItem item.Stack)

ViewSlotChange ...

func (*Session) ViewSound 

func (s *Session) ViewSound(pos mgl64.Vec3, soundType world.Sound)

ViewSound ...

func (*Session) ViewTime 

func (s *Session) ViewTime(time int)

ViewTime ...

func (*Session) ViewWeather 

func (s *Session) ViewWeather(raining, thunder bool)

ViewWeather ...

func (*Session) ViewWorldSpawn 

func (s *Session) ViewWorldSpawn(pos cube.Pos)

ViewWorldSpawn ...

type TextHandler 

type TextHandler struct{}

TextHandler handles the Text packet.

func (TextHandler) Handle 

func (TextHandler) Handle(p packet.Packet, s *Session) error

Handle ...

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