hakusaro/1.3.5.3.md

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1.3.5.3.md

Connect Request [1]

Client -> Server

Size	Description	Type	Notes
?	Version	String	"Terraria" + Main.curRelease

Disconnect [2]

Server -> Client

Size	Description	Type	Notes
?	Reason	NetworkText	-

Set User Slot [3]

Server -> Client

Size	Description	Type	Notes
1	Player ID	Byte	-

Player Info [4]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Skin Varient	Byte	-
1	Hair	Byte	If >134 then Set To 0
?	Name	String	-
1	Hair Dye	Byte	-
1	Hide Visuals	Byte	-
1	Hide Visuals 2	Byte	-
1	Hide Misc	Byte	-
3	Hair Color	Color	-
3	Skin Color	Color	-
3	Eye Color	Color	-
3	Shirt Color	Color	-
3	Under Shirt Color	Color	-
3	Pants Color	Color	-
3	Shoe Color	Color	-
1	Difficulty	Byte	-

Player Inventory Slot [5]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Slot ID	Byte	0 - 58 = Inventory, 59 - 78 = Armor, 79 - 88 = Dye, 89 - 93 MiscEquips, 94 - 98 = MiscDyes, 99 - 138 = Piggy bank, 139-178 = Safe, 179 = Trash
2	Stack	Int16	-
1	Prefix	Byte	-
2	Item NetID	Int16	-

Request World Data [6]

Client -> Server

Size	Description	Type	Notes

World Info [7]

Server -> Client

Size	Description	Type	Notes
4	Time	Int32	-
1	Day and Moon Info	Byte	BitFlags: 1 = Day Time, 2 = Blood Moon, 4 = Eclipse
1	Moon Phase	Byte	-
2	MaxTilesX	Int16	-
2	MaxTilesY	Int16	-
2	SpawnX	Int16	-
2	SpawnY	Int16	-
2	WorldSurface	Int16	-
2	RockLayer	Int16	-
4	WorldID	Int32	-
?	World Name	String	-
16	World Unique ID	Byte[]	-
8	World Generator Version	UInt64	-
1	Moon Type	Byte	-
1	Tree Background	Byte	-
1	Corruption Background	Byte	-
1	Jungle Background	Byte	-
1	Snow Background	Byte	-
1	Hallow Background	Byte	-
1	Crimson Background	Byte	-
1	Desert Background	Byte	-
1	Ocean Background	Byte	-
1	Ice Back Style	Byte	-
1	Jungle Back Style	Byte	-
1	Hell Back Style	Byte	-
4	Wind Speed Set	Single	-
1	Cloud Number	Byte	-
4	Tree 1	Int32	-
4	Tree 2	Int32	-
4	Tree 3	Int32	-
1	Tree Style 1	Byte	-
1	Tree Style 2	Byte	-
1	Tree Style 3	Byte	-
1	Tree Style 4	Byte	-
4	Cave Back 1	Int32	-
4	Cave Back 2	Int32	-
4	Cave Back 3	Int32	-
1	Cave Back Style 1	Byte	-
1	Cave Back Style 2	Byte	-
1	Cave Back Style 3	Byte	-
1	Cave Back Style 4	Byte	-
4	Rain	Single	-
1	Event Info	Byte	BitFlags: 1 = Shadow Orb Smashed, 2 = Downed Boss 1, 4 = Downed Boss 2, 8 = Downed Boss 3, 16 = Hard Mode, 32 = Downed Clown, 64 = Server Side Character, 128 = Downed Plant Boss
1	Event Info 2	Byte	BitFlags: 1 = Mech Boss Downed, 2 = Mech Boss Downed 2, 4 = Mech Boss Downed 3, 8 = Mech Boss Any Downed, 16 = Cloud BG, 32 = Crimson, 64 = Pumpkin Moon, 128 = Snow Moon
1	Event Info 3	Byte	BitFlags: 1 = Expert Mode, 2 = FastForwardTime, 3 = Slime Rain, 4 = Downed Slime King, 5 = Downed Queen Bee, 6 = Downed Fishron, 7 = Downed Martians, 8 = Downed Ancient Cultist
1	Event Info 4	Byte	BitFlags: 1 = Downed Moon Lord, 2 = Downed Pumking, 3 = Downed Mourning Wood, 4 = Downed Ice Queen, 5 = Downed Santank, 6 = Downed Everscream, 7 = Downed Golem, 8 = Birthday Party
1	Event Info 5	Byte	BitFlags: 1 = Downed Pirates, 2 = Downed Frost Legion, 3 = Downed Goblins, 4 = Sandstorm, 5 = DD2 Event, 6 = Downed DD2 Tier 1, 7 = Downed DD2 Tier 2, 8 = Downed DD2 Tier 3
1	Invasion Type	SByte	-
8	Lobby ID	UInt64	-
4	Sandstorm Severity	Single	-

Request Essential Tiles [8]

This packet is used once in the connecting phase and does the following:

Sends you the spawn sections
Optionally, if spawn coords aren't -1 - sends you the sections of the selected position (which is the player's spawnpoint)
Synchronises all portals and sections around them

Client -> Server

Size	Description	Type	Notes
4	X	Int32	Player Spawn X
4	Y	Int32	Player Spawn Y

Status [9]

Server -> Client

Size	Description	Type	Notes
4	StatusMax	Int32	Status only increases
?	Status Text	NetworkText	-

Send Section [10]

Server -> Client

Size	Description	Type	Notes
1	Compressed	Boolean	-
4	X Start	Int32	-
4	Y Start	Int32	-
2	Width	Int16	-
2	Height	Int16	-
?	Tiles	-
2	Chest Count	Int16	-
?	Chests	-
2	Sign Count	Int16	-
?	Signs	-
2	TileEntity Count	Int16	-
?	TileEntities	-	-

Section Tile Frame [11]

Server -> Client

Size	Description	Type	Notes
2	StartX	Int16	-
2	StartY	Int16	-
2	EndX	Int16	-
2	EndY	Int16	-

Spawn Player [12]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
2	SpawnX	Int16	-
2	SpawnY	Int16	-

Update Player [13]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Control	Byte	BitFlags: ControlUp = 1, ControlDown = 2, ControlLeft = 4, ControlRight = 8, ControlJump = 16, ControlUseItem = 32, Direction = 64
1	Pulley	Byte	BitFlags: 0 = None, 1 = Direction, 2 = Direction, 4 = Update Velocity, 8 = Vortex Stealth Active, 16 = Gravity Direction, 32 = Shield Raised
1	SelectedItem	Byte	-
4	PositionX	Single	-
4	PositionY	Single	-
4	VelocityX	Single	Not sent if Update Velocity is not set
4	VelocityY	Single	Not sent if Update Velocity is not set

Player Active [14]

Server -> Client

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Active	Boolean	-

Null [15]

Never sent

Size	Description	Type	Notes

Player HP [16]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	HP	Int16	-
2	Max HP	Int16	-

Modify Tile [17]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Action	Byte	Values: 0 = KillTile, 1 = PlaceTile, 2 = KillWall, 3 = PlaceWall, 4 = KillTileNoItem, 5 = PlaceWire, 6 = KillWire, 7 = PoundTile, 8 = PlaceActuator, 9 = KillActuator, 10 = PlaceWire2, 11 = KillWire2, 12 = PlaceWire3, 13 = KillWire3, 14 = SlopeTile, 15 = FrameTrack, 16 = PlaceWire4, 17 = KillWire4, 18 = PokeLogicGate, 19 = Actuate
2	TileX	Int16	-
2	TileY	Int16	-
2	Var1	Int16	KillTile (Fail: Bool), PlaceTile (Type: Byte), KillWall (Fail: Bool), PlaceWall (Type: Byte), KillTileNoItem (Fail: Bool), SlopeTile (Slope: Byte)
1	Var2	Byte	Var2: PlaceTile (Style: Byte)

Time [18]

Server -> Client

Size	Description	Type	Notes
1	DayTime	Boolean	-
4	TimeValue	Int32	-
2	SunModY	Int16	-
2	MoonModY	Int16	-

Door Toggle [19]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Action	Byte	0 = Open Door, 1 = Close Door, 2 = Open Trapdoor, 3 = Close Trapdoor, 4 = Open Tall Gate, 5 = Close Tall Gate
2	TileX	Int16	-
2	TileY	Int16	-
1	Direction	Byte	If (Action == 0) then (if (Direction == -1) then OpenToLeft else OpenToRight) if (Action == 2) then (if (Direction == 1) then PlayerIsAboveTrapdoor) if (Action == 3) then (if (Direction == 1) then PlayerIsAboveTrapdoor)

Send Tile Square [20]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Player ID	UInt16	-
1	TileChangeType	Byte	Only if != 0
2	Size	Int16	-
2	TileX	Int16	-
2	TileY	Int16	-
?	Tiles	-

Update Item Drop [21]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	ItemID	Int16	If below 400 and NetID 0 Then Set NullIf ItemID is 400 Then New Item
4	PositionX	Single	-
4	PositionY	Single	-
4	VelocityX	Single	-
4	VelocityY	Single	-
2	Stack Size	Int16	-
1	Prefix	Byte	-
1	NoDelay	Byte	If 0 then ownIgnore = 0 and ownTime = 100
2	Item NetID	Int16	-

Update Item Owner [22]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	ItemID	Int16	-
1	Player ID	Byte	-

NPC Update [23]

Server -> Client

Size	Description	Type	Notes
2	NPC ID	Int16	-
4	PositionX	Single	-
4	PositionY	Single	-
4	VelocityX	Single	-
4	VelocityY	Single	-
2	Target	UInt16	Player ID
1	Flags	Byte	BitFlags: 1 = Direction, 2 = DirectionY, 4 = AI[0], 8 = AI[1], 16 = AI[2], 32 = AI[3], 64 = SpriteDirection, 128 = LifeMax
?	AI[?]	Single[]	Requires the AI flag to be set in order to be sent down the wire
2	NPC NetID	Int16	-
1	LifeBytes	Byte	The size in bytes of Life, only present if !Flags[7] (LifeMax)
?	Life	Byte or Int16 or Int32	Only present if !Flags[7] (LifeMax)
1	ReleaseOwner	Byte	Only present if NPC is catchable

Strike NPCwith Held Item [24]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
1	Player ID	Byte	-

Projectile Update [27]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	ProjectileID	Int16	-
4	PositionX	Single	-
4	PositionY	Single	-
4	VelocityX	Single	-
4	VelocityY	Single	-
4	KnockBack	Single	-
2	Damage	Int16	-
1	Owner	Byte	Player ID
2	Type	Int16	-
1	AIFlags	Byte	BitFlags: 0 = AI[0] is Present, 1 = AI[1] is Present, 2 = Needs UUID
4	AI0	Single	Requires the AI0 flag to be set in order to be sent down the wire
4	AI1	Single	Requires the AI1 flag to be set in order to be sent down the wire
2	ProjUUID	Int16	Requires the Needs UUID flag to be set in order to be sent down the wire

NPC Strike [28]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
2	Damage	Int16	-1 = Kill
4	Knockback	Single	-
1	Direction	Byte	-
1	Crit	Boolean	-

Destroy Projectile [29]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Projectile ID	Int16	-
1	Owner	Byte	Player ID

Toggle P V P [30]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	PVP Enabled	Boolean	-

Open Chest [31]

Client -> Server

Size	Description	Type	Notes
2	TileX	Int16	-
2	TileY	Int16	-

Packet [31] is always used to "open" a world chest (that is, an item container placed in the world). When this packet is received the server will send the chest's contents, and sync the active chest ID to the player using packet [33].

Update Chest Item [32]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Chest ID	Int16	-
1	ItemSlot	Byte	-
2	Stack	Int16	-
1	Prefix	Byte	-
2	Item Net ID	Int16	-

Sync Active Chest [33]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Chest ID	Int16	-
2	ChestX	Int16	-
2	ChestY	Int16	-
1	Name Length	Byte	-
?	Chest Name	String	Only if length > 0 && <= 20

This packet is used to tell the server that you've exited the chest view (sending ID -1), that you're looking at your piggy bank (sending ID -2), that you're looking at your safe (sending ID -3) and that you're looking at your defender's forge (sending ID -4). Those are sent at every chest interaction. Packet [33]'s main function is to synchronize the sending client's active chest to the server, and its side function is to rename the chest. It should be noted that this packet is not sent when you open a regular chest. The server knows which chest you opened when you send [31], so the [33] is only sent upon exit to unblock the chest (as opposed to both open & exit for banks like piggy, safe & defender forge)

PlaceChest [34]

Server <-> Client

Size	Description	Type	Notes
1	ChestID	Byte	BitFlags:0 = Place Chest, 1 = Kill Chest, 2 = Place Dresser, 3 = Kill Dresser. 4 = Place Containers2, 5 = Kill Containers2
2	TileX	Int16	-
2	TileY	Int16	-
2	Style	Int16	FrameX(Chest type)
2	Chest ID to destroy	Int16	ID if client is receiving packet, else 0

Heal Effect [35]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Heal Amount	Int16	-

Player Zone [36]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Zone1	Byte	1 = Dungeon, 2 = Corruption, 4 =Holy, 8 = Meteor, 16 = Jungle, 32 = Snow, 64 = Crimson, 128 = Water Candle
1	Zone2	Byte	1 = Peace Candle, 2 = Solar Tower, 4 = Vortex Tower, 8 = Nebula Tower, 16 = Stardust Tower, 32 = Desert, 64 = Glowshroom, 128 = Underground Desert
1	Zone3	Byte	1 = Overworld, 2 = Dirt Layer, 4 = Rock Layer, 8 = Underworld, 16 = Beach, 32 = Rain, 64 = Sandstorm
1	Zone4	Byte	1 = Old One's Army

Request Password [37]

Server -> Client

Size	Description	Type	Notes

Send Password [38]

Client -> Server

Size	Description	Type	Notes
?	Password	String	-

Remove Item Owner [39]

Server -> Client

Size	Description	Type	Notes
2	ItemIndex	Int16	-

Set Active NPC [40]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Npc Talk Target	Int16	-

Player Item Animation [41]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Item Rotation	Single	-
2	Item Animation	Int16	-

Player Mana [42]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Mana	Int16	-
2	Max Mana	Int16	-

Mana Effect [43]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Mana Amount	Int16	-

Player Team [45]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Team	Byte	-

Request Sign [46]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-

Update Sign [47]

Updates sign if sent from client otherwise displays sign to client.

Size	Description	Type	Notes
2	Sign ID	Int16	-
2	X	Int16	-
2	Y	Int16	-
?	Text	String	-
1	Player ID	Byte	-

Set Liquid [48]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	Liquid	Byte	-
1	Liquid Type	Byte	-

Complete Connection and Spawn [49]

Server -> Client

Size	Description	Type	Notes
-		-

Update Player Buff [50]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1 * 22	BuffType	Byte[22]

Special NPC Effect [51]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Type	Byte	Values: 1 = Spawn Skeletron, 2 = Cause sound at player, 3 = Start Sundialing (Only works if server is receiving), 4 = BigMimcSpawnSmoke

Unlock [52]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Type	Byte	Values: 1 = Chest Unlock, 2 = Door Unlock
2	X	Int16	-
2	Y	Int16	-

Add NPC Buff [53]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
1	Buff	Byte	-
2	Time	Int16	-

Update NPC Buff [54]

Server -> Client

Size	Description	Type	Notes
2	NPC ID	Int16	-
1	Buff ID	Byte	-
2	Time	Int16	-
1	Buff ID 2	Byte	-
2	Time 2	Int16	-
1	Buff ID 3	Byte	-
2	Time 3	Int16	-
1	Buff ID 4	Byte	-
2	Time 4	Int16	-
1	Buff ID 5	Byte	-
2	Time 5	Int16	-

Add Player Buff [55]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Buff	Byte	-
4	Time	Int32	-

Update NPC Name [56]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
?	Name	String	Only if client is receiving packet

Update Good Evil [57]

Server -> Client

Size	Description	Type	Notes
1	Good	Byte	-
1	Evil	Byte	-
1	Crimson	Byte	-

Play Music Item [58]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Note	Single	-

Hit Switch [59]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-

NPC Home Update [60]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
2	HomeTileX	Int16	-
2	HomeTileY	Int16	-
1	Homeless	Byte	-

Spawn Boss Invasion [61]

Client -> Server

Size	Description	Type	Notes
2	Player ID	Int16	-
2	Type	Int16	Negative Values: -1 = GoblinInvasion, -2 = FrostInvasion, -3 = PirateInvasion, -4 = PumpkinMoon, -5 = SnowMoon, -6 = Eclipse, -7 = Martian Moon Positive Values: Spawns any of these NPCs:4,13,50,126,125,134,127,128,131,129,130,222,245,266,370,75,398,439,493,507,422,517

Player Dodge [62]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Flag	Byte	1 = Ninja Dodge 2 = Shadow Dodge

Paint Tile [63]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	Color	Byte	-

Paint Wall [64]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	Color	Byte	-

Player NPC Teleport [65]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Flags	Byte	BitFlags: 0 = Player Teleport (Neither 1 or 2), 1 = NPC Teleport, 2 = Player Teleport to Other Player, 4 = Style += 1, 8 = Style += 2
2	Target ID	Int16	-
4	X	Single	-
4	Y	Single	-

Heal Other Player [66]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Heal Amount	Int16	-

Placeholder [67]

Does not exist in the official client. Exists solely for the purpose of being used by custom clients and servers.

Size	Description	Type	Notes
-		-

Client UUID [68]

Client -> Server

Size	Description	Type	Notes
?	UUID	String

Get Chest Name [69]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Chest ID	Int16	-
2	Chest X	Int16	-
2	Chest Y	Int16	-
?	Name	String	-

Catch NPC [70]

Client -> Server

Size	Description	Type	Notes
2	NPC ID	Int16	-
1	Who	Byte	-

Release NPC [71]

Client -> Server

Size	Description	Type	Notes
4	X	Int32	-
4	Y	Int32	-
2	NPC Type	Int16	-
1	Style	Byte	Sent to NPC AI[2]

Travelling Merchant Inventory [72]

Server -> Client

Size	Description	Type	Notes
2*40	Items	Int16[40]	Each short related to an item type NetID.

Teleportation Potion [73]

Server <-> Client

Size	Description	Type	Notes

Angler Quest [74]

Server -> Client

Size	Description	Type	Notes
1	Quest	Byte	-
1	Completed	Boolean	-

Complete Angler Quest Today [75]

Client -> Server

Size	Description	Type	Notes

Number Of Angler Quests Completed [76]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Angler Quests Completed	Int32	-

Create Temporary Animation [77]

Server -> Client

Size	Description	Type	Notes
2	AnimationType	Int16	-
2	TileType	UInt16	-
2	X	Int16	-
2	Y	Int16	-

Report Invasion Progress [78]

Server -> Client

Size	Description	Type	Notes
4	Progress	Int32	-
4	MaxProgress	Int32	-
1	Icon	SByte	-
1	Wave	SByte	-

Place Object [79]

Server <-> Client

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
2	Type	Int16	-
2	Style	Int16	-
1	Alternate	Byte	-
1	Random	SByte	-
1	Direction	Boolean	-

Sync Player Chest Index [80]

Server -> Client

Size	Description	Type	Notes
1	Player	Byte	-
2	Chest	Int16	-

Create Combat Text [81]

Server -> Client

Size	Description	Type	Notes
4	X	Single	-
4	Y	Single	-
3	Color	Color	-
4	Heal Amount	Int32	-

Load Net Module [82]

Client -> Server

Size	Description	Type	Notes
2	Module ID	Unsigned Short
??	Payload	??

Note: 82 is sent prior to chat packets in 1.3.5.x. Instructs the server to load a net module.

Set NPC Kill Count [83]

Server -> Client

Size	Description	Type	Notes
2	NPC Type	Int16	-
4	Kill Count	Int32	-

Set Player Stealth [84]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player	Byte	-
4	Stealth	Single	-

Force Item Into Nearest Chest [85]

Client -> Server

Size	Description	Type	Notes
1	Inventory Slot	Byte	-

Update Tile Entity [86]

Server -> Client

Size	Description	Type	Notes
4	Key	Int32	-
1	Remove?	Boolean	-
1	TileEntity Type	Byte	If Remove? == false
4	ID	Int32	If Remove? == false
2	X	Int16	If Remove? == false
2	Y	Int16	If Remove? == false
2	NPC	Int16	If Remove? == false && Type = 0
2	ItemType	Int16	If Remove? == false
1	Prefix	Byte	If Remove? == false
2	Stack	Int16	If Remove? == false

Place Tile Entity [87]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	Type	Byte	2 = Logic Sensor 1 = Item Frame 0 = Training Dummy

Tweak Item (FKA. Alter Item Drop) [88]

Server -> Client

Size	Description	Type	Notes
2	Item Index	Int16	-
1	Flags1	Byte	BitFlags: 1 = Color, 2 = Damage, 4 = Knockback, 8 = UseAnimation, 16 = UseTime, 32 = Shoot, 64 = ShootSpeed, 128 = NextFlags
4	Packed Color Value	UInt32	if Flags1.Color
2	Damage	UInt16	if Flags1.Damage
4	Knockback	Single	if Flags1.Knockback
2	Use Animation	UInt16	if Flags1.UseAnimation
2	Use Time	UInt16	if Flags1.UseTime
2	Shoot	Int16	if Flags1.Shoot
4	Shoot Speed	Float	if Flags1.ShootSpeed
1	Flags2	Byte	if Flags1.NextFlags BitFlags: 1 = Width, 2 = Height, 4 = Scale, 8 = Ammo, 16 = UseAmmo, 32 = NotAmmo
2	Width	Int16	if Flags2.Width
2	Height	Int16	if Flags2.Height
4	Scale	Float	if Flags2.Scale
2	Ammo	Int16	If Flags2.Ammo
2	UseAmmo	Int16	If Flags2.UseAmmo
1	NotAmmo	Bool	If Flags2.NotAmmo

Place Item Frame [89]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
2	Item Id	Int16	-
1	Prefix	Byte	-
2	Stack	Int16	-

Update Item Drop 2 [90]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	ItemID	Int16	If below 400 and NetID 0 Then Set NullIf ItemID is 400 Then New Item
4	PositionX	Single	-
4	PositionY	Single	-
4	VelocityX	Single	-
4	VelocityY	Single	-
2	Stack Size	Int16	-
1	Prefix	Byte	-
1	NoDelay	Byte	If 0 then ownIgnore = 0 and ownTime = 100
2	Item NetID	Int16	-

Sync Emote Bubble [91]

Server -> Client

Size	Description	Type	Notes
4	Emote ID	Int32	-
1	Anchor Type	Byte	-
2	MetaData	UInt16	Only if AnchorType != 255
1	Lifetime	Byte	Only if AnchorType != 255
1	Emote	Byte	Only if AnchorType != 255
2	EmoteMetaData	Int16	Only sent if AnchorType != 255 and Emote < 0

Sync Extra Value [92]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC Index	Int16	-
4	ExtraValue	Single	-
4	X	Single	-
4	Y	Single	-

Social Handshake [93]

Not used

Size	Description	Type	Notes

Deprecated [94]

Not used

Size	Description	Type	Notes

Kill Portal [95]

Client -> Server

Size	Description	Type	Notes
2	Projectile Index	UInt16	-

Player Teleport Portal [96]

Server <-> Client

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Portal Color Index	Int16	-
4	New Position X	Single	-
4	New Position Y	Single	-
4	Velocity X	Single	-
4	Velocity Y	Single	-

Notify Player NPC Killed [97]

Server -> Client

Size	Description	Type	Notes
2	NPC ID	Int16	-

Notify Player Of Event [98]

Server -> Client

Size	Description	Type	Notes
2	Event ID	Int16	-

Update Minion Target [99]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Target X	Single	-
4	Target Y	Single	-

NPC Teleport Portal [100]

Server <-> Client

Size	Description	Type	Notes
2	NPC ID	UInt16	-
2	Portal Color Index	Int16	-
4	New Position X	Single	-
4	New Position Y	Single	-
4	Velocity X	Single	-
4	Velocity Y	Single	-

Update Shield Strengths [101]

Server -> Client

Size	Description	Type	Notes
2	Solar Tower Shield	UInt16	-
2	Vortex Tower Shield	UInt16	-
2	Nebula Tower Shield	UInt16	-
2	Stardust Tower Shield	UInt16	-

Nebula Level Up [102]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Level Up Type	Byte	-
4	Origin X	Single	In world coordinate pixels.
4	Origin Y	Single	In world coordinate pixels.

Moon Lord Countdown [103]

Server -> Client

Size	Description	Type	Notes
4	Moon Lord Countdown	Int32	-

NPC Shop Item [104]

Server -> Client

Size	Description	Type	Notes
1	Slot	Byte	-
2	Item Type	Int16	-
2	Stack	Int16	-
1	Prefix	Byte	-
4	Value	Int32	-
1	Flags	Byte	BitFlags: 1 = BuyOnce

Gem Lock Toggle [105]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	On	Boolean	-

Poof of Smoke [106]

Server -> Client

Size	Description	Type	Notes
4	PackedVector	Int32	Two Int16's packed into 4 bytes.

Smart Text Message (FKA. Chat Message v2) [107]

Server -> Client

Size	Description	Type	Notes
3	Message Color	Color	Client cannot change colors
?	Message	NetworkText
2	Message Length	Int16

Wired Cannon Shot [108]

Server -> Client

Size	Description	Type	Notes
2	Damage	Int16	-
4	Knockback	Single	-
2	X	Int16	-
2	Y	Int16	-
2	Angle	Int16	-
2	Ammo	Int16	-
1	Player ID	Byte	Shooter's Player ID

Mass Wire Operation [109]

Client -> Server

Size	Description	Type	Notes
2	Start X	Int16	-
2	Start Y	Int16	-
2	End X	Int16	-
2	End Y	Int16	-
1	ToolMode	Byte	BitFlags: 1 = Red, 2 = Green, 4 = Blue, 8 = Yellow, 16 = Actuator, 32 = Cutter

Mass Wire Operation Consume [110]

Server -> Client

Size	Description	Type	Notes
2	Item Type	Int16	-
2	Quantity	Int16	-
1	Player ID	Byte	-

Toggle Birthday Party [111]

Client -> Server

Size	Description	Type	Notes

GrowFX [112]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	GrowEffect	Boolean	-
2	X	Int16	-
2	Y	Int16	-
1	Height	Byte	-
2	Tree Gore	Int16	-

CrystalInvasionStart [113]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-

CrystalInvasionWipeAll [114]

Server -> Client

Size	Description	Type	Notes

MinionAttackTargetUpdate [115]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Minion Attack Target	Int16	-

CrystalInvasionSendWaitTime [116]

Server -> Client

Size	Description	Type	Notes
4	Time Until Next Wave	Int32	1800 (30s) between waves, 30 (5s) when starting

PlayerHurtV2 [117]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
?	Player Death Reason	PlayerDeathReason	-
2	Damage	Int16	-
1	Hit Direction	Byte	-
1	Flags	Byte	BitFlags: 1 = Crit, 2 = PvP
1	Cooldown Counter	SByte	-

PlayerDeathV2 [118]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
?	Player Death Reason	PlayerDeathReason	-
2	Damage	Int16	-
1	Hit Direction	Byte	-
1	Flags	Byte	BitFlags: 1 = PvP

CombatTextString [119]

Client <-> Server

Size	Description	Type	Notes
4	X	Single	-
4	Y	Single	-
3	Color	Color	-
?	Combat Text	NetworkText	-

Raw

combined.md

Connect Request [1]

Client -> Server

Size	Description	Type	Notes
?	Version	String	"Terraria" + Main.curRelease

Disconnect [2]

Server -> Client

Size	Description	Type	Notes
?	Reason	NetworkText	-

Set User Slot [3]

Server -> Client

Size	Description	Type	Notes
1	Player ID	Byte	-

Player Info [4]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Skin Varient	Byte	-
1	Hair	Byte	If >162 then Set To 0
?	Name	String	-
1	Hair Dye	Byte	-
1	Hide Visuals	Byte	-
1	Hide Visuals 2	Byte	-
1	Hide Misc	Byte	-
3	Hair Color	Color	-
3	Skin Color	Color	-
3	Eye Color	Color	-
3	Shirt Color	Color	-
3	Under Shirt Color	Color	-
3	Pants Color	Color	-
3	Shoe Color	Color	-
1	Difficulty	Byte	-

Player Inventory Slot [5]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Slot ID	Int16	0 - 58 = Inventory, 59 - 78 = Armor, 79 - 88 = Dye, 89 - 93 MiscEquips, 94 - 98 = MiscDyes, 99 - 138 = Piggy bank, 139-178 = Safe, 179 = Trash
2	Stack	Int16	-
1	Prefix	Byte	-
2	Item NetID	Int16	-

Request World Data [6]

Client -> Server

Size	Description	Type	Notes

World Info [7]

Server -> Client

Size	Description	Type	Notes
4	Time	Int32	-
1	Day and Moon Info	Byte	BitFlags: 1 = Day Time, 2 = Blood Moon, 4 = Eclipse
1	Moon Phase	Byte	-
2	Max Tiles X	Int16	-
2	Max Tiles Y	Int16	-
2	Spawn X	Int16	-
2	Spawn Y	Int16	-
2	WorldSurface	Int16	-
2	RockLayer	Int16	-
4	World ID	Int32	-
?	World Name	String	-
1	Game Mode	Byte	-
16	World Unique ID	Byte[]	-
8	World Generator Version	UInt64	-
1	Moon Type	Byte	-
1	Tree Background	Byte	-
1	Corruption Background	Byte	-
1	Jungle Background	Byte	-
1	Snow Background	Byte	-
1	Hallow Background	Byte	-
1	Crimson Background	Byte	-
1	Desert Background	Byte	-
1	Ocean Background	Byte	-
1	?? Background	Byte	-
1	?? Background	Byte	-
1	?? Background	Byte	-
1	?? Background	Byte	-
1	?? Background	Byte	-
1	Ice Back Style	Byte	-
1	Jungle Back Style	Byte	-
1	Hell Back Style	Byte	-
4	Wind Speed Set	Single	-
1	Cloud Number	Byte	-
4	Tree 1	Int32	-
4	Tree 2	Int32	-
4	Tree 3	Int32	-
1	Tree Style 1	Byte	-
1	Tree Style 2	Byte	-
1	Tree Style 3	Byte	-
1	Tree Style 4	Byte	-
4	Cave Back 1	Int32	-
4	Cave Back 2	Int32	-
4	Cave Back 3	Int32	-
1	Cave Back Style 1	Byte	-
1	Cave Back Style 2	Byte	-
1	Cave Back Style 3	Byte	-
1	Cave Back Style 4	Byte	-
4	Forest 1 Tree Top Style	Int32	-
4	Forest 2 Tree Top Style	Int32	-
4	Forest 3 Tree Top Style	Int32	-
4	Forest 4 Tree Top Style	Int32	-
4	Corruption Tree Top Style	Int32	-
4	Jungle Tree Top Style	Int32	-
4	Snow Tree Top Style	Int32	-
4	Hallow Tree Top Style	Int32	-
4	Crimson Tree Top Style	Int32	-
4	Desert Tree Top Style	Int32	-
4	Ocean Tree Top Style	Int32	-
4	Glowing Mushroom Tree Top Style	Int32	-
4	Underworld Tree Top Style	Int32	-
4	Rain	Single	-
1	Event Info	Byte	BitFlags: 1 = Shadow Orb Smashed, 2 = Downed Boss 1, 4 = Downed Boss 2, 8 = Downed Boss 3, 16 = Hard Mode, 32 = Downed Clown, 64 = Server Side Character, 128 = Downed Plant Boss
1	Event Info 2	Byte	BitFlags: 1 = Mech Boss Downed, 2 = Mech Boss Downed 2, 4 = Mech Boss Downed 3, 8 = Mech Boss Any Downed, 16 = Cloud BG, 32 = Crimson, 64 = Pumpkin Moon, 128 = Snow Moon
1	Event Info 3	Byte	BitFlags: 1 = Expert Mode, 2 = FastForwardTime, 4 = Slime Rain, 8 = Downed Slime King, 16 = Downed Queen Bee, 32 = Downed Fishron, 64 = Downed Martians, 128 = Downed Ancient Cultist
1	Event Info 4	Byte	BitFlags: 1 = Downed Moon Lord, 2 = Downed Pumking, 4 = Downed Mourning Wood, 8 = Downed Ice Queen, 16 = Downed Santank, 32 = Downed Everscream, 64 = Downed Golem, 128 = Birthday Party
1	Event Info 5	Byte	BitFlags: 1 = Downed Pirates, 2 = Downed Frost Legion, 4 = Downed Goblins, 8 = Sandstorm, 16 = DD2 Event, 32 = Downed DD2 Tier 1, 64 = Downed DD2 Tier 2, 128 = Downed DD2 Tier 3
1	Event Info 6	Byte	BitFlags: 1 = Combat Book Used, 2 = Manual Lanterns, 4 = Downed Solar Tower, 8 = Downed Vortex Tower, 16 = Downed Tower Nebula, 32 = Downed Stardust Tower, 64 = Force Halloween (day), 128 = Force XMas (day)
1	Event Info 7	Byte	BitFlags: 1 = Bought Cat, 2 = Bought Dog, 4 = Bought Bunny, 8 = Free Cake, 16 = Drunk World, 32 = Downed Empress of Light, 64 = Downed Queen Slime
2	Copper Ore Tier	Int16	Tile ID 7 or 166
2	Iron Ore Tier	Int16	Tile ID 6 or 167
2	Silver Ore Tier	Int16	Tile ID 9 or 168
2	Gold Ore Tier	Int16	Tile ID 8 or 169
2	Cobalt Ore Tier	Int16	Tile ID 107 or 221
2	Mythril Ore Tier	Int16	Tile ID 108 or 222
2	Adamantite Ore Tier	Int16	Tile ID 111 or 223
1	Invasion Type	SByte	-
8	Lobby ID	UInt64	-
4	Sandstorm Severity	Single	-

Request Essential Tiles [8]

This packet is used once in the connecting phase and does the following:

Sends you the spawn sections
Optionally, if spawn coords aren't -1 - sends you the sections of the selected position (which is the player's spawnpoint)
Synchronises all portals and sections around them

Client -> Server

Size	Description	Type	Notes
4	X	Int32	Player Spawn X
4	Y	Int32	Player Spawn Y

Status [9]

Server -> Client

Size	Description	Type	Notes
4	StatusMax	Int32	Status only increases
?	Status Text	NetworkText	-
1	Status Text Flags	Byte	-

Send Section [10]

Server -> Client

Size	Description	Type	Notes
1	Compressed	Boolean	-
4	X Start	Int32	-
4	Y Start	Int32	-
2	Width	Int16	-
2	Height	Int16	-
?	Tiles	-
2	Chest Count	Int16	-
?	Chests	-
2	Sign Count	Int16	-
?	Signs	-
2	TileEntity Count	Int16	-
?	TileEntities	-	-

Section Tile Frame [11]

Server -> Client

Size	Description	Type	Notes
2	Start X	Int16	-
2	Start Y	Int16	-
2	End X	Int16	-
2	End Y	Int16	-

Spawn Player [12]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Spawn X	Int16	-
2	Spawn Y	Int16	-
4	Respawn Time Remaining	Int32	If > 0, then player is still dead
1	Player Spawn Context	Byte	Enum: 0 = ReviveFromDeath, 1 = SpawningIntoWorld, 2 = RecallFromItem

Update Player [13]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Control	Byte	BitFlags: 1 = ControlUp, 2 = ControlDown, 4 = ControlLeft, 8 = ControlRight, 16 = ControlJump, 32 = ControlUseItem, 64 = Direction
1	Pulley	Byte	BitFlags: 1 = Pulley Enabled, 2 = Direction, 4 = UpdateVelocity, 8 = VortexStealthActive, 16 = GravityDirection, 32 = ShieldRaised
1	Misc	Byte	BitFlags: 1 = HoveringUp, 2 = VoidVaultEnabled, 4 = Sitting, 8 = DownedDD2Event, 16 = IsPettingAnimal, 32 = IsPettingSmallAnimal, 64 = UsedPotionofReturn, 128 = HoveringDown
1	SleepingInfo	Byte	BitFlags: 1 = IsSleeping
4	Original Position X	Single	Original Poisition for Potion of Return, only sent if UsedPotionofReturn flag is true
4	Original Position Y	Single	Original Poisition for Potion of Return, only sent if UsedPotionofReturn flag is true
4	Home Position X	Single	Home Position for Potion of Return, only sent if UsedPotionofReturn flag is true
4	Home Position Y	Single	Home Position for Potion of Return, only sent if UsedPotionofReturn flag is true
1	Selected Item	Byte	-
4	Position X	Single	-
4	Position Y	Single	-
4	Velocity X	Single	Not sent if UpdateVelocity is not set
4	Velocity Y	Single	Not sent if UpdateVelocity is not set

Player Active [14]

Server -> Client

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Active	Boolean	-

Null [15]

Never sent

Size	Description	Type	Notes

Player HP [16]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	HP	Int16	-
2	Max HP	Int16	-

Modify Tile [17]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Action	Byte	Values: 0 = KillTile, 1 = PlaceTile, 2 = KillWall, 3 = PlaceWall, 4 = KillTileNoItem, 5 = PlaceWire, 6 = KillWire, 7 = PoundTile, 8 = PlaceActuator, 9 = KillActuator, 10 = PlaceWire2, 11 = KillWire2, 12 = PlaceWire3, 13 = KillWire3, 14 = SlopeTile, 15 = FrameTrack, 16 = PlaceWire4, 17 = KillWire4, 18 = PokeLogicGate, 19 = Actuate, 20 = KillTile, 21 = ReplaceTile, 22 = ReplaceWall, 23 = SlopePoundTile
2	Tile X	Int16	-
2	Tile Y	Int16	-
2	Flags1	Int16	KillTile (Fail: Bool), PlaceTile (Type: Byte), KillWall (Fail: Bool), PlaceWall (Type: Byte), KillTileNoItem (Fail: Bool), SlopeTile (Slope: Byte), ReplaceTile (Type: Int16), ReplaceWall (Type: Int16)
1	Flags2	Byte	PlaceTile (Style: Byte), ReplaceTile (Style: Byte)

Time [18]

Server -> Client

Size	Description	Type	Notes
1	DayTime	Boolean	-
4	TimeValue	Int32	-
2	SunModY	Int16	-
2	MoonModY	Int16	-

Door Toggle [19]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Action	Byte	0 = Open Door, 1 = Close Door, 2 = Open Trapdoor, 3 = Close Trapdoor, 4 = Open Tall Gate, 5 = Close Tall Gate
2	Tile X	Int16	-
2	Tile Y	Int16	-
1	Direction	Byte	If (Action == 0) then (if (Direction == -1) then OpenToLeft else OpenToRight) if (Action == 2) then (if (Direction == 1) then PlayerIsAboveTrapdoor) if (Action == 3) then (if (Direction == 1) then PlayerIsAboveTrapdoor)

Send Tile Square [20]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Player ID	UInt16	-
1	TileChangeType	Byte	Only if != 0
2	Size	Int16	-
2	Tile X	Int16	-
2	Tile Y	Int16	-
?	Tiles	-

Update Item Drop [21]

See Update Item Drop 2 [90]

Update Item Owner [22]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Item ID	Int16	-
1	Player ID	Byte	-

NPC Update [23]

Server -> Client

Size	Description	Type	Notes
2	NPC ID	Int16	-
4	Position X	Single	-
4	Position Y	Single	-
4	Velocity X	Single	-
4	Velocity Y	Single	-
2	Target	UInt16	Player ID
1	Flags	Byte	BitFlags: 1 = Direction, 2 = DirectionY, 4 = AI[0], 8 = AI[1], 16 = AI[2], 32 = AI[3], 64 = SpriteDirection, 128 = LifeMax
?	AI[?]	Single[]	Requires the AI flag to be set in order to be sent down the wire
2	NPC NetID	Int16	-
1	LifeBytes	Byte	The size in bytes of Life, only present if !Flags[7] (LifeMax)
?	Life	Byte or Int16 or Int32	Only present if !Flags[7] (LifeMax)
1	ReleaseOwner	Byte	Only present if NPC is catchable

Strike NPCwith Held Item [24]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
1	Player ID	Byte	-

Null [25]

Never sent

Size	Description	Type	Notes

Null [26]

Never sent

Size	Description	Type	Notes

Projectile Update [27]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Projectile ID	Int16	-
4	Position X	Single	-
4	Position Y	Single	-
4	Velocity X	Single	-
4	Velocity Y	Single	-
1	Owner	Byte	Player ID
2	Type	Int16	-
1	ProjFlags	Byte	BitFlags: 1 = AI[0], 2 = AI[1], 16 = Damage, 32 = Knockback, 64 = OriginalDamage, 128 = ProjUUID
4	AI0	Single	Only sent if AI[0] flag is true
4	AI1	Single	Only sent if AI[1] flag is true
2	Damage	Int16	Only sent if Damage flag is true
4	Knockback	Single	Only sent if Knockback flag is true
2	Original Damage	Int16	Only sent if OriginalDamage flag is true
2	Proj UUID	Int16	Only sent if ProjUUID flag is true

NPC Strike [28]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
2	Damage	Int16	-1 = Kill
4	Knockback	Single	-
1	Hit Direction	Byte	-
1	Crit	Boolean	-

Destroy Projectile [29]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Projectile ID	Int16	-
1	Owner	Byte	Player ID

Toggle P V P [30]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	PVP Enabled	Boolean	-

Open Chest [31]

Client -> Server

Size	Description	Type	Notes
2	Tile X	Int16	-
2	Tile Y	Int16	-

Update Chest Item [32]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Chest ID	Int16	-
1	Item Slot	Byte	-
2	Stack	Int16	-
1	Prefix	Byte	-
2	Item Net ID	Int16	-

Sync Active Chest [33]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Chest ID	Int16	-
2	Chest X	Int16	-
2	Chest Y	Int16	-
1	Name Length	Byte	-
?	Chest Name	String	Only if length > 0 && <= 20

PlaceChest [34]

Server <-> Client

Size	Description	Type	Notes
1	Chest ID	Byte	BitFlags:0 = Place Chest, 1 = Kill Chest, 2 = Place Dresser, 3 = Kill Dresser. 4 = Place Containers2, 5 = Kill Containers2
2	Tile X	Int16	-
2	Tile Y	Int16	-
2	Style	Int16	FrameX(Chest type)
2	Chest ID to destroy	Int16	ID if client is receiving packet, else 0

Heal Effect [35]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Heal Amount	Int16	-

Player Zone [36]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	ZoneFlags1	Byte	1 = Dungeon, 2 = Corruption, 4 =Holy, 8 = Meteor, 16 = Jungle, 32 = Snow, 64 = Crimson, 128 = Water Candle
1	ZoneFlags2	Byte	1 = Peace Candle, 2 = Solar Tower, 4 = Vortex Tower, 8 = Nebula Tower, 16 = Stardust Tower, 32 = Desert, 64 = Glowshroom, 128 = Underground Desert
1	ZoneFlags3	Byte	1 = Overworld, 2 = Dirt Layer, 4 = Rock Layer, 8 = Underworld, 16 = Beach, 32 = Rain, 64 = Sandstorm
1	ZoneFlags4	Byte	1 = Old One's Army, 2 = Granite, 4 = Marble, 8 = Hive, 16 = Gem Cave, 32 = Lihzhard Temple, 64 = Graveyard

Request Password [37]

Server -> Client

Size	Description	Type	Notes

Send Password [38]

Client -> Server

Size	Description	Type	Notes
?	Password	String	-

Remove Item Owner [39]

Server -> Client

Size	Description	Type	Notes
2	Item Index	Int16	-

Set Active NPC [40]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	NPC Talk Target	Int16	-

Player Item Animation [41]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Item Rotation	Single	-
2	Item Animation	Int16	-

Player Mana [42]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Mana	Int16	-
2	Max Mana	Int16	-

Mana Effect [43]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Mana Amount	Int16	-

Null [44]

Never sent

Size	Description	Type	Notes

Player Team [45]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Team	Byte	-

Request Sign [46]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-

Update Sign [47]

Updates sign if sent from client otherwise displays sign to client.

Size	Description	Type	Notes
2	Sign ID	Int16	-
2	X	Int16	-
2	Y	Int16	-
?	Text	String	-
1	Player ID	Byte	-
1	SignFlags	Byte	BitFlags: 1 = TBD

Set Liquid [48]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	Liquid	Byte	-
1	Liquid Type	Byte	-

Complete Connection and Spawn [49]

Server -> Client

Size	Description	Type	Notes
-	-	-	-

Update Player Buff [50]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2 * 22	BuffType	UInt16[22]	-

Special NPC Effect [51]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Type	Byte	Values: 1 = Spawn Skeletron, 2 = Cause sound at player, 3 = Start Sundialing (Only works if server is receiving), 4 = BigMimcSpawnSmoke

Unlock [52]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Type	Byte	Values: 1 = Chest Unlock, 2 = Door Unlock
2	X	Int16	-
2	Y	Int16	-

Add NPC Buff [53]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
2	Buff	UInt16	-
2	Time	Int16	-

Update NPC Buff [54]

Server -> Client

Size	Description	Type	Notes
2	NPC ID	Int16	-
2	Buff ID 1	UInt16	-
2	Time 1	Int16	-
2	Buff ID 2	UInt16	-
2	Time 2	Int16	-
2	Buff ID 3	UInt16	-
2	Time 3	Int16	-
2	Buff ID 4	UInt16	-
2	Time 4	Int16	-
2	Buff ID 5	UInt16	-
2	Time 5	Int16	-

Add Player Buff [55]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Buff	UInt16	-
4	Time	Int32	-

Update NPC Name [56]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
?	Name	String	Only if client is receiving packet
4	TownNpcVariationIndex	Int32	Only if client is receiving packet

Update Good Evil [57]

Server -> Client

Size	Description	Type	Notes
1	Good	Byte	-
1	Evil	Byte	-
1	Crimson	Byte	-

Play Music Item [58]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Note	Single	-

Hit Switch [59]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-

NPC Home Update [60]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC ID	Int16	-
2	Home Tile X	Int16	-
2	Home Tile Y	Int16	-
1	Homeless	Byte	-

Spawn Boss Invasion [61]

Client -> Server

Size	Description	Type	Notes
2	Player ID	Int16	-
2	Type	Int16	Negative Values: -1 = GoblinInvasion, -2 = FrostInvasion, -3 = PirateInvasion, -4 = PumpkinMoon, -5 = SnowMoon, -6 = Eclipse, -7 = Martian Moon, -8 = Impending Doom, -10 = Blood Moon, -11 = Combat Book Used, -12 = Bought Cat, -13 = Bought Dog, -14 = Bought Bunny, Positive Values: Spawns any of these NPCs: 4, 13, 50, 126, 125, 134, 127, 128, 131, 129, 130, 222, 245, 266, 370, 657

Player Dodge [62]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Flag	Byte	1 = Ninja Dodge 2 = Shadow Dodge

Paint Tile [63]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	Color	Byte	-

Paint Wall [64]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	Color	Byte	-

Player NPC Teleport [65]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Flags	Byte	BitFlags: 0 = Player Teleport (Neither 1 or 2), 1 = NPC Teleport, 2 = Player Teleport to Other Player, 4 = GetPositionFromTarget, 8 = HasExtraInfo
2	Target ID	Int16	-
4	X	Single	-
4	Y	Single	-
1	Style	Byte	-
4	ExtraInfo	Int32	Only sent if HasExtraInfo flag is true

Heal Other Player [66]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Heal Amount	Int16	-

Placeholder [67]

Does not exist in the official client. Exists solely for the purpose of being used by custom clients and servers.

Size	Description	Type	Notes
-		-

Client UUID [68]

Client -> Server

Size	Description	Type	Notes
?	UUID	String

Get Chest Name [69]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Chest ID	Int16	-
2	Chest X	Int16	-
2	Chest Y	Int16	-
?	Name	String	-

Catch NPC [70]

Client -> Server

Size	Description	Type	Notes
2	NPC ID	Int16	-
1	Player ID	Byte	-

Release NPC [71]

Client -> Server

Size	Description	Type	Notes
4	X	Int32	-
4	Y	Int32	-
2	NPC Type	Int16	-
1	Style	Byte	Sent to NPC AI[2]

Travelling Merchant Inventory [72]

Server -> Client

Size	Description	Type	Notes
2*40	Items	Int16[40]	Each short related to an item type NetID.

Teleportation Potion [73]

Server <-> Client

Size	Description	Type	Notes
1	Type	Byte	0 = Teleportation Potion, 1 = Magic Conch, 2 = Demon Conch

Angler Quest [74]

Server -> Client

Size	Description	Type	Notes
1	Quest	Byte	-
1	Completed	Boolean	-

Complete Angler Quest Today [75]

Client -> Server

Size	Description	Type	Notes

Number Of Angler Quests Completed [76]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Angler Quests Completed	Int32	-
4	Golfer Score	Int32	-

Create Temporary Animation [77]

Server -> Client

Size	Description	Type	Notes
2	Animation Type	Int16	-
2	Tile Type	UInt16	-
2	X	Int16	-
2	Y	Int16	-

Report Invasion Progress [78]

Server -> Client

Size	Description	Type	Notes
4	Progress	Int32	-
4	Max Progress	Int32	-
1	Icon	SByte	-
1	Wave	SByte	-

Place Object [79]

Server <-> Client

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
2	Type	Int16	-
2	Style	Int16	-
1	Alternate	Byte	-
1	Random	SByte	-
1	Direction	Boolean	-

Sync Player Chest Index [80]

Server -> Client

Size	Description	Type	Notes
1	Player	Byte	-
2	Chest	Int16	-

Create Combat Text [81]

Server -> Client

Size	Description	Type	Notes
4	X	Single	-
4	Y	Single	-
3	Color	Color	-
4	Heal Amount	Int32	-

Load Net Module [82]

Client -> Server

Size	Description	Type	Notes
2	Module ID	Unsigned Short
??	Payload	??

Note: 82 is sent prior to chat packets in 1.3.5.x. Instructs the server to load a net module.

Set NPC Kill Count [83]

Server -> Client

Size	Description	Type	Notes
2	NPC Type	Int16	-
4	Kill Count	Int32	-

Set Player Stealth [84]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player	Byte	-
4	Stealth	Single	-

Force Item Into Nearest Chest [85]

Client -> Server

Size	Description	Type	Notes
1	Inventory Slot	Byte	-

Update Tile Entity [86]

Server -> Client

Size	Description	Type	Notes
4	TileEntityId	Int32	-
1	UpdateTileFlag	Boolean	If UpdateTileFlag is false, TileEntity is removed
1	TileEntity Type	Byte	Only sent if UpdateTileFlag is false
2	X	Int16	Only sent if UpdateTileFlag is false
2	Y	Int16	Only sent if UpdateTileFlag is false

Place Tile Entity [87]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	TileEntityType	Byte	2 = Logic Sensor 1 = Item Frame 0 = Training Dummy

Tweak Item (FKA. Alter Item Drop) [88]

Server -> Client

Size	Description	Type	Notes
2	Item Index	Int16	-
1	Flags1	Byte	BitFlags: 1 = Color, 2 = Damage, 4 = Knockback, 8 = UseAnimation, 16 = UseTime, 32 = Shoot, 64 = ShootSpeed, 128 = NextFlags
4	Packed Color Value	UInt32	if Flags1.Color
2	Damage	UInt16	if Flags1.Damage
4	Knockback	Single	if Flags1.Knockback
2	Use Animation	UInt16	if Flags1.UseAnimation
2	Use Time	UInt16	if Flags1.UseTime
2	Shoot	Int16	if Flags1.Shoot
4	ShootSpeed	Float	if Flags1.ShootSpeed
1	Flags2	Byte	if Flags1.NextFlags, BitFlags: 1 = Width, 2 = Height, 4 = Scale, 8 = Ammo, 16 = UseAmmo, 32 = NotAmmo
2	Width	Int16	if Flags2.Width
2	Height	Int16	if Flags2.Height
4	Scale	Float	if Flags2.Scale
2	Ammo	Int16	If Flags2.Ammo
2	UseAmmo	Int16	If Flags2.UseAmmo
1	NotAmmo	Bool	If Flags2.NotAmmo

Place Item Frame [89]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
2	ItemId	Int16	-
1	Prefix	Byte	-
2	Stack	Int16	-

Update Item Drop 2 [90]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	Item ID	Int16	If below 400 and NetID 0 Then Set NullIf ItemID is 400 Then New Item
4	Position X	Single	-
4	Position Y	Single	-
4	Velocity X	Single	-
4	Velocity Y	Single	-
2	Stack Size	Int16	-
1	Prefix	Byte	-
1	NoDelay	Byte	If 0 then ownIgnore = 0 and ownTime = 100
2	Item Net ID	Int16	-

Sync Emote Bubble [91]

Server -> Client

Size	Description	Type	Notes
4	Emote ID	Int32	-
1	Anchor Type	Byte	-
2	Player ID	UInt16	Only sent if AnchorType != 255
2	Emote LifeTime	UInt16	Only sent if AnchorType != 255
1	Emote	Byte	Only sent if AnchorType != 255
2	Emote MetaData	Int16	Only sent if AnchorType != 255 and Emote < 0

Sync Extra Value [92]

Server <-> Client (Sync)

Size	Description	Type	Notes
2	NPC Index	Int16	-
4	Extra Value	Int32	-
4	X	Single	-
4	Y	Single	-

Social Handshake [93]

Not used

Size	Description	Type	Notes

Deprecated [94]

Not used

Size	Description	Type	Notes

Kill Portal [95]

Client -> Server

Size	Description	Type	Notes
2	Projectile Owner	UInt16	-
1	Projectile AI	Byte	-

Player Teleport Portal [96]

Server <-> Client

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Portal Color Index	Int16	-
4	New Position X	Single	-
4	New Position Y	Single	-
4	Velocity X	Single	-
4	Velocity Y	Single	-

Notify Player NPC Killed [97]

Server -> Client

Size	Description	Type	Notes
2	NPC ID	Int16	-

Notify Player Of Event [98]

Server -> Client

Size	Description	Type	Notes
2	Event ID	Int16	-

Update Minion Target [99]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Target X	Single	-
4	Target Y	Single	-

NPC Teleport Portal [100]

Server <-> Client

Size	Description	Type	Notes
2	NPC ID	UInt16	-
2	Portal Color Index	Int16	-
4	New Position X	Single	-
4	New Position Y	Single	-
4	Velocity X	Single	-
4	Velocity Y	Single	-

Update Shield Strengths [101]

Server -> Client

Size	Description	Type	Notes
2	Solar Tower Shield Strength	UInt16	-
2	Vortex Tower Shield Strength	UInt16	-
2	Nebula Tower Shield Strength	UInt16	-
2	Stardust Tower Shield Strength	UInt16	-

Nebula Level Up [102]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Level Up Type	UInt16	-
4	Origin X	Single	In world coordinate pixels.
4	Origin Y	Single	In world coordinate pixels.

Moon Lord Countdown [103]

Server -> Client

Size	Description	Type	Notes
4	Moon Lord Countdown	Int32	-

NPC Shop Item [104]

Server -> Client

Size	Description	Type	Notes
1	Slot	Byte	-
2	Item Type	Int16	-
2	Stack	Int16	-
1	Prefix	Byte	-
4	Value	Int32	-
1	Flags	Byte	BitFlags: 1 = BuyOnce

Gem Lock Toggle [105]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
1	On	Boolean	-

Poof of Smoke [106]

Server -> Client

Size	Description	Type	Notes
4	PackedVector	UInt32	Two Int16's packed into 4 bytes.

Smart Text Message (FKA. Chat Message v2) [107]

Server -> Client

Size	Description	Type	Notes
3	Message Color	Color	Client cannot change colors
?	Message	NetworkText
2	Message Length	Int16

Wired Cannon Shot [108]

Server -> Client

Size	Description	Type	Notes
2	Damage	Int16	-
4	Knockback	Single	-
2	X	Int16	-
2	Y	Int16	-
2	Angle	Int16	-
2	Ammo	Int16	-
1	Player ID	Byte	Shooter's Player ID

Mass Wire Operation [109]

Client -> Server

Size	Description	Type	Notes
2	Start X	Int16	-
2	Start Y	Int16	-
2	End X	Int16	-
2	End Y	Int16	-
1	ToolMode	Byte	BitFlags: 1 = Red, 2 = Green, 4 = Blue, 8 = Yellow, 16 = Actuator, 32 = Cutter

Mass Wire Operation Consume [110]

Server -> Client

Size	Description	Type	Notes
2	Item Type	Int16	-
2	Quantity	Int16	-
1	Player ID	Byte	-

Toggle Birthday Party [111]

Client -> Server

Size	Description	Type	Notes

GrowFX [112]

Server <-> Client (Sync)

Size	Description	Type	Notes
1	EffectFlags	Byte	1 = Tree Growth Effects, 2 = Fairy Effects
4	X	Int32	-
4	Y	Int32	-
1	Height	Byte	-
2	Tree Gore	Int16	-

CrystalInvasionStart [113]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-

CrystalInvasionWipeAll [114]

Server -> Client

Size	Description	Type	Notes

MinionAttackTargetUpdate [115]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
2	Minion Attack Target	Int16	-

CrystalInvasionSendWaitTime [116]

Server -> Client

Size	Description	Type	Notes
4	Time Until Next Wave	Int32	1800 (30s) between waves, 30 (5s) when starting

PlayerHurtV2 [117]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
?	Player Death Reason	PlayerDeathReason	-
2	Damage	Int16	-
1	Hit Direction	Byte	-
1	Flags	Byte	BitFlags: 1 = Crit, 2 = PvP
1	Cooldown Counter	SByte	-

PlayerDeathV2 [118]

Client -> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
?	Player Death Reason	PlayerDeathReason	-
2	Damage	Int16	-
1	Hit Direction	Byte	-
1	Flags	Byte	BitFlags: 1 = PvP

CombatTextString [119]

Client <-> Server

Size	Description	Type	Notes
4	X	Single	-
4	Y	Single	-
3	Color	Color	-
?	Combat Text	NetworkText	-

Emoji [120]

Client <-> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
1	Emoticon	Byte	-

TEDisplayDollItemSync [121]

Client <-> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
4	TileEntity ID	Int32	-
1	Item Index	Byte	-
2	Item ID	UInt16	-
2	Stack	UInt16	-
1	Prefix	Byte	-

RequestTileEntityInteraction [122]

Client <-> Server

Size	Description	Type	Notes
4	TileEntityID	Int32	-
1	Player ID	Byte	-

WeaponsRackTryPlacing [123]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
2	Net ID	Int16	-
1	Prefix	Byte	-
2	Stack	Int16	-

TEHatRackItemSync [124]

Client <-> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
4	TileEntityID	Int32	-
1	Item Index	Byte	-
2	Item ID	UInt16	-
2	Stack	UInt16	-
1	Prefix	Byte	-

SyncTilePicking [125]

Client <-> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
2	X	Int16	-
2	Y	Int16	-
1	Pick Damage	Byte	-

SyncRevengeMarker [126]

Server -> Client

Size	Description	Type	Notes
4	Unique ID	Int32	-
4	X	Single	-
4	Y	Single	-
4	NPC ID	Int32	-
4	NPC HP Percent	Single	-
4	NPC Type	Int32	-
4	NPC AI	Int32	-
4	Coin Value	Int32	-
4	Base Value	Single	-
1	SpawnedFromStatue	Boolean	-

RemoveRevengeMarker [127]

Server -> Client

Size	Description	Type	Notes
4	Unique ID	Int32	-

LandGolfBallInCup [128]

Client <-> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
2	X	UInt16	-
2	Y	UInt16	-
2	Number of Hits	UInt16	-
2	Proj ID	UInt16	-

FinishedConnectingToServer [129]

Server -> Client

Size	Description	Type	Notes

FishOutNPC [130]

Client -> Server

Size	Description	Type	Notes
2	X	UInt16	-
2	Y	UInt16	-
2	NPC ID	Int16	-

TamperWithNPC [131]

Server -> Client

Size	Description	Type	Notes
2	NPC ID	UInt16	-
1	SetNPCImmunity	Byte	-
4	Immunity Time	Int32	Only sent if SetNPCImmunity flag is true
2	Immunity Player ID	Int16	Set to -1 for immunity from all players

PlayLegacySound [132]

Server -> Client

Size	Description	Type	Notes
4	X	Single	-
4	Y	Single	-
2	Sound ID	UInt16	-
1	Sound Flags	Byte	BitFlags: 1 = Style, 2 = Volume Scale, 3 = Pitch Offset

FoodPlatterTryPlacing [133]

Client -> Server

Size	Description	Type	Notes
2	X	Int16	-
2	Y	Int16	-
2	Item ID	Int16	-
1	Prefix	Byte	-
2	Stack	Int16	-

UpdatePlayerLuckFactors [134]

Client <-> Server

Size	Description	Type	Notes
1	Player ID	Byte	-
4	Ladybug Luck Time Remaining	Int32	-
4	Torch Luck	Single	-
1	Luck Potion	Byte	-
1	HasGardenGnomeNearby	Boolean	-

DeadPlayer [135]

Server -> Client

Size	Description	Type	Notes
1	Player ID	Byte	-

SyncCavernMonsterType [136]

Client <-> Server

Size	Description	Type	Notes
2	Net ID	UInt16	NPC.cavernMonsterType[0,0]
2	Net ID	UInt16	NPC.cavernMonsterType[0,1]
2	Net ID	UInt16	NPC.cavernMonsterType[0,2]
2	Net ID	UInt16	NPC.cavernMonsterType[1,0]
2	Net ID	UInt16	NPC.cavernMonsterType[1,1]
2	Net ID	UInt16	NPC.cavernMonsterType[1,2]

RequestNPCBuffRemoval [137]

Client -> Server

Size	Description	Type	Notes
2	NPC ID	Int16	-
2	Buff ID	UInt16	-

ClientSyncedInventory [138]

Never sent

Size	Description	Type	Notes

SetCountsAsHostForGameplay [139]

Server -> Client

Size	Description	Type	Notes
1	Player ID	Byte	-
1	CountsAsHost	Boolean	-