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PROTOCOL.md

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Bliep.io Protocol

Here is the protocol for the BliepProject.

Notice! This is not the diep.io protocol.

Clientbound Packets (server -> client)

Packet 0: Handshake Request

This packet is sent to the player immediately after they connect. If player does not respond with packet 1 within 10 seconds of sending this packet, they will be kicked.

Bytes Data Type Description
0 uint8 Packet Id
1 uint16 World Size

Packet 20: Init Player(s)

This packet is sent to the client when a new tank(s) enters the players viewing range or the player presses play. The client stores the information sent in this packet as information such as a tank's nickname or tank type will no longer be sent to the player for that tank.

Bytes Data Type Description
0 uint8 Packet Id
1 uint8 Player Count
2-? Player Data Data for all players

Player Data

Data Type Description
uint32 Player's Id (0=you)
uint16 Player's Nickname (charcode)
uint16 Marks End of Nick (always 0)
uint32 Player's Score
uint8 Tank Type Id

Packet 21: Forget Player(s)

This is packet is sent to the client when a player disconnects and must be removed from the canvas.

Bytes Data Type Description
0 uint8 Packet Id
1 uint8 Player Count
2-? uint32 Player's Id

Packet 25: Update Player(s) Score, Position, Bullets

This packet is sent to the client 30 times per second. It contains the new score and position/rotation of the player and other players in the viewing range and the players bullets location. UPDATE: This packet is no longer being used for bullets, instead see packet 35.

Bytes Data Type Description
0 uint8 Packet Id
1 uint8 Player Count
2-? Player Update Data New data for players

Player Update Data

Data Type Description
uint32 Player's Id (0=you)
uint32 Player's Score
int32 Player's Position X
int32 Player's Position Y
uint16 Player's Rotation (!you)
uint8 Player's Bullet Count
Bullet Data Data for Player's Bullet

Bullet Data

Data Type Description
uint8 Bullet Type Id
int32 Bullet's Position X
int32 Bullet's Position Y

Packet 30: Add Food

This packet is sent to the client when new food is spawned in.

Bytes Data Type Description
0 uint8 Packet Id
1 uint16 Food Count
2-? Food Data Data for all food

Food Data

Data Type Description
uint8 Food Type Id
int32 Food Position X
int32 Food Position Y

Packet 35: Spawn Player Bullet(s)

This packet is sent to the client after packet 25 if there are any bullets which are unknown to the client, fired by the client's known players. The packet is only sent once for each bullet, but contains lots of information to aid the client in locally calculating and rendering bullets and their movement.

Bytes Data Type Description
0 uint8 Packet Id
1 uint16 Server Time (part 1)
3 uint32 Server Time (part 2)
7 uint8 Bullet Count
7-? Bullet Data2 Bullet Data

Bullet Data2

| uint32 | Owner's Id (0=yours) | | uint8 | Bullet Type Id | | float32 | Bullet Speed | | uint16 | Bullet Aim Angle | | int32 | Bullet Start Position X | | int32 | Bullet Stop Position Y | | uint16 | Bullet Life |

Serverbound Packets (client -> server)

Packet 1: Handshake

This packet is sent after receiving packet 0 from server.

Bytes Data Type Description
0 uint8 Packet Id
1 uint8 Protocol Version

Packet 2: Heartbeat

This packet is sent every second to keep the connection alive.

Bytes Data Type Description
0 uint8 Packet Id

Packet 10: Set Nickname & Play

This packet is sent when the player presses enter on the menu screen to play.

Bytes Data Type Description
0 uint8 Packet Id
1-? uint16 Player's Nickname (charcode)
? uint16 Marks End of Nick (always 0)

Packet 50: Mouse Move

This packet is sent when the player moves their mouse.

Bytes Data Type Description
0 uint8 Packet Id
1 uint16 Mouse angle in Degrees

Packet 51: Movement key press

This packet is sent when a WASD key is pressed or released.

Bytes Data Type Description
0 uint8 Packet Id
1 uint8 W Key State
2 uint8 A Key State
3 uint8 S Key State
4 uint8 D Key State

Packet 52: Fire Bullet

This packet is sent when the tanks needs to start or stop firing bullets.

Bytes Data Type Description
0 uint8 Packet Id
1 uint8 Fire Bullets