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| − | This page documents the changes from the [[Protocol|last stable Minecraft release]] (currently 1.5.2, protocol 61) to the current pre-release, 13w17a (protocol 64). Note that this page contains bleeding-edge information that may not be completely or correctly documented.
| + | There is currently a pre-release version available: 1.21-pre2, but it has not yet been documented. For the latest stable Minecraft release, see the [[Protocol|Protocol]] page. For previous pre-release pages, see the [[Protocol version numbers|Protocol version numbers]] page. |
| | | | |
| − | He who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occured to the respective packets there.
| + | One who wishes to commandeer the merging of this into [[Protocol]] when an update is made must be sure to respect any changes that may have occurred to the respective packets there. |
| | | | |
| − | == Protocol Version == | + | == Contents == |
| | | | |
| − | As of 13w22a the protocol version is 67.
| + | <div style="float:right;">__TOC__</div> |
| | | | |
| − | == New Packets == | + | === Data types === |
| | | | |
| − | {{anchor|0x1B}}
| + | No changes so far. |
| − | === Steer Vehicle (0x1B) ===
| |
| − | ''Client to Server''
| |
| | | | |
| − | Sent by client to steer the horse, minecart and boats.
| + | === Packets === |
| − | Horses listen to all directions, boats and minecarts only listen to the positive forward value in combination with the direction the player is looking in.
| |
| | | | |
| − | {| class="wikitable"
| + | No changes so far. |
| − | |-
| |
| − | | Packet ID
| |
| − | | Field Name
| |
| − | | Field Type
| |
| − | | Example
| |
| − | | Notes
| |
| − | |-
| |
| − | | rowspan="4" | 0x1B
| |
| − | | Sideways
| |
| − | | float
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| − | | 0.98
| |
| − | | Positive to the left of the player
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| − | |-
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| − | | Forward
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| − | | float
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| − | | -0.98
| |
| − | | Positive forward
| |
| − | |-
| |
| − | | Jump
| |
| − | | bool
| |
| − | | true
| |
| − | |
| |
| − | |-
| |
| − | | Unmount
| |
| − | | bool
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| − | | false
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| − | | True when leaving the vehicle
| |
| − | |-
| |
| − | | Total Size:
| |
| − | | colspan="4" | 11 bytes
| |
| − | |}
| |
| | | | |
| − | {{anchor|0x2C}}
| + | [[Category:Minecraft Modern]] |
| − | === Entity Properties (0x2C) ===
| |
| − | ''Server to Client''
| |
| − | | |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | | Packet ID
| |
| − | | Field Name
| |
| − | | Field Type
| |
| − | | Example
| |
| − | | Notes
| |
| − | |-
| |
| − | | rowspan="6" | 0x2C
| |
| − | | EntityID
| |
| − | | int
| |
| − | | 195
| |
| − | | ?
| |
| − | |-
| |
| − | | Properties Count
| |
| − | | int
| |
| − | | 3
| |
| − | | Number of string/data pairs that follow. The remaining fields here are repeated this number of times.
| |
| − | |-
| |
| − | | Key
| |
| − | | string16
| |
| − | | "generic.Maxhealth"
| |
| − | |
| |
| − | |-
| |
| − | | Value
| |
| − | | double
| |
| − | | 20.0
| |
| − | |
| |
| − | |-
| |
| − | | Total Size:
| |
| − | | colspan="4" | ? bytes
| |
| − | |}
| |
| − | | |
| − | Known values:
| |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | | Key
| |
| − | | Default
| |
| − | | Min
| |
| − | | Max
| |
| − | | Label
| |
| − | |-
| |
| − | | generic.maxHealth
| |
| − | | 20.0
| |
| − | | 0.0
| |
| − | | Double.MaxValue
| |
| − | | Max Health
| |
| − | |-
| |
| − | | generic.followRange
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| − | | 32.0
| |
| − | | 0.0
| |
| − | | 2048.0
| |
| − | | Follow Range
| |
| − | |-
| |
| − | | generic.knockbackResistance
| |
| − | | 0.0
| |
| − | | 0.0
| |
| − | | 1.0
| |
| − | | Knockback Resistance
| |
| − | |-
| |
| − | | generic.movementSpeed
| |
| − | | 0.699999988079071
| |
| − | | 0.0
| |
| − | | Double.MaxValue
| |
| − | | Movement Speed
| |
| − | |-
| |
| − | | generic.attackDamage
| |
| − | | 2.0
| |
| − | | 0.0
| |
| − | | Double.MaxValue
| |
| − | |
| |
| − | |-
| |
| − | | horse.jumpStrength
| |
| − | | 0.7
| |
| − | | 0.0
| |
| − | | 2.0
| |
| − | | Jump Strength
| |
| − | |-
| |
| − | | zombie.spawnReinforcements
| |
| − | | 0.0
| |
| − | | 0.0
| |
| − | | 1.0
| |
| − | | Spawn Reinforcements Chance
| |
| − | |}
| |
| − | | |
| − | == Changed Packets ==
| |
| − | | |
| − | {{anchor|0x03}}
| |
| − | === Chat Message (0x03) ===
| |
| − | | |
| − | ''Client to Server''
| |
| − | | |
| − | Unchanged
| |
| − | | |
| − | ''Server to Client''
| |
| − | | |
| − | The chat string must now be a valid JSON object:
| |
| − | | |
| − | {"translate":"chat.type.announcement","using":["Server","hi"]}
| |
| − | {"color":"gray","italic":true,"translate":"chat.type.admin","using":["Server",{"translate":"commands.save.success"}]}
| |
| − | {"text":"§aOld style chat"}
| |
| − | [https://gist.github.com/Dinnerbone/5631634 Original Gist from Dinnerbone] | |
| − | | |
| − | Where translate is one of the following:
| |
| − | | |
| − | chat.type.admin: [%s: %s]
| |
| − | chat.type.announcement: [%s] %s
| |
| − | chat.type.emote: * %s %s
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| − | chat.type.text: <%s> %s
| |
| − | | |
| − | {{anchor|0x08}}
| |
| − | | |
| − | === Update Health (0x08) ===
| |
| − | ''Server to Client''
| |
| − | | |
| − | Sent by the server to update/set the health of the player it is sent to. Added in protocol version 5.
| |
| − | | |
| − | Food saturation acts as a food "overcharge". Food values will not decrease while the saturation is over zero. Players logging in automatically get a saturation of 5.0. Eating food increases the saturation as well as the food bar.
| |
| − | | |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | | Packet ID
| |
| − | | Field Name
| |
| − | | Field Type
| |
| − | | Example
| |
| − | | Notes
| |
| − | |-
| |
| − | | rowspan="3" | 0x08
| |
| − | | Health
| |
| − | | '''float'''
| |
| − | | '''20.0'''
| |
| − | | 0 or less = dead, 20 = full HP
| |
| − | |-
| |
| − | | Food
| |
| − | | short
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| − | | 20
| |
| − | | 0 - 20
| |
| − | |-
| |
| − | | Food Saturation
| |
| − | | float
| |
| − | | 5.0
| |
| − | | Seems to vary from 0.0 to 5.0 in integer increments
| |
| − | |-
| |
| − | | Total Size:
| |
| − | | colspan="4" | 11 bytes
| |
| − | |}
| |
| − | | |
| − | {{anchor|0x13}}
| |
| − | === Entity Action (0x13) ===
| |
| − | ''Client to Server''
| |
| − | | |
| − | Sent at least when crouching, leaving a bed, or sprinting.
| |
| − | To send action animation to client use 0x28.
| |
| − | The client will send this with Action ID = 3 when "Leave Bed" is clicked.
| |
| − | | |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | | Packet ID
| |
| − | | Field Name
| |
| − | | Field Type
| |
| − | | Example
| |
| − | | Notes
| |
| − | |-
| |
| − | | rowspan="3" | 0x13
| |
| − | | EID
| |
| − | | int
| |
| − | | <code>55534</code>
| |
| − | | Player ID
| |
| − | |-
| |
| − | | Action ID
| |
| − | | byte
| |
| − | | <code>1</code>
| |
| − | | The ID of the action, see below.
| |
| − | |-
| |
| − | | '''Unknown'''
| |
| − | | int
| |
| − | | <code>0</code>
| |
| − | | Something to do with horses. Ranged from 0 -> 90
| |
| − | |-
| |
| − | | Total Size:
| |
| − | | colspan="4" | 10 bytes
| |
| − | |}
| |
| − | | |
| − | Action ID can be one of the following values:
| |
| − | | |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | ! ID
| |
| − | ! Action
| |
| − | |-
| |
| − | | 1
| |
| − | | Crouch
| |
| − | |-
| |
| − | | 2
| |
| − | | Uncrouch
| |
| − | |-
| |
| − | | 3
| |
| − | | Leave bed
| |
| − | |-
| |
| − | | 4
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| − | | Start sprinting
| |
| − | |-
| |
| − | | 5
| |
| − | | Stop sprinting
| |
| − | |}
| |
| − | | |
| − | {{anchor|0x27}}
| |
| − | === Attach Entity (0x27) ===
| |
| − | ''Server to Client''
| |
| − | | |
| − | This packet is sent when a player has been attached to an entity (e.g. Minecart)
| |
| − | | |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | | Packet ID
| |
| − | | Field Name
| |
| − | | Field Type
| |
| − | | Example
| |
| − | | Notes
| |
| − | |-
| |
| − | | rowspan="3" | 0x27
| |
| − | | Entity ID
| |
| − | | int
| |
| − | | <code>1298</code>
| |
| − | | The player entity ID being attached
| |
| − | |-
| |
| − | | Vehicle ID
| |
| − | | int
| |
| − | | <code>1805</code>
| |
| − | | The vehicle entity ID attached to (-1 for unattaching)
| |
| − | |-
| |
| − | | '''Leash'''
| |
| − | | boolean
| |
| − | | <code>false</code>
| |
| − | | If set to true, leashes the entity to the vehicle
| |
| − | |-
| |
| − | | Total Size:
| |
| − | | colspan="4" | 10 bytes
| |
| − | |}
| |
| − | | |
| − | {{anchor|0xCA}}
| |
| − | === Player Abilities (0xCA) ===
| |
| − | ''Two-Way''
| |
| − | | |
| − | The latter 2 bytes are used to indicate the walking and flying speeds respectively, while the first byte is used to determine the value of 4 booleans.
| |
| − |
| |
| − | The flags are whether damage is disabled (god mode, 8, bit 3), whether the player can fly (4, bit 2), whether the player is flying (2, bit 1), and whether the player is in creative mode (1, bit 0).
| |
| − |
| |
| − | To get the values of these booleans, simply AND (&) the byte with 1,2,4 and 8 respectively, to get the 0 or 1 bitwise value. To set them OR (|) them with their repspective masks.
| |
| − | The vanilla client sends this packet when the player starts/stops flying with the second parameter changed accordingly. All other parameters are ignored by the vanilla server.
| |
| − | | |
| − | {| class="wikitable"
| |
| − | |-
| |
| − | | Packet ID
| |
| − | | Field Name
| |
| − | | Field Type
| |
| − | | Example
| |
| − | | Notes
| |
| − | |-
| |
| − | | rowspan="3" | 0xCA
| |
| − | | Flags
| |
| − | | byte
| |
| − | | 5
| |
| − | |
| |
| − | |-
| |
| − | | Flying speed
| |
| − | | '''float'''
| |
| − | | '''0.05'''
| |
| − | | previous integer value divided by 250
| |
| − | |-
| |
| − | | Walking speed
| |
| − | | '''float'''
| |
| − | | '''0.1'''
| |
| − | | previous integer value divided by 250
| |
| − | |-
| |
| − | | Total Size:
| |
| − | | colspan="4" | 10 bytes
| |
| − | |}
| |
| − | | |
| − | == Removed Packets ==
| |
| − | | |
| − | -None-
| |
| − | | |
| − | == Changed Data Types ==
| |
| − | | |
| − | -None-
| |
| − | | |
| − | == Protocol History ==
| |
| − | | |
| − | -None-
| |
