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README.md

libmc

A lightweight minecraft client-side protocol library for Kotlin Native and JVM

Supported targets

Platform Target Support Tier
Java JVM 1.8 Mainly Supported
Windows MinGW X64 Mainly Supported
Linux Linux X64 Mainly Supported
Linux ARM64 Not Tested
macOS macOS ARM64 (Silicon) Not Tested

Get started

LibMC Document

Minecraft Protocol Library Status

Unimplemented

  • Chunk & World Data: Level Chunk Data with Light decoder (Paletted Containers, Direct/Indirect Palettes)
  • Light Engine Update: Sky & Block light nibble array parser
  • Debug Packets Parsing: Debug subs, block/entity states, and game performance sample events

Encryption was implemented

Protocol Packet Codecs Mapping

Click to expand

1. Status Stage

Clientbound

  • 0x00 Status Response (ClientboundStatusResponsePacket)
  • 0x01 Pong Response (ClientboundPongResponsePacket)

Serverbound

  • 0x00 Status Request (ServerboundStatusRequestPacket)
  • 0x01 Ping Request (ServerboundPingRequestPacket)

2. Handshake Stage

Serverbound

  • 0x00 Handshake (ServerboundHandshakePacket)

3. Login Stage

Clientbound

  • 0x00 Disconnect (ClientboundDisconnectLoginPacket)
  • 0x01 Encryption Request (ClientboundHelloPacket)
  • 0x02 Login Success (ClientboundLoginSuccessPacket)
  • 0x03 Set Compression (ClientboundSetCompressionPacket)
  • 0x04 Login Plugin Request (ClientboundCustomQueryPacket)
  • 0x05 Cookie Request (ClientboundCookieRequestPacket)

Serverbound

  • 0x00 Login Start (ServerboundLoginStartPacket)
  • 0x01 Encryption Response (ServerboundKeyPacket)
  • 0x02 Login Plugin Response (ServerboundCustomQueryAnswerPacket)
  • 0x03 Login Acknowledged (ServerboundLoginAcknowledgedPacket)
  • 0x04 Cookie Response (ServerboundCookieResponsePacket)

4. Configuration Stage

Clientbound

  • 0x00 Cookie Request (ClientboundCookieRequestPacket)
  • 0x01 Custom Payload (ClientboundCustomPayloadPacket)
  • 0x02 Disconnect (ClientboundDisconnectConfigurationPacket)
  • 0x03 Finish Configuration (ClientboundFinishConfigurationPacket)
  • 0x04 Keep Alive (ClientboundKeepAliveConfigurationPacket)
  • 0x05 Ping (ClientboundPingConfigurationPacket)
  • 0x06 Reset Chat (ClientboundResetChatPacket)
  • 0x07 Registry Data (ClientboundRegistryDataPacket)
  • 0x08 Remove Resource Pack (ClientboundRemoveResourcePackPacket)
  • 0x09 Add Resource Pack (ClientboundAddResourcePackPacket)
  • 0x0A Store Cookie (ClientboundStoreCookiePacket)
  • 0x0B Transfer (ClientboundTransferPacket)
  • 0x0C Update Enabled Features (ClientboundUpdateEnabledFeaturesPacket)
  • 0x0D Update Tags (ClientboundUpdateTagsPacket)
  • 0x0E Select Known Packs (ClientboundSelectKnownPacksPacket)
  • 0x0F Custom Report Details (ClientboundCustomReportDetailsPacket)
  • 0x10 Server Links (ClientboundServerLinksPacket)
  • 0x11 Clear Dialog (ClientboundClearDialogPacket)
  • 0x12 Show Dialog (ClientboundConfigurationShowDialogPacket)
  • 0x13 Code Of Conduct (ClientboundCodeOfConductPacket)

Serverbound

  • 0x00 Client Information (ServerboundCookieResponsePacket)
  • 0x01 Cookie Response (ServerboundCookieResponsePacket)
  • 0x02 Plugin Message (ServerboundCustomPayloadPacket)
  • 0x03 Finish Configuration Acknowledged (ServerboundAckFinishConfigurationPacket)
  • 0x04 Keep Alive Response (ServerboundKeepAliveConfigurationPacket)
  • 0x05 Pong Response (ServerboundPongConfigurationPacket)
  • 0x07 Select Known Packs (ServerboundSelectKnownPacksPacket)
  • 0x08 Custom Click Action (ServerboundCustomClickActionPacket)
  • 0x09 Accept Code Of Conduct (ServerboundAcceptCodeOfConductPacket)

5. Play Stage

Clientbound

  • 0x00 Delimiter (ClientboundDelimiterPacket)
  • 0x01 Spawn Entity (ClientboundSpawnEntityPacket)
  • 0x02 Entity Animation (ClientboundEntityAnimationPacket)
  • 0x03 Award Statistics (ClientboundAwardStatisticsPacket)
  • 0x04 Acknowledge Block Change (ClientboundAcknowledgeBlockChangePacket)
  • 0x05 Block Destruction (ClientboundBlockDestructionPacket)
  • 0x06 Block Entity Data (ClientboundBlockEntityDataPacket)
  • 0x07 Block Event (ClientboundBlockEventPacket)
  • 0x08 Block Update (ClientboundBlockUpdatePacket)
  • 0x09 Boss Event (ClientboundBossEventPacket)
  • 0x0A Change Difficulty (ClientboundChangeDifficultyPacket)
  • 0x0B Chunk Batch Finished (ClientboundChunkBatchFinishedPacket)
  • 0x0C Chunk Batch Start (ClientboundChunkBatchStartPacket)
  • 0x0D Chunks Biomes (ClientboundChunksBiomesPacket)
  • 0x0E Clear Titles (ClientboundClearTitlesPacket)
  • 0x0F Command Suggestions (ClientboundCommandSuggestionsPacket)
  • 0x10 Commands (ClientboundCommandsPacket)
  • 0x11 Container Close (ClientboundContainerClosePacket)
  • 0x12 Container Set Content (ClientboundContainerSetContentPacket)
  • 0x13 Container Set Data (ClientboundContainerSetDataPacket)
  • 0x14 Container Set Slot (ClientboundContainerSetSlotPacket)
  • 0x15 Cookie Request (ClientboundCookieRequestPacket)
  • 0x16 Cooldown (ClientboundCooldownPacket)
  • 0x17 Custom Chat Completions (ClientboundCustomChatCompletionsPacket)
  • 0x18 Custom Payload (ClientboundCustomPayloadPacket)
  • 0x19 Damage Event (ClientboundDamageEventPacket)
  • 0x1A Debug Block Value (ClientboundDebugBlockValuePacket)
  • 0x1B Debug Chunk Value (ClientboundDebugChunkValuePacket)
  • 0x1C Debug Entity Value (ClientboundDebugEntityValuePacket)
  • 0x1D Debug Event (ClientboundDebugEventPacket)
  • 0x1E Debug Sample (ClientboundDebugSamplePacket)
  • 0x1F Delete Chat (ClientboundDeleteChatPacket)
  • 0x20 Disconnect (ClientboundDisconnectPlayPacket)
  • 0x21 Disguised Chat Message (ClientboundDisguisedChatMessagePacket)
  • 0x22 Entity Event (ClientboundEntityEventPacket)
  • 0x23 Teleport Entity (ClientboundTeleportEntityPacket)
  • 0x24 Explode (ClientboundExplodePacket)
  • 0x25 Unload Chunk (ClientboundUnloadChunkPacket)
  • 0x26 Game Event (ClientboundGameEventPacket)
  • 0x27 Game Rule Values (ClientboundGameRuleValuesPacket)
  • 0x28 Test Highlight Position (ClientboundTestHighlightPositionPacket)
  • 0x29 Open Horse Screen (ClientboundOpenHorseScreenPacket)
  • 0x2A Hurt Animation (ClientboundHurtAnimationPacket)
  • 0x2B Initialize World Border (ClientboundInitializeWorldBorderPacket)
  • 0x2C Keep Alive (ClientboundKeepAlivePlayPacket)
  • 0x2D Level Chunk Update With Light (ClientboundLevelChunkUpdateWithLightPacket)
  • 0x2E Level Event (ClientboundLevelEventPacket)
  • 0x2F Particle (ClientboundLevelParticlePacket)
  • 0x30 Light Update (ClientboundLightUpdatePacket)
  • 0x31 Login Play (ClientboundLoginPlayPacket)
  • 0x32 Low Disk Space Warning (ClientboundLowDiskSpaceWarningPacket)
  • 0x33 Map Item Data (ClientboundMapItemDataPacket)
  • 0x34 Merchant Offers (ClientboundMerchantOffersPacket)
  • 0x35 Update Entity Position (ClientboundUpdateEntityPositionPacket)
  • 0x36 Update Entity Position and Rotation (ClientboundUpdateEntityPositionAndRotationPacket)
  • 0x37 Move Minecart Along Track (ClientboundMoveMinecartAlongTrackPacket)
  • 0x38 Update Entity Rotation (ClientboundUpdateEntityRotationPacket)
  • 0x39 Move Vehicle (ClientboundMoveVehiclePacket)
  • 0x3A Open Book (ClientboundOpenBookPacket)
  • 0x3B Open Screen (ClientboundOpenScreenPacket)
  • 0x3C Open Sign Editor (ClientboundOpenSignEditorPacket)
  • 0x3D Ping (ClientboundPingPacket)
  • 0x3E Pong Response (ClientboundPongResponsePacket)
  • 0x3F Place Ghost Recipe (ClientboundPlaceGhostRecipePacket)
  • 0x40 Player Abilities (ClientboundPlayerAbilitiesPacket)
  • 0x41 Player Chat Message (ClientboundPlayerChatMessagePacket)
  • 0x42 Player End Combat (ClientboundPlayerEndCombatPacket)
  • 0x43 Player Enter Combat (ClientboundPlayerEnterCombatPacket)
  • 0x44 Player Combat Death (ClientboundPlayerCombatDeathPacket)
  • 0x45 Player Info Remove (ClientboundPlayerInfoRemovePacket)
  • 0x46 Player Info Update (ClientboundPlayerInfoUpdatePacket)
  • 0x47 Player Look At (ClientboundPlayerLookAtPacket)
  • 0x48 Synchronize Player Position (ClientboundSynchronizePlayerPositionPacket)
  • 0x49 Player Rotation (ClientboundPlayerRotationPacket)
  • 0x4A Recipe Book Add (ClientboundRecipeBookAddPacket)
  • 0x4B Recipe Book Remove (ClientboundRecipeBookRemovePacket)
  • 0x4C Recipe Book Settings (ClientboundRecipeBookSettingsPacket)
  • 0x4D Remove Entities (ClientboundRemoveEntitiesPacket)
  • 0x4E Remove Entity Effect (ClientboundRemoveEntityEffectPacket)
  • 0x4F Reset Score (ClientboundResetScorePacket)
  • 0x50 Remove Resource Pack (ClientboundRemoveResourcePackPacket)
  • 0x51 Add Resource Pack (ClientboundAddResourcePackPacket)
  • 0x52 Respawn (ClientboundRespawnPacket)
  • 0x53 Set Head Rotation (ClientboundSetHeadRotationPacket)
  • 0x54 Update Section Block (ClientboundUpdateSectionBlockPacket)
  • 0x55 Select Advancements Tab (ClientboundSelectAdvancementsTabPacket)
  • 0x56 Server Data (ClientboundServerDataPacket)
  • 0x57 Set Action Bar Text (ClientboundSetActionBarTextPacket)
  • 0x58 Set Border Center (ClientboundSetBorderCenterPacket)
  • 0x59 Set Border Leap Size (ClientboundSetBorderLeapSizePacket)
  • 0x5A Set Border Size (ClientboundSetBorderSizePacket)
  • 0x5B Set Border Warning Delay (ClientboundSetBorderWarningDelayPacket)
  • 0x5C Set Border Warning Distance (ClientboundSetBorderWarningDistancePacket)
  • 0x5D Set Camera (ClientboundSetCameraPacket)
  • 0x5E Set Center Chunk (ClientboundSetCenterChunkPacket)
  • 0x5F Set Render Distance (ClientboundSetRenderDistancePacket)
  • 0x60 Set Cursor Item (ClientboundSetCursorItemPacket)
  • 0x61 Set Default Spawn Position (ClientboundSetDefaultSpawnPositionPacket)
  • 0x62 Set Display Objective (ClientboundSetDisplayObjectivePacket)
  • 0x63 Set Entity Metadata (ClientboundSetEntityMetadataPacket)
  • 0x64 Link Entities (ClientboundLinkEntitiesPacket)
  • 0x65 Set Entity Velocity (ClientboundSetEntityVelocityPacket)
  • 0x66 Set Equipment (ClientboundSetEquipmentPacket)
  • 0x67 Set Experience (ClientboundSetExperiencePacket)
  • 0x68 Set Health (ClientboundSetHealthPacket)
  • 0x69 Set Carried Item (ClientboundSetCarriedItemPacket)
  • 0x6A Update Objective (ClientboundUpdateObjectivePacket)
  • 0x6B Set Passengers (ClientboundSetPassengersPacket)
  • 0x6C Set Player Inventory Slot (ClientboundSetPlayerInventorySlotPacket)
  • 0x6D Set Player Team (ClientboundSetPlayerTeamPacket)
  • 0x6E Update Score (ClientboundUpdateScorePacket)
  • 0x6F Set Simulation Distance (ClientboundSetSimulationDistancePacket)
  • 0x70 Set Subtitle Text (ClientboundSetSubtitleTextPacket)
  • 0x71 Set Time (ClientboundSetTimePacket)
  • 0x72 Set Title Text (ClientboundSetTitleTextPacket)
  • 0x73 Set Title Animation Times (ClientboundSetTitleAnimationTimesPacket)
  • 0x74 Entity Sound Effect (ClientboundEntitySoundEffectPacket)
  • 0x75 Sound Effect (ClientboundSoundEffectPacket)
  • 0x76 Start Configuration (ClientboundStartConfigurationPacket)
  • 0x77 Stop Sound (ClientboundStopSoundPacket)
  • 0x78 Store Cookie (ClientboundStoreCookiePacket)
  • 0x79 System Chat Message (ClientboundSystemChatMessagePacket)
  • 0x7A Set Tab List Header And Footer (ClientboundSetTabListHeaderAndFooterPacket)
  • 0x7B Tag Query Response (ClientboundTagQueryResponsePacket)
  • 0x7C Pickup Item (ClientboundPickupItemPacket)
  • 0x7D Synchronize Vehicle Position (ClientboundSynchronizeVehiclePositionPacket)
  • 0x7E Test Instance Block Status (ClientboundTestInstanceBlockStatusPacket)
  • 0x7F Set Ticking State (ClientboundSetTickingStatePacket)
  • 0x80 Step Tick (ClientboundStepTickPacket)
  • 0x81 Transfer (ClientboundTransferPacket)
  • 0x82 Update Advancements (ClientboundUpdateAdvancementsPacket)
  • 0x83 Update Attributes (ClientboundUpdateAttributesPacket)
  • 0x84 Entity Effect (ClientboundEntityEffectPacket)
  • 0x85 Update Recipes (ClientboundUpdateRecipesPacket)
  • 0x86 Update Tags (ClientboundUpdateTagsPacket)
  • 0x87 Projectile Power (ClientboundProjectilePowerPacket)
  • 0x88 Custom Report Details (ClientboundCustomReportDetailsPacket)
  • 0x89 Server Links (ClientboundServerLinksPacket)
  • 0x8A Waypoint (ClientboundWaypointPacket)
  • 0x8B Clear Dialog (ClientboundClearDialogPacket)
  • 0x8C Show Dialog (ClientboundShowDialogPacket)

Serverbound

  • 0x00 Accept Teleportation (ServerboundAcceptTeleportationPacket)
  • 0x01 Attack Action (ServerboundAttackActionPacket)
  • 0x02 Query Block Entity Tag (ServerboundQueryBlockEntityTagPacket)
  • 0x03 Bundle Item Selected (ServerboundBundleItemSelectedPacket)
  • 0x04 Change Difficulty (ServerboundChangeDifficultyPacket)
  • 0x05 Change Game Mode (ServerboundChangeGameModePacket)
  • 0x06 Acknowledge Chat Message (ServerboundAcknowledgeChatMessagePacket)
  • 0x07 Chat Command (ServerboundChatCommandPacket)
  • 0x08 Signed Chat Command (ServerboundSignedChatCommandPacket)
  • 0x09 Chat Message (ServerboundChatMessagePacket)
  • 0x0A Update Chat Session (ServerboundUpdateChatSessionPacket)
  • 0x0B Chunk Batch Received (ServerboundChunkBatchReceivedPacket)
  • 0x0C Client Command (ServerboundClientCommandPacket)
  • 0x0D Client Tick End (ServerboundClientTickEndPacket)
  • 0x0E Client Information (ServerboundClientInformationPacket)
  • 0x0F Command Suggestion Request (ServerboundCommandSuggestionRequestPacket)
  • 0x10 Configuration Acknowledged (ServerboundConfigurationAcknowledgedPacket)
  • 0x11 Container Click Button (ServerboundContainerClickButtonPacket)
  • 0x12 Container Click (ServerboundContainerClickPacket)
  • 0x13 Container Close (ServerboundContainerClosePacket)
  • 0x14 Change Container Slot State (ServerboundChangeContainerSlotStatePacket)
  • 0x15 Cookie Response (ServerboundCookieResponsePacket)
  • 0x16 Custom Payload (ServerboundCustomPayloadPacket)
  • 0x17 Debug Subscription Request (ServerboundDebugSubscriptionRequestPacket)
  • 0x18 Edit Book (ServerboundEditBookPacket)
  • 0x19 Query Entity Tag (ServerboundQueryEntityTagPacket)
  • 0x1A Interact (ServerboundInteractPacket)
  • 0x1B Jigsaw Generate (ServerboundJigsawGeneratePacket)
  • 0x1C Keep Alive (ServerboundKeepAlivePlayPacket)
  • 0x1D Lock Difficulty (ServerboundLockDifficultyPacket)
  • 0x1E Set Player Position (ServerboundSetPlayerPositionPacket)
  • 0x1F Set Player Position and Rotation (ServerboundSetPlayerPositionAndRotationPacket)
  • 0x20 Set Player Rotation (ServerboundSetPlayerRotationPacket)
  • 0x21 Set Player Movement Flag (ServerboundSetPlayerMovementFlagPacket)
  • 0x22 Move Vehicle (ServerboundMoveVehiclePacket)
  • 0x23 Paddle Boat (ServerboundPaddleBoatPacket)
  • 0x24 Pick Item From Block (ServerboundPickItemFromBlockPacket)
  • 0x25 Pick Item From Entity (ServerboundPickItemFromEntityPacket)
  • 0x26 Ping Request (ServerboundPingRequestPacket)
  • 0x27 Place Recipe (ServerboundPlaceRecipePacket)
  • 0x28 Player Abilities (ServerboundPlayerAbilitiesPacket)
  • 0x29 Player Action (ServerboundPlayerActionPacket)
  • 0x2A Player Command (ServerboundPlayerCommandPacket)
  • 0x2B Player Input (ServerboundPlayerInputPacket)
  • 0x2C Player Loaded (ServerboundPlayerLoadedPacket)
  • 0x2D Pong (ServerboundPongPlayPacket)
  • 0x2E Recipe Book Change Settings (ServerboundRecipeBookChangeSettingsPacket)
  • 0x2F Recipe Book Seen Recipe (ServerboundRecipeBookSeenRecipePacket)
  • 0x30 Rename Item (ServerboundRenameItemPacket)
  • 0x31 Resource Pack Response (ServerboundResourcePackResponsePacket)
  • 0x32 Seen Advancements (ServerboundSeenAdvancementsPacket)
  • 0x33 Select Trade (ServerboundSelectTradePacket)
  • 0x34 Set Beacon (ServerboundSetBeaconPacket)
  • 0x35 Set Carried Item (ServerboundSetCarriedItemPacket)
  • 0x36 Set Command Block (ServerboundSetCommandBlockPacket)
  • 0x37 Set Command Minecart (ServerboundSetCommandMinecartPacket)
  • 0x38 Set Creative Mode Slot (ServerboundSetCreativeModeSlotPacket)
  • 0x39 Set Game Rule (ServerboundSetGameRulePacket)
  • 0x3A Set Jigsaw Block (ServerboundSetJigsawBlockPacket)
  • 0x3B Set Structure Block (ServerboundSetStructureBlockPacket)
  • 0x3C Set Test Block (ServerboundSetTestBlockPacket)
  • 0x3D Sign Update (ServerboundSignUpdatePacket)
  • 0x3E Spectator Action (ServerboundSpectatorActionPacket)
  • 0x3F Swing (ServerboundSwingPacket)
  • 0x40 Teleport To Entity (ServerboundTeleportToEntityPacket)
  • 0x41 Test Instance Block Action (ServerboundTestInstanceBlockActionPacket)
  • 0x42 Use Item On (ServerboundUseItemOnPacket)
  • 0x43 Use Item (ServerboundUseItemPacket)
  • 0x44 Custom Click Action (ServerboundCustomClickActionPacket)

Open Source

Licensed under Apache-2.0

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Description
Lightweight Minecraft client-side protocol library for Kotlin Multiplatform and JVM
clientkotlinminecraftmultiplatformnativetcp
Readme Apache-2.0
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Languages
Kotlin 99.9%