Packet enums

34 enums, 180 constants, used as field types on the packet records in Packets. Conversion is by constant name in both directions: a vanilla constant with no twin here decodes to null, and a constant with no vanilla twin makes the send fail.

on<PacketSendEvent> { e ->
    val packet = e.packet()
    if (packet !is C2SPlayerInteractEntityPacket) return@on
    if (packet.type() == InteractType.ATTACK) {
        log.info("attacked entity ${packet.entityId()}")
    }
}

Inside a List<...> field an unmapped constant is dropped from the list instead of becoming null. InteractType is the one exception to name matching: it is rebuilt through the vanilla PlayerInteractEntityC2SPacket.Handler visitor on decode and branched on when sending.

#AdvancementTabAction

Field of C2SAdvancementTabPacket, vanilla AdvancementTabC2SPacket.Action. Decode only — that packet has no send builder.

#BlockMirror

Field of C2SUpdateStructureBlockPacket, vanilla net.minecraft.util.BlockMirror.

#BlockRotation

Field of C2SUpdateStructureBlockPacket, vanilla net.minecraft.util.BlockRotation.

#BossBarAction

Field of S2CBossBarPacket, vanilla BossBarS2CPacket.Type.

#ChatSuggestionAction

Field of S2CChatSuggestionsPacket, vanilla ChatSuggestionsS2CPacket.Action.

#ChatVisibility

Field of C2SClientOptionsPacket, vanilla net.minecraft.network.message.ChatVisibility.

#ClientCommand

Field of C2SClientCommandPacket, vanilla ClientCommandC2SPacket.Mode.

The send builder re-attaches the local player as the packet's entity, so the send fails while game.player() is absent.

#ClientStatus

Field of C2SClientStatusPacket, vanilla ClientStatusC2SPacket.Mode.

#CommandBlockType

Field of C2SUpdateCommandBlockPacket, vanilla CommandBlockBlockEntity.Type.

#DebugSampleType

Field of S2CDebugSamplePacket, vanilla net.minecraft.util.profiler.DebugSampleType.

#Difficulty

Field of C2SUpdateDifficultyPacket and S2CDifficultyPacket, vanilla net.minecraft.world.Difficulty.

#EntityAnchor

Field of S2CLookAtPacket, vanilla EntityAnchorArgumentType.EntityAnchor.

#Formatting

Team colour in S2CTeamPacket, vanilla net.minecraft.util.Formatting.

#InteractType

Which of the three variants C2SPlayerInteractEntityPacket carries; rebuilt through the vanilla visitor, not by name.

#JigsawJoint

Field of C2SUpdateJigsawPacket, vanilla JigsawBlockEntity.Joint. Decode only — that packet has no send builder.

#ParticlesMode

Field of C2SClientOptionsPacket, vanilla net.minecraft.particle.ParticlesMode.

#PlayerAction

Field of C2SPlayerActionPacket, vanilla PlayerActionC2SPacket.Action.

#PlayerListAction

S2CPlayerListPacket carries a List<PlayerListAction>, vanilla PlayerListS2CPacket.Action.

#PositionFlag

S2CEntityPositionPacket carries a List<PositionFlag>, vanilla net.minecraft.network.packet.s2c.play.PositionFlag.

#RecipeBookCategory

Field of C2SRecipeCategoryOptionsPacket, vanilla net.minecraft.recipe.book.RecipeBookType.

#ResourcePackStatus

Field of C2SResourcePackStatusPacket, vanilla ResourcePackStatusC2SPacket.Status. Decode only — that packet has no send builder.

#ScoreboardRenderType

Field of S2CScoreboardObjectiveUpdatePacket, vanilla ScoreboardCriterion.RenderType.

#ScoreboardSlot

Field of S2CScoreboardDisplayPacket, vanilla net.minecraft.scoreboard.ScoreboardDisplaySlot.

#SlotActionType

Field of C2SClickSlotPacket, vanilla net.minecraft.screen.slot.SlotActionType. Decode only — that packet has no send builder.

#SoundCategory

Field of S2CPlaySoundPacket, S2CPlaySoundFromEntityPacket and S2CStopSoundPacket, vanilla net.minecraft.sound.SoundCategory.

#StructureBlockAction

Field of C2SUpdateStructureBlockPacket, vanilla StructureBlockBlockEntity.Action.

#StructureBlockMode

Field of C2SUpdateStructureBlockPacket, vanilla net.minecraft.block.enums.StructureBlockMode.

#TeamCollisionRule

Field of S2CTeamPacket, null when the packet carries no team info, vanilla AbstractTeam.CollisionRule.

#TeamOperation

What S2CTeamPacket does to the team itself, vanilla TeamS2CPacket.Operation.

#TeamPlayerListOperation

What S2CTeamPacket does to the team's member list; the same vanilla TeamS2CPacket.Operation on a separate field.

#TeamVisibilityRule

Field of S2CTeamPacket, null when the packet carries no team info, vanilla AbstractTeam.VisibilityRule.

#TestBlockMode

Field of C2SSetTestBlockPacket, vanilla net.minecraft.block.enums.TestBlockMode.

#TestInstanceBlockAction

Field of C2STestInstanceBlockActionPacket, vanilla TestInstanceBlockActionC2SPacket.Action. Decode only — that packet has no send builder.

#WaypointOperation

What S2CWaypointPacket does to a tracked waypoint on the locator bar, vanilla WaypointS2CPacket.Operation.