feat: Minecraft version 1.21.6 (minekube#543)

* chore: Update dependencies and enhance command suggestion handling

- Updated go.minekube.com/common to version v0.1.0 in go.mod.
- Added new dependencies for the objx library in go.sum.
- Refactored command suggestion logic in command.go to improve performance and clarity, introducing a new OfferBrigodierSuggestions method.
- Added normalization for command input to enhance suggestion accuracy.
- Registered new Minecraft version 1.21.6 in register.go and updated version handling in version.go.
- Enhanced JSON codec handling in chat.go for better compatibility with different Minecraft protocol versions.

* feat: Introduce support for restricted commands in AvailableCommands

- Added a new flag `FlagIsRestricted` to indicate restricted commands.
- Implemented a placeholder requirement function for handling command restrictions.
- Updated the encoding logic to set the restriction flag when a command has a requirement.
- Enhanced the `toNodes` method to manage restricted commands appropriately, preparing for future implementation of a requirement system.

* feat: Update registry for Minecraft version 1.21.6

- Added new entries for Minecraft 1.21.6, including `minecraft:hex_color` and `minecraft:dialog`.
- Updated existing entries to reflect version changes and maintain compatibility with previous versions.
- Enhanced the handling of various Minecraft resource types and argument properties in the registry.

* fix: Add direction check for pack count limit in KnownPacks decoding

- Updated the Decode method in KnownPacks to include a check for the packet direction before enforcing the maximum pack count limit. This change ensures that the limit is only applied to server-bound packets, improving the handling of different packet types.

* format

Author: robinbraemer

go.mod

@@ -32,7 +32,7 @@ require (
 	github.com/urfave/cli/v2 v2.27.6
 	github.com/zyedidia/generic v1.2.1
 	go.minekube.com/brigodier v0.0.1
-	go.minekube.com/common v0.0.6
+	go.minekube.com/common v0.1.0
 	go.minekube.com/connect v0.6.2
 	go.opentelemetry.io/contrib/instrumentation/net/http/otelhttp v0.57.0
 	go.opentelemetry.io/otel v1.35.0

go.sum

@@ -216,9 +216,14 @@ github.com/spf13/pflag v1.0.6/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An
 github.com/spf13/viper v1.20.1 h1:ZMi+z/lvLyPSCoNtFCpqjy0S4kPbirhpTMwl8BkW9X4=
 github.com/spf13/viper v1.20.1/go.mod h1:P9Mdzt1zoHIG8m2eZQinpiBjo6kCmZSKBClNNqjJvu4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
-github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=
 github.com/stretchr/testify v1.10.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
@@ -242,8 +247,8 @@ github.com/zyedidia/generic v1.2.1 h1:Zv5KS/N2m0XZZiuLS82qheRG4X1o5gsWreGb0hR7XD
 github.com/zyedidia/generic v1.2.1/go.mod h1:ly2RBz4mnz1yeuVbQA/VFwGjK3mnHGRj1JuoG336Bis=
 go.minekube.com/brigodier v0.0.1 h1:v5x+fZNefM24JIi+fYQjQcjZ8rwJbfRSpnnpw4b/x6k=
 go.minekube.com/brigodier v0.0.1/go.mod h1:WJf/lyJVTId/phiY6phPW6++qkTjCQ72rbOWqo4XIqc=
-go.minekube.com/common v0.0.6 h1:XA4mcgDG13hQEBcY2JdmK0Ca2mx2jOZ9M8pflZ85dkE=
-go.minekube.com/common v0.0.6/go.mod h1:RTT2cwrMS+hwGAjJOt06bWtbKx04MuiF0tScyvGeAZo=
+go.minekube.com/common v0.1.0 h1:5pjKxBXVvsrZ7s4ORLA1RHqZ1jEcSW5U7W9/pA9DdN4=
+go.minekube.com/common v0.1.0/go.mod h1:CKCUOhcDjVWRfn77u3Tp/ECV6l1OQ5WUW5M159pu38M=
 go.minekube.com/connect v0.6.2 h1:RajPc7YgqygcOviV2g4xetL3J0Wzi8b/lsYXUzIltxE=
 go.minekube.com/connect v0.6.2/go.mod h1:28k11I4RyzUfAL3AkOXt3atzjeOFAC8eqbCMwsYKAb0=
 go.opencensus.io v0.18.0/go.mod h1:vKdFvxhtzZ9onBp9VKHK8z/sRpBMnKAsufL7wlDrCOA=

pkg/command/command.go

@@ -124,17 +124,44 @@ func (m *Manager) CompletionSuggestions(parse *ParseResults) (*brigodier.Suggest
 
 // OfferSuggestions returns completion suggestions.
 func (m *Manager) OfferSuggestions(ctx context.Context, source Source, cmdline string) ([]string, error) {
-	suggestions, err := m.CompletionSuggestions(m.Parse(ctx, source, cmdline))
+	suggestions, err := m.OfferBrigodierSuggestions(ctx, source, cmdline)
 	if err != nil {
 		return nil, err
 	}
-	s := make([]string, 0, len(suggestions.Suggestions))
-	for _, suggestion := range suggestions.Suggestions {
-		s = append(s, suggestion.Text)
+	result := make([]string, len(suggestions.Suggestions))
+	for i, s := range suggestions.Suggestions {
+		result[i] = s.Text
 	}
-	return s, nil
+	return result, nil
+}
+
+// OfferBrigodierSuggestions returns brigodier Suggestions for the given command line.
+func (m *Manager) OfferBrigodierSuggestions(ctx context.Context, source Source, cmdline string) (*brigodier.Suggestions, error) {
+	cmdLine := normalizeInput(cmdline, false)
+	suggestions, err := m.CompletionSuggestions(m.Parse(ctx, source, cmdLine))
+	if err != nil {
+		return nil, err
+	}
+	return suggestions, nil
 }
 
 type sourceCtx struct{}
 
 var sourceCtxKey = &sourceCtx{}
+
+// normalizeInput normalizes the given command input.
+// input: the raw command input, without the leading slash ('/')
+// trim: whether to remove leading and trailing whitespace from the input
+// returns the normalized command input
+func normalizeInput(input string, trim bool) string {
+	command := input
+	if trim {
+		command = strings.TrimSpace(input)
+	}
+	firstSep := strings.IndexRune(command, brigodier.ArgumentSeparator)
+	if firstSep != -1 {
+		// Aliases are case-insensitive, arguments are not
+		return strings.ToLower(command[:firstSep]) + command[firstSep:]
+	}
+	return strings.ToLower(command)
+}

pkg/edition/java/proto/packet/available_commands.go

@@ -1,6 +1,7 @@
 package packet
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"io"
@@ -22,10 +23,14 @@ const (
 	FlagExecutable     byte = 0x04
 	FlagIsRedirect     byte = 0x08
 	FlagHasSuggestions byte = 0x10
+	FlagIsRestricted   byte = 0x20
 )
 
 var PlaceholderCommand = brigodier.CommandFunc(func(c *brigodier.CommandContext) error { return nil })
 
+// placeholderRequirement is a placeholder requirement function for restricted commands
+var placeholderRequirement = brigodier.RequireFn(func(context.Context) bool { return true })
+
 type AvailableCommands struct {
 	RootNode *brigodier.RootCommandNode
 }
@@ -75,6 +80,9 @@ func encodeNode(wr io.Writer, protocol proto.Protocol, node brigodier.CommandNod
 	if node.Command() != nil {
 		flags |= FlagExecutable
 	}
+	if node.Requirement() != nil {
+		flags |= FlagIsRestricted
+	}
 
 	switch n := node.(type) {
 	case *brigodier.LiteralCommandNode:
@@ -298,6 +306,13 @@ func (w *WireNode) toNodes(wireNodes []*WireNode) (bool, error) {
 				w.Args.Executes(PlaceholderCommand)
 			}
 
+			// If restricted, handle the restriction flag
+			// Note: The Go brigodier library may not have a requirement system,
+			// so this is a placeholder for future implementation
+			if w.Flags&FlagIsRestricted != 0 {
+				w.Args.Requires(placeholderRequirement)
+			}
+
 			w.Built = w.Args.Build()
 		}
 	}

pkg/edition/java/proto/packet/brigadier/registry.go

@@ -192,48 +192,51 @@ func init() {
 	empty(id("minecraft:item_stack", mapSet(Minecraft_1_19, 14)))
 	empty(id("minecraft:item_predicate", mapSet(Minecraft_1_19, 15)))
 	empty(id("minecraft:color", mapSet(Minecraft_1_19, 16)))
-	empty(id("minecraft:component", mapSet(Minecraft_1_19, 17)))
-	empty(id("minecraft:style", mapSet(Minecraft_1_20_3, 18)))
-	empty(id("minecraft:message", mapSet(Minecraft_1_20_3, 19), mapSet(Minecraft_1_19, 18)))
-	empty(id("minecraft:nbt_compound_tag", mapSet(Minecraft_1_20_3, 20), mapSet(Minecraft_1_19, 19)))
-	empty(id("minecraft:nbt_tag", mapSet(Minecraft_1_20_3, 21), mapSet(Minecraft_1_19, 20)))
-	empty(id("minecraft:nbt_path", mapSet(Minecraft_1_20_3, 22), mapSet(Minecraft_1_19, 21)))
-	empty(id("minecraft:objective", mapSet(Minecraft_1_20_3, 23), mapSet(Minecraft_1_19, 22)))
-	empty(id("minecraft:objective_criteria", mapSet(Minecraft_1_20_3, 24), mapSet(Minecraft_1_19, 23)))
-	empty(id("minecraft:operation", mapSet(Minecraft_1_20_3, 25), mapSet(Minecraft_1_19, 24)))
-	empty(id("minecraft:particle", mapSet(Minecraft_1_20_3, 26), mapSet(Minecraft_1_19, 25)))
-	empty(id("minecraft:angle", mapSet(Minecraft_1_20_3, 27), mapSet(Minecraft_1_19, 26)))
-	empty(id("minecraft:rotation", mapSet(Minecraft_1_20_3, 28), mapSet(Minecraft_1_19, 27)))
-	empty(id("minecraft:scoreboard_slot", mapSet(Minecraft_1_20_3, 29), mapSet(Minecraft_1_19, 28)))
-	emptyWithCodec(id("minecraft:score_holder", mapSet(Minecraft_1_20_3, 30), mapSet(Minecraft_1_19, 29)), ByteArgumentPropertyCodec)
-	empty(id("minecraft:swizzle", mapSet(Minecraft_1_20_3, 31), mapSet(Minecraft_1_19, 30)))
-	empty(id("minecraft:team", mapSet(Minecraft_1_20_3, 32), mapSet(Minecraft_1_19, 31)))
-	empty(id("minecraft:item_slot", mapSet(Minecraft_1_20_3, 33), mapSet(Minecraft_1_19, 32)))
-	empty(id("minecraft:item_slots", mapSet(Minecraft_1_20_5, 34))) // added in 1.20.5
-	empty(id("minecraft:resource_location", mapSet(Minecraft_1_20_5, 35), mapSet(Minecraft_1_20_3, 34), mapSet(Minecraft_1_19, 33)))
+	empty(id("minecraft:hex_color", mapSet(Minecraft_1_21_6, 17))) // added in 1.21.6
+	empty(id("minecraft:component", mapSet(Minecraft_1_21_6, 18), mapSet(Minecraft_1_19, 17)))
+	empty(id("minecraft:style", mapSet(Minecraft_1_21_6, 19), mapSet(Minecraft_1_20_3, 18)))
+	empty(id("minecraft:message", mapSet(Minecraft_1_21_6, 20), mapSet(Minecraft_1_20_3, 19), mapSet(Minecraft_1_19, 18)))
+	empty(id("minecraft:nbt_compound_tag", mapSet(Minecraft_1_21_6, 21), mapSet(Minecraft_1_20_3, 20), mapSet(Minecraft_1_19, 19)))
+	empty(id("minecraft:nbt_tag", mapSet(Minecraft_1_21_6, 22), mapSet(Minecraft_1_20_3, 21), mapSet(Minecraft_1_19, 20)))
+	empty(id("minecraft:nbt_path", mapSet(Minecraft_1_21_6, 23), mapSet(Minecraft_1_20_3, 22), mapSet(Minecraft_1_19, 21)))
+	empty(id("minecraft:objective", mapSet(Minecraft_1_21_6, 24), mapSet(Minecraft_1_20_3, 23), mapSet(Minecraft_1_19, 22)))
+	empty(id("minecraft:objective_criteria", mapSet(Minecraft_1_21_6, 25), mapSet(Minecraft_1_20_3, 24), mapSet(Minecraft_1_19, 23)))
+	empty(id("minecraft:operation", mapSet(Minecraft_1_21_6, 26), mapSet(Minecraft_1_20_3, 25), mapSet(Minecraft_1_19, 24)))
+	empty(id("minecraft:particle", mapSet(Minecraft_1_21_6, 27), mapSet(Minecraft_1_20_3, 26), mapSet(Minecraft_1_19, 25)))
+	empty(id("minecraft:angle", mapSet(Minecraft_1_21_6, 28), mapSet(Minecraft_1_20_3, 27), mapSet(Minecraft_1_19, 26)))
+	empty(id("minecraft:rotation", mapSet(Minecraft_1_21_6, 29), mapSet(Minecraft_1_20_3, 28), mapSet(Minecraft_1_19, 27)))
+	empty(id("minecraft:scoreboard_slot", mapSet(Minecraft_1_21_6, 30), mapSet(Minecraft_1_20_3, 29), mapSet(Minecraft_1_19, 28)))
+	emptyWithCodec(id("minecraft:score_holder", mapSet(Minecraft_1_21_6, 31), mapSet(Minecraft_1_20_3, 30), mapSet(Minecraft_1_19, 29)), ByteArgumentPropertyCodec)
+	empty(id("minecraft:swizzle", mapSet(Minecraft_1_21_6, 32), mapSet(Minecraft_1_20_3, 31), mapSet(Minecraft_1_19, 30)))
+	empty(id("minecraft:team", mapSet(Minecraft_1_21_6, 33), mapSet(Minecraft_1_20_3, 32), mapSet(Minecraft_1_19, 31)))
+	empty(id("minecraft:item_slot", mapSet(Minecraft_1_21_6, 34), mapSet(Minecraft_1_20_3, 33), mapSet(Minecraft_1_19, 32)))
+	empty(id("minecraft:item_slots", mapSet(Minecraft_1_21_6, 35), mapSet(Minecraft_1_20_5, 34))) // added in 1.20.5
+	empty(id("minecraft:resource_location", mapSet(Minecraft_1_21_6, 36), mapSet(Minecraft_1_20_5, 35), mapSet(Minecraft_1_20_3, 34), mapSet(Minecraft_1_19, 33)))
 	empty(id("minecraft:mob_effect", mapSet(Minecraft_1_19_3, -1), mapSet(Minecraft_1_19, 34)))
-	empty(id("minecraft:function", mapSet(Minecraft_1_20_5, 36), mapSet(Minecraft_1_20_3, 35), mapSet(Minecraft_1_19_3, 34), mapSet(Minecraft_1_19, 35)))
-	empty(id("minecraft:entity_anchor", mapSet(Minecraft_1_20_5, 37), mapSet(Minecraft_1_20_3, 36), mapSet(Minecraft_1_19_3, 35), mapSet(Minecraft_1_19, 36)))
-	empty(id("minecraft:int_range", mapSet(Minecraft_1_20_5, 38), mapSet(Minecraft_1_20_3, 37), mapSet(Minecraft_1_19_3, 36), mapSet(Minecraft_1_19, 37)))
-	empty(id("minecraft:float_range", mapSet(Minecraft_1_20_5, 39), mapSet(Minecraft_1_20_3, 38), mapSet(Minecraft_1_19_3, 37), mapSet(Minecraft_1_19, 38)))
+	empty(id("minecraft:function", mapSet(Minecraft_1_21_6, 37), mapSet(Minecraft_1_20_5, 36), mapSet(Minecraft_1_20_3, 35), mapSet(Minecraft_1_19_3, 34), mapSet(Minecraft_1_19, 35)))
+	empty(id("minecraft:entity_anchor", mapSet(Minecraft_1_21_6, 38), mapSet(Minecraft_1_20_5, 37), mapSet(Minecraft_1_20_3, 36), mapSet(Minecraft_1_19_3, 35), mapSet(Minecraft_1_19, 36)))
+	empty(id("minecraft:int_range", mapSet(Minecraft_1_21_6, 39), mapSet(Minecraft_1_20_5, 38), mapSet(Minecraft_1_20_3, 37), mapSet(Minecraft_1_19_3, 36), mapSet(Minecraft_1_19, 37)))
+	empty(id("minecraft:float_range", mapSet(Minecraft_1_21_6, 40), mapSet(Minecraft_1_20_5, 39), mapSet(Minecraft_1_20_3, 38), mapSet(Minecraft_1_19_3, 37), mapSet(Minecraft_1_19, 38)))
 	empty(id("minecraft:item_enchantment", mapSet(Minecraft_1_19_3, -1), mapSet(Minecraft_1_19, 39)))
 	empty(id("minecraft:entity_summon", mapSet(Minecraft_1_19_3, -1), mapSet(Minecraft_1_19, 40)))
-	empty(id("minecraft:dimension", mapSet(Minecraft_1_20_5, 40), mapSet(Minecraft_1_20_3, 39), mapSet(Minecraft_1_19_3, 38), mapSet(Minecraft_1_19, 41)))
-	empty(id("minecraft:gamemode", mapSet(Minecraft_1_20_5, 41), mapSet(Minecraft_1_20_3, 40), mapSet(Minecraft_1_19_3, 39)))
-	emptyWithCodec(id("minecraft:time", mapSet(Minecraft_1_20_5, 42), mapSet(Minecraft_1_20_3, 41), mapSet(Minecraft_1_19_3, 40), mapSet(Minecraft_1_19, 42)), TimeArgumentPropertyCodec)
-	register(id("minecraft:resource_or_tag", mapSet(Minecraft_1_20_5, 43), mapSet(Minecraft_1_20_3, 42), mapSet(Minecraft_1_19_3, 41), mapSet(Minecraft_1_19, 43)), RegistryKeyArgument, RegistryKeyArgumentPropertyCodec)
-	register(id("minecraft:resource_or_tag_key", mapSet(Minecraft_1_20_5, 44), mapSet(Minecraft_1_20_3, 43), mapSet(Minecraft_1_19_3, 42)), ResourceOrTagKeyArgument, ResourceOrTagKeyArgumentPropertyCodec)
-	register(id("minecraft:resource", mapSet(Minecraft_1_20_5, 45), mapSet(Minecraft_1_20_3, 44), mapSet(Minecraft_1_19_3, 43), mapSet(Minecraft_1_19, 44)), RegistryKeyArgument, RegistryKeyArgumentPropertyCodec)
-	register(id("minecraft:resource_key", mapSet(Minecraft_1_20_5, 46), mapSet(Minecraft_1_20_3, 45), mapSet(Minecraft_1_19_3, 44)), ResourceKeyArgument, ResourceKeyArgumentPropertyCodec)
-	register(id("minecraft:resource_selector", mapSet(Minecraft_1_21_5, 47)), ResourceSelectorArgument, ResourceSelectorArgumentPropertyCodec)
-	empty(id("minecraft:template_mirror", mapSet(Minecraft_1_21_5, 48), mapSet(Minecraft_1_20_5, 47), mapSet(Minecraft_1_20_3, 46), mapSet(Minecraft_1_19, 45)))
-	empty(id("minecraft:template_rotation", mapSet(Minecraft_1_21_5, 49), mapSet(Minecraft_1_20_5, 48), mapSet(Minecraft_1_20_3, 47), mapSet(Minecraft_1_19, 46)))
-	empty(id("minecraft:heightmap", mapSet(Minecraft_1_21_5, 50), mapSet(Minecraft_1_20_5, 49), mapSet(Minecraft_1_20_3, 49), mapSet(Minecraft_1_19_4, 47)))
-	empty(id("minecraft:uuid", mapSet(Minecraft_1_21_5, 54), mapSet(Minecraft_1_20_5, 53), mapSet(Minecraft_1_20_3, 48), mapSet(Minecraft_1_19_4, 48), mapSet(Minecraft_1_19, 47)))
-
-	empty(id("minecraft:loot_table", mapSet(Minecraft_1_21_5, 51), mapSet(Minecraft_1_20_5, 50)))
-	empty(id("minecraft:loot_predicate", mapSet(Minecraft_1_21_5, 52), mapSet(Minecraft_1_20_5, 51)))
-	empty(id("minecraft:loot_modifier", mapSet(Minecraft_1_21_5, 53), mapSet(Minecraft_1_20_5, 52)))
+	empty(id("minecraft:dimension", mapSet(Minecraft_1_21_6, 41), mapSet(Minecraft_1_20_5, 40), mapSet(Minecraft_1_20_3, 39), mapSet(Minecraft_1_19_3, 38), mapSet(Minecraft_1_19, 41)))
+	empty(id("minecraft:gamemode", mapSet(Minecraft_1_21_6, 42), mapSet(Minecraft_1_20_5, 41), mapSet(Minecraft_1_20_3, 40), mapSet(Minecraft_1_19_3, 39)))
+	emptyWithCodec(id("minecraft:time", mapSet(Minecraft_1_21_6, 43), mapSet(Minecraft_1_20_5, 42), mapSet(Minecraft_1_20_3, 41), mapSet(Minecraft_1_19_3, 40), mapSet(Minecraft_1_19, 42)), TimeArgumentPropertyCodec)
+	register(id("minecraft:resource_or_tag", mapSet(Minecraft_1_21_6, 44), mapSet(Minecraft_1_20_5, 43), mapSet(Minecraft_1_20_3, 42), mapSet(Minecraft_1_19_3, 41), mapSet(Minecraft_1_19, 43)), RegistryKeyArgument, RegistryKeyArgumentPropertyCodec)
+	register(id("minecraft:resource_or_tag_key", mapSet(Minecraft_1_21_6, 45), mapSet(Minecraft_1_20_5, 44), mapSet(Minecraft_1_20_3, 43), mapSet(Minecraft_1_19_3, 42)), ResourceOrTagKeyArgument, ResourceOrTagKeyArgumentPropertyCodec)
+	register(id("minecraft:resource", mapSet(Minecraft_1_21_6, 46), mapSet(Minecraft_1_20_5, 45), mapSet(Minecraft_1_20_3, 44), mapSet(Minecraft_1_19_3, 43), mapSet(Minecraft_1_19, 44)), RegistryKeyArgument, RegistryKeyArgumentPropertyCodec)
+	register(id("minecraft:resource_key", mapSet(Minecraft_1_21_6, 47), mapSet(Minecraft_1_20_5, 46), mapSet(Minecraft_1_20_3, 45), mapSet(Minecraft_1_19_3, 44)), ResourceKeyArgument, ResourceKeyArgumentPropertyCodec)
+	register(id("minecraft:resource_selector", mapSet(Minecraft_1_21_6, 48), mapSet(Minecraft_1_21_5, 47)), ResourceSelectorArgument, ResourceSelectorArgumentPropertyCodec)
+	empty(id("minecraft:template_mirror", mapSet(Minecraft_1_21_6, 49), mapSet(Minecraft_1_21_5, 48), mapSet(Minecraft_1_20_5, 47), mapSet(Minecraft_1_20_3, 46), mapSet(Minecraft_1_19, 45)))
+	empty(id("minecraft:template_rotation", mapSet(Minecraft_1_21_6, 50), mapSet(Minecraft_1_21_5, 49), mapSet(Minecraft_1_20_5, 48), mapSet(Minecraft_1_20_3, 47), mapSet(Minecraft_1_19, 46)))
+	empty(id("minecraft:heightmap", mapSet(Minecraft_1_21_6, 51), mapSet(Minecraft_1_21_5, 50), mapSet(Minecraft_1_20_5, 49), mapSet(Minecraft_1_20_3, 49), mapSet(Minecraft_1_19_4, 47)))
+	empty(id("minecraft:uuid", mapSet(Minecraft_1_21_6, 56), mapSet(Minecraft_1_21_5, 54), mapSet(Minecraft_1_20_5, 53), mapSet(Minecraft_1_20_3, 48), mapSet(Minecraft_1_19_4, 48), mapSet(Minecraft_1_19, 47)))
+
+	empty(id("minecraft:loot_table", mapSet(Minecraft_1_21_6, 52), mapSet(Minecraft_1_21_5, 51), mapSet(Minecraft_1_20_5, 50)))
+	empty(id("minecraft:loot_predicate", mapSet(Minecraft_1_21_6, 53), mapSet(Minecraft_1_21_5, 52), mapSet(Minecraft_1_20_5, 51)))
+	empty(id("minecraft:loot_modifier", mapSet(Minecraft_1_21_6, 54), mapSet(Minecraft_1_21_5, 53), mapSet(Minecraft_1_20_5, 52)))
+
+	empty(id("minecraft:dialog", mapSet(Minecraft_1_21_6, 55))) // added in 1.21.6
 
 	// Crossstitch support
 	register(id("crossstitch:mod_argument", mapSet(Minecraft_1_19, -256)), &ModArgumentProperty{}, ModArgumentPropertyCodec)

pkg/edition/java/proto/packet/config/KnownPacks.go

@@ -22,7 +22,7 @@ func (p *KnownPacks) Decode(c *proto.PacketContext, rd io.Reader) error {
 	if err != nil {
 		return err
 	}
-	if packCount > MaxLengthPacks {
+	if c.Direction == proto.ServerBound && packCount > MaxLengthPacks {
 		return fmt.Errorf("%w: %d", ErrTooManyPacks, packCount)
 	}
 	packs := make([]KnownPack, packCount)

pkg/edition/java/proto/state/register.go

@@ -173,6 +173,7 @@ func init() {
 		m(0x15, version.Minecraft_1_20_3),
 		m(0x18, version.Minecraft_1_20_5),
 		m(0x1A, version.Minecraft_1_21_2),
+		m(0x1B, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&plugin.Message{},
 		m(0x17, version.Minecraft_1_7_2),
@@ -190,6 +191,7 @@ func init() {
 		m(0x10, version.Minecraft_1_20_3),
 		m(0x12, version.Minecraft_1_20_5),
 		m(0x14, version.Minecraft_1_21_2),
+		m(0x15, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&p.ClientSettings{},
 		m(0x15, version.Minecraft_1_7_2),
@@ -204,6 +206,7 @@ func init() {
 		m(0x09, version.Minecraft_1_20_2),
 		m(0x0A, version.Minecraft_1_20_5),
 		m(0x0C, version.Minecraft_1_21_2),
+		m(0x0D, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&chat.LegacyChat{},
 		m(0x01, version.Minecraft_1_7_2),
@@ -215,6 +218,7 @@ func init() {
 	Play.ServerBound.Register(&chat.ChatAcknowledgement{},
 		m(0x03, version.Minecraft_1_19_3),
 		m(0x04, version.Minecraft_1_21_2),
+		m(0x05, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&chat.KeyedPlayerCommand{},
 		m(0x03, version.Minecraft_1_19),
@@ -228,15 +232,18 @@ func init() {
 		m(0x04, version.Minecraft_1_19_3),
 		m(0x05, version.Minecraft_1_20_5),
 		m(0x06, version.Minecraft_1_21_2),
+		m(0x07, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&chat.UnsignedPlayerCommand{},
 		m(0x04, version.Minecraft_1_20_5),
 		m(0x05, version.Minecraft_1_21_2),
+		m(0x06, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&chat.SessionPlayerChat{},
 		m(0x05, version.Minecraft_1_19_3),
 		m(0x06, version.Minecraft_1_20_5),
 		m(0x07, version.Minecraft_1_21_2),
+		m(0x08, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&p.TabCompleteRequest{},
 		m(0x14, version.Minecraft_1_7_2),
@@ -252,6 +259,7 @@ func init() {
 		m(0x0A, version.Minecraft_1_20_2),
 		m(0x0B, version.Minecraft_1_20_5),
 		m(0x0D, version.Minecraft_1_21_2),
+		m(0x0E, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&p.ResourcePackResponse{},
 		m(0x19, version.Minecraft_1_8),
@@ -268,15 +276,18 @@ func init() {
 		m(0x2B, version.Minecraft_1_20_5),
 		m(0x2D, version.Minecraft_1_21_2),
 		m(0x2F, version.Minecraft_1_21_4),
+		m(0x30, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&config.FinishedUpdate{},
 		m(0x0B, version.Minecraft_1_20_2),
 		m(0x0C, version.Minecraft_1_20_5),
 		m(0x0E, version.Minecraft_1_21_2),
+		m(0x0F, version.Minecraft_1_21_6),
 	)
 	Play.ServerBound.Register(&cookie.CookieResponse{},
 		m(0x11, version.Minecraft_1_20_5),
 		m(0x13, version.Minecraft_1_21_2),
+		m(0x14, version.Minecraft_1_21_6),
 	)
 
 	Play.ClientBound.Register(&p.KeepAlive{},