Refactor sub-chunk structure and align PlayerMovementSettings with proto package. Update gophertunnel dependency to v1.47.3.

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/pelletier/go-toml v1.9.5
 	github.com/rogpeppe/go-internal v1.14.1
 	github.com/samber/lo v1.49.1
-	github.com/sandertv/gophertunnel v1.47.2-0.20250618150444-d66380c4a00b
+	github.com/sandertv/gophertunnel v1.47.3
 	github.com/segmentio/fasthash v1.0.3
 	golang.org/x/exp v0.0.0-20250305212735-054e65f0b394
 	golang.org/x/image v0.25.0

go.sum

@@ -58,6 +58,8 @@ github.com/sandertv/gophertunnel v1.46.1-0.20250511074107-85599aa3447c h1:cZlIS0
 github.com/sandertv/gophertunnel v1.46.1-0.20250511074107-85599aa3447c/go.mod h1:lvzOdyb2fkoo3uySe++hy4UKq0I649oUFJKkro2ZHpY=
 github.com/sandertv/gophertunnel v1.47.2-0.20250618150444-d66380c4a00b h1:/kNTXzMPTigd+ctGH3c4xVOnzxqyVCB11vikFPhvZqY=
 github.com/sandertv/gophertunnel v1.47.2-0.20250618150444-d66380c4a00b/go.mod h1:lvzOdyb2fkoo3uySe++hy4UKq0I649oUFJKkro2ZHpY=
+github.com/sandertv/gophertunnel v1.47.3 h1:MsHv8QEx17+N/39BnAvHn/KU9zv8Rt9ZHTKaZK9vSuo=
+github.com/sandertv/gophertunnel v1.47.3/go.mod h1:lvzOdyb2fkoo3uySe++hy4UKq0I649oUFJKkro2ZHpY=
 github.com/segmentio/fasthash v1.0.3 h1:EI9+KE1EwvMLBWwjpRDc+fEM+prwxDYbslddQGtrmhM=
 github.com/segmentio/fasthash v1.0.3/go.mod h1:waKX8l2N8yckOgmSsXJi7x1ZfdKZ4x7KRMzBtS3oedY=
 github.com/stretchr/testify v1.10.0 h1:Xv5erBjTwe/5IxqUQTdXv5kgmIvbHo3QQyRwhJsOfJA=

legacyver/legacypacket/start_game.go

@@ -189,7 +189,7 @@ type StartGame struct {
 	// on the world.
 	Trial bool
 	// PlayerMovementSettings ...
-	PlayerMovementSettings protocol.PlayerMovementSettings
+	PlayerMovementSettings proto.PlayerMovementSettings
 	// Time is the total time that has elapsed since the start of the world.
 	Time int64
 	// EnchantmentSeed is the seed used to seed the random used to produce enchantments in the enchantment
@@ -319,7 +319,7 @@ func (pk *StartGame) Marshal(io protocol.IO) {
 	io.String(&pk.WorldName)
 	io.String(&pk.TemplateContentIdentity)
 	io.Bool(&pk.Trial)
-	protocol.PlayerMoveSettings(io, &pk.PlayerMovementSettings)
+	proto.PlayerMoveSettings(io, &pk.PlayerMovementSettings)
 	io.Int64(&pk.Time)
 	io.Varint32(&pk.EnchantmentSeed)
 	protocol.Slice(io, &pk.Blocks)

legacyver/proto/player.go

@@ -95,3 +95,41 @@ func (x *PlayerListEntry) ToLatest() protocol.PlayerListEntry {
 func PlayerListRemoveEntry(r protocol.IO, x *PlayerListEntry) {
 	r.UUID(&x.UUID)
 }
+
+// PlayerMovementSettings represents the different server authoritative movement settings. These control how
+// the client will provide input to the server.
+type PlayerMovementSettings struct {
+	// MovementType ...
+	MovementType int32
+	// RewindHistorySize is the amount of history to keep at maximum.
+	RewindHistorySize int32
+	// ServerAuthoritativeBlockBreaking specifies if block breaking should be sent through
+	// packet.PlayerAuthInput or not.
+	ServerAuthoritativeBlockBreaking bool
+}
+
+func (p *PlayerMovementSettings) FromLatest(x protocol.PlayerMovementSettings) PlayerMovementSettings {
+	p.MovementType = 1
+	if p.RewindHistorySize > 0 {
+		p.MovementType = 2
+	}
+	p.RewindHistorySize = x.RewindHistorySize
+	p.ServerAuthoritativeBlockBreaking = x.ServerAuthoritativeBlockBreaking
+	return *p
+}
+
+func (p *PlayerMovementSettings) ToLatest() protocol.PlayerMovementSettings {
+	return protocol.PlayerMovementSettings{
+		RewindHistorySize:                p.RewindHistorySize,
+		ServerAuthoritativeBlockBreaking: p.ServerAuthoritativeBlockBreaking,
+	}
+}
+
+// PlayerMoveSettings reads/writes PlayerMovementSettings x to/from IO r.
+func PlayerMoveSettings(r protocol.IO, x *PlayerMovementSettings) {
+	if IsProtoLT(r, ID818) {
+		r.Varint32(&x.MovementType)
+	}
+	r.Varint32(&x.RewindHistorySize)
+	r.Bool(&x.ServerAuthoritativeBlockBreaking)
+}

legacyver/proto/sub_chunk.go

@@ -15,14 +15,12 @@ type SubChunkEntry struct {
 	HeightMapType byte
 	// HeightMapData is the data for the height map.
 	HeightMapData []int8
-	// BlobHash is the hash of the blob.
-	BlobHash uint64
 	// RenderHeightMapType is always one of the constants defined in the HeightMapData constants.
 	RenderHeightMapType byte
 	// RenderHeightMapData is the data for the render height map.
 	RenderHeightMapData []int8
-	// RenderBlobHash is the hash of the render blob.
-	RenderBlobHash uint64
+	// BlobHash is the hash of the blob.
+	BlobHash uint64
 }
 
 // ToLatest ...
@@ -33,10 +31,9 @@ func (x *SubChunkEntry) ToLatest() protocol.SubChunkEntry {
 		RawPayload:          x.RawPayload,
 		HeightMapType:       x.HeightMapType,
 		HeightMapData:       x.HeightMapData,
-		BlobHash:            x.BlobHash,
 		RenderHeightMapType: x.RenderHeightMapType,
 		RenderHeightMapData: x.RenderHeightMapData,
-		RenderBlobHash:      x.RenderBlobHash,
+		BlobHash:            x.BlobHash,
 	}
 }
 
@@ -47,10 +44,9 @@ func (x *SubChunkEntry) FromLatest(y protocol.SubChunkEntry) SubChunkEntry {
 	x.RawPayload = y.RawPayload
 	x.HeightMapType = y.HeightMapType
 	x.HeightMapData = y.HeightMapData
-	x.BlobHash = y.BlobHash
 	x.RenderHeightMapType = y.RenderHeightMapType
 	x.RenderHeightMapData = y.RenderHeightMapData
-	x.RenderBlobHash = y.RenderBlobHash
+	x.BlobHash = y.BlobHash
 	return *x
 }
 
@@ -65,14 +61,13 @@ func (x *SubChunkEntry) Marshal(r protocol.IO) {
 	if x.HeightMapType == protocol.HeightMapDataHasData {
 		protocol.FuncSliceOfLen(r, 256, &x.HeightMapData, r.Int8)
 	}
-	r.Uint64(&x.BlobHash)
 	if IsProtoGTE(r, ID818) {
 		r.Uint8(&x.RenderHeightMapType)
 		if x.RenderHeightMapType == protocol.HeightMapDataHasData {
 			protocol.FuncSliceOfLen(r, 256, &x.RenderHeightMapData, r.Int8)
 		}
-		r.Uint64(&x.RenderBlobHash)
 	}
+	r.Uint64(&x.BlobHash)
 }
 
 // SubChunkEntryNoCache encodes/decodes a SubChunkEntry assuming the blob cache is not enabled.

legacyver/protocol.go

@@ -572,7 +572,7 @@ func (p *Protocol) downgradePackets(pks []packet.Packet, conn *minecraft.Conn) [
 				WorldName:                      pk.WorldName,
 				TemplateContentIdentity:        pk.TemplateContentIdentity,
 				Trial:                          pk.Trial,
-				PlayerMovementSettings:         pk.PlayerMovementSettings,
+				PlayerMovementSettings:         (&proto.PlayerMovementSettings{}).FromLatest(pk.PlayerMovementSettings),
 				Time:                           pk.Time,
 				EnchantmentSeed:                pk.EnchantmentSeed,
 				Blocks:                         pk.Blocks,
@@ -1130,7 +1130,7 @@ func (p *Protocol) upgradePackets(pks []packet.Packet, conn *minecraft.Conn) []p
 				WorldName:                      pk.WorldName,
 				TemplateContentIdentity:        pk.TemplateContentIdentity,
 				Trial:                          pk.Trial,
-				PlayerMovementSettings:         pk.PlayerMovementSettings,
+				PlayerMovementSettings:         pk.PlayerMovementSettings.ToLatest(),
 				Time:                           pk.Time,
 				EnchantmentSeed:                pk.EnchantmentSeed,
 				Blocks:                         pk.Blocks,