feat: parsing sar custom data (#4)

43 files changed, 496 insertions, 106 deletions

diff --git a/pkg/classes/cmdInfo.go b/pkg/classes/cmdInfo.go
index 6e56c41..b56afed 100644
--- a/pkg/classes/cmdInfo.go
+++ b/pkg/classes/cmdInfo.go
@@ -14,7 +14,7 @@ type CmdInfo struct {
         LocalViewAngles2 []float32
 }
 
-func ParseCmdInfo(reader *bitreader.ReaderType) CmdInfo {
+func ParseCmdInfo(reader *bitreader.Reader) CmdInfo {
         return CmdInfo{
                 Flags:            int32(reader.TryReadBits(32)),
                 ViewOrigin:       []float32{reader.TryReadFloat32(), reader.TryReadFloat32(), reader.TryReadFloat32()},
diff --git a/pkg/classes/sarData.go b/pkg/classes/sarData.go
new file mode 100644
index 0000000..133b67a
--- /dev/null
+++ b/pkg/classes/sarData.go
@@ -0,0 +1,378 @@
+package classes
+
+import (
+        "errors"
+        "fmt"
+
+        "github.com/pektezol/bitreader"
+)
+
+type SarDataType uint8
+
+const (
+        ESarDataTimescaleCheat  SarDataType = 0x01
+        ESarDataInitialCVar     SarDataType = 0x02
+        ESarDataEntityInput     SarDataType = 0x03
+        ESarDataEntityInputSlot SarDataType = 0x04
+        ESarDataPortalPlacement SarDataType = 0x05
+        ESarDataChallengeFlags  SarDataType = 0x06
+        ESarDataCrouchFly       SarDataType = 0x07
+        ESarDataPause           SarDataType = 0x08
+        ESarDataWaitRun         SarDataType = 0x09
+        ESarDataSpeedrunTime    SarDataType = 0x0A
+        ESarDataTimestamp       SarDataType = 0x0B
+        ESarDataFileChecksum    SarDataType = 0x0C
+        ESarDataHWaitRun        SarDataType = 0x0D
+        ESarDataChecksum        SarDataType = 0xFF
+        ESarDataChecksumV2      SarDataType = 0xFE
+        ESarDataInvalid         SarDataType = iota
+)
+
+func (t SarDataType) String() string {
+        switch t {
+        case ESarDataTimescaleCheat:
+                return "SarDataTimescaleCheat"
+        case ESarDataInitialCVar:
+                return "SarDataInitialCVar"
+        case ESarDataEntityInput:
+                return "SarDataEntityInput"
+        case ESarDataEntityInputSlot:
+                return "SarDataEntityInputSlot"
+        case ESarDataPortalPlacement:
+                return "SarDataPortalPlacement"
+        case ESarDataChallengeFlags:
+                return "SarDataChallengeFlags"
+        case ESarDataCrouchFly:
+                return "SarDataCrouchFly"
+        case ESarDataPause:
+                return "SarDataPause"
+        case ESarDataWaitRun:
+                return "SarDataWaitRun"
+        case ESarDataSpeedrunTime:
+                return "SarDataSpeedrunTime"
+        case ESarDataTimestamp:
+                return "SarDataTimestamp"
+        case ESarDataFileChecksum:
+                return "SarDataFileChecksum"
+        case ESarDataHWaitRun:
+                return "SarDataHWaitRun"
+        case ESarDataChecksum:
+                return "SarDataChecksum"
+        case ESarDataChecksumV2:
+                return "SarDataChecksumV2"
+        case ESarDataInvalid:
+                return "SarDataInvalid"
+        default:
+                return fmt.Sprintf("%d", int(t))
+        }
+}
+
+type SarData struct {
+        Type SarDataType
+        Slot int
+        Data any
+}
+
+type SarDataTimescaleCheat struct {
+        Timescale float32
+}
+
+type SarDataInitialCVar struct {
+        CVar string
+        Val  string
+}
+
+type SarDataChecksum struct {
+        DemoSum uint32
+        SarSum  uint32
+}
+
+type SarDataChecksumV2 struct {
+        SarSum    uint32
+        Signature [64]byte
+}
+
+type SarDataEntityInput struct {
+        TargetName string
+        ClassName  string
+        InputName  string
+        Parameter  string
+}
+
+type SarDataPortalPlacement struct {
+        Orange bool
+        X      float32
+        Y      float32
+        Z      float32
+}
+
+type SarDataPause struct {
+        PauseTicks uint32
+}
+
+type SarDataWaitRun struct {
+        Ticks int
+        Cmd   string
+}
+
+type SarDataHWaitRun struct {
+        Ticks int
+        Cmd   string
+}
+
+type SarDataSpeedrunTime struct {
+        NSplits uint32
+        Splits  []SarDataSpeedrunTimeSplits
+}
+
+type SarDataSpeedrunTimeSegs struct {
+        Name  string
+        Ticks uint32
+}
+
+type SarDataSpeedrunTimeSplits struct {
+        Name  string
+        NSegs uint32
+        Segs  []SarDataSpeedrunTimeSegs
+}
+
+type SarDataTimestamp struct {
+        Year uint16
+        Mon  uint8
+        Day  uint8
+        Hour uint8
+        Min  uint8
+        Sec  uint8
+}
+
+type SarDataFileChecksum struct {
+        Sum  uint32
+        Path string
+}
+
+func (sarData *SarData) ParseSarData(reader *bitreader.Reader) (err error) {
+        reader.SkipBytes(8)
+        len := reader.TryReadRemainingBits() / 8
+        if len == 0 {
+                sarData.Type = ESarDataInvalid
+                err = errors.New("sar data invalid")
+                return err
+        }
+        sarData.Type = SarDataType(reader.TryReadBytes(1))
+        if sarData.Type == ESarDataChecksum && len == 5 {
+                len = 9
+        }
+        dataReader := bitreader.NewReaderFromBytes(reader.TryReadBytesToSlice(len-1), true)
+        switch sarData.Type {
+        case ESarDataTimescaleCheat:
+                sarData.Data, err = parseTimescaleCheatData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataInitialCVar:
+                sarData.Data = parseInitialCVarData(dataReader)
+        case ESarDataEntityInputSlot:
+                sarData.Slot = int(dataReader.TryReadBytes(1))
+        case ESarDataEntityInput:
+                sarData.Data = parseEntityInputData(dataReader)
+        case ESarDataChecksum:
+                sarData.Data, err = parseChecksumData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataChecksumV2:
+                sarData.Data, err = parseChecksumV2Data(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataPortalPlacement:
+                data, slot, err := parsePortalPlacementData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                } else {
+                        sarData.Data = data
+                        sarData.Slot = slot
+                }
+        case ESarDataChallengeFlags, ESarDataCrouchFly:
+                sarData.Slot, err = parseChallengeFlagsCrouchFlyData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataPause:
+                sarData.Data, err = parsePauseData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataWaitRun:
+                sarData.Data, err = parseWaitRunData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataHWaitRun:
+                sarData.Data, err = parseHWaitRunData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataSpeedrunTime:
+                sarData.Data, err = parseSpeedrunTimeData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataTimestamp:
+                sarData.Data, err = parseTimestampData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        case ESarDataFileChecksum:
+                sarData.Data, err = parseFileChecksumData(dataReader, len)
+                if err != nil {
+                        sarData.Data = nil
+                }
+        default:
+                err = errors.New("unsupported SAR data type")
+                return err
+        }
+        return nil
+}
+
+func parseTimescaleCheatData(reader *bitreader.Reader, length uint64) (SarDataTimescaleCheat, error) {
+        if length != 5 {
+                return SarDataTimescaleCheat{}, errors.New("sar data invalid")
+        }
+        return SarDataTimescaleCheat{
+                Timescale: reader.TryReadFloat32(),
+        }, nil
+}
+
+func parseInitialCVarData(reader *bitreader.Reader) SarDataInitialCVar {
+        return SarDataInitialCVar{
+                CVar: reader.TryReadString(),
+                Val:  reader.TryReadString(),
+        }
+}
+
+func parseEntityInputData(reader *bitreader.Reader) SarDataEntityInput {
+        return SarDataEntityInput{
+                TargetName: reader.TryReadString(),
+                ClassName:  reader.TryReadString(),
+                InputName:  reader.TryReadString(),
+                Parameter:  reader.TryReadString(),
+        }
+}
+
+func parseChecksumData(reader *bitreader.Reader, length uint64) (SarDataChecksum, error) {
+        if length != 9 {
+                return SarDataChecksum{}, errors.New("sar data invalid")
+        }
+        return SarDataChecksum{
+                DemoSum: reader.TryReadUInt32(),
+                SarSum:  reader.TryReadUInt32(),
+        }, nil
+}
+
+func parseChecksumV2Data(reader *bitreader.Reader, length uint64) (SarDataChecksumV2, error) {
+        if length != 69 {
+                return SarDataChecksumV2{}, errors.New("sar data invalid")
+        }
+        return SarDataChecksumV2{
+                SarSum:    reader.TryReadUInt32(),
+                Signature: [64]byte(reader.TryReadBytesToSlice(60)),
+        }, nil
+}
+
+func parsePortalPlacementData(reader *bitreader.Reader, length uint64) (SarDataPortalPlacement, int, error) {
+        if length != 15 {
+                return SarDataPortalPlacement{}, 0, errors.New("sar data invalid")
+        }
+        slot := int(reader.TryReadBytes(1))
+        orange := reader.TryReadBool()
+        reader.SkipBits(7)
+        return SarDataPortalPlacement{
+                Orange: orange,
+                X:      reader.TryReadFloat32(),
+                Y:      reader.TryReadFloat32(),
+                Z:      reader.TryReadFloat32(),
+        }, slot, nil
+}
+
+func parseChallengeFlagsCrouchFlyData(reader *bitreader.Reader, length uint64) (int, error) {
+        if length != 2 {
+                return 0, errors.New("sar data invalid")
+        }
+        return int(reader.TryReadBytes(1)), nil
+}
+
+func parsePauseData(reader *bitreader.Reader, length uint64) (SarDataPause, error) {
+        if length != 5 {
+                return SarDataPause{}, errors.New("sar data invalid")
+        }
+        return SarDataPause{
+                PauseTicks: reader.TryReadUInt32(),
+        }, nil
+}
+
+func parseWaitRunData(reader *bitreader.Reader, length uint64) (SarDataWaitRun, error) {
+        if length < 6 {
+                return SarDataWaitRun{}, errors.New("sar data invalid")
+        }
+        return SarDataWaitRun{
+                Ticks: int(reader.TryReadUInt32()),
+                Cmd:   reader.TryReadString(),
+        }, nil
+}
+
+func parseHWaitRunData(reader *bitreader.Reader, length uint64) (SarDataHWaitRun, error) {
+        if length < 6 {
+                return SarDataHWaitRun{}, errors.New("sar data invalid")
+        }
+        return SarDataHWaitRun{
+                Ticks: int(reader.TryReadUInt32()),
+                Cmd:   reader.TryReadString(),
+        }, nil
+}
+
+func parseSpeedrunTimeData(reader *bitreader.Reader, length uint64) (SarDataSpeedrunTime, error) {
+        if length < 5 {
+                return SarDataSpeedrunTime{}, errors.New("sar data invalid")
+        }
+        numberOfSplits := reader.TryReadUInt32()
+        splits := make([]SarDataSpeedrunTimeSplits, numberOfSplits)
+        for splitCount := 0; splitCount < int(numberOfSplits); splitCount++ {
+                splits[splitCount].Name = reader.TryReadString()
+                splits[splitCount].NSegs = reader.TryReadUInt32()
+                splits[splitCount].Segs = make([]SarDataSpeedrunTimeSegs, splits[splitCount].NSegs)
+                for segCount := 0; segCount < int(splits[splitCount].NSegs); segCount++ {
+                        splits[splitCount].Segs[segCount].Name = reader.TryReadString()
+                        splits[splitCount].Segs[segCount].Ticks = reader.TryReadUInt32()
+                }
+        }
+        return SarDataSpeedrunTime{
+                NSplits: numberOfSplits,
+                Splits:  splits,
+        }, nil
+}
+
+func parseTimestampData(reader *bitreader.Reader, length uint64) (SarDataTimestamp, error) {
+        if length != 8 {
+                return SarDataTimestamp{}, errors.New("sar data invalid")
+        }
+        timestamp := reader.TryReadBytesToSlice(7)
+        return SarDataTimestamp{
+                Year: uint16(timestamp[0]) | uint16(timestamp[1])<<8,
+                Mon:  timestamp[2] + 1,
+                Day:  timestamp[3],
+                Hour: timestamp[4],
+                Min:  timestamp[5],
+                Sec:  timestamp[6],
+        }, nil
+}
+
+func parseFileChecksumData(reader *bitreader.Reader, length uint64) (SarDataFileChecksum, error) {
+        if length < 6 {
+                return SarDataFileChecksum{}, errors.New("sar data invalid")
+        }
+        return SarDataFileChecksum{
+                Sum:  reader.TryReadUInt32(),
+                Path: reader.TryReadString(),
+        }, nil
+}
diff --git a/pkg/classes/sendTable.go b/pkg/classes/sendTable.go
index 4521464..bc36d75 100644
--- a/pkg/classes/sendTable.go
+++ b/pkg/classes/sendTable.go
@@ -59,7 +59,7 @@ const (
         DataTable
 )
 
-func ParseSendTable(reader *bitreader.ReaderType) SendTable {
+func ParseSendTable(reader *bitreader.Reader) SendTable {
         sendTable := SendTable{
                 NeedsDecoder: reader.TryReadBool(),
                 NetTableName: reader.TryReadString(),
diff --git a/pkg/classes/serverClassInfo.go b/pkg/classes/serverClassInfo.go
index c60dad1..fbccffb 100644
--- a/pkg/classes/serverClassInfo.go
+++ b/pkg/classes/serverClassInfo.go
@@ -10,7 +10,7 @@ type ServerClassInfo struct {
         DataTableName string
 }
 
-func ParseServerClassInfo(reader *bitreader.ReaderType, count int, numOfClasses int) ServerClassInfo {
+func ParseServerClassInfo(reader *bitreader.Reader, count int, numOfClasses int) ServerClassInfo {
         return ServerClassInfo{
                 ClassId:       int16(reader.TryReadBits(16)),
                 ClassName:     reader.TryReadString(),
diff --git a/pkg/classes/stringTable.go b/pkg/classes/stringTable.go
index c6709f5..3983c1f 100644
--- a/pkg/classes/stringTable.go
+++ b/pkg/classes/stringTable.go
@@ -1,8 +1,6 @@
 package classes
 
 import (
-        "bytes"
-
         "github.com/pektezol/bitreader"
 )
 
@@ -26,7 +24,7 @@ type StringTableClass struct {
         Data string
 }
 
-func ParseStringTables(reader *bitreader.ReaderType) []StringTable {
+func ParseStringTables(reader *bitreader.Reader) []StringTable {
         tableCount := reader.TryReadBits(8)
         stringTables := make([]StringTable, tableCount)
         for i := 0; i < int(tableCount); i++ {
@@ -37,7 +35,7 @@ func ParseStringTables(reader *bitreader.ReaderType) []StringTable {
         return stringTables
 }
 
-func (stringTable *StringTable) ParseStream(reader *bitreader.ReaderType) {
+func (stringTable *StringTable) ParseStream(reader *bitreader.Reader) {
         stringTable.Name = reader.TryReadString()
         entryCount := reader.TryReadBits(16)
         stringTable.TableEntries = make([]StringTableEntry, entryCount)
@@ -60,23 +58,23 @@ func (stringTable *StringTable) ParseStream(reader *bitreader.ReaderType) {
         }
 }
 
-func (stringTableEntry *StringTableEntry) Parse(reader *bitreader.ReaderType) {
+func (stringTableEntry *StringTableEntry) Parse(reader *bitreader.Reader) {
         stringTableEntry.Name = reader.TryReadString()
         if reader.TryReadBool() {
                 byteLen, err := reader.ReadBits(16)
                 if err != nil {
                         return
                 }
-                dataBsr := reader.TryReadBytesToSlice(int(byteLen))
-                _ = bitreader.Reader(bytes.NewReader(dataBsr), true) // TODO: Parse StringTableEntry
+                dataBsr := reader.TryReadBytesToSlice(byteLen)
+                _ = bitreader.NewReaderFromBytes(dataBsr, true) // TODO: Parse StringTableEntry
                 // stringTableEntry.EntryData.ParseStream(entryReader)
         }
 }
 
-func (stringTableClass *StringTableClass) Parse(reader *bitreader.ReaderType) {
+func (stringTableClass *StringTableClass) Parse(reader *bitreader.Reader) {
         stringTableClass.Name = reader.TryReadString()
         if reader.TryReadBool() {
                 dataLen := reader.TryReadBits(16)
-                stringTableClass.Data = reader.TryReadStringLen(int(dataLen))
+                stringTableClass.Data = reader.TryReadStringLength(dataLen)
         }
 }
diff --git a/pkg/classes/userCmdInfo.go b/pkg/classes/userCmdInfo.go
index a6d9091..04d76b6 100644
--- a/pkg/classes/userCmdInfo.go
+++ b/pkg/classes/userCmdInfo.go
@@ -24,7 +24,7 @@ type UserCmdInfo struct {
 }
 
 func ParseUserCmdInfo(data []byte) UserCmdInfo {
-        reader := bitreader.Reader(bytes.NewReader(data), true)
+        reader := bitreader.NewReader(bytes.NewReader(data), true)
         userCmdInfo := UserCmdInfo{}
         if reader.TryReadBool() {
                 userCmdInfo.CommandNumber = int32(reader.TryReadBits(32))
diff --git a/pkg/messages/messages.go b/pkg/messages/messages.go
index 39f89e9..6fa58fc 100644
--- a/pkg/messages/messages.go
+++ b/pkg/messages/messages.go
@@ -8,7 +8,7 @@ import (
         messages "github.com/pektezol/demoparser/pkg/messages/types"
 )
 
-func ParseMessages(messageType int, reader *bitreader.ReaderType) any {
+func ParseMessages(messageType int, reader *bitreader.Reader) any {
         var messageData any
         switch messageType {
         case 0:
diff --git a/pkg/messages/types/netDisconnect.go b/pkg/messages/types/netDisconnect.go
index 69d4a67..3ecf8e1 100644
--- a/pkg/messages/types/netDisconnect.go
+++ b/pkg/messages/types/netDisconnect.go
@@ -6,7 +6,7 @@ type NetDisconnect struct {
         Text string
 }
 
-func ParseNetDisconnect(reader *bitreader.ReaderType) NetDisconnect {
+func ParseNetDisconnect(reader *bitreader.Reader) NetDisconnect {
         return NetDisconnect{
                 Text: reader.TryReadString(),
         }
diff --git a/pkg/messages/types/netFile.go b/pkg/messages/types/netFile.go
index a41a0cf..328900c 100644
--- a/pkg/messages/types/netFile.go
+++ b/pkg/messages/types/netFile.go
@@ -8,7 +8,7 @@ type NetFile struct {
         FileRequested bool
 }
 
-func ParseNetFile(reader *bitreader.ReaderType) NetFile {
+func ParseNetFile(reader *bitreader.Reader) NetFile {
         return NetFile{
                 TransferId:    int32(reader.TryReadBits(32)),
                 FileName:      reader.TryReadString(),
diff --git a/pkg/messages/types/netNop.go b/pkg/messages/types/netNop.go
index 33f8e25..f942786 100644
--- a/pkg/messages/types/netNop.go
+++ b/pkg/messages/types/netNop.go
@@ -4,6 +4,6 @@ import "github.com/pektezol/bitreader"
 
 type NetNop struct{}
 
-func ParseNetNop(reader *bitreader.ReaderType) NetNop {
+func ParseNetNop(reader *bitreader.Reader) NetNop {
         return NetNop{}
 }
diff --git a/pkg/messages/types/netSetConVar.go b/pkg/messages/types/netSetConVar.go
index 08042ae..f04f564 100644
--- a/pkg/messages/types/netSetConVar.go
+++ b/pkg/messages/types/netSetConVar.go
@@ -12,7 +12,7 @@ type conVar struct {
         Value string
 }
 
-func ParseNetSetConVar(reader *bitreader.ReaderType) NetSetConVar {
+func ParseNetSetConVar(reader *bitreader.Reader) NetSetConVar {
         length := reader.TryReadBits(8)
         convars := []conVar{}
         for count := 0; count < int(length); count++ {
diff --git a/pkg/messages/types/netSignOnState.go b/pkg/messages/types/netSignOnState.go
index 4609ff2..277a6ee 100644
--- a/pkg/messages/types/netSignOnState.go
+++ b/pkg/messages/types/netSignOnState.go
@@ -12,15 +12,15 @@ type NetSignOnState struct {
         MapName            string
 }
 
-func ParseNetSignOnState(reader *bitreader.ReaderType) NetSignOnState {
+func ParseNetSignOnState(reader *bitreader.Reader) NetSignOnState {
         netSignOnState := NetSignOnState{
                 SignOnState:      int8(reader.TryReadBits(8)),
                 SpawnCount:       int32(reader.TryReadBits(32)),
                 NumServerPlayers: int32(reader.TryReadBits(32)),
                 IdsLength:        int32(reader.TryReadBits(32)),
         }
-        netSignOnState.PlayersNetworksIds = reader.TryReadBytesToSlice(int(netSignOnState.IdsLength))
+        netSignOnState.PlayersNetworksIds = reader.TryReadBytesToSlice(uint64(netSignOnState.IdsLength))
         netSignOnState.MapNameLength = int32(reader.TryReadBits(32))
-        netSignOnState.MapName = reader.TryReadStringLen(int(netSignOnState.MapNameLength))
+        netSignOnState.MapName = reader.TryReadStringLength(uint64(netSignOnState.MapNameLength))
         return netSignOnState
 }
diff --git a/pkg/messages/types/netSplitScreenUser.go b/pkg/messages/types/netSplitScreenUser.go
index 65e85f3..9e4caa8 100644
--- a/pkg/messages/types/netSplitScreenUser.go
+++ b/pkg/messages/types/netSplitScreenUser.go
@@ -6,7 +6,7 @@ type NetSplitScreenUser struct {
         Unknown bool
 }
 
-func ParseNetSplitScreenUser(reader *bitreader.ReaderType) NetSplitScreenUser {
+func ParseNetSplitScreenUser(reader *bitreader.Reader) NetSplitScreenUser {
         return NetSplitScreenUser{
                 Unknown: reader.TryReadBool(),
         }
diff --git a/pkg/messages/types/netStringCmd.go b/pkg/messages/types/netStringCmd.go
index 158658e..da5a75b 100644
--- a/pkg/messages/types/netStringCmd.go
+++ b/pkg/messages/types/netStringCmd.go
@@ -6,7 +6,7 @@ type NetStringCmd struct {
         Command string
 }
 
-func ParseNetStringCmd(reader *bitreader.ReaderType) NetStringCmd {
+func ParseNetStringCmd(reader *bitreader.Reader) NetStringCmd {
         return NetStringCmd{
                 Command: reader.TryReadString(),
         }
diff --git a/pkg/messages/types/netTick.go b/pkg/messages/types/netTick.go
index e14f259..bd3464a 100644
--- a/pkg/messages/types/netTick.go
+++ b/pkg/messages/types/netTick.go
@@ -8,7 +8,7 @@ type NetTick struct {
         HostFrameTimeStdDeviation int16
 }
 
-func ParseNetTick(reader *bitreader.ReaderType) NetTick {
+func ParseNetTick(reader *bitreader.Reader) NetTick {
         return NetTick{
                 Tick:                      int32(reader.TryReadBits(32)),
                 HostFrameTime:             int16(reader.TryReadBits(16) / 10e5),
diff --git a/pkg/messages/types/svcBspDecal.go b/pkg/messages/types/svcBspDecal.go
index 484497f..dda81dd 100644
--- a/pkg/messages/types/svcBspDecal.go
+++ b/pkg/messages/types/svcBspDecal.go
@@ -17,7 +17,7 @@ type vectorCoord struct {
         Valid bool
 }
 
-func ParseSvcBspDecal(reader *bitreader.ReaderType) SvcBspDecal {
+func ParseSvcBspDecal(reader *bitreader.Reader) SvcBspDecal {
         svcBspDecal := SvcBspDecal{
                 Pos:               readVectorCoords(reader),
                 DecalTextureIndex: int16(reader.TryReadBits(9)),
@@ -30,7 +30,7 @@ func ParseSvcBspDecal(reader *bitreader.ReaderType) SvcBspDecal {
         return svcBspDecal
 }
 
-func readVectorCoords(reader *bitreader.ReaderType) []vectorCoord {
+func readVectorCoords(reader *bitreader.Reader) []vectorCoord {
         const COORD_INTEGER_BITS uint8 = 14
         const COORD_FRACTIONAL_BITS uint8 = 5
         const COORD_DENOMINATOR uint8 = 1 << COORD_FRACTIONAL_BITS
@@ -42,10 +42,10 @@ func readVectorCoords(reader *bitreader.ReaderType) []vectorCoord {
                 if integer != 0 || fraction != 0 {
                         sign := reader.TryReadBits(1)
                         if integer != 0 {
-                                integer = reader.TryReadBits(int(COORD_INTEGER_BITS)) + 1
+                                integer = reader.TryReadBits(uint64(COORD_INTEGER_BITS)) + 1
                         }
                         if fraction != 0 {
-                                fraction = reader.TryReadBits(int(COORD_FRACTIONAL_BITS))
+                                fraction = reader.TryReadBits(uint64(COORD_FRACTIONAL_BITS))
                         }
                         value = float32(integer) + float32(fraction)*COORD_RESOLUTION
                         if sign != 0 {
diff --git a/pkg/messages/types/svcClassInfo.go b/pkg/messages/types/svcClassInfo.go
index 9f367d3..27862bf 100644
--- a/pkg/messages/types/svcClassInfo.go
+++ b/pkg/messages/types/svcClassInfo.go
@@ -19,7 +19,7 @@ type serverClass struct {
         DataTableName string
 }
 
-func ParseSvcClassInfo(reader *bitreader.ReaderType) SvcClassInfo {
+func ParseSvcClassInfo(reader *bitreader.Reader) SvcClassInfo {
         svcClassInfo := SvcClassInfo{
                 Length:         int16(reader.TryReadBits(16)),
                 CreateOnClient: reader.TryReadBool(),
@@ -29,7 +29,7 @@ func ParseSvcClassInfo(reader *bitreader.ReaderType) SvcClassInfo {
                 for count := 0; count < int(svcClassInfo.Length); count++ {
                         fmt.Println(classes)
                         classes = append(classes, serverClass{
-                                ClassId:       int16(reader.TryReadBits(int(math.Log2(float64(svcClassInfo.Length)) + 1))),
+                                ClassId:       int16(reader.TryReadBits(uint64(math.Log2(float64(svcClassInfo.Length)) + 1))),
                                 ClassName:     reader.TryReadString(),
                                 DataTableName: reader.TryReadString(),
                         })
diff --git a/pkg/messages/types/svcCmdKeyValues.go b/pkg/messages/types/svcCmdKeyValues.go
index 1c4d819..35a8a8d 100644
--- a/pkg/messages/types/svcCmdKeyValues.go
+++ b/pkg/messages/types/svcCmdKeyValues.go
@@ -7,10 +7,10 @@ type SvcCmdKeyValues struct {
         Data   []byte
 }
 
-func ParseSvcCmdKeyValues(reader *bitreader.ReaderType) SvcCmdKeyValues {
+func ParseSvcCmdKeyValues(reader *bitreader.Reader) SvcCmdKeyValues {
         svcCmdKeyValues := SvcCmdKeyValues{
                 Length: int32(reader.TryReadBits(32)),
         }
-        svcCmdKeyValues.Data = reader.TryReadBytesToSlice(int(svcCmdKeyValues.Length))
+        svcCmdKeyValues.Data = reader.TryReadBytesToSlice(uint64(svcCmdKeyValues.Length))
         return svcCmdKeyValues
 }
diff --git a/pkg/messages/types/svcCreateStringTable.go b/pkg/messages/types/svcCreateStringTable.go
index ed9e477..3c15e5c 100644
--- a/pkg/messages/types/svcCreateStringTable.go
+++ b/pkg/messages/types/svcCreateStringTable.go
@@ -18,12 +18,12 @@ type SvcCreateStringTable struct {
         StringData        int
 }
 
-func ParseSvcCreateStringTable(reader *bitreader.ReaderType) SvcCreateStringTable {
+func ParseSvcCreateStringTable(reader *bitreader.Reader) SvcCreateStringTable {
         svcCreateStringTable := SvcCreateStringTable{
                 Name:       reader.TryReadString(),
                 MaxEntries: int16(reader.TryReadBits(16)),
         }
-        svcCreateStringTable.NumEntries = int8(reader.TryReadBits(int(math.Log2(float64(svcCreateStringTable.MaxEntries))) + 1))
+        svcCreateStringTable.NumEntries = int8(reader.TryReadBits(uint64(math.Log2(float64(svcCreateStringTable.MaxEntries))) + 1))
         svcCreateStringTable.Length = int32(reader.TryReadBits(20))
         svcCreateStringTable.UserDataFixedSize = reader.TryReadBool()
         if svcCreateStringTable.UserDataFixedSize {
@@ -31,6 +31,6 @@ func ParseSvcCreateStringTable(reader *bitreader.ReaderType) SvcCreateStringTabl
                 svcCreateStringTable.UserDataSizeBits = int8(reader.TryReadBits(4))
         }
         svcCreateStringTable.Flags = int8(reader.TryReadBits(2))
-        reader.SkipBits(int(svcCreateStringTable.Length)) // TODO: StringTable parsing
+        reader.SkipBits(uint64(svcCreateStringTable.Length)) // TODO: StringTable parsing
         return svcCreateStringTable
 }
diff --git a/pkg/messages/types/svcCrosshairAngle.go b/pkg/messages/types/svcCrosshairAngle.go
index cf18212..e8424e1 100644
--- a/pkg/messages/types/svcCrosshairAngle.go
+++ b/pkg/messages/types/svcCrosshairAngle.go
@@ -6,7 +6,7 @@ type SvcCrosshairAngle struct {
         Angle []int16
 }
 
-func ParseSvcCrosshairAngle(reader *bitreader.ReaderType) SvcCrosshairAngle {
+func ParseSvcCrosshairAngle(reader *bitreader.Reader) SvcCrosshairAngle {
         return SvcCrosshairAngle{
                 Angle: []int16{int16(reader.TryReadBits(16)), int16(reader.TryReadBits(16)), int16(reader.TryReadBits(16))},
         }
diff --git a/pkg/messages/types/svcEntityMessage.go b/pkg/messages/types/svcEntityMessage.go
index 9726ced..8d5c4aa 100644
--- a/pkg/messages/types/svcEntityMessage.go
+++ b/pkg/messages/types/svcEntityMessage.go
@@ -9,12 +9,12 @@ type SvcEntityMessage struct {
         Data        []byte
 }
 
-func ParseSvcEntityMessage(reader *bitreader.ReaderType) SvcEntityMessage {
+func ParseSvcEntityMessage(reader *bitreader.Reader) SvcEntityMessage {
         svcEntityMessage := SvcEntityMessage{
                 EntityIndex: int16(reader.TryReadBits(11)),
                 ClassId:     int16(reader.TryReadBits(9)),
                 Length:      int16(reader.TryReadBits(11)),
         }
-        svcEntityMessage.Data = reader.TryReadBitsToSlice(int(svcEntityMessage.Length))
+        svcEntityMessage.Data = reader.TryReadBitsToSlice(uint64(svcEntityMessage.Length))
         return svcEntityMessage
 }
diff --git a/pkg/messages/types/svcFixAngle.go b/pkg/messages/types/svcFixAngle.go
index 56acf04..675c50e 100644
--- a/pkg/messages/types/svcFixAngle.go
+++ b/pkg/messages/types/svcFixAngle.go
@@ -7,7 +7,7 @@ type SvcFixAngle struct {
         Angle    []int16
 }
 
-func ParseSvcFixAngle(reader *bitreader.ReaderType) SvcFixAngle {
+func ParseSvcFixAngle(reader *bitreader.Reader) SvcFixAngle {
         return SvcFixAngle{
                 Relative: reader.TryReadBool(),
                 Angle:    []int16{int16(reader.TryReadBits(16)), int16(reader.TryReadBits(16)), int16(reader.TryReadBits(16))},
diff --git a/pkg/messages/types/svcGameEvent.go b/pkg/messages/types/svcGameEvent.go
index 6ee4d01..44d6dd5 100644
--- a/pkg/messages/types/svcGameEvent.go
+++ b/pkg/messages/types/svcGameEvent.go
@@ -7,10 +7,10 @@ type SvcGameEvent struct {
         Data   []byte // TODO: GameEvent[]
 }
 
-func ParseSvcGameEvent(reader *bitreader.ReaderType) SvcGameEvent {
+func ParseSvcGameEvent(reader *bitreader.Reader) SvcGameEvent {
         svcGameEvent := SvcGameEvent{
                 Length: int16(reader.TryReadBits(11)),
         }
-        svcGameEvent.Data = reader.TryReadBitsToSlice(int(svcGameEvent.Length))
+        svcGameEvent.Data = reader.TryReadBitsToSlice(uint64(svcGameEvent.Length))
         return svcGameEvent
 }
diff --git a/pkg/messages/types/svcGameEventList.go b/pkg/messages/types/svcGameEventList.go
index b99ce28..c6eb896 100644
--- a/pkg/messages/types/svcGameEventList.go
+++ b/pkg/messages/types/svcGameEventList.go
@@ -11,11 +11,11 @@ type SvcGameEventList struct {
 type gameEventDescriptor struct {
 }
 
-func ParseSvcGameEventList(reader *bitreader.ReaderType) SvcGameEventList {
+func ParseSvcGameEventList(reader *bitreader.Reader) SvcGameEventList {
         svcGameEventList := SvcGameEventList{
                 Events: int16(reader.TryReadBits(9)),
                 Length: int32(reader.TryReadBits(20)),
         }
-        reader.TryReadBitsToSlice(int(svcGameEventList.Length))
+        reader.TryReadBitsToSlice(uint64(svcGameEventList.Length))
         return svcGameEventList
 }
diff --git a/pkg/messages/types/svcGetCvarValue.go b/pkg/messages/types/svcGetCvarValue.go
index aef5c8e..0598722 100644
--- a/pkg/messages/types/svcGetCvarValue.go
+++ b/pkg/messages/types/svcGetCvarValue.go
@@ -7,9 +7,9 @@ type SvcGetCvarValue struct {
         CvarName string
 }
 
-func ParseSvcGetCvarValue(reader *bitreader.ReaderType) SvcGetCvarValue {
+func ParseSvcGetCvarValue(reader *bitreader.Reader) SvcGetCvarValue {
         svcGetCvarValue := SvcGetCvarValue{
-                Cookie:   reader.TryReadStringLen(4),
+                Cookie:   reader.TryReadStringLength(4),
                 CvarName: reader.TryReadString(),
         }
         return svcGetCvarValue
diff --git a/pkg/messages/types/svcMenu.go b/pkg/messages/types/svcMenu.go
index d89f52c..9958e99 100644
--- a/pkg/messages/types/svcMenu.go
+++ b/pkg/messages/types/svcMenu.go
@@ -8,11 +8,11 @@ type SvcMenu struct {
         Data     []byte
 }
 
-func ParseSvcMenu(reader *bitreader.ReaderType) SvcMenu {
+func ParseSvcMenu(reader *bitreader.Reader) SvcMenu {
         svcMenu := SvcMenu{
                 MenuType: int16(reader.TryReadBits(16)),
                 Length:   int32(reader.TryReadBits(32)),
         }
-        svcMenu.Data = reader.TryReadBitsToSlice(int(svcMenu.Length))
+        svcMenu.Data = reader.TryReadBitsToSlice(uint64(svcMenu.Length))
         return svcMenu
 }
diff --git a/pkg/messages/types/svcPacketEntities.go b/pkg/messages/types/svcPacketEntities.go
index b1c23e5..54e4a2a 100644
--- a/pkg/messages/types/svcPacketEntities.go
+++ b/pkg/messages/types/svcPacketEntities.go
@@ -1,6 +1,8 @@
 package messages
 
-import "github.com/pektezol/bitreader"
+import (
+        "github.com/pektezol/bitreader"
+)
 
 type SvcPacketEntities struct {
         MaxEntries      int16
@@ -13,18 +15,23 @@ type SvcPacketEntities struct {
         Data            []byte
 }
 
-func ParseSvcPacketEntities(reader *bitreader.ReaderType) SvcPacketEntities {
+func ParseSvcPacketEntities(reader *bitreader.Reader) SvcPacketEntities {
         svcPacketEntities := SvcPacketEntities{
                 MaxEntries: int16(reader.TryReadBits(11)),
                 IsDelta:    reader.TryReadBool(),
         }
         if svcPacketEntities.IsDelta {
                 svcPacketEntities.DeltaFrom = int32(reader.TryReadBits(32))
+        } else {
+                svcPacketEntities.DeltaFrom = -1
         }
         svcPacketEntities.BaseLine = reader.TryReadBool()
         svcPacketEntities.UpdatedEntries = int16(reader.TryReadBits(11))
         svcPacketEntities.Length = int32(reader.TryReadBits(20))
         svcPacketEntities.UpdatedBaseline = reader.TryReadBool()
-        svcPacketEntities.Data = reader.TryReadBitsToSlice(int(svcPacketEntities.Length))
+        svcPacketEntities.Data = reader.TryReadBitsToSlice(uint64(svcPacketEntities.Length)) //, dataReader = reader.ForkAndSkip(int(svcPacketEntities.Length))
+        // for count := 0; count < int(svcPacketEntities.UpdatedEntries); count++ {
+        //      dataReader.TryReadBool()
+        // }
         return svcPacketEntities
 }
diff --git a/pkg/messages/types/svcPaintmapData.go b/pkg/messages/types/svcPaintmapData.go
index 6b041da..41ef515 100644
--- a/pkg/messages/types/svcPaintmapData.go
+++ b/pkg/messages/types/svcPaintmapData.go
@@ -7,10 +7,10 @@ type SvcPaintmapData struct {
         Data   []byte
 }
 
-func ParseSvcPaintmapData(reader *bitreader.ReaderType) SvcPaintmapData {
+func ParseSvcPaintmapData(reader *bitreader.Reader) SvcPaintmapData {
         svcPaintmapData := SvcPaintmapData{
                 Length: int32(reader.TryReadBits(32)),
         }
-        svcPaintmapData.Data = reader.TryReadBitsToSlice(int(svcPaintmapData.Length))
+        svcPaintmapData.Data = reader.TryReadBitsToSlice(uint64(svcPaintmapData.Length))
         return svcPaintmapData
 }
diff --git a/pkg/messages/types/svcPrefetch.go b/pkg/messages/types/svcPrefetch.go
index 549f926..50d01e9 100644
--- a/pkg/messages/types/svcPrefetch.go
+++ b/pkg/messages/types/svcPrefetch.go
@@ -6,7 +6,7 @@ type SvcPrefetch struct {
         SoundIndex int16
 }
 
-func ParseSvcPrefetch(reader *bitreader.ReaderType) SvcPrefetch {
+func ParseSvcPrefetch(reader *bitreader.Reader) SvcPrefetch {
         return SvcPrefetch{
                 SoundIndex: int16(reader.TryReadBits(13)),
         }
diff --git a/pkg/messages/types/svcPrint.go b/pkg/messages/types/svcPrint.go
index 8aff927..f31d046 100644
--- a/pkg/messages/types/svcPrint.go
+++ b/pkg/messages/types/svcPrint.go
@@ -6,7 +6,7 @@ type SvcPrint struct {
         Message string
 }
 
-func ParseSvcPrint(reader *bitreader.ReaderType) SvcPrint {
+func ParseSvcPrint(reader *bitreader.Reader) SvcPrint {
         return SvcPrint{
                 Message: reader.TryReadString(),
         }
diff --git a/pkg/messages/types/svcSendTable.go b/pkg/messages/types/svcSendTable.go
index ae8960b..9eb47fc 100644
--- a/pkg/messages/types/svcSendTable.go
+++ b/pkg/messages/types/svcSendTable.go
@@ -8,7 +8,7 @@ type SvcSendTable struct {
         Props        int32
 }
 
-func ParseSvcSendTable(reader *bitreader.ReaderType) SvcSendTable {
+func ParseSvcSendTable(reader *bitreader.Reader) SvcSendTable {
         return SvcSendTable{
                 NeedsDecoder: int8(reader.TryReadBits(8)),
                 Length:       int8(reader.TryReadBits(8)),
diff --git a/pkg/messages/types/svcServerInfo.go b/pkg/messages/types/svcServerInfo.go
index b8bb308..c699eca 100644
--- a/pkg/messages/types/svcServerInfo.go
+++ b/pkg/messages/types/svcServerInfo.go
@@ -21,7 +21,7 @@ type SvcServerInfo struct {
         HostName     string
 }
 
-func ParseSvcServerInfo(reader *bitreader.ReaderType) SvcServerInfo {
+func ParseSvcServerInfo(reader *bitreader.Reader) SvcServerInfo {
         return SvcServerInfo{
                 Protocol:     int16(reader.TryReadBits(16)),
                 ServerCount:  int32(reader.TryReadBits(32)),
diff --git a/pkg/messages/types/svcSetPause.go b/pkg/messages/types/svcSetPause.go
index 94303b7..551a4d3 100644
--- a/pkg/messages/types/svcSetPause.go
+++ b/pkg/messages/types/svcSetPause.go
@@ -6,7 +6,7 @@ type SvcSetPause struct {
         Paused bool
 }
 
-func ParseSvcSetPause(reader *bitreader.ReaderType) SvcSetPause {
+func ParseSvcSetPause(reader *bitreader.Reader) SvcSetPause {
         return SvcSetPause{
                 Paused: reader.TryReadBool(),
         }
diff --git a/pkg/messages/types/svcSetView.go b/pkg/messages/types/svcSetView.go
index 70d1e2b..266a539 100644
--- a/pkg/messages/types/svcSetView.go
+++ b/pkg/messages/types/svcSetView.go
@@ -6,7 +6,7 @@ type SvcSetView struct {
         EntityIndex int16
 }
 
-func ParseSvcSetView(reader *bitreader.ReaderType) SvcSetView {
+func ParseSvcSetView(reader *bitreader.Reader) SvcSetView {
         return SvcSetView{
                 EntityIndex: int16(reader.TryReadBits(11)),
         }
diff --git a/pkg/messages/types/svcSounds.go b/pkg/messages/types/svcSounds.go
index e87d584..22d4a66 100644
--- a/pkg/messages/types/svcSounds.go
+++ b/pkg/messages/types/svcSounds.go
@@ -9,7 +9,7 @@ type SvcSounds struct {
         Data          []byte
 }
 
-func ParseSvcSounds(reader *bitreader.ReaderType) SvcSounds {
+func ParseSvcSounds(reader *bitreader.Reader) SvcSounds {
         svcSounds := SvcSounds{
                 ReliableSound: reader.TryReadBool(),
         }
@@ -20,6 +20,6 @@ func ParseSvcSounds(reader *bitreader.ReaderType) SvcSounds {
                 svcSounds.Size = int8(reader.TryReadBits(8))
                 svcSounds.Length = int16(reader.TryReadBits(16))
         }
-        svcSounds.Data = reader.TryReadBitsToSlice(int(svcSounds.Length))
+        svcSounds.Data = reader.TryReadBitsToSlice(uint64(svcSounds.Length))
         return svcSounds
 }
diff --git a/pkg/messages/types/svcSplitScreen.go b/pkg/messages/types/svcSplitScreen.go
index 9c808bc..3ba6ee8 100644
--- a/pkg/messages/types/svcSplitScreen.go
+++ b/pkg/messages/types/svcSplitScreen.go
@@ -8,11 +8,11 @@ type SvcSplitScreen struct {
         Data   []byte
 }
 
-func ParseSvcSplitScreen(reader *bitreader.ReaderType) SvcSplitScreen {
+func ParseSvcSplitScreen(reader *bitreader.Reader) SvcSplitScreen {
         svcSplitScreen := SvcSplitScreen{
                 Unk:    reader.TryReadBool(),
                 Length: int16(reader.TryReadBits(11)),
         }
-        svcSplitScreen.Data = reader.TryReadBitsToSlice(int(svcSplitScreen.Length))
+        svcSplitScreen.Data = reader.TryReadBitsToSlice(uint64(svcSplitScreen.Length))
         return svcSplitScreen
 }
diff --git a/pkg/messages/types/svcTempEntities.go b/pkg/messages/types/svcTempEntities.go
index d22423d..ca4b995 100644
--- a/pkg/messages/types/svcTempEntities.go
+++ b/pkg/messages/types/svcTempEntities.go
@@ -8,11 +8,11 @@ type SvcTempEntities struct {
         Data       []byte
 }
 
-func ParseSvcTempEntities(reader *bitreader.ReaderType) SvcTempEntities {
+func ParseSvcTempEntities(reader *bitreader.Reader) SvcTempEntities {
         svcTempEntities := SvcTempEntities{
                 NumEntries: int8(reader.TryReadBits(8)),
                 Length:     int32(reader.TryReadBits(17)),
         }
-        svcTempEntities.Data = reader.TryReadBitsToSlice(int(svcTempEntities.Length))
+        svcTempEntities.Data = reader.TryReadBitsToSlice(uint64(svcTempEntities.Length))
         return svcTempEntities
 }
diff --git a/pkg/messages/types/svcUpdateStringTable.go b/pkg/messages/types/svcUpdateStringTable.go
index 2840482..c606141 100644
--- a/pkg/messages/types/svcUpdateStringTable.go
+++ b/pkg/messages/types/svcUpdateStringTable.go
@@ -9,7 +9,7 @@ type SvcUpdateStringTable struct {
         Data              []byte
 }
 
-func ParseSvcUpdateStringTable(reader *bitreader.ReaderType) SvcUpdateStringTable {
+func ParseSvcUpdateStringTable(reader *bitreader.Reader) SvcUpdateStringTable {
         svcUpdateStringTable := SvcUpdateStringTable{
                 TableId: int8(reader.TryReadBits(5)),
         }
@@ -17,6 +17,6 @@ func ParseSvcUpdateStringTable(reader *bitreader.ReaderType) SvcUpdateStringTabl
                 svcUpdateStringTable.NumChangedEntries = int16(reader.TryReadBits(16))
         }
         svcUpdateStringTable.Length = int32(reader.TryReadBits(20))
-        svcUpdateStringTable.Data = reader.TryReadBitsToSlice(int(svcUpdateStringTable.Length))
+        svcUpdateStringTable.Data = reader.TryReadBitsToSlice(uint64(svcUpdateStringTable.Length))
         return svcUpdateStringTable
 }
diff --git a/pkg/messages/types/svcUserMessage.go b/pkg/messages/types/svcUserMessage.go
index b53c7c0..fb8be20 100644
--- a/pkg/messages/types/svcUserMessage.go
+++ b/pkg/messages/types/svcUserMessage.go
@@ -8,11 +8,11 @@ type SvcUserMessage struct {
         Data    []byte
 }
 
-func ParseSvcUserMessage(reader *bitreader.ReaderType) SvcUserMessage {
+func ParseSvcUserMessage(reader *bitreader.Reader) SvcUserMessage {
         svcUserMessage := SvcUserMessage{
                 MsgType: int8(reader.TryReadBits(8)),
                 Length:  int16(reader.TryReadBits(12)),
         }
-        svcUserMessage.Data = reader.TryReadBitsToSlice(int(svcUserMessage.Length))
+        svcUserMessage.Data = reader.TryReadBitsToSlice(uint64(svcUserMessage.Length))
         return svcUserMessage
 }
diff --git a/pkg/messages/types/svcVoiceData.go b/pkg/messages/types/svcVoiceData.go
index b6c81d4..9609d80 100644
--- a/pkg/messages/types/svcVoiceData.go
+++ b/pkg/messages/types/svcVoiceData.go
@@ -9,12 +9,12 @@ type SvcVoiceData struct {
         Data      []byte
 }
 
-func ParseSvcVoiceData(reader *bitreader.ReaderType) SvcVoiceData {
+func ParseSvcVoiceData(reader *bitreader.Reader) SvcVoiceData {
         svcVoiceData := SvcVoiceData{
                 Client:    int8(reader.TryReadBits(8)),
                 Proximity: int8(reader.TryReadBits(8)),
                 Length:    int16(reader.TryReadBits(16)),
         }
-        svcVoiceData.Data = reader.TryReadBitsToSlice(int(svcVoiceData.Length))
+        svcVoiceData.Data = reader.TryReadBitsToSlice(uint64(svcVoiceData.Length))
         return svcVoiceData
 }
diff --git a/pkg/messages/types/svcVoiceInit.go b/pkg/messages/types/svcVoiceInit.go
index 4c95aab..afabfc9 100644
--- a/pkg/messages/types/svcVoiceInit.go
+++ b/pkg/messages/types/svcVoiceInit.go
@@ -8,7 +8,7 @@ type SvcVoiceInit struct {
         Unk     float32
 }
 
-func ParseSvcVoiceInit(reader *bitreader.ReaderType) SvcVoiceInit {
+func ParseSvcVoiceInit(reader *bitreader.Reader) SvcVoiceInit {
         svcVoiceInit := SvcVoiceInit{
                 Codec:   reader.TryReadString(),
                 Quality: uint8(reader.TryReadBits(8)),
diff --git a/pkg/packets/headers.go b/pkg/packets/headers.go
index 543476b..dbeab87 100644
--- a/pkg/packets/headers.go
+++ b/pkg/packets/headers.go
@@ -20,19 +20,19 @@ type Headers struct {
         SignOnLength    int32
 }
 
-func ParseHeaders(reader *bitreader.ReaderType) Headers {
+func ParseHeaders(reader *bitreader.Reader) Headers {
         headers := Headers{
                 DemoFileStamp:   reader.TryReadString(),
-                DemoProtocol:    int32(reader.TryReadInt32()),
-                NetworkProtocol: int32(reader.TryReadInt32()),
-                ServerName:      reader.TryReadStringLen(260),
-                ClientName:      reader.TryReadStringLen(260),
-                MapName:         reader.TryReadStringLen(260),
-                GameDirectory:   reader.TryReadStringLen(260),
+                DemoProtocol:    int32(reader.TryReadSInt32()),
+                NetworkProtocol: int32(reader.TryReadSInt32()),
+                ServerName:      reader.TryReadStringLength(260),
+                ClientName:      reader.TryReadStringLength(260),
+                MapName:         reader.TryReadStringLength(260),
+                GameDirectory:   reader.TryReadStringLength(260),
                 PlaybackTime:    reader.TryReadFloat32(),
-                PlaybackTicks:   int32(reader.TryReadInt32()),
-                PlaybackFrames:  int32(reader.TryReadInt32()),
-                SignOnLength:    int32(reader.TryReadInt32()),
+                PlaybackTicks:   int32(reader.TryReadSInt32()),
+                PlaybackFrames:  int32(reader.TryReadSInt32()),
+                SignOnLength:    int32(reader.TryReadSInt32()),
         }
         if headers.DemoFileStamp != "HL2DEMO" {
                 panic("invalid demo file stamp")
diff --git a/pkg/packets/packets.go b/pkg/packets/packets.go
index a84da21..fd5a14b 100644
--- a/pkg/packets/packets.go
+++ b/pkg/packets/packets.go
@@ -1,8 +1,6 @@
 package packets
 
 import (
-        "bytes"
-
         "github.com/pektezol/bitreader"
         "github.com/pektezol/demoparser/pkg/classes"
         "github.com/pektezol/demoparser/pkg/messages"
@@ -15,9 +13,9 @@ type PacketMessageInfo struct {
         Data       any
 }
 
-const MSSC = 2
+const MSSC int = 2
 
-func ParsePackets(reader *bitreader.ReaderType) PacketMessageInfo {
+func ParsePackets(reader *bitreader.Reader) PacketMessageInfo {
         packetType := reader.TryReadBits(8)
         tickNumber := reader.TryReadBits(32)
         slotNumber := reader.TryReadBits(8)
@@ -30,9 +28,9 @@ func ParsePackets(reader *bitreader.ReaderType) PacketMessageInfo {
                 }
                 signOn.InSequence = int32(reader.TryReadBits(32))
                 signOn.OutSequence = int32(reader.TryReadBits(32))
-                signOn.Size = int32(reader.TryReadInt32())
-                data := reader.TryReadBytesToSlice(int(signOn.Size))
-                packetReader := bitreader.Reader(bytes.NewReader(data), true)
+                signOn.Size = int32(reader.TryReadSInt32())
+                data := reader.TryReadBytesToSlice(uint64(signOn.Size))
+                packetReader := bitreader.NewReaderFromBytes(data, true)
                 for {
                         messageType, err := packetReader.ReadBits(6)
                         if err != nil {
@@ -48,9 +46,9 @@ func ParsePackets(reader *bitreader.ReaderType) PacketMessageInfo {
                 }
                 packet.InSequence = int32(reader.TryReadBits(32))
                 packet.OutSequence = int32(reader.TryReadBits(32))
-                packet.Size = int32(reader.TryReadInt32())
-                data := reader.TryReadBytesToSlice(int(packet.Size))
-                packetReader := bitreader.Reader(bytes.NewReader(data), true)
+                packet.Size = int32(reader.TryReadSInt32())
+                data := reader.TryReadBytesToSlice(uint64(packet.Size))
+                packetReader := bitreader.NewReaderFromBytes(data, true)
                 for {
                         messageType, err := packetReader.ReadBits(6)
                         if err != nil {
@@ -63,24 +61,24 @@ func ParsePackets(reader *bitreader.ReaderType) PacketMessageInfo {
                 syncTick := SyncTick{}
                 packetData = syncTick
         case 4: // ConsoleCmd
-                size := reader.TryReadInt32()
+                size := reader.TryReadSInt32()
                 consoleCmd := ConsoleCmd{
                         Size: int32(size),
-                        Data: reader.TryReadStringLen(int(size)),
+                        Data: reader.TryReadStringLength(uint64(size)),
                 }
                 packetData = consoleCmd
         case 5: // UserCmd
                 userCmd := UserCmd{}
-                userCmd.Cmd = int32(reader.TryReadInt32())
-                userCmd.Size = int32(reader.TryReadInt32())
-                data := reader.TryReadBytesToSlice(int(userCmd.Size))
+                userCmd.Cmd = int32(reader.TryReadSInt32())
+                userCmd.Size = int32(reader.TryReadSInt32())
+                data := reader.TryReadBytesToSlice(uint64(userCmd.Size))
                 userCmd.Data = classes.ParseUserCmdInfo(data)
                 packetData = userCmd
         case 6: // DataTables
                 dataTables := DataTables{}
-                dataTables.Size = int32(reader.TryReadInt32())
-                data := reader.TryReadBytesToSlice(int(dataTables.Size))
-                dataTableReader := bitreader.Reader(bytes.NewReader(data), true)
+                dataTables.Size = int32(reader.TryReadSInt32())
+                data := reader.TryReadBytesToSlice(uint64(dataTables.Size))
+                dataTableReader := bitreader.NewReaderFromBytes(data, true)
                 count := 0
                 for dataTableReader.TryReadBool() {
                         count++
@@ -94,8 +92,7 @@ func ParsePackets(reader *bitreader.ReaderType) PacketMessageInfo {
         case 7: // Stop
                 stop := Stop{}
                 if reader.TryReadBool() {
-                        // read remaining data
-                        stop.RemainingData = []byte{}
+                        stop.RemainingData = reader.TryReadBitsToSlice(uint64(reader.TryReadRemainingBits()))
                 }
                 packetData = stop
         case 8: // CustomData
@@ -103,14 +100,24 @@ func ParsePackets(reader *bitreader.ReaderType) PacketMessageInfo {
                         Unknown: int32(reader.TryReadBits(32)),
                         Size:    int32(reader.TryReadBits(32)),
                 }
-                customData.Data = string(reader.TryReadBytesToSlice(int(customData.Size)))
-                packetData = customData
+                if customData.Unknown != 0 || customData.Size == 8 {
+                        // Not SAR data
+                        customData.Data = string(reader.TryReadBytesToSlice(uint64(customData.Size)))
+                        packetData = customData
+                        break
+                }
+                // SAR data
+                sarData := classes.SarData{}
+                data := reader.TryReadBytesToSlice(uint64(customData.Size))
+                sarReader := bitreader.NewReaderFromBytes(data, true)
+                sarData.ParseSarData(sarReader)
+                packetData = sarData
         case 9: // StringTables
                 stringTables := StringTables{
-                        Size: int32(reader.TryReadInt32()),
+                        Size: int32(reader.TryReadSInt32()),
                 }
-                data := reader.TryReadBytesToSlice(int(stringTables.Size))
-                stringTableReader := bitreader.Reader(bytes.NewReader(data), true)
+                data := reader.TryReadBytesToSlice(uint64(stringTables.Size))
+                stringTableReader := bitreader.NewReaderFromBytes(data, true)
                 stringTables.Data = classes.ParseStringTables(stringTableReader)
                 packetData = stringTables
         default: // invalid