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parser.go
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parser.go
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package sendtables2
import (
"fmt"
"math"
"strings"
"google.golang.org/protobuf/proto"
bit "github.com/markus-wa/demoinfocs-golang/v4/internal/bitread"
"github.com/markus-wa/demoinfocs-golang/v4/pkg/demoinfocs/msgs2"
st "github.com/markus-wa/demoinfocs-golang/v4/pkg/demoinfocs/sendtables"
)
/*
from demoinfo2.txt:
// referenced components require pointer indirection
DemoTypeAlias_t { m_TypeAlias = "CBodyComponentDCGBaseAnimating" m_UnderlyingType = "CBodyComponentDCGBaseAnimating*" },
DemoTypeAlias_t { m_TypeAlias = "CBodyComponentBaseAnimating" m_UnderlyingType = "CBodyComponentBaseAnimating*" },
DemoTypeAlias_t { m_TypeAlias = "CBodyComponentBaseAnimatingOverlay" m_UnderlyingType = "CBodyComponentBaseAnimatingOverlay*" },
DemoTypeAlias_t { m_TypeAlias = "CBodyComponentBaseModelEntity" m_UnderlyingType = "CBodyComponentBaseModelEntity*" },
DemoTypeAlias_t { m_TypeAlias = "CBodyComponent" m_UnderlyingType = "CBodyComponent*" },
DemoTypeAlias_t { m_TypeAlias = "CBodyComponentSkeletonInstance" m_UnderlyingType = "CBodyComponentSkeletonInstance*" },
DemoTypeAlias_t { m_TypeAlias = "CBodyComponentPoint" m_UnderlyingType = "CBodyComponentPoint*" },
DemoTypeAlias_t { m_TypeAlias = "CLightComponent" m_UnderlyingType = "CLightComponent*" },
DemoTypeAlias_t { m_TypeAlias = "CRenderComponent" m_UnderlyingType = "CRenderComponent*" },
// this is legacy, would be good candidate to use demo file upconversion to remove?
DemoTypeAlias_t { m_TypeAlias = "CPhysicsComponent" m_UnderlyingType = "CPhysicsComponent*" },
*/
var pointerTypes = map[string]bool{
// "PhysicsRagdollPose_t": true,
// "CEntityIdentity": true,
// "CPlayerLocalData": true,
// "CPlayer_CameraServices": true,
"CBodyComponentDCGBaseAnimating": true,
"CBodyComponentBaseAnimating": true,
"CBodyComponentBaseAnimatingOverlay": true,
"CBodyComponentBaseModelEntity": true,
"CBodyComponent": true,
"CBodyComponentSkeletonInstance": true,
"CBodyComponentPoint": true,
"CLightComponent": true,
"CRenderComponent": true,
"CPhysicsComponent": true,
}
var itemCounts = map[string]int{
"MAX_ITEM_STOCKS": 8,
"MAX_ABILITY_DRAFT_ABILITIES": 48,
}
type Parser struct {
serializers map[string]*serializer
classIdSize uint32
classBaselines map[int32][]byte
classesById map[int32]*class
classesByName map[string]*class
entityFullPackets int
entities map[int32]*Entity
entityHandlers []st.EntityHandler
}
func (p *Parser) ReadEnterPVS(r *bit.BitReader, index int, entities map[int]st.Entity, slot int) st.Entity {
panic("implement me")
}
type serverClasses Parser
func (sc *serverClasses) All() (res []st.ServerClass) {
for _, c := range sc.classesById {
res = append(res, c)
}
return
}
func (sc *serverClasses) FindByName(name string) st.ServerClass {
class := sc.classesByName[name]
if class == nil {
return nil
}
return sc.classesByName[name]
}
func (sc *serverClasses) String() string {
names := make([]string, 0, len(sc.classesById))
for _, c := range sc.classesById {
names = append(names, c.name)
}
return strings.Join(names, "\n")
}
func (p *Parser) ServerClasses() st.ServerClasses {
return (*serverClasses)(p)
}
func NewParser() *Parser {
return &Parser{
serializers: make(map[string]*serializer),
classBaselines: make(map[int32][]byte),
classesById: make(map[int32]*class),
classesByName: make(map[string]*class),
entities: make(map[int32]*Entity),
}
}
// Internal callback for OnCSVCMsg_ServerInfo.
func (p *Parser) OnServerInfo(m *msgs2.CSVCMsg_ServerInfo) error {
// This may be needed to parse PacketEntities.
p.classIdSize = uint32(math.Log(float64(m.GetMaxClasses()))/math.Log(2)) + 1
return nil
}
func (p *Parser) OnDemoClassInfo(m *msgs2.CDemoClassInfo) error {
for _, c := range m.GetClasses() {
classId := c.GetClassId()
networkName := c.GetNetworkName()
class := &class{
classId: classId,
name: networkName,
serializer: p.serializers[networkName],
fpNameCache: &fpNameTreeCache{
next: make(map[int]*fpNameTreeCache),
},
}
p.classesById[class.classId] = class
p.classesByName[class.name] = class
}
return nil
}
// SetInstanceBaseline sets the raw instance-baseline data for a serverclass by ID.
//
// Intended for internal use only.
func (p *Parser) SetInstanceBaseline(scID int, data []byte) {
if scID < 0 || scID > math.MaxInt32 {
panic(fmt.Sprintf("scID %d is out of bounds", scID))
}
p.classBaselines[int32(scID)] = data
}
func (p *Parser) ParsePacket(b []byte) error {
r := newReader(b)
buf := r.readBytes(r.readVarUint32())
msg := &msgs2.CSVCMsg_FlattenedSerializer{}
if err := proto.Unmarshal(buf, msg); err != nil {
return err
}
fields := map[int32]*field{}
fieldTypes := map[string]*fieldType{}
for _, s := range msg.GetSerializers() {
serializer := newSerializer(
msg.GetSymbols()[s.GetSerializerNameSym()],
s.GetSerializerVersion(),
)
for _, i := range s.GetFieldsIndex() {
if _, ok := fields[i]; !ok {
// create a new field
field := newField(p.serializers, msg, msg.GetFields()[i])
// dotabuff/manta patches parent name in builds <= 990
// if p.gameBuild <= 990 {
// field.parentName = serializer.name
//}
// find or create a field type
if _, ok := fieldTypes[field.varType]; !ok {
fieldTypes[field.varType] = newFieldType(field.varType)
}
field.fieldType = fieldTypes[field.varType]
// find associated serializer
if field.serializerName != "" {
field.serializer = p.serializers[field.serializerName]
}
// apply any build-specific patches to the field
for _, h := range fieldPatches {
h.patch(field)
}
// determine field model
if field.serializer != nil {
if field.fieldType.pointer || pointerTypes[field.fieldType.baseType] {
field.setModel(fieldModelFixedTable)
} else {
field.setModel(fieldModelVariableTable)
}
} else if field.fieldType.count > 0 && field.fieldType.baseType != "char" {
field.setModel(fieldModelFixedArray)
} else if field.fieldType.baseType == "CUtlVector" || field.fieldType.baseType == "CNetworkUtlVectorBase" {
field.setModel(fieldModelVariableArray)
} else {
field.setModel(fieldModelSimple)
}
// store the field
fields[i] = field
}
// add the field to the serializer
serializer.addField(fields[i])
}
// store the serializer for field reference
p.serializers[serializer.name] = serializer
if _, ok := p.classesByName[serializer.name]; ok {
p.classesByName[serializer.name].serializer = serializer
}
}
return nil
}