This repository has been archived on 2024-06-13. You can view files and clone it, but cannot push or open issues or pull requests.
2020-08-04 13:13:01 -04:00

748 lines
30 KiB
C++

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
// $NoKeywords: $
//
//=============================================================================//
#ifndef DATATABLE_SEND_H
#define DATATABLE_SEND_H
#ifdef _WIN32
#pragma once
#endif
#include "bitvec.h"
#include "const.h"
#include "dt_common.h"
#include "tier0/dbg.h"
// ------------------------------------------------------------------------ //
// Send proxies can be used to convert a variable into a networkable type
// (a good example is converting an edict pointer into an integer index).
// These allow you to translate data. For example, if you had a user-entered
// string number like "10" (call the variable pUserStr) and wanted to encode
// it as an integer, you would use a SendPropInt32 and write a proxy that said:
// pOut->m_Int = atoi(pUserStr);
// pProp : the SendProp that has the proxy
// pStructBase : the base structure (like CBaseEntity*).
// pData : the address of the variable to proxy.
// pOut : where to output the proxied value.
// iElement : the element index if this data is part of an array (or 0 if
// not). objectID : entity index for debugging purposes.
// Return false if you don't want the engine to register and send a delta to
// the clients for this property (regardless of whether it actually changed or
// not).
// ------------------------------------------------------------------------ //
typedef void (*SendVarProxyFn)(const SendProp *pProp, const void *pStructBase,
const void *pData, DVariant *pOut, int iElement,
int objectID);
// Return the pointer to the data for the datatable.
// If the proxy returns null, it's the same as if
// pRecipients->ClearAllRecipients() was called.
class CSendProxyRecipients;
typedef void *(*SendTableProxyFn)(const SendProp *pProp,
const void *pStructBase, const void *pData,
CSendProxyRecipients *pRecipients,
int objectID);
class CNonModifiedPointerProxy {
public:
CNonModifiedPointerProxy(SendTableProxyFn fn);
public:
SendTableProxyFn m_Fn;
CNonModifiedPointerProxy *m_pNext;
};
// This tells the engine that the send proxy will not modify the pointer
// - it only plays with the recipients. This must be set on proxies that work
// this way, otherwise the engine can't track which properties changed
// in NetworkStateChanged().
#define REGISTER_SEND_PROXY_NON_MODIFIED_POINTER(sendProxyFn) \
static CNonModifiedPointerProxy __proxy_##sendProxyFn(sendProxyFn);
class CStandardSendProxiesV1 {
public:
CStandardSendProxiesV1();
SendVarProxyFn m_Int8ToInt32;
SendVarProxyFn m_Int16ToInt32;
SendVarProxyFn m_Int32ToInt32;
SendVarProxyFn m_UInt8ToInt32;
SendVarProxyFn m_UInt16ToInt32;
SendVarProxyFn m_UInt32ToInt32;
SendVarProxyFn m_FloatToFloat;
SendVarProxyFn m_VectorToVector;
#ifdef SUPPORTS_INT64
SendVarProxyFn m_Int64ToInt64;
SendVarProxyFn m_UInt64ToInt64;
#endif
};
class CStandardSendProxies : public CStandardSendProxiesV1 {
public:
CStandardSendProxies();
SendTableProxyFn m_DataTableToDataTable;
SendTableProxyFn m_SendLocalDataTable;
CNonModifiedPointerProxy **m_ppNonModifiedPointerProxies;
};
extern CStandardSendProxies g_StandardSendProxies;
// Max # of datatable send proxies you can have in a tree.
#define MAX_DATATABLE_PROXIES 32
// ------------------------------------------------------------------------ //
// Datatable send proxies are used to tell the engine where the datatable's
// data is and to specify which clients should get the data.
//
// pRecipients is the object that allows you to specify which clients will
// receive the data.
// ------------------------------------------------------------------------ //
class CSendProxyRecipients {
public:
void SetAllRecipients(); // Note: recipients are all set by default when
// each proxy is called.
void ClearAllRecipients();
void SetRecipient(
int iClient); // Note: these are CLIENT indices, not entity indices (so
// the first player's index is 0).
void ClearRecipient(int iClient);
// Clear all recipients and set only the specified one.
void SetOnly(int iClient);
public:
// Make sure we have enough room for the max possible player count
CBitVec<ABSOLUTE_PLAYER_LIMIT> m_Bits;
};
inline void CSendProxyRecipients::SetAllRecipients() { m_Bits.SetAll(); }
inline void CSendProxyRecipients::ClearAllRecipients() { m_Bits.ClearAll(); }
inline void CSendProxyRecipients::SetRecipient(int iClient) {
m_Bits.Set(iClient);
}
inline void CSendProxyRecipients::ClearRecipient(int iClient) {
m_Bits.Clear(iClient);
}
inline void CSendProxyRecipients::SetOnly(int iClient) {
m_Bits.ClearAll();
m_Bits.Set(iClient);
}
// ------------------------------------------------------------------------ //
// ArrayLengthSendProxies are used when you want to specify an array's length
// dynamically.
// ------------------------------------------------------------------------ //
typedef int (*ArrayLengthSendProxyFn)(const void *pStruct, int objectID);
class RecvProp;
class SendTable;
class CSendTablePrecalc;
// --------------------------------------------------------------------------------------------------------------
// // SendProp.
// --------------------------------------------------------------------------------------------------------------
// //
// If SendProp::GetDataTableProxyIndex() returns this, then the proxy is one
// that always sends the data to all clients, so we don't need to store the
// results.
#define DATATABLE_PROXY_INDEX_NOPROXY 255
#define DATATABLE_PROXY_INDEX_INVALID 254
class SendProp {
public:
SendProp();
virtual ~SendProp();
void Clear();
int GetOffset() const;
void SetOffset(int i);
SendVarProxyFn GetProxyFn() const;
void SetProxyFn(SendVarProxyFn f);
SendTableProxyFn GetDataTableProxyFn() const;
void SetDataTableProxyFn(SendTableProxyFn f);
SendTable *GetDataTable() const;
void SetDataTable(SendTable *pTable);
char const *GetExcludeDTName() const;
// If it's one of the numbered "000", "001", etc properties in an array,
// then these can be used to get its array property name for debugging.
const char *GetParentArrayPropName() const;
void SetParentArrayPropName(char *pArrayPropName);
const char *GetName() const;
bool IsSigned() const;
bool IsExcludeProp() const;
bool IsInsideArray() const; // Returns true if SPROP_INSIDEARRAY is set.
void SetInsideArray();
// Arrays only.
void SetArrayProp(SendProp *pProp);
SendProp *GetArrayProp() const;
// Arrays only.
void SetArrayLengthProxy(ArrayLengthSendProxyFn fn);
ArrayLengthSendProxyFn GetArrayLengthProxy() const;
int GetNumElements() const;
void SetNumElements(int nElements);
// Return the # of bits to encode an array length (must hold
// GetNumElements()).
int GetNumArrayLengthBits() const;
int GetElementStride() const;
SendPropType GetType() const;
int GetFlags() const;
void SetFlags(int flags);
// Some property types bind more data to the SendProp in here.
const void *GetExtraData() const;
void SetExtraData(const void *pData);
public:
RecvProp *m_pMatchingRecvProp; // This is temporary and only used while
// precalculating data for the decoders.
SendPropType m_Type;
int m_nBits;
float m_fLowValue;
float m_fHighValue;
SendProp *m_pArrayProp; // If this is an array, this is the property that
// defines each array element.
ArrayLengthSendProxyFn
m_ArrayLengthProxy; // This callback returns the array length.
int m_nElements; // Number of elements in the array (or 1 if it's not an
// array).
int m_ElementStride; // Pointer distance between array elements.
const char
*m_pExcludeDTName; // If this is an exclude prop, then this is the name
// of the datatable to exclude a prop from.
const char *m_pParentArrayPropName;
const char *m_pVarName;
float m_fHighLowMul;
private:
int m_Flags; // SPROP_ flags.
SendVarProxyFn m_ProxyFn; // NULL for DPT_DataTable.
SendTableProxyFn m_DataTableProxyFn; // Valid for DPT_DataTable.
SendTable *m_pDataTable;
// SENDPROP_VECTORELEM makes this negative to start with so we can detect
// that and set the SPROP_IS_VECTOR_ELEM flag.
int m_Offset;
// Extra data bound to this property.
const void *m_pExtraData;
};
inline int SendProp::GetOffset() const { return m_Offset; }
inline void SendProp::SetOffset(int i) { m_Offset = i; }
inline SendVarProxyFn SendProp::GetProxyFn() const {
Assert(m_Type != DPT_DataTable);
return m_ProxyFn;
}
inline void SendProp::SetProxyFn(SendVarProxyFn f) { m_ProxyFn = f; }
inline SendTableProxyFn SendProp::GetDataTableProxyFn() const {
Assert(m_Type == DPT_DataTable);
return m_DataTableProxyFn;
}
inline void SendProp::SetDataTableProxyFn(SendTableProxyFn f) {
m_DataTableProxyFn = f;
}
inline SendTable *SendProp::GetDataTable() const { return m_pDataTable; }
inline void SendProp::SetDataTable(SendTable *pTable) { m_pDataTable = pTable; }
inline char const *SendProp::GetExcludeDTName() const {
return m_pExcludeDTName;
}
inline const char *SendProp::GetParentArrayPropName() const {
return m_pParentArrayPropName;
}
inline void SendProp::SetParentArrayPropName(char *pArrayPropName) {
Assert(!m_pParentArrayPropName);
m_pParentArrayPropName = pArrayPropName;
}
inline const char *SendProp::GetName() const { return m_pVarName; }
inline bool SendProp::IsSigned() const { return !(m_Flags & SPROP_UNSIGNED); }
inline bool SendProp::IsExcludeProp() const {
return (m_Flags & SPROP_EXCLUDE) != 0;
}
inline bool SendProp::IsInsideArray() const {
return (m_Flags & SPROP_INSIDEARRAY) != 0;
}
inline void SendProp::SetInsideArray() { m_Flags |= SPROP_INSIDEARRAY; }
inline void SendProp::SetArrayProp(SendProp *pProp) { m_pArrayProp = pProp; }
inline SendProp *SendProp::GetArrayProp() const { return m_pArrayProp; }
inline void SendProp::SetArrayLengthProxy(ArrayLengthSendProxyFn fn) {
m_ArrayLengthProxy = fn;
}
inline ArrayLengthSendProxyFn SendProp::GetArrayLengthProxy() const {
return m_ArrayLengthProxy;
}
inline int SendProp::GetNumElements() const { return m_nElements; }
inline void SendProp::SetNumElements(int nElements) { m_nElements = nElements; }
inline int SendProp::GetElementStride() const { return m_ElementStride; }
inline SendPropType SendProp::GetType() const { return m_Type; }
inline int SendProp::GetFlags() const { return m_Flags; }
inline void SendProp::SetFlags(int flags) {
// Make sure they're using something from the valid set of flags.
Assert(!(flags & ~((1 << SPROP_NUMFLAGBITS) - 1)));
m_Flags = flags;
}
inline const void *SendProp::GetExtraData() const { return m_pExtraData; }
inline void SendProp::SetExtraData(const void *pData) { m_pExtraData = pData; }
// --------------------------------------------------------------------------------------------------------------
// // SendTable.
// --------------------------------------------------------------------------------------------------------------
// //
class SendTable {
public:
typedef SendProp PropType;
SendTable();
SendTable(SendProp *pProps, int nProps, const char *pNetTableName);
~SendTable();
void Construct(SendProp *pProps, int nProps, const char *pNetTableName);
const char *GetName() const;
int GetNumProps() const;
SendProp *GetProp(int i);
// Used by the engine.
bool IsInitialized() const;
void SetInitialized(bool bInitialized);
// Used by the engine while writing info into the signon.
void SetWriteFlag(bool bHasBeenWritten);
bool GetWriteFlag() const;
bool HasPropsEncodedAgainstTickCount() const;
void SetHasPropsEncodedAgainstTickcount(bool bState);
public:
SendProp *m_pProps;
int m_nProps;
const char *m_pNetTableName; // The name matched between client and server.
// The engine hooks the SendTable here.
CSendTablePrecalc *m_pPrecalc;
protected:
bool m_bInitialized : 1;
bool m_bHasBeenWritten : 1;
bool m_bHasPropsEncodedAgainstCurrentTickCount : 1; // m_flSimulationTime
// and m_flAnimTime,
// e.g.
};
inline const char *SendTable::GetName() const { return m_pNetTableName; }
inline int SendTable::GetNumProps() const { return m_nProps; }
inline SendProp *SendTable::GetProp(int i) {
Assert(i >= 0 && i < m_nProps);
return &m_pProps[i];
}
inline bool SendTable::IsInitialized() const { return m_bInitialized; }
inline void SendTable::SetInitialized(bool bInitialized) {
m_bInitialized = bInitialized;
}
inline bool SendTable::GetWriteFlag() const { return m_bHasBeenWritten; }
inline void SendTable::SetWriteFlag(bool bHasBeenWritten) {
m_bHasBeenWritten = bHasBeenWritten;
}
inline bool SendTable::HasPropsEncodedAgainstTickCount() const {
return m_bHasPropsEncodedAgainstCurrentTickCount;
}
inline void SendTable::SetHasPropsEncodedAgainstTickcount(bool bState) {
m_bHasPropsEncodedAgainstCurrentTickCount = bState;
}
// ------------------------------------------------------------------------------------------------------
// // Use BEGIN_SEND_TABLE if you want to declare a SendTable and have it
// inherit all the properties from its base class. There are two requirements
// for this to work:
// 1. Its base class must have a static SendTable pointer member variable called
// m_pClassSendTable which
// points to its send table. The DECLARE_SERVERCLASS and
// IMPLEMENT_SERVERCLASS macros do this automatically.
// 2. Your class must typedef its base class as BaseClass. So it would look like
// this:
// class Derived : public CBaseEntity
// {
// typedef CBaseEntity BaseClass;
// };
// If you don't want to interit a base class's properties, use
// BEGIN_SEND_TABLE_NOBASE.
// ------------------------------------------------------------------------------------------------------
// //
#define BEGIN_SEND_TABLE(className, tableName) \
BEGIN_SEND_TABLE_NOBASE(className, tableName) \
SendPropDataTable("baseclass", 0, className::BaseClass::m_pClassSendTable, \
SendProxy_DataTableToDataTable),
#define BEGIN_SEND_TABLE_NOBASE(className, tableName) \
template <typename T> \
int ServerClassInit(T *); \
namespace tableName { \
struct ignored; \
} \
template <> \
int ServerClassInit<tableName::ignored>(tableName::ignored *); \
namespace tableName { \
SendTable g_SendTable; \
int g_SendTableInit = ServerClassInit((tableName::ignored *)NULL); \
} \
template <> \
int ServerClassInit<tableName::ignored>(tableName::ignored *) { \
typedef className currentSendDTClass; \
static const char *g_pSendTableName = #tableName; \
SendTable &sendTable = tableName::g_SendTable; \
static SendProp g_SendProps[] = { \
SendPropInt( \
"should_never_see_this", 0, \
sizeof(int)), // It adds a dummy property at the start so you
// can define "empty" SendTables.
#define END_SEND_TABLE() \
} \
; \
sendTable.Construct(g_SendProps + 1, \
sizeof(g_SendProps) / sizeof(SendProp) - 1, \
g_pSendTableName); \
return 1; \
}
// These can simplify creating the variables.
// Note: currentSendDTClass::MakeANetworkVar_##varName equates to
// currentSendDTClass. It's there as a check to make sure all networked
// variables use the CNetworkXXXX macros in network_var.h.
#define SENDINFO(varName) \
#varName, \
offsetof(currentSendDTClass::MakeANetworkVar_##varName, varName), \
sizeof(((currentSendDTClass *)0)->varName)
#define SENDINFO_ARRAY(varName) \
#varName, \
offsetof(currentSendDTClass::MakeANetworkVar_##varName, varName), \
sizeof(((currentSendDTClass *)0)->varName[0])
#define SENDINFO_ARRAY3(varName) \
#varName, \
offsetof(currentSendDTClass::MakeANetworkVar_##varName, varName), \
sizeof(((currentSendDTClass *)0)->varName[0]), \
sizeof(((currentSendDTClass *)0)->varName) / \
sizeof(((currentSendDTClass *)0)->varName[0])
#define SENDINFO_ARRAYELEM(varName, i) \
#varName "[" #i "]", \
offsetof(currentSendDTClass::MakeANetworkVar_##varName, varName[i]), \
sizeof(((currentSendDTClass *)0)->varName[0])
#define SENDINFO_NETWORKARRAYELEM(varName, i) \
#varName "[" #i "]", \
offsetof(currentSendDTClass::MakeANetworkVar_##varName, \
varName.m_Value[i]), \
sizeof(((currentSendDTClass *)0)->varName.m_Value[0])
// NOTE: Be VERY careful to specify any other vector elems for the same vector
// IN ORDER and right after each other, otherwise it might miss the Y or Z
// component in SP.
//
// Note: this macro specifies a negative offset so the engine can detect it and
// setup m_pNext
#define SENDINFO_VECTORELEM(varName, i) \
#varName "[" #i "]", \
-(int)offsetof(currentSendDTClass::MakeANetworkVar_##varName, \
varName.m_Value[i]), \
sizeof(((currentSendDTClass *)0)->varName.m_Value[0])
#define SENDINFO_STRUCTELEM(varName) \
#varName, offsetof(currentSendDTClass, varName), \
sizeof(((currentSendDTClass *)0)->varName.m_Value)
#define SENDINFO_STRUCTARRAYELEM(varName, i) \
#varName "[" #i "]", offsetof(currentSendDTClass, varName.m_Value[i]), \
sizeof(((currentSendDTClass *)0)->varName.m_Value[0])
// Use this when you're not using a CNetworkVar to represent the data you're
// sending.
#define SENDINFO_NOCHECK(varName) \
#varName, offsetof(currentSendDTClass, varName), \
sizeof(((currentSendDTClass *)0)->varName)
#define SENDINFO_STRING_NOCHECK(varName) \
#varName, offsetof(currentSendDTClass, varName)
#define SENDINFO_DT(varName) #varName, offsetof(currentSendDTClass, varName)
#define SENDINFO_DT_NAME(varName, remoteVarName) \
#remoteVarName, offsetof(currentSendDTClass, varName)
#define SENDINFO_NAME(varName, remoteVarName) \
#remoteVarName, offsetof(currentSendDTClass, varName), \
sizeof(((currentSendDTClass *)0)->varName)
// ------------------------------------------------------------------------ //
// Built-in proxy types.
// See the definition of SendVarProxyFn for information about these.
// ------------------------------------------------------------------------ //
void SendProxy_QAngles(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
void SendProxy_AngleToFloat(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
void SendProxy_FloatToFloat(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
void SendProxy_VectorToVector(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
void SendProxy_VectorXYToVectorXY(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut,
int iElement, int objectID);
#if 0 // We can't ship this since it changes the size of DTVariant to be 20
// bytes instead of 16 and that breaks MODs!!!
void SendProxy_QuaternionToQuaternion( const SendProp *pProp, const void *pStruct, const void *pData, DVariant *pOut, int iElement, int objectID );
#endif
void SendProxy_Int8ToInt32(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
void SendProxy_Int16ToInt32(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
void SendProxy_Int32ToInt32(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
#ifdef SUPPORTS_INT64
void SendProxy_Int64ToInt64(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
#endif
void SendProxy_StringToString(const SendProp *pProp, const void *pStruct,
const void *pData, DVariant *pOut, int iElement,
int objectID);
// pData is the address of a data table.
void *SendProxy_DataTableToDataTable(const SendProp *pProp,
const void *pStructBase, const void *pData,
CSendProxyRecipients *pRecipients,
int objectID);
// pData is the address of a pointer to a data table.
void *SendProxy_DataTablePtrToDataTable(const SendProp *pProp,
const void *pStructBase,
const void *pData,
CSendProxyRecipients *pRecipients,
int objectID);
// Used on player entities - only sends the data to the local player
// (objectID-1).
void *SendProxy_SendLocalDataTable(const SendProp *pProp, const void *pStruct,
const void *pVarData,
CSendProxyRecipients *pRecipients,
int objectID);
// ------------------------------------------------------------------------ //
// Use these functions to setup your data tables.
// ------------------------------------------------------------------------ //
SendProp SendPropFloat(
const char *pVarName, // Variable name.
int offset, // Offset into container structure.
int sizeofVar = SIZEOF_IGNORE,
int nBits = 32, // Number of bits to use when encoding.
int flags = 0,
float fLowValue = 0.0f, // For floating point, low and high values.
float fHighValue =
HIGH_DEFAULT, // High value. If HIGH_DEFAULT, it's (1<<nBits).
SendVarProxyFn varProxy = SendProxy_FloatToFloat);
SendProp SendPropVector(
const char *pVarName, int offset, int sizeofVar = SIZEOF_IGNORE,
int nBits = 32, // Number of bits (for each floating-point component) to
// use when encoding.
int flags = SPROP_NOSCALE,
float fLowValue = 0.0f, // For floating point, low and high values.
float fHighValue =
HIGH_DEFAULT, // High value. If HIGH_DEFAULT, it's (1<<nBits).
SendVarProxyFn varProxy = SendProxy_VectorToVector);
SendProp SendPropVectorXY(
const char *pVarName, int offset, int sizeofVar = SIZEOF_IGNORE,
int nBits = 32, // Number of bits (for each floating-point component) to
// use when encoding.
int flags = SPROP_NOSCALE,
float fLowValue = 0.0f, // For floating point, low and high values.
float fHighValue =
HIGH_DEFAULT, // High value. If HIGH_DEFAULT, it's (1<<nBits).
SendVarProxyFn varProxy = SendProxy_VectorXYToVectorXY);
#if 0 // We can't ship this since it changes the size of DTVariant to be 20
// bytes instead of 16 and that breaks MODs!!!
SendProp SendPropQuaternion(
const char *pVarName,
int offset,
int sizeofVar=SIZEOF_IGNORE,
int nBits=32, // Number of bits (for each floating-point component) to use when encoding.
int flags=SPROP_NOSCALE,
float fLowValue=0.0f, // For floating point, low and high values.
float fHighValue=HIGH_DEFAULT, // High value. If HIGH_DEFAULT, it's (1<<nBits).
SendVarProxyFn varProxy=SendProxy_QuaternionToQuaternion
);
#endif
SendProp SendPropAngle(const char *pVarName, int offset,
int sizeofVar = SIZEOF_IGNORE, int nBits = 32,
int flags = 0,
SendVarProxyFn varProxy = SendProxy_AngleToFloat);
SendProp SendPropQAngles(const char *pVarName, int offset,
int sizeofVar = SIZEOF_IGNORE, int nBits = 32,
int flags = 0,
SendVarProxyFn varProxy = SendProxy_QAngles);
SendProp SendPropInt(
const char *pVarName, int offset,
int sizeofVar = SIZEOF_IGNORE, // Handled by SENDINFO macro.
int nBits = -1, // Set to -1 to automatically pick (max) number of bits
// based on size of element.
int flags = 0, SendVarProxyFn varProxy = 0);
inline SendProp SendPropModelIndex(const char *pVarName, int offset,
int sizeofVar = SIZEOF_IGNORE) {
return SendPropInt(pVarName, offset, sizeofVar, SP_MODEL_INDEX_BITS, 0);
}
SendProp SendPropString(const char *pVarName, int offset, int bufferLen,
int flags = 0,
SendVarProxyFn varProxy = SendProxy_StringToString);
// The data table encoder looks at DVariant::m_pData.
SendProp SendPropDataTable(
const char *pVarName, int offset, SendTable *pTable,
SendTableProxyFn varProxy = SendProxy_DataTableToDataTable);
SendProp SendPropArray3(
const char *pVarName, int offset, int sizeofVar, int elements,
SendProp pArrayProp,
SendTableProxyFn varProxy = SendProxy_DataTableToDataTable);
// Use the macro to let it automatically generate a table name. You shouldn't
// ever need to reference the table name. If you want to exclude this array,
// then reference the name of the variable in varTemplate.
SendProp InternalSendPropArray(const int elementCount, const int elementStride,
const char *pName, ArrayLengthSendProxyFn proxy);
// Use this and pass the array name and it will figure out the count and stride
// automatically.
#define SendPropArray(varTemplate, arrayName) \
SendPropVariableLengthArray(0, varTemplate, arrayName)
//
// Use this when you want to send a variable-length array of data but there is
// no physical array you can point it at. You need to provide:
// 1. A proxy function that returns the current length of the array.
// 2. The maximum length the array will ever be.
// 2. A SendProp describing what the elements are comprised of.
// 3. In the SendProp, you'll want to specify a proxy function so you can go
// grab the data from wherever it is.
// 4. A property name that matches the definition on the client.
//
#define SendPropVirtualArray(arrayLengthSendProxy, maxArrayLength, \
varTemplate, propertyName) \
varTemplate, InternalSendPropArray(maxArrayLength, 0, #propertyName, \
arrayLengthSendProxy)
#define SendPropVariableLengthArray(arrayLengthSendProxy, varTemplate, \
arrayName) \
varTemplate, InternalSendPropArray( \
sizeof(((currentSendDTClass *)0)->arrayName) / \
PROPSIZEOF(currentSendDTClass, arrayName[0]), \
PROPSIZEOF(currentSendDTClass, arrayName[0]), #arrayName, \
arrayLengthSendProxy)
// Use this one to specify the element count and stride manually.
#define SendPropArray2(arrayLengthSendProxy, varTemplate, elementCount, \
elementStride, arrayName) \
varTemplate, InternalSendPropArray(elementCount, elementStride, \
#arrayName, arrayLengthSendProxy)
// Use these to create properties that exclude other properties. This is useful
// if you want to use most of a base class's datatable data, but you want to
// override some of its variables.
SendProp SendPropExclude(
const char *pDataTableName, // Data table name (given to BEGIN_SEND_TABLE
// and BEGIN_RECV_TABLE).
const char *pPropName // Name of the property to exclude.
);
#endif // DATATABLE_SEND_H