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Implement stream for official plug-in compatibility layer.

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This commit is contained in:
Sandu Liviu Catalin 2021-03-20 16:56:44 +02:00
parent 1297635b89
commit 49eaedbb4b
3 changed files with 168 additions and 0 deletions
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1
module/Core.cpp
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@ -65,6 +65,7 @@ extern Buffer GetRealFilePath(const SQChar * path);
extern LightObj LgPickupObj(HSQUIRRELVM vm, int32_t id); extern LightObj LgPickupObj(HSQUIRRELVM vm, int32_t id);
extern LightObj LgPlayerObj(HSQUIRRELVM vm, int32_t id); extern LightObj LgPlayerObj(HSQUIRRELVM vm, int32_t id);
extern LightObj LgVehicleObj(HSQUIRRELVM vm, int32_t id); extern LightObj LgVehicleObj(HSQUIRRELVM vm, int32_t id);
extern void LgStreamLoadInput(const void * data, size_t size);
#endif #endif
/* ------------------------------------------------------------------------------------------------ /* ------------------------------------------------------------------------------------------------

1
module/Core/Events.inc
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@ -2252,6 +2252,7 @@ void Core::EmitClientScriptData(int32_t player_id, const uint8_t * data, size_t
#ifdef VCMP_ENABLE_OFFICIAL #ifdef VCMP_ENABLE_OFFICIAL
if (IsOfficial()) if (IsOfficial())
{ {
LgStreamLoadInput(data, size);
ExecuteLegacyEvent(m_VM, _SC("onClientScriptData"), _player.mLgObj); ExecuteLegacyEvent(m_VM, _SC("onClientScriptData"), _player.mLgObj);
} }
#endif #endif

166
module/Misc/Official.cpp
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@ -278,6 +278,7 @@ void LgEntityRGB::Set()
void Register_Official_Entity(HSQUIRRELVM vm); void Register_Official_Entity(HSQUIRRELVM vm);
void Register_Official_Functions(HSQUIRRELVM vm); void Register_Official_Functions(HSQUIRRELVM vm);
void Register_Official_Constants(HSQUIRRELVM vm); void Register_Official_Constants(HSQUIRRELVM vm);
void Register_Official_Stream(HSQUIRRELVM vm);
// ================================================================================================ // ================================================================================================
void Register_Official(HSQUIRRELVM vm) void Register_Official(HSQUIRRELVM vm)
@ -383,6 +384,7 @@ void Register_Official(HSQUIRRELVM vm)
Register_Official_Entity(vm); Register_Official_Entity(vm);
Register_Official_Functions(vm); Register_Official_Functions(vm);
Register_Official_Constants(vm); Register_Official_Constants(vm);
Register_Official_Stream(vm);
} }
/* ------------------------------------------------------------------------------------------------ /* ------------------------------------------------------------------------------------------------
@ -2213,4 +2215,168 @@ void Register_Official_Constants(HSQUIRRELVM vm)
} }
} }
// ------------------------------------------------------------------------------------------------
struct LgStream {
static constexpr size_t MAX_SIZE = 4096;
// --------------------------------------------------------------------------------------------
static void ClearOutput() {
m_InputStreamSize = m_InputStreamPosition = 0;
m_InputStreamError = false;
}
static void ClearInput() {
m_OutputStreamPosition = m_OutputStreamEnd = 0;
m_OutputStreamError = false;
}
// --------------------------------------------------------------------------------------------
static void StartWrite() { ClearOutput(); }
static void SetWritePosition(int position) {
if (position < 0 || position > m_OutputStreamEnd) m_OutputStreamPosition = m_OutputStreamEnd;
else m_OutputStreamPosition = position;
}
static int GetWritePosition() { return static_cast< int >(m_OutputStreamPosition); }
static int GetWriteSize() { return static_cast< int >(m_OutputStreamEnd); }
static bool HasWriteError() { return m_OutputStreamError; }
static void WriteByte(int value) { WriteValue(static_cast< uint8_t >(value)); }
static void WriteInt(int value) { Write(&value, sizeof(value)); }
static void WriteFloat(float value) { Write(&value, sizeof(value)); }
static void WriteString(StackStrF & value) {
uint16_t length = ConvTo< uint16_t >::From(value.mLen);
if (CanWrite(sizeof(length))) {
if (!CanWrite(length)) {
length = static_cast< uint16_t >(sizeof(m_OutputStreamData) - m_OutputStreamPosition);
m_OutputStreamError = true;
}
WriteValue(static_cast< uint16_t >(((length >> 8u) & 0xFFu) | ((length & 0xFFu) << 8u)));
Write(value.mPtr, length);
}
}
static void SendStream(LgPlayer * player) {
_Func->SendClientScriptData(player != nullptr ? player->GetIdentifier() : -1, m_OutputStreamData, m_OutputStreamEnd);
ClearOutput();
}
// --------------------------------------------------------------------------------------------
static void LoadInput(const void * data, size_t size) {
ClearInput();
m_InputStreamSize = size > sizeof(m_InputStreamData) ? sizeof(m_InputStreamData) : size;
memcpy(m_InputStreamData, data, m_InputStreamSize);
}
static void SetReadPosition(int position) {
if (position < 0 || position > m_InputStreamPosition) m_InputStreamPosition = m_InputStreamSize;
else m_InputStreamPosition = position;
}
static int GetReadPosition() { return static_cast< int >(m_InputStreamPosition); }
static int GetReadSize() { return static_cast< int >(m_InputStreamSize); }
static bool HasReadError() { return m_InputStreamError; }
static int ReadByte() {
if (m_InputStreamPosition + sizeof(uint8_t) <= m_InputStreamSize) {
return m_InputStreamData[m_InputStreamPosition++];
} else m_InputStreamError = true;
return 0;
}
static int ReadInt() {
if (m_InputStreamPosition + sizeof(int) <= m_InputStreamSize) {
int result;
memcpy(&result, &m_InputStreamData[m_InputStreamPosition], sizeof(result));
m_InputStreamPosition += sizeof(int);
return result;
} else m_InputStreamError = true;
return 0;
}
static float ReadFloat() {
if (m_InputStreamPosition + sizeof(float) <= m_InputStreamSize) {
float result;
memcpy(&result, &m_InputStreamData[m_InputStreamPosition], sizeof(result));
m_InputStreamPosition += sizeof(float);
return result;
} else m_InputStreamError = true;
return 0.0f;
}
static LightObj ReadString() {
uint16_t length = ReadBEInt16();
if (m_InputStreamPosition + length > m_InputStreamSize) {
length = (m_InputStreamSize - m_InputStreamPosition);
m_InputStreamError = true;
}
length = length > (MAX_SIZE-1) ? (MAX_SIZE-1) : length;
memcpy(m_Buffer, &m_InputStreamData[m_InputStreamPosition], length);
m_Buffer[length] = '\0';
m_InputStreamPosition += length;
return LightObj(m_Buffer, static_cast< SQInteger >(length));
}
private:
// --------------------------------------------------------------------------------------------
static bool CanWrite(size_t size) { return (size <= (sizeof(m_OutputStreamData) - m_OutputStreamPosition)); }
template < class T > static void WriteValue(const T & v) { Write(&v, sizeof(v)); }
static void Write(const void * value, size_t size) {
if (CanWrite(size)) {
memcpy(&m_OutputStreamData[m_OutputStreamPosition], value, size);
m_OutputStreamPosition += size;
if (m_OutputStreamPosition > m_OutputStreamEnd) m_OutputStreamEnd = m_OutputStreamPosition;
} else m_OutputStreamError = true;
}
// --------------------------------------------------------------------------------------------
static uint16_t ReadBEInt16() {
if (m_InputStreamPosition + sizeof(uint16_t) <= m_InputStreamSize) {
uint16_t result;
memcpy(&result, &m_InputStreamData[m_InputStreamPosition], sizeof(result));
m_InputStreamPosition += sizeof(uint16_t);
return ((result >> 8) & 0xFF) | ((result & 0xFF) << 8);
} m_InputStreamError = true;
return 0;
}
// --------------------------------------------------------------------------------------------
static uint8_t m_InputStreamData[MAX_SIZE];
static size_t m_InputStreamSize;
static size_t m_InputStreamPosition;
static bool m_InputStreamError;
// --------------------------------------------------------------------------------------------
static uint8_t m_OutputStreamData[MAX_SIZE];
static size_t m_OutputStreamPosition;
static size_t m_OutputStreamEnd;
static bool m_OutputStreamError;
// --------------------------------------------------------------------------------------------
static SQChar m_Buffer[MAX_SIZE];
};
// ------------------------------------------------------------------------------------------------
uint8_t LgStream::m_InputStreamData[LgStream::MAX_SIZE];
size_t LgStream::m_InputStreamSize;
size_t LgStream::m_InputStreamPosition;
bool LgStream::m_InputStreamError;
// ------------------------------------------------------------------------------------------------
uint8_t LgStream::m_OutputStreamData[LgStream::MAX_SIZE];
size_t LgStream::m_OutputStreamEnd;
size_t LgStream::m_OutputStreamPosition;
bool LgStream::m_OutputStreamError;
// ------------------------------------------------------------------------------------------------
SQChar LgStream::m_Buffer[LgStream::MAX_SIZE];
// ------------------------------------------------------------------------------------------------
void LgStreamLoadInput(const void * data, size_t size) { LgStream::LoadInput(data, size); }
// ================================================================================================
void Register_Official_Stream(HSQUIRRELVM vm)
{
Class< LgStream, NoConstructor< LgStream > > c(vm, "Stream");
c
.StaticFunc(_SC("StartWrite"), &LgStream::StartWrite)
.StaticFunc(_SC("SetWritePosition"), &LgStream::SetWritePosition)
.StaticFunc(_SC("GetWritePosition"), &LgStream::GetWritePosition)
.StaticFunc(_SC("GetWriteSize"), &LgStream::GetWriteSize)
.StaticFunc(_SC("HasWriteError"), &LgStream::HasWriteError)
.StaticFunc(_SC("WriteByte"), &LgStream::WriteByte)
.StaticFunc(_SC("WriteInt"), &LgStream::WriteInt)
.StaticFunc(_SC("WriteFloat"), &LgStream::WriteFloat)
.StaticFunc(_SC("WriteString"), &LgStream::WriteString)
.StaticFunc(_SC("SendStream"), &LgStream::SendStream)
.StaticFunc(_SC("SetReadPosition"), &LgStream::SetReadPosition)
.StaticFunc(_SC("GetReadPosition"), &LgStream::GetReadPosition)
.StaticFunc(_SC("GetReadSize"), &LgStream::GetReadSize)
.StaticFunc(_SC("HasReadError"), &LgStream::HasReadError)
.StaticFunc(_SC("ReadByte"), &LgStream::ReadByte)
.StaticFunc(_SC("ReadInt"), &LgStream::ReadInt)
.StaticFunc(_SC("ReadFloat"), &LgStream::ReadFloat)
.StaticFunc(_SC("ReadString"), &LgStream::ReadString)
;
}
} // Namespace:: SqMod } // Namespace:: SqMod