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Merged
merged 26 commits into from
Jul 31, 2025
Merged

Attach events & rotation fix #3353

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d358a4a
Events for server-side
Nico8340 Mar 30, 2024
91ad6d1
Events for client-side
Nico8340 Mar 30, 2024
c5d9a9c
Modify returns
Nico8340 Apr 3, 2024
463a385
Modify BitStream version
Nico8340 Apr 3, 2024
1daa79e
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Nico8340 Apr 3, 2024
1b85d92
Format & early returns
Nico8340 Apr 3, 2024
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Merge branch 'attach' of https://github.com/Nico8340/mtasa-blue into …
Nico8340 Apr 3, 2024
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Dutchman101 Apr 5, 2024
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Nico8340 Jun 1, 2024
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botder Jul 31, 2025
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2 changes: 2 additions & 0 deletions Client/mods/deathmatch/logic/CClientGame.cpp
View file
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Original file line number Diff line number Diff line change
Expand Up @@ -2630,6 +2630,8 @@ void CClientGame::AddBuiltInEvents()
m_Events.AddEvent("onClientElementModelChange", "oldModel, newModel", nullptr, false);
m_Events.AddEvent("onClientElementDimensionChange", "oldDimension, newDimension", nullptr, false);
m_Events.AddEvent("onClientElementInteriorChange", "oldInterior, newInterior", nullptr, false);
m_Events.AddEvent("onClientElementAttach", "attachSource, attachOffsetX, attachOffsetY, attachOffsetZ, attachOffsetRX, attachOffsetRY, attachOffsetRZ", nullptr, false);
m_Events.AddEvent("onClientElementDetach", "detachSource, detachWorldX, detachWorldY, detachWorldZ, detachWorldRX, detachWorldRY, detachWorldRZ", nullptr, false);

// Player events
m_Events.AddEvent("onClientPlayerJoin", "", NULL, false);
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59 changes: 44 additions & 15 deletions Client/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1371,35 +1371,64 @@ bool CStaticFunctionDefinitions::AttachElements(CClientEntity& Entity, CClientEn
RUN_CHILDREN(AttachElements(**iter, AttachedToEntity, vecPosition, vecRotation))

// Can these elements be attached?
if (Entity.IsAttachToable() && AttachedToEntity.IsAttachable() && !AttachedToEntity.IsAttachedToElement(&Entity) &&
Entity.GetDimension() == AttachedToEntity.GetDimension())
if (!Entity.IsAttachToable() || !AttachedToEntity.IsAttachable() || AttachedToEntity.IsAttachedToElement(&Entity) ||
Entity.GetDimension() != AttachedToEntity.GetDimension())
{
ConvertDegreesToRadians(vecRotation);
return false;
}

Entity.SetAttachedOffsets(vecPosition, vecRotation);
Entity.AttachTo(&AttachedToEntity);
CLuaArguments Arguments;
Arguments.PushElement(&AttachedToEntity);
Arguments.PushNumber(vecPosition.fX);
Arguments.PushNumber(vecPosition.fY);
Arguments.PushNumber(vecPosition.fZ);
Arguments.PushNumber(vecRotation.fX);
Arguments.PushNumber(vecRotation.fY);
Arguments.PushNumber(vecRotation.fZ);

if (!Entity.CallEvent("onClientElementAttach", Arguments, true))
return false;

return true;
}
ConvertDegreesToRadians(vecRotation);

return false;
Entity.SetAttachedOffsets(vecPosition, vecRotation);
Entity.AttachTo(&AttachedToEntity);

return true;
}

bool CStaticFunctionDefinitions::DetachElements(CClientEntity& Entity, CClientEntity* pAttachedToEntity)
{
RUN_CHILDREN(DetachElements(**iter, pAttachedToEntity))

CClientEntity* pActualAttachedToEntity = Entity.GetAttachedTo();
if (pActualAttachedToEntity)
if (!pActualAttachedToEntity || (pAttachedToEntity && pActualAttachedToEntity != pAttachedToEntity))
{
if (pAttachedToEntity == NULL || pActualAttachedToEntity == pAttachedToEntity)
{
Entity.AttachTo(NULL);
return true;
}
return false;
}

return false;
CVector vecPosition;
CVector vecRotation;

Entity.GetPosition(vecPosition);
Entity.GetRotationDegrees(vecRotation);

CLuaArguments Arguments;
Arguments.PushElement(pActualAttachedToEntity);
Arguments.PushNumber(vecPosition.fX);
Arguments.PushNumber(vecPosition.fY);
Arguments.PushNumber(vecPosition.fZ);
Arguments.PushNumber(vecRotation.fX);
Arguments.PushNumber(vecRotation.fY);
Arguments.PushNumber(vecRotation.fZ);

if (!Entity.CallEvent("onClientElementDetach", Arguments, true))
{
return false;
}

Entity.AttachTo(NULL);
return true;
}

bool CStaticFunctionDefinitions::SetElementAttachedOffsets(CClientEntity& Entity, CVector& vecPosition, CVector& vecRotation)
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92 changes: 75 additions & 17 deletions Client/mods/deathmatch/logic/rpc/CElementRPCs.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -313,32 +313,90 @@ void CElementRPCs::SetElementDimension(CClientEntity* pSource, NetBitStreamInter
void CElementRPCs::AttachElements(CClientEntity* pSource, NetBitStreamInterface& bitStream)
{
ElementID usAttachedToID;
CVector vecPosition, vecRotation;
if (bitStream.Read(usAttachedToID) && bitStream.Read(vecPosition.fX) && bitStream.Read(vecPosition.fY) && bitStream.Read(vecPosition.fZ) &&
bitStream.Read(vecRotation.fX) && bitStream.Read(vecRotation.fY) && bitStream.Read(vecRotation.fZ))

CVector vecPosition;
CVector vecRotation;

if (!(bitStream.Read(usAttachedToID) && bitStream.Read(vecPosition.fX) && bitStream.Read(vecPosition.fY) && bitStream.Read(vecPosition.fZ) &&
bitStream.Read(vecRotation.fX) && bitStream.Read(vecRotation.fY) && bitStream.Read(vecRotation.fZ)))
{
CClientEntity* pAttachedToEntity = CElementIDs::GetElement(usAttachedToID);
if (pAttachedToEntity)
{
pSource->SetAttachedOffsets(vecPosition, vecRotation);
pSource->AttachTo(pAttachedToEntity);
}
return;
}

CClientEntity* pAttachedToEntity = CElementIDs::GetElement(usAttachedToID);
if (!pAttachedToEntity)
{
return;
}

ConvertRadiansToDegrees(vecRotation);

CLuaArguments Arguments;
Arguments.PushElement(pAttachedToEntity);
Arguments.PushNumber(vecPosition.fX);
Arguments.PushNumber(vecPosition.fY);
Arguments.PushNumber(vecPosition.fZ);
Arguments.PushNumber(vecRotation.fX);
Arguments.PushNumber(vecRotation.fY);
Arguments.PushNumber(vecRotation.fZ);

if (!pSource->CallEvent("onClientElementAttach", Arguments, true))
{
return;
}

ConvertDegreesToRadians(vecRotation);

pSource->SetAttachedOffsets(vecPosition, vecRotation);
pSource->AttachTo(pAttachedToEntity);
}

void CElementRPCs::DetachElements(CClientEntity* pSource, NetBitStreamInterface& bitStream)
{
unsigned char ucTimeContext;
if (bitStream.Read(ucTimeContext))
if (!bitStream.Read(ucTimeContext))
{
pSource->SetSyncTimeContext(ucTimeContext);
pSource->AttachTo(NULL);
return;
}

CVector vecPosition;
if (bitStream.Read(vecPosition.fX) && bitStream.Read(vecPosition.fY) && bitStream.Read(vecPosition.fZ))
{
pSource->SetPosition(vecPosition);
}
ElementID usAttachedToID;
CClientEntity* pAttachedToEntity = CElementIDs::GetElement(usAttachedToID);

CVector vecPosition;
CVector vecRotation;

bitStream.Read(vecPosition.fX);
bitStream.Read(vecPosition.fY);
bitStream.Read(vecPosition.fZ);
bitStream.Read(vecRotation.fX);
bitStream.Read(vecRotation.fY);
bitStream.Read(vecRotation.fZ);

CLuaArguments Arguments;
Arguments.PushElement(pAttachedToEntity);
Arguments.PushNumber(vecPosition.fX);
Arguments.PushNumber(vecPosition.fY);
Arguments.PushNumber(vecPosition.fZ);
Arguments.PushNumber(vecRotation.fX);
Arguments.PushNumber(vecRotation.fY);
Arguments.PushNumber(vecRotation.fZ);

if (!pSource->CallEvent("onClientElementDetach", Arguments, true))
{
return;
}

pSource->SetSyncTimeContext(ucTimeContext);
pSource->AttachTo(NULL);

if (vecPosition.fX != 0.0f || vecPosition.fY != 0.0f || vecPosition.fZ != 0.0f)
{
pSource->SetPosition(vecPosition);
}

if (vecRotation.fX != 0.0f || vecRotation.fY != 0.0f || vecRotation.fZ != 0.0f)
{
pSource->SetRotationDegrees(vecRotation);
}
}

Expand Down
2 changes: 2 additions & 0 deletions Server/mods/deathmatch/logic/CGame.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1668,6 +1668,8 @@ void CGame::AddBuiltInEvents()
m_Events.AddEvent("onElementModelChange", "oldModel, newModel", NULL, false);
m_Events.AddEvent("onElementDimensionChange", "oldDimension, newDimension", nullptr, false);
m_Events.AddEvent("onElementInteriorChange", "oldInterior, newInterior", nullptr, false);
m_Events.AddEvent("onElementAttach", "attachSource, attachOffsetX, attachOffsetY, attachOffsetZ, attachOffsetRX, attachOffsetRY, attachOffsetRZ", nullptr, false);
m_Events.AddEvent("onElementDetach", "detachSource, detachWorldX, detachWorldY, detachWorldZ, detachWorldRX, detachWorldRY, detachWorldRZ", nullptr, false);

// Radar area events

Expand Down
100 changes: 67 additions & 33 deletions Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1598,56 +1598,90 @@ bool CStaticFunctionDefinitions::AttachElements(CElement* pElement, CElement* pA
assert(pElement);
assert(pAttachedToElement);

if (pElement->IsAttachToable() && pAttachedToElement->IsAttachable() && !pAttachedToElement->IsAttachedToElement(pElement) &&
pElement->GetDimension() == pAttachedToElement->GetDimension())
if (!pElement->IsAttachToable() || !pAttachedToElement->IsAttachable() || pAttachedToElement->IsAttachedToElement(pElement) ||
pElement->GetDimension() != pAttachedToElement->GetDimension())
{
pElement->SetAttachedOffsets(vecPosition, vecRotation);
ConvertDegreesToRadians(vecRotation);
pElement->AttachTo(pAttachedToElement);
return false;
}

CBitStream BitStream;
BitStream.pBitStream->Write(pAttachedToElement->GetID());
BitStream.pBitStream->Write(vecPosition.fX);
BitStream.pBitStream->Write(vecPosition.fY);
BitStream.pBitStream->Write(vecPosition.fZ);
BitStream.pBitStream->Write(vecRotation.fX);
BitStream.pBitStream->Write(vecRotation.fY);
BitStream.pBitStream->Write(vecRotation.fZ);
m_pPlayerManager->BroadcastOnlyJoined(CElementRPCPacket(pElement, ATTACH_ELEMENTS, *BitStream.pBitStream));
CLuaArguments Arguments;
Arguments.PushElement(pAttachedToElement);
Arguments.PushNumber(vecPosition.fX);
Arguments.PushNumber(vecPosition.fY);
Arguments.PushNumber(vecPosition.fZ);
Arguments.PushNumber(vecRotation.fX);
Arguments.PushNumber(vecRotation.fY);
Arguments.PushNumber(vecRotation.fZ);

return true;
if (!pElement->CallEvent("onElementAttach", Arguments))
{
return false;
}

return false;
ConvertDegreesToRadians(vecRotation);

pElement->SetAttachedOffsets(vecPosition, vecRotation);
pElement->AttachTo(pAttachedToElement);

CBitStream BitStream;
BitStream.pBitStream->Write(pAttachedToElement->GetID());
BitStream.pBitStream->Write(vecPosition.fX);
BitStream.pBitStream->Write(vecPosition.fY);
BitStream.pBitStream->Write(vecPosition.fZ);
BitStream.pBitStream->Write(vecRotation.fX);
BitStream.pBitStream->Write(vecRotation.fY);
BitStream.pBitStream->Write(vecRotation.fZ);
m_pPlayerManager->BroadcastOnlyJoined(CElementRPCPacket(pElement, ATTACH_ELEMENTS, *BitStream.pBitStream));

return true;
}

bool CStaticFunctionDefinitions::DetachElements(CElement* pElement, CElement* pAttachedToElement)
{
assert(pElement);

CElement* pActualAttachedToElement = pElement->GetAttachedToElement();
if (pActualAttachedToElement)
if (!pActualAttachedToElement || (pAttachedToElement && pActualAttachedToElement != pAttachedToElement))
{
if (pAttachedToElement == NULL || pActualAttachedToElement == pAttachedToElement)
{
// Detach it. Also generate a new time context to prevent sync screwup from
// old packes arriving.
CVector vecPosition = pElement->GetPosition();
pElement->AttachTo(NULL);
pElement->GenerateSyncTimeContext();
return false;
}

CBitStream BitStream;
BitStream.pBitStream->Write(pElement->GetSyncTimeContext());
BitStream.pBitStream->Write(vecPosition.fX);
BitStream.pBitStream->Write(vecPosition.fY);
BitStream.pBitStream->Write(vecPosition.fZ);
m_pPlayerManager->BroadcastOnlyJoined(CElementRPCPacket(pElement, DETACH_ELEMENTS, *BitStream.pBitStream));
CVector vecPosition = pElement->GetPosition();
CVector vecRotation;

return true;
}
pElement->GetRotation(vecRotation);
ConvertRadiansToDegrees(vecRotation);

CLuaArguments Arguments;
Arguments.PushElement(pActualAttachedToElement);
Arguments.PushNumber(vecPosition.fX);
Arguments.PushNumber(vecPosition.fY);
Arguments.PushNumber(vecPosition.fZ);
Arguments.PushNumber(vecRotation.fX);
Arguments.PushNumber(vecRotation.fY);
Arguments.PushNumber(vecRotation.fZ);

if (!pElement->CallEvent("onElementDetach", Arguments))
{
return false;
}

return false;
// Detach it. Also generate a new time context to prevent sync screwup from
// old packets arriving.
pElement->AttachTo(NULL);
pElement->GenerateSyncTimeContext();

CBitStream BitStream;
BitStream.pBitStream->Write(pElement->GetSyncTimeContext());
BitStream.pBitStream->Write(vecPosition.fX);
BitStream.pBitStream->Write(vecPosition.fY);
BitStream.pBitStream->Write(vecPosition.fZ);
BitStream.pBitStream->Write(vecRotation.fX);
BitStream.pBitStream->Write(vecRotation.fY);
BitStream.pBitStream->Write(vecRotation.fZ);
m_pPlayerManager->BroadcastOnlyJoined(CElementRPCPacket(pElement, DETACH_ELEMENTS, *BitStream.pBitStream));

return true;
}

bool CStaticFunctionDefinitions::SetElementAlpha(CElement* pElement, unsigned char ucAlpha)
Expand Down
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