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Fix class hierarchy. Remove VTBL hacks #3766

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@TheNormalnij TheNormalnij commented Oct 3, 2024

This PR:

  • Removes dirty VTBL hacks in CEntitySAInterface. All hacks are replaced with virtual methods.
  • Fixes class hierarchy in CEntitySAInterface and CCameraSAInterface with CPlaceableSAInterface.

Current state: testing.

Comment on lines 211 to 216
void CCameraSA::SetMatrix(CMatrix* matrix)
{
CMatrix_Padded* pCamMatrix = GetInterface()->Placeable.matrix;
CMatrix_Padded* pCamMatrix = GetInterface()->matrix;
if (pCamMatrix)
{
pCamMatrix->vFront = matrix->vFront;
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This code had no effect previously. matrix was always nullptr because Placeable was misplaced

Comment on lines 168 to 198
// Initialize doors depending on the vehicle type.
DWORD dwOffset = 0;

switch (static_cast<VehicleClass>(GetVehicleInterface()->m_vehicleClass))
{
case VehicleClass::AUTOMOBILE:
case VehicleClass::MONSTER_TRUCK:
case VehicleClass::QUAD:
case VehicleClass::HELI:
case VehicleClass::PLANE:
case VehicleClass::TRAILER:
{
dwOffset = 1464;
}
case VehicleClass::TRAIN:
{
dwOffset = 1496;
}
default:
break;
}

if (dwOffset != 0)
{
for (unsigned int i = 0; i < sizeof(m_doors) / sizeof(m_doors[0]); ++i)
{
DWORD dwInterface = (DWORD)GetInterface();
DWORD dwDoorAddress = dwInterface + 1464 + i * 24;
DWORD dwDoorAddress = dwInterface + dwOffset + i * 24;
m_doors[i].SetInterface((CDoorSAInterface*)dwDoorAddress);
}
}
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This code was bugged. The game uses wrong door array positions for CTrain.
It causes train desync issues

@FileEX
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FileEX commented Oct 3, 2024

On this topic, I think we should get rid of two duplicate classes like CMatrix_Padded and CMatrixSAInterface. Only CMatrixSAInterface should remain. In addition, the CMatrix_Padded class is incomplete

@TheNormalnij
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TheNormalnij commented Oct 3, 2024

On this topic, I think we should get rid of two duplicate classes like CMatrix_Padded and CMatrixSAInterface. Only CMatrixSAInterface should remain. In addition, the CMatrix_Padded class is incomplete

CMatrix_Padded and CMatrixSAInterface are different classes. CMatrix_Padded

@FileEX
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FileEX commented Oct 3, 2024

On this topic, I think we should get rid of two duplicate classes like CMatrix_Padded and CMatrixSAInterface. Only CMatrixSAInterface should remain. In addition, the CMatrix_Padded class is incomplete

CMatrix_Padded and CMatrixSAInterface are different classes. CMatrix_Padded

You are right, so CMatrix_Padded should inherit CMatrixSAInterface, because now CMatrix_Paddes is the wrong size

Client/game_sa/CBuildingsPoolSA.h Outdated Show resolved Hide resolved
Client/game_sa/CEntitySA.h Show resolved Hide resolved
Client/game_sa/CEntitySA.h Outdated Show resolved Hide resolved
Client/game_sa/CPlaceableSA.h Outdated Show resolved Hide resolved
Client/game_sa/CPlaceableSA.h Outdated Show resolved Hide resolved
Client/game_sa/CProjectileSA.h Outdated Show resolved Hide resolved
Client/game_sa/CVehicleSA.h Show resolved Hide resolved
Client/game_sa/CVehicleSA.h Show resolved Hide resolved
@TheNormalnij TheNormalnij marked this pull request as ready for review October 26, 2024 00:59
{
// Log info
OutputDebugString(SString("Entity 0x%08x (with model %d) at ARRAY_StreamSectors[%d,%d] is invalid\n", pEntity, pEntity->m_nModelIndex,
i / 2 % NUM_StreamSectorRows, i / 2 / NUM_StreamSectorCols));
// Assert in debug
#if MTA_DEBUG
assert(pEntity->vtbl->DeleteRwObject == 0x00534030);
assert(static_cast<std::size_t*>(pEntity->GetVTBL())[CEntity_DeleteRwObject_VTBL_OFFSET] != 0x00534030);
#endif
pSectorEntry = (DWORD*)pSectorEntry[1];
continue;
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I think this check should be removed but not in this PR

@Dutchman101 Dutchman101 requested review from tederis and botder October 26, 2024 02:09
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3 participants