C++ cLuaState::GetNamedValue方法代码示例

bool cPrefabPiecePool::ReadConnectorsCubesetVer1(
	const AString & a_FileName,
	cLuaState & a_LuaState,
	const AString & a_PieceName,
	cPrefab * a_Prefab,
	bool a_LogWarnings
)
{
	// Get the Connectors subtable:
	auto conns = a_LuaState.WalkToValue("Connectors");
	if (!conns.IsValid())
	{
		CONDWARNING(a_LogWarnings, "Cannot load piece %s from file %s, it has no connectors definition.", a_PieceName.c_str(), a_FileName.c_str());
		return false;
	}

	// Iterate over all items in the Connectors table:
	int idx = 1;
	bool res = true;
	while (true)
	{
		lua_pushinteger(a_LuaState, idx);  // stk: [Connectors] [idx]
		lua_gettable(a_LuaState, -2);      // stk: [Connectors] [conn]
		if (!lua_istable(a_LuaState, -1))
		{
			// The connector is not present, we've iterated over all items
			lua_pop(a_LuaState, 1);  // stk: [Connectors]
			break;
		}
		int Type = 0, RelX = 0, RelY = 0, RelZ = 0;
		AString DirectionStr;
		cPiece::cConnector::eDirection Direction = cPiece::cConnector::dirYM;
		if (
			!a_LuaState.GetNamedValue("Type",      Type) ||
			!a_LuaState.GetNamedValue("RelX",      RelX) ||
			!a_LuaState.GetNamedValue("RelY",      RelY) ||
			!a_LuaState.GetNamedValue("RelZ",      RelZ) ||
			!a_LuaState.GetNamedValue("Direction", DirectionStr) ||
			!cPiece::cConnector::StringToDirection(DirectionStr, Direction)
		)
		{
			CONDWARNING(a_LogWarnings, "Piece %s in file %s has a malformed Connector at index %d ({%d, %d, %d}, type %d, direction %s). Skipping the connector.",
				a_PieceName.c_str(), a_FileName.c_str(), idx, RelX, RelY, RelZ, Type, DirectionStr.c_str()
			);
			res = false;
			lua_pop(a_LuaState, 1);  // stk: [Connectors]
			idx += 1;
			continue;
		}
		a_Prefab->AddConnector(RelX, RelY, RelZ, Direction, Type);
		lua_pop(a_LuaState, 1);  // stk: [Connectors]
		idx += 1;
	}
	return res;
}

bool cPrefabPiecePool::ApplyPieceMetadataCubesetVer1(
	const AString & a_FileName,
	cLuaState & a_LuaState,
	const AString & a_PieceName,
	cPrefab * a_Prefab,
	bool a_LogWarnings
)
{
	// Push the Metadata table on top of the Lua stack:
	auto md = a_LuaState.WalkToValue("Metadata");
	if (!md.IsValid())
	{
		return false;
	}

	// Get the values:
	int AddWeightIfSame = 0, DefaultWeight = 100, MoveToGround = 0, ShouldExpandFloor = 0;
	AString DepthWeight, MergeStrategy;
	a_LuaState.GetNamedValue("AddWeightIfSame",   AddWeightIfSame);
	a_LuaState.GetNamedValue("DefaultWeight",     DefaultWeight);
	a_LuaState.GetNamedValue("DepthWeight",       DepthWeight);
	a_LuaState.GetNamedValue("MergeStrategy",     MergeStrategy);
	a_LuaState.GetNamedValue("MoveToGround",      MoveToGround);
	a_LuaState.GetNamedValue("ShouldExpandFloor", ShouldExpandFloor);

	// Apply the values:
	a_Prefab->SetAddWeightIfSame(AddWeightIfSame);
	a_Prefab->SetDefaultWeight(DefaultWeight);
	a_Prefab->ParseDepthWeight(DepthWeight.c_str());
	auto msmap = GetMergeStrategyMap();
	auto strategy = msmap.find(MergeStrategy);
	if (strategy == msmap.end())
	{
		CONDWARNING(a_LogWarnings, "Unknown merge strategy (\"%s\") specified for piece %s in file %s. Using msSpongePrint instead.",
			MergeStrategy.c_str(), a_PieceName.c_str(), a_FileName.c_str()
		);
		a_Prefab->SetMergeStrategy(cBlockArea::msSpongePrint);
	}
	else
	{
		a_Prefab->SetMergeStrategy(strategy->second);
	}
	a_Prefab->SetMoveToGround(MoveToGround != 0);
	a_Prefab->SetExtendFloor(ShouldExpandFloor != 0);

	return true;
}

bool cPrefabPiecePool::ApplyPoolMetadataCubesetVer1(
	const AString & a_FileName,
	cLuaState & a_LuaState,
	bool a_LogWarnings
)
{
	// Push the Cubeset.Metadata table on top of the Lua stack:
	lua_getglobal(a_LuaState, "_G");
	auto md = a_LuaState.WalkToValue("Cubeset.Metadata");
	if (!md.IsValid())
	{
		CONDWARNING(a_LogWarnings, "Cannot load cubeset from file %s: Cubeset.Metadata table is missing", a_FileName.c_str());
		return false;
	}

	// Set the metadata values to defaults:
	m_MinDensity = 100;
	m_MaxDensity = 100;
	m_VillageRoadBlockType = E_BLOCK_GRAVEL;
	m_VillageRoadBlockMeta = 0;
	m_VillageWaterRoadBlockType = E_BLOCK_PLANKS;
	m_VillageWaterRoadBlockMeta = 0;

	// Read the metadata values:
	a_LuaState.GetNamedValue("IntendedUse",               m_IntendedUse);
	a_LuaState.GetNamedValue("MaxDensity",                m_MaxDensity);
	a_LuaState.GetNamedValue("MinDensity",                m_MinDensity);
	a_LuaState.GetNamedValue("VillageRoadBlockType",      m_VillageRoadBlockType);
	a_LuaState.GetNamedValue("VillageRoadBlockMeta",      m_VillageRoadBlockMeta);
	a_LuaState.GetNamedValue("VillageWaterRoadBlockType", m_VillageWaterRoadBlockType);
	a_LuaState.GetNamedValue("VillageWaterRoadBlockMeta", m_VillageWaterRoadBlockMeta);
	AString allowedBiomes;
	if (a_LuaState.GetNamedValue("AllowedBiomes", allowedBiomes))
	{
		auto biomes = StringSplitAndTrim(allowedBiomes, ",");
		for (const auto & biome: biomes)
		{
			EMCSBiome b = StringToBiome(biome);
			if (b == biInvalidBiome)
			{
				CONDWARNING(a_LogWarnings, "Invalid biome (\"%s\") specified in AllowedBiomes in cubeset file %s. Skipping the biome.",
					biome.c_str(), a_FileName.c_str()
				);
				continue;
			}
			m_AllowedBiomes.insert(b);
		}
	}
	else
	{
		// All biomes are allowed:
		for (int b = biFirstBiome; b <= biMaxBiome; b++)
		{
			m_AllowedBiomes.insert(static_cast<EMCSBiome>(b));
		}
		for (int b = biFirstVariantBiome; b <= biMaxVariantBiome; b++)
		{
			m_AllowedBiomes.insert(static_cast<EMCSBiome>(b));
		}
	}
	return true;
}

UniquePtr<cPrefab> cPrefabPiecePool::LoadPrefabFromCubesetVer1(
	const AString & a_FileName,
	cLuaState & a_LuaState,
	const AString & a_PieceName,
	bool a_LogWarnings
)
{
	// First try loading a referenced schematic file, if any:
	AString SchematicFileName;
	if (a_LuaState.GetNamedValue("SchematicFileName", SchematicFileName))
	{
		auto PathEnd = a_FileName.find_last_of("/\\");  // Find the last path separator
		if (PathEnd != AString::npos)
		{
			SchematicFileName = a_FileName.substr(0, PathEnd) + SchematicFileName;
		}
		cBlockArea area;
		if (!cSchematicFileSerializer::LoadFromSchematicFile(area, SchematicFileName))
		{
			CONDWARNING(a_LogWarnings, "Cannot load schematic file \"%s\" for piece %s in cubeset %s.",
				SchematicFileName.c_str(), a_PieceName.c_str(), a_FileName.c_str()
			);
			return nullptr;
		}
		return cpp14::make_unique<cPrefab>(area);
	}  // if (SchematicFileName)

	// There's no referenced schematic file, load from BlockDefinitions / BlockData.
	// Get references to the data and the table.concat function:
	cLuaState::cRef TableConcat, BlockDefinitions, BlockData;
	if (
		!a_LuaState.GetNamedGlobal("table.concat", TableConcat) ||
		!a_LuaState.GetNamedValue("BlockDefinitions", BlockDefinitions) ||
		!a_LuaState.GetNamedValue("BlockData", BlockData)
	)
	{
		CONDWARNING(a_LogWarnings, "Cannot parse block data for piece %s in cubeset %s", a_PieceName.c_str(), a_FileName.c_str());
		return nullptr;
	}

	// Call table.concat() on the BlockDefinitions:
	AString BlockDefStr;
	if (!a_LuaState.Call(TableConcat, BlockDefinitions, "\n", cLuaState::Return, BlockDefStr))
	{
		CONDWARNING(a_LogWarnings, "Cannot concat block definitions for piece %s in cubeset %s", a_PieceName.c_str(), a_FileName.c_str());
		return nullptr;
	}

	// Call table.concat() on the BlockData:
	AString BlockDataStr;
	if (!a_LuaState.Call(TableConcat, BlockData, "", cLuaState::Return, BlockDataStr))
	{
		CONDWARNING(a_LogWarnings, "Cannot concat block data for piece %s in cubeset %s", a_PieceName.c_str(), a_FileName.c_str());
		return nullptr;
	}

	// Read the size:
	int SizeX = 0, SizeY = 0, SizeZ = 0;
	if (
		!a_LuaState.GetNamedValue("Size.x", SizeX) ||
		!a_LuaState.GetNamedValue("Size.y", SizeY) ||
		!a_LuaState.GetNamedValue("Size.z", SizeZ)
	)
	{
		CONDWARNING(a_LogWarnings, "Cannot load piece %s from file %s, its size information is missing", a_PieceName.c_str(), a_FileName.c_str());
		return nullptr;
	}

	// Check that the size matches the data length:
	if (static_cast<size_t>(SizeX * SizeY * SizeZ) != BlockDataStr.size())
	{
		CONDWARNING(a_LogWarnings, "Cannot create piece %s from file %s, its size (%d) doesn't match the blockdata length (%u)",
			a_PieceName.c_str(), a_FileName.c_str(),
			SizeX * SizeY * SizeZ, static_cast<unsigned>(BlockDataStr.size())
		);
		return nullptr;
	}

	return cpp14::make_unique<cPrefab>(BlockDefStr, BlockDataStr, SizeX, SizeY, SizeZ);
}

bool cPrefabPiecePool::LoadCubesetPieceVer1(const AString & a_FileName, cLuaState & a_LuaState, int a_PieceIndex, bool a_LogWarnings)
{
	ASSERT(lua_istable(a_LuaState, -1));

	// The piece name is optional, but useful for debugging messages:
	AString PieceName;
	if (!a_LuaState.GetNamedValue("OriginData.ExportName", PieceName))
	{
		Printf(PieceName, "Piece #%d", a_PieceIndex);
	}

	// Read the hitbox dimensions:
	cCuboid Hitbox;
	if (
		!a_LuaState.GetNamedValue("Hitbox.MinX", Hitbox.p1.x) ||
		!a_LuaState.GetNamedValue("Hitbox.MinY", Hitbox.p1.y) ||
		!a_LuaState.GetNamedValue("Hitbox.MinZ", Hitbox.p1.z) ||
		!a_LuaState.GetNamedValue("Hitbox.MaxX", Hitbox.p2.x) ||
		!a_LuaState.GetNamedValue("Hitbox.MaxY", Hitbox.p2.y) ||
		!a_LuaState.GetNamedValue("Hitbox.MaxZ", Hitbox.p2.z)
	)
	{
		CONDWARNING(a_LogWarnings, "Cannot load piece %s from file %s, it's missing hitbox information", PieceName.c_str(), a_FileName.c_str());
		return false;
	}

	// Load the prefab data:
	auto prefab = LoadPrefabFromCubesetVer1(a_FileName, a_LuaState, PieceName, a_LogWarnings);
	if (prefab == nullptr)
	{
		return false;
	}
	prefab->SetHitBox(Hitbox);

	// Read the connectors
	if (!ReadConnectorsCubesetVer1(a_FileName, a_LuaState, PieceName, prefab.get(), a_LogWarnings))
	{
		return false;
	}

	// Read the allowed rotations. It is an optional metadata value, default to 0:
	int AllowedRotations = 0;
	a_LuaState.GetNamedValue("Metadata.AllowedRotations", AllowedRotations);
	prefab->SetAllowedRotations(AllowedRotations);

	// Apply the relevant metadata:
	if (!ApplyPieceMetadataCubesetVer1(a_FileName, a_LuaState, PieceName, prefab.get(), a_LogWarnings))
	{
		return false;
	}

	// Add the prefab into the list of pieces:
	int IsStartingPiece = 0;
	a_LuaState.GetNamedValue("Metadata.IsStarting", IsStartingPiece);
	if (IsStartingPiece != 0)
	{
		m_StartingPieces.push_back(prefab.release());
	}
	else
	{
		auto p = prefab.release();
		m_AllPieces.push_back(p);
		AddToPerConnectorMap(p);
	}
	return true;
}

bool cPrefabPiecePool::ReadPieceMetadataCubesetVer1(
	const AString & a_FileName,
	cLuaState & a_LuaState,
	const AString & a_PieceName,
	cPrefab * a_Prefab,
	bool a_LogWarnings
)
{
	// Push the Metadata table on top of the Lua stack:
	auto md = a_LuaState.WalkToValue("Metadata");
	if (!md.IsValid())
	{
		return false;
	}

	// Get the values:
	int AddWeightIfSame = 0, DefaultWeight = 100, MoveToGround = 0;
	AString DepthWeight, MergeStrategy, VerticalLimit, VerticalStrategy;
	a_LuaState.GetNamedValue("AddWeightIfSame",  AddWeightIfSame);
	a_LuaState.GetNamedValue("DefaultWeight",    DefaultWeight);
	a_LuaState.GetNamedValue("DepthWeight",      DepthWeight);
	a_LuaState.GetNamedValue("MergeStrategy",    MergeStrategy);
	a_LuaState.GetNamedValue("MoveToGround",     MoveToGround);
	a_LuaState.GetNamedValue("VerticalLimit",    VerticalLimit);
	a_LuaState.GetNamedValue("VerticalStrategy", VerticalStrategy);

	// Apply the values:
	a_Prefab->SetAddWeightIfSame(AddWeightIfSame);
	a_Prefab->SetDefaultWeight(DefaultWeight);
	a_Prefab->ParseDepthWeight(DepthWeight.c_str());
	auto msmap = GetMergeStrategyMap();
	auto strategy = msmap.find(MergeStrategy);
	if (strategy == msmap.end())
	{
		CONDWARNING(a_LogWarnings, "Unknown merge strategy (\"%s\") specified for piece %s in file %s. Using msSpongePrint instead.",
			MergeStrategy.c_str(), a_PieceName.c_str(), a_FileName.c_str()
		);
		a_Prefab->SetMergeStrategy(cBlockArea::msSpongePrint);
	}
	else
	{
		a_Prefab->SetMergeStrategy(strategy->second);
	}
	a_Prefab->SetMoveToGround(MoveToGround != 0);

	AString ExpandFloorStrategyStr;
	if (!a_LuaState.GetNamedValue("ExpandFloorStrategy", ExpandFloorStrategyStr))
	{
		// Check the older variant for ExpandFloorStrategy, ShouldExpandFloor:
		int ShouldExpandFloor;
		if (a_LuaState.GetNamedValue("ShouldExpandFloor", ShouldExpandFloor))
		{
			LOG("Piece \"%s\" in file \"%s\" is using the old \"ShouldExpandFloor\" attribute. Use the new \"ExpandFloorStrategy\" attribute instead for more options.",
				a_PieceName.c_str(), a_FileName.c_str()
			);
			a_Prefab->SetExtendFloorStrategy((ShouldExpandFloor != 0) ? cPrefab::efsRepeatBottomTillNonAir : cPrefab::efsNone);
		}
	}
	else
	{
		auto lcExpandFloorStrategyStr = StrToLower(ExpandFloorStrategyStr);
		if (lcExpandFloorStrategyStr == "repeatbottomtillnonair")
		{
			a_Prefab->SetExtendFloorStrategy(cPrefab::efsRepeatBottomTillNonAir);
		}
		else if (lcExpandFloorStrategyStr == "repeatbottomtillsolid")
		{
			a_Prefab->SetExtendFloorStrategy(cPrefab::efsRepeatBottomTillSolid);
		}
		else
		{
			if (lcExpandFloorStrategyStr != "none")
			{
				LOGWARNING("Piece \"%s\" in file \"%s\" is using an unknown \"ExpandFloorStrategy\" attribute value: \"%s\"",
					a_PieceName.c_str(), a_FileName.c_str(), ExpandFloorStrategyStr.c_str()
				);
			}
			a_Prefab->SetExtendFloorStrategy(cPrefab::efsNone);
		}
	}
	if (!VerticalLimit.empty())
	{
		if (!a_Prefab->SetVerticalLimitFromString(VerticalLimit, a_LogWarnings))
		{
			CONDWARNING(a_LogWarnings, "Unknown VerticalLimit (\"%s\") specified for piece %s in file %s. Using no limit instead.",
				VerticalLimit.c_str(), a_PieceName.c_str(), a_FileName.c_str()
			);
		}
	}
	a_Prefab->SetVerticalStrategyFromString(VerticalStrategy, a_LogWarnings);

	return true;
}