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Engine internals. No scripting access today. Listed for contributors and for understanding the game; using it needs a change to the game library.

Map

Function	Signature (Linux)	Symbol	Current	From Lua	Notes
CityPlots::SetPurchasedByCity	`void Map::CityPlots::SetPurchasedByCity(Map::CityPlots* this, PlotCoord kLocation, PlayerTypes ePlayer, int idCity)` (+1 overload)	`0x4b620`	`0x4c5f0`	no	writes
CityPlots::SetValidDomains	`void Map::CityPlots::SetValidDomains(Map::CityPlots* this, Map::Plot::Instance* pkPlot)`	`0x4b880`	`0x4c850`	no	writes
CityPlots::SetWorkingCity	`void Map::CityPlots::SetWorkingCity(Map::CityPlots* this, PlotCoord kLocation, PlayerTypes ePlayer, int idCity)` (+1 overload)	`0x4b930`	`0x4c900`	no	writes
Feature::Manager::AddNaturalWonderVolcano	`void Map::Feature::Manager::AddNaturalWonderVolcano(Map::Feature::Manager* this, const PlotIndexVector& aPlotIndices, FeatureTypes eFeature)`	`0x7205e0`	`0x720ca0`	no	edit_call, writes
Feature::Manager::AddPlotYield	`void Map::Feature::Manager::AddPlotYield(Map::Feature::Manager* this, int iPlotIndex, YieldTypes eYield, int iAmount)`	`0x720820`	`0x720ee0`	Dev CE (experimental): Map.AddPlotYield	edit_call, event, writes
Feature::Manager::SetVolcanoActive ★	`void Map::Feature::Manager::SetVolcanoActive(Map::Feature::Manager* this, bool bMustBeNamed)`	`0x726950`	`0x7271e0`	Dev CE (experimental): Map.SetVolcanoActive	analysed, edit_call, event, notification, writes; called by EFFECT_ACTIVATE_VOLCANOES
Feature::Manager::SetVolcanoInactive ★	`void Map::Feature::Manager::SetVolcanoInactive(Map::Feature::Manager* this, bool bMustBeNamed)`	`0x726cb0`	`0x727540`	Dev CE (experimental): Map.SetVolcanoInactive	analysed, edit_call, event, notification, writes; called by EFFECT_ACTIVATE_VOLCANOES
Improvement::Builder::SetDistrictType	`bool Map::Improvement::Builder::SetDistrictType(Map::Improvement::Builder* this, int iX, int iY, DistrictTypes eNewValue, PlayerTypes eBuilder)` (+1 overload)	`0x25dbf0`	`0x25cdd0`	no	edit_call, writes
Instance::ChangeNaturalWonderCount	`void Map::Instance::ChangeNaturalWonderCount(Map::Instance* this, int iChange)`	`0x513f0`	`0x52000`	Dev CE (experimental): Map.ChangeNaturalWonderCount	writes
Landmass::Instance::ChangeCentroid	`void Map::Landmass::Instance::ChangeCentroid(Map::Landmass::Instance* this, const PlotCoord& kDelta)`	`0x2a850`	`0x2ae90`	no	writes
Landmass::Instance::ChangePlotCount	`void Map::Landmass::Instance::ChangePlotCount(Map::Landmass::Instance* this, int iChange)`	`0x2a880`	`0x2aec0`	no	writes
MapAnalysis::RemoveGraphCell	`void Map::MapAnalysis::RemoveGraphCell(Map::MapAnalysis* this, int i)`	`0x5cb580`	`0x5cc210`	no	writes
Player::Visibility::Builder::SetRevealed	`void Map::Player::Visibility::Builder::SetRevealed(PlayerTypes ePlayer, int iPlot, bool bRevealed)`	`0x2617b0`	`0x260990`	no	edit_call, writes
Player::Visibility::Manager::SetRevealedImprovementType	`bool Map::Player::Visibility::Manager::SetRevealedImprovementType(Map::Player::Visibility::Manager* this, PlayerTypes ePlayer, int iPlotIndex, ImprovementTypes eNewValue)`	`0x35ba50`	`0x35de10`	Dev CE (experimental): Map.SetRevealedImprovementType	edit_call, writes
Player::Visibility::Manager::SetRevealedResourceType	`bool Map::Player::Visibility::Manager::SetRevealedResourceType(Map::Player::Visibility::Manager* this, PlayerTypes ePlayer, int iPlotIndex, ResourceTypes eNewValue)`	`0x35baf0`	`0x35deb0`	Dev CE (experimental): Map.SetRevealedResourceType	edit_call, writes
Player::Visibility::Manager::SetRevealedRouteType	`bool Map::Player::Visibility::Manager::SetRevealedRouteType(Map::Player::Visibility::Manager* this, PlayerTypes ePlayer, int iPlotIndex, RouteTypes eNewType)`	`0x35bb90`	`0x35df50`	Dev CE (experimental): Map.SetRevealedRouteType	edit_call, writes
Plot::Instance::SetAppeal	`void Map::Plot::Instance::SetAppeal(Map::Plot::Instance* this, int iAppeal)`	`0x60630`	`0x61270`	via CE: Plot.SetAppeal
Region::RegionSplitter::BuildContinentFromMark	`void Map::Region::RegionSplitter::BuildContinentFromMark(Map::Region::RegionSplitter* this, ContinentList& aOutContinentList, const Types::ArrayWrapper<ContinentTypes> aContinentIndices, const MarkGrid& kGrid, uint8 mMark)`	`0x5ceda0`	`0x5cfae0`	no	writes
Route::Manager::RemoveAllPortalsAtPlot	`void Map::Route::Manager::RemoveAllPortalsAtPlot(Map::Route::Manager* this, const PlotCoord& kLocation)`	`0x63b80`	`0x64820`	no	writes
Route::Portal::AreaInstance::AttachAreas	`void Map::Route::Portal::AreaInstance::AttachAreas(Map::Route::Portal::AreaInstance* this)`	`0x62830`	`0x634d0`	Dev CE (experimental): MapAreaPortal.AttachAreas	writes
StartPositioner::SetPlotStartPositionState	`void Map::StartPositioner::SetPlotStartPositionState(Map::StartPositioner* this, int iPlot, bool bIsStartPos)`	`0x5d7580`	`0x5d8020`	no	event, writes
Terrain::CoastalLowlandDataHandler::SetFlooded	`void Map::Terrain::CoastalLowlandDataHandler::SetFlooded(Map::Terrain::CoastalLowlandDataHandler* this, int iPlotIndex, bool bNewValue)`	`0x738f50`	`0x739890`	no	edit_call, event, writes
Terrain::CoastalLowlandDataHandler::SetProtected	`void Map::Terrain::CoastalLowlandDataHandler::SetProtected(Map::Terrain::CoastalLowlandDataHandler* this, int iPlotIndex, bool bNewValue)`	`0x739150`	`0x739a90`	no	edit_call, event, writes
Territory::Builder::AddPlotToTerritory	`void Map::Territory::Builder::AddPlotToTerritory(const Map::Territory::Builder* this, Map::Territory::Container* pContainer, Map::Territory::Instance* pTerritory, PlotCoord kPlotCoord)`	`0x2ee50`	`0x2f390`	no	writes
Territory::Instance::SetIsSea	`void Map::Territory::Instance::SetIsSea(Map::Territory::Instance* this, bool bIsSea)`	`0x2c7f0`	`0x2ce60`	Dev CE (experimental): Territory.SetIsSea	writes
UnitContainer::AddLayer	`Map::SparseComponentIDGrid* Map::UnitContainer::AddLayer(Map::UnitContainer* this, uint uiLayerID)`	`0x55470`	`0x560b0`	no	writes
UnitContainer::DestroyLayers	`void Map::UnitContainer::DestroyLayers(Map::UnitContainer* this)`	`0x559e0`	`0x56620`	no	writes

Notes (★)

Map::Feature::Manager::SetVolcanoActive

Randomly activates one dormant volcano, if fewer are active than intended. It does not take a target volcano.

Rolls with the label 'Choose Active Volcano Roll' over the difference between the wanted and current active count. [verified; evidence: static-analysis — decompilation read in Ghidra]
Scans the volcano list (tracked list at this+0x110) for the Nth eligible entry; the bool restricts eligibility (entry[1] != -1 when true). [verified; evidence: static-analysis — decompilation read in Ghidra]
Stores the current game turn (game+0xc0) in the volcano's state field (+0x14), then sends a Reporting event with plot coordinates and visibility (0/1/2 for the local observer) plus a localized notification. [verified; evidence: static-analysis — decompilation read in Ghidra]
The bool most likely limits selection to named / natural-wonder volcanoes. (Low: guessed from the condition.) [inferred; evidence: static-analysis — decompilation read in Ghidra]
A wrapper would mean 'a random volcano wakes up', not 'wake this volcano'. The useful target is the per-volcano state change beneath it. [inferred; evidence: static-analysis — decompilation read in Ghidra]
Behavior depends on the local observer for visibility and notification, which matters in multiplayer. [inferred; evidence: static-analysis — decompilation read in Ghidra]

Map::Feature::Manager::SetVolcanoInactive

Randomly deactivates one active volcano. Mirror of SetVolcanoActive.

Same structure with roll label 'Choose Inactive Volcano Roll'; sets the state field to 0xFFFFFFFF instead of the current turn. [verified; evidence: static-analysis — decompilation read in Ghidra]
none [inferred; evidence: static-analysis — decompilation read in Ghidra]
See SetVolcanoActive. [inferred; evidence: static-analysis — decompilation read in Ghidra]