Add playerCellOnly option to extractLocalMaps

apps/openmw/mwbase/world.hpp

@@ -619,7 +619,7 @@ namespace MWBase
         virtual void extractWorldMap() = 0;
         ///< Extract world map using path from options or default
 
-        virtual void extractLocalMaps() = 0;
+        virtual void extractLocalMaps(bool playerCellOnly = false) = 0;
         ///< Extract local maps using path from options or default
 
         virtual bool isMapExtractionActive() const = 0;

apps/openmw/mwlua/worldbindings.cpp

@@ -259,11 +259,12 @@ namespace MWLua
                 "extractWorldMapAction");
         };
 
-        api["extractLocalMaps"] = [context, lua = context.mLua]() {
+        api["extractLocalMaps"] = [context, lua = context.mLua](sol::optional<bool> playerCellOnly) {
             checkGameInitialized(lua);
+            bool onlyPlayerCell = playerCellOnly.value_or(false);
             context.mLuaManager->addAction(
-                [] {
-                    MWBase::Environment::get().getWorld()->extractLocalMaps();
+                [onlyPlayerCell] {
+                    MWBase::Environment::get().getWorld()->extractLocalMaps(onlyPlayerCell);
                 },
                 "extractLocalMapsAction");
         };

apps/openmw/mwworld/worldimp.cpp

@@ -3930,7 +3930,7 @@ namespace MWWorld
         mMapExtractor->extractWorldMap();
     }
 
-    void World::extractLocalMaps()
+    void World::extractLocalMaps(bool playerCellOnly)
     {
         if (!mMapExtractor)
         {
@@ -3942,9 +3942,39 @@ namespace MWWorld
         {
             mMapExtractor->setLocalMap(localMap);
         }
+        
         const auto& activeCells = mWorldScene->getActiveCells();
-        std::vector<const MWWorld::CellStore*> cells(activeCells.begin(), activeCells.end());
-        mMapExtractor->extractLocalMaps(cells);
+        std::vector<const MWWorld::CellStore*> cells;
+        
+        if (playerCellOnly)
+        {
+            MWWorld::Ptr player = getPlayerPtr();
+            if (!player.isEmpty() && player.isInCell())
+            {
+                MWWorld::CellStore* playerCell = player.getCell();
+                
+                // Only extract for exterior cells
+                // Interior cells are always single, so no filtering needed
+                if (playerCell && playerCell->isExterior())
+                {
+                    cells.push_back(playerCell);
+                }
+                else
+                {
+                    cells.assign(activeCells.begin(), activeCells.end());
+                }
+            }
+        }
+        else
+        {
+            // Extract all active cells
+            cells.assign(activeCells.begin(), activeCells.end());
+        }
+        
+        if (!cells.empty())
+        {
+            mMapExtractor->extractLocalMaps(cells);
+        }
     }
 
     bool World::isMapExtractionActive() const

apps/openmw/mwworld/worldimp.hpp

@@ -693,7 +693,7 @@ namespace MWWorld
         bool getOverwriteMaps() const override { return mOverwriteMaps; }
 
         void extractWorldMap() override;
-        void extractLocalMaps() override;
+        void extractLocalMaps(bool playerCellOnly = false) override;
         bool isMapExtractionActive() const override;
 
         void saveToLocalMapDir(std::string_view filename, std::string_view stringData) override;

files/data/scripts/map_extractor/global.lua

@@ -8,8 +8,9 @@ local visitedCells = {}
 
 local cellCount = #world.cells
 local i = cellCount
-local lastTimestamp = core.getRealTime() - 100
-local timeFromLast = 100
+local lastTimestamp = core.getRealTime() - 50
+local timeFromLast = 50
+local onlyPlayerCell = false
 
 
 local function getExCellId(gridX, gridY)
@@ -66,7 +67,7 @@ local function processAndTeleport(skipExtraction)
     local pl = world.players[1]
 
     if not skipExtraction then
-        world.extractLocalMaps()
+        world.extractLocalMaps(onlyPlayerCell)
     end
 
     local function func()
@@ -98,7 +99,7 @@ local function processAndTeleport(skipExtraction)
             if not cell or not customCellId or visitedCells[customCellId] then goto continue end
 
             visitedCells[customCellId] = true
-            if cell.isExterior then
+            if not onlyPlayerCell and cell.isExterior then
                 for j = cell.gridX - 1, cell.gridX + 1 do
                     for k = cell.gridY - 1, cell.gridY + 1 do
                         visitedCells[getExCellId(j, k)] = true

files/lua_api/openmw/world.lua

@@ -236,7 +236,12 @@
 -- or defaults to "./textures/advanced_world_map/local" if not specified.
 -- By default, existing maps are not overwritten. Use --overwrite-maps option to force overwriting.
 -- @function [parent=#world] extractLocalMaps
--- @usage world.extractLocalMaps()  -- Use path from option or default
+-- @param #boolean playerCellOnly (optional, false by default) If true, extracts only the player's current cell.
+--   For exterior cells, this extracts only the player's cell instead of all 9 loaded cells.
+--   For interior cells, this has no effect as only one cell is loaded anyway.
+-- @usage world.extractLocalMaps()  -- Extract all active cells (default)
+-- @usage world.extractLocalMaps(false)  -- Same as above, extract all active cells
+-- @usage world.extractLocalMaps(true)  -- Extract only player's current cell (exterior only)
 
 ---
 -- Enable extraction mode for map generation.