Use proper cell size for ESM4 cells in CoordinateConverter

apps/openmw/mwmechanics/aicombat.cpp

@@ -371,7 +371,8 @@ namespace MWMechanics
                         && !actor.getClass().isPureWaterCreature(actor))
                     {
                         ESM::Pathgrid::PointList points;
-                        Misc::CoordinateConverter coords(*storage.mCell->getCell());
+                        const Misc::CoordinateConverter coords
+                            = Misc::makeCoordinateConverter(*storage.mCell->getCell());
 
                         osg::Vec3f localPos = actor.getRefData().getPosition().asVec3();
                         coords.toLocal(localPos);

apps/openmw/mwmechanics/aipackage.cpp

@@ -421,7 +421,7 @@ bool MWMechanics::AiPackage::isNearInactiveCell(osg::Vec3f position)
     if (playerCell->isExterior())
     {
         // get actor's distance from origin of center cell
-        Misc::CoordinateConverter(*playerCell).toLocal(position);
+        Misc::makeCoordinateConverter(*playerCell).toLocal(position);
 
         // currently assumes 3 x 3 grid for exterior cells, with player at center cell.
         // AI shuts down actors before they reach edges of 3 x 3 grid.

apps/openmw/mwmechanics/aiwander.cpp

@@ -730,7 +730,7 @@ namespace MWMechanics
         auto& prng = MWBase::Environment::get().getWorld()->getPrng();
         int index = Misc::Rng::rollDice(storage.mAllowedNodes.size(), prng);
         ESM::Pathgrid::Point worldDest = storage.mAllowedNodes[index];
-        auto converter = Misc::CoordinateConverter(*actor.getCell()->getCell());
+        const Misc::CoordinateConverter converter = Misc::makeCoordinateConverter(*actor.getCell()->getCell());
         ESM::Pathgrid::Point dest = converter.toLocalPoint(worldDest);
 
         bool isPathGridOccupied = MWBase::Environment::get().getMechanicsManager()->isAnyActorInRange(
@@ -835,7 +835,7 @@ namespace MWMechanics
         if (mDistance && storage.mCanWanderAlongPathGrid && !actor.getClass().isPureWaterCreature(actor))
         {
             // get NPC's position in local (i.e. cell) coordinates
-            auto converter = Misc::CoordinateConverter(*cellStore->getCell());
+            const Misc::CoordinateConverter converter = Misc::makeCoordinateConverter(*cellStore->getCell());
             const osg::Vec3f npcPos = converter.toLocalVec3(mInitialActorPosition);
 
             // Find closest pathgrid point

apps/openmw/mwmechanics/pathfinding.cpp

@@ -189,7 +189,7 @@ namespace MWMechanics
             return;
 
         // NOTE: getClosestPoint expects local coordinates
-        Misc::CoordinateConverter converter(*mCell->getCell());
+        const Misc::CoordinateConverter converter = Misc::makeCoordinateConverter(*mCell->getCell());
 
         // NOTE: It is possible that getClosestPoint returns a pathgrind point index
         //       that is unreachable in some situations. e.g. actor is standing

apps/openmw/mwrender/pathgrid.cpp

@@ -116,7 +116,7 @@ namespace MWRender
             return;
 
         osg::Vec3f cellPathGridPos(0, 0, 0);
-        Misc::CoordinateConverter(*store->getCell()).toWorld(cellPathGridPos);
+        Misc::makeCoordinateConverter(*store->getCell()).toWorld(cellPathGridPos);
 
         osg::ref_ptr<osg::PositionAttitudeTransform> cellPathGrid = new osg::PositionAttitudeTransform;
         cellPathGrid->setPosition(cellPathGridPos);

components/detournavigator/navigatorimpl.cpp

@@ -133,7 +133,7 @@ namespace DetourNavigator
 
     void NavigatorImpl::addPathgrid(const ESM::Cell& cell, const ESM::Pathgrid& pathgrid)
     {
-        Misc::CoordinateConverter converter(&cell);
+        const Misc::CoordinateConverter converter = Misc::makeCoordinateConverter(cell);
         for (const auto& edge : pathgrid.mEdges)
         {
             const auto src = Misc::Convert::makeOsgVec3f(converter.toWorldPoint(pathgrid.mPoints[edge.mV0]));

components/esm3/loadcell.hpp

@@ -5,11 +5,14 @@
 #include <string>
 #include <vector>
 
-#include "cellref.hpp"
 #include "components/esm/defs.hpp"
 #include "components/esm/esmcommon.hpp"
 #include "components/esm/refid.hpp"
 
+#include <components/misc/constants.hpp>
+
+#include "cellref.hpp"
+
 namespace MWWorld
 {
     class ESMStore;
@@ -70,6 +73,8 @@ namespace ESM
 
         constexpr static RecNameInts sRecordId = REC_CELL;
 
+        static constexpr int sSize = Constants::CellSizeInUnits;
+
         /// Return a string descriptor for this record type. Currently used for debugging / error logs only.
         static std::string_view getRecordType() { return "Cell"; }
 

components/esm4/loadcell.hpp

@@ -35,6 +35,7 @@
 #include <components/esm/refid.hpp>
 #include <components/esm/util.hpp>
 #include <components/esm4/reader.hpp>
+#include <components/misc/constants.hpp>
 
 #include "lighting.hpp"
 
@@ -62,6 +63,8 @@ namespace ESM4
     // The cells need to be organised under world spaces.
     struct Cell
     {
+        static constexpr int sSize = Constants::ESM4CellSizeInUnits;
+
         ESM::RefId mId; // from the header
         std::uint32_t mFlags = 0; // from the header, see enum type RecordFlag for details
 

components/misc/coordinateconverter.hpp

@@ -3,9 +3,9 @@
 
 #include <components/esm/esmbridge.hpp>
 #include <components/esm3/loadcell.hpp>
-#include <components/esm3/loadland.hpp>
 #include <components/esm3/loadpgrd.hpp>
 #include <components/esm4/loadcell.hpp>
+#include <components/misc/constants.hpp>
 
 namespace Misc
 {
@@ -13,21 +13,9 @@ namespace Misc
     class CoordinateConverter
     {
     public:
-        CoordinateConverter(bool exterior, int cellX, int cellY)
-            : mCellX(exterior ? cellX * ESM::Land::REAL_SIZE : 0)
-            , mCellY(exterior ? cellY * ESM::Land::REAL_SIZE : 0)
-        {
-        }
-
-        explicit CoordinateConverter(const ESM::CellVariant& cell)
-            : CoordinateConverter(cell.isEsm4() ? cell.getEsm4().isExterior() : cell.getEsm3().isExterior(),
-                cell.isEsm4() ? cell.getEsm4().getGridX() : cell.getEsm3().getGridX(),
-                cell.isEsm4() ? cell.getEsm4().getGridY() : cell.getEsm3().getGridY())
-        {
-        }
-
-        explicit CoordinateConverter(const ESM::Cell* cell)
-            : CoordinateConverter(cell->isExterior(), cell->getGridX(), cell->getGridY())
+        explicit CoordinateConverter(int cellX, int cellY)
+            : mCellX(cellX)
+            , mCellY(cellY)
         {
         }
 
@@ -81,6 +69,29 @@ namespace Misc
         int mCellX;
         int mCellY;
     };
+
+    template <class T>
+    CoordinateConverter makeCoordinateConverterImpl(const T& cell)
+    {
+        if (cell.isExterior())
+            return CoordinateConverter(cell.sSize * cell.getGridX(), cell.sSize * cell.getGridY());
+        return CoordinateConverter(0, 0);
+    }
+
+    inline CoordinateConverter makeCoordinateConverter(const ESM::Cell& cell)
+    {
+        return makeCoordinateConverterImpl(cell);
+    }
+
+    inline CoordinateConverter makeCoordinateConverter(const ESM4::Cell& cell)
+    {
+        return makeCoordinateConverterImpl(cell);
+    }
+
+    inline CoordinateConverter makeCoordinateConverter(const ESM::CellVariant& cell)
+    {
+        return visit([](const auto& v) { return makeCoordinateConverterImpl(v); }, cell);
+    }
 }
 
 #endif