- Add support for multiple esm contexts in cell store. This will allow to generate references from multiple esX files. Currently, only the first context is used.

- Add many TODOs to mark points where more work is required to fully implement this feature.

apps/openmw/mwworld/cellstore.cpp

@@ -45,10 +45,16 @@ namespace MWWorld
     {
         assert (cell);
 
-        if (cell->mContext.filename.empty())
+        if (cell->mContextList.size() == 0)
             return; // this is a dynamically generated cell -> skipping.
 
+        // Load references from all plugins that do something with this cell.
+        // HACK: only use first entry for now, full support requires some more work
+        //for (int i = 0; i < cell->mContextList.size(); i++)
+        for (int i = 0; i < 1; i++)
+        {
             // Reopen the ESM reader and seek to the right position.
+            // TODO: we will need to intoduce separate "esm"s, one per plugin!
             cell->restore (esm);
 
             ESM::CellRef ref;
@@ -61,8 +67,11 @@ namespace MWWorld
                 std::transform (ref.mRefID.begin(), ref.mRefID.end(), std::back_inserter (lowerCase),
                     (int(*)(int)) std::tolower);
 
+                // TODO: support deletion / moving references out of the cell. no simple "push_back",
+                //  but see what the plugin wants to do.
                 mIds.push_back (lowerCase);
             }
+        }
 
         std::sort (mIds.begin(), mIds.end());
     }
@@ -71,10 +80,16 @@ namespace MWWorld
     {
       assert (cell);
 
-        if (cell->mContext.filename.empty())
+        if (cell->mContextList.size() == 0)
             return; // this is a dynamically generated cell -> skipping.
 
+        // Load references from all plugins that do something with this cell.
+        // HACK: only use first entry for now, full support requires some more work
+        //for (int i = 0; i < cell->mContextList.size(); i++)
+        for (int i = 0; i < 1; i++)
+        {
             // Reopen the ESM reader and seek to the right position.
+            // TODO: we will need to intoduce separate "esm"s, one per plugin!
             cell->restore(esm);
 
             ESM::CellRef ref;
@@ -126,3 +141,4 @@ namespace MWWorld
             }
         }
     }
+}

apps/openmw/mwworld/cellstore.hpp

@@ -62,6 +62,10 @@ namespace MWWorld
       if(obj == NULL)
         throw std::runtime_error("Error resolving cell reference " + ref.mRefID);
 
+      // TODO: this line must be modified for multiple plugins and moved references.
+      //  This means: no simple "push back", but search for an existing reference with
+      //  this ID first! If it exists, merge data into this list instead of just adding it.
+      // I'll probably generate a separate method jist for this.
       list.push_back(LiveRef(ref, obj));
     }
 

components/esm/loadcell.cpp

@@ -2,6 +2,7 @@
 
 #include <string>
 #include <sstream>
+#include <c++/4.6/list>
 
 #include "esmreader.hpp"
 #include "esmwriter.hpp"
@@ -111,7 +112,7 @@ void Cell::load(ESMReader &esm)
     }
 
     // Save position of the cell references and move on
-    mContext = esm.getContext();
+    mContextList.push_back(esm.getContext());
     esm.skipRecord();
 }
 
@@ -148,7 +149,8 @@ void Cell::save(ESMWriter &esm)
 
 void Cell::restore(ESMReader &esm) const
 {
-    esm.restoreContext(mContext);
+    // TODO: support all contexts in the list!
+    esm.restoreContext(mContextList[0]);
 }
 
 std::string Cell::getDescription() const
@@ -167,6 +169,12 @@ std::string Cell::getDescription() const
 
 bool Cell::getNextRef(ESMReader &esm, CellRef &ref)
 {
+    // TODO: Add support for moved references. References moved without crossing a cell boundary simply
+    //  overwrite old data. References moved across cell boundaries are using a different set of keywords,
+    //  and I'll have to think more about how this can be done.
+    // TODO: Add support for multiple plugins. This requires a tricky renaming scheme for "ref.mRefnum".
+    //  I'll probably add something to "ESMReader", we will need one per plugin anyway.
+    // TODO: Try and document reference numbering, I don't think this has been done anywhere else.
     if (!esm.hasMoreSubs())
         return false;
 

components/esm/loadcell.hpp

@@ -2,6 +2,7 @@
 #define OPENMW_ESM_CELL_H
 
 #include <string>
+#include <vector>
 
 #include "esmcommon.hpp"
 #include "defs.hpp"
@@ -120,7 +121,7 @@ struct Cell
   // Optional region name for exterior and quasi-exterior cells.
   std::string mRegion;
 
-  ESM_Context mContext; // File position
+  std::vector<ESM_Context> mContextList; // File position; multiple positions for multiple plugin support
   DATAstruct mData;
   AMBIstruct mAmbi;
   float mWater; // Water level

extern/shiny

@@ -1 +1 @@
-Subproject commit f17c4ebab0e7a1f3bbb25fd9b3dbef2bd742536a
+Subproject commit 4750676ac46a7aaa86bca53dc68c5a1ba11f3bc1