moved global variable handling into a separate class

apps/openmw/CMakeLists.txt

@@ -62,12 +62,15 @@ set(GAMESOUND_HEADER
 source_group(apps\\openmw\\mwsound FILES ${GAMESOUND} ${GAMESOUND_HEADER}) 
 
 set(GAMEWORLD
-    mwworld/world.cpp)
+    mwworld/world.cpp
+    mwworld/globals.cpp
+    )
 set(GAMEWORLD_HEADER 
     mwworld/refdata.hpp
     mwworld/world.hpp
     mwworld/ptr.hpp
     mwworld/environment.hpp
+    mwworld/globals.hpp
     )
 source_group(apps\\openmw\\mwworld FILES ${GAMEWORLD} ${GAMEWORLD_HEADER}) 
 

apps/openmw/mwscript/interpretercontext.cpp

@@ -117,44 +117,34 @@ namespace MWScript
     
     int InterpreterContext::getGlobalShort (const std::string& name) const
     {
-        Interpreter::Type_Data value = mEnvironment.mWorld->getGlobalVariable (name);       
-        return static_cast<Interpreter::Type_Short> (
-            *reinterpret_cast<Interpreter::Type_Integer *> (&value));
+        return mEnvironment.mWorld->getGlobalVariable (name).mShort;       
     }
 
     int InterpreterContext::getGlobalLong (const std::string& name) const
     {
         // a global long is internally a float.
-        Interpreter::Type_Data value = mEnvironment.mWorld->getGlobalVariable (name);       
-        return static_cast<Interpreter::Type_Integer> (
-            *reinterpret_cast<Interpreter::Type_Float *> (&value));
+        return mEnvironment.mWorld->getGlobalVariable (name).mLong;       
     }
 
     float InterpreterContext::getGlobalFloat (const std::string& name) const
     {
-        Interpreter::Type_Data value = mEnvironment.mWorld->getGlobalVariable (name);       
-        return *reinterpret_cast<Interpreter::Type_Float *> (&value);
+        return mEnvironment.mWorld->getGlobalVariable (name).mFloat; 
     }
 
     void InterpreterContext::setGlobalShort (const std::string& name, int value)
     {
-         mEnvironment.mWorld->getGlobalVariable (name) =
-            *reinterpret_cast<Interpreter::Type_Data *> (&value);
+         mEnvironment.mWorld->getGlobalVariable (name).mShort = value;
     }
 
     void InterpreterContext::setGlobalLong (const std::string& name, int value)
     {
         // a global long is internally a float.
-        float value2 = float(value);
-
-         mEnvironment.mWorld->getGlobalVariable (name) =
-            *reinterpret_cast<Interpreter::Type_Data *> (&value2);    
+         mEnvironment.mWorld->getGlobalVariable (name).mLong = value;
     }
 
     void InterpreterContext::setGlobalFloat (const std::string& name, float value)
     {
-         mEnvironment.mWorld->getGlobalVariable (name) =
-            *reinterpret_cast<Interpreter::Type_Data *> (&value);    
+         mEnvironment.mWorld->getGlobalVariable (name).mFloat = value;
     }
      
     bool InterpreterContext::isScriptRunning (const std::string& name) const

apps/openmw/mwworld/globals.cpp

@@ -0,0 +1,149 @@
+
+#include "globals.hpp"
+
+#include <stdexcept>
+
+#include <components/esm_store/store.hpp>
+
+namespace MWWorld
+{
+    Globals::Collection::const_iterator Globals::find (const std::string& name) const
+    {
+        Collection::const_iterator iter = mVariables.find (name);
+            
+        if (iter==mVariables.end())
+            throw std::runtime_error ("unknown global variable: " + name);
+            
+        return iter;    
+    }
+
+    Globals::Collection::iterator Globals::find (const std::string& name)
+    {
+        Collection::iterator iter = mVariables.find (name);
+            
+        if (iter==mVariables.end())
+            throw std::runtime_error ("unknown global variable: " + name);
+            
+        return iter;    
+    }
+
+    Globals::Globals (const ESMS::ESMStore& store)
+    {
+        for (ESMS::RecListT<ESM::Global>::MapType::const_iterator iter
+            (store.globals.list.begin()); iter != store.globals.list.end(); ++iter)
+        {
+            char type = ' ';
+            Data value;
+        
+            switch (iter->second.type)
+            {
+                case ESM::VT_Short:
+                    
+                    type = 's';
+                    value.mShort = *reinterpret_cast<const Interpreter::Type_Integer *> (
+                        &iter->second.value);
+                    break;
+                    
+                case ESM::VT_Int:
+                
+                    type = 'l';
+                    value.mLong = *reinterpret_cast<const Interpreter::Type_Float *> (
+                        &iter->second.value);
+                    break;
+                    
+                case ESM::VT_Float:
+                
+                    type = 'f';
+                    value.mFloat = *reinterpret_cast<const Interpreter::Type_Float *> (
+                        &iter->second.value);
+                    break;
+                    
+                default:
+                
+                    throw std::runtime_error ("unsupported global variable type");
+            }            
+
+            mVariables.insert (std::make_pair (iter->first, std::make_pair (type, value)));
+        }
+        
+        if (mVariables.find ("dayspassed")==mVariables.end())
+        {
+            // vanilla Morrowind does not define dayspassed.
+            Data value;
+            value.mLong = 0;
+            
+            mVariables.insert (std::make_pair ("dayspassed", std::make_pair ('l', value)));
+        }
+    }
+
+    const Globals::Data& Globals::operator[] (const std::string& name) const
+    {
+        Collection::const_iterator iter = find (name);
+            
+        return iter->second.second;
+    }
+
+    Globals::Data& Globals::operator[] (const std::string& name)
+    {
+        Collection::iterator iter = find (name);
+            
+        return iter->second.second;
+    }
+    
+    void Globals::setInt (const std::string& name, int value)
+    {
+        Collection::iterator iter = find (name);
+        
+        switch (iter->second.first)
+        {
+            case 's': iter->second.second.mShort = value; break;
+            case 'l': iter->second.second.mLong = value; break;
+            case 'f': iter->second.second.mFloat = value; break;
+            
+            default: throw std::runtime_error ("unsupported global variable type");
+        }
+    }
+    
+    void Globals::setFloat (const std::string& name, float value)
+    {
+        Collection::iterator iter = find (name);
+
+        switch (iter->second.first)
+        {
+            case 's': iter->second.second.mShort = value; break;
+            case 'l': iter->second.second.mLong = value; break;
+            case 'f': iter->second.second.mFloat = value; break;
+
+            default: throw std::runtime_error ("unsupported global variable type");
+        }        
+    }
+    
+    int Globals::getInt (const std::string& name) const
+    {
+        Collection::const_iterator iter = find (name);
+
+        switch (iter->second.first)
+        {
+            case 's': return iter->second.second.mShort;
+            case 'l': return iter->second.second.mLong;
+            case 'f': return iter->second.second.mFloat;
+
+            default: throw std::runtime_error ("unsupported global variable type");
+        }                
+    }
+        
+    float Globals::getFloat (const std::string& name) const
+    {
+        Collection::const_iterator iter = find (name);
+    
+        switch (iter->second.first)
+        {
+            case 's': return iter->second.second.mShort;
+            case 'l': return iter->second.second.mLong;
+            case 'f': return iter->second.second.mFloat;
+
+            default: throw std::runtime_error ("unsupported global variable type");
+        }    
+    }
+}
+

apps/openmw/mwworld/globals.hpp

@@ -0,0 +1,59 @@
+#ifndef GAME_MWWORLD_GLOBALS_H
+#define GAME_MWWORLD_GLOBALS_H
+
+#include <string>
+#include <map>
+
+#include <components/interpreter/types.hpp>
+
+namespace ESMS
+{
+    struct ESMStore;
+}
+
+namespace MWWorld
+{
+    class Globals
+    {
+        public:
+        
+            union Data
+            {
+                Interpreter::Type_Float mFloat;
+                Interpreter::Type_Float mLong; // Why Morrowind, why? :(
+                Interpreter::Type_Integer mShort;
+            };
+        
+            typedef std::map<std::string, std::pair<char, Data> > Collection;
+        
+        private:
+        
+            Collection mVariables; // type, value
+        
+            Collection::const_iterator find (const std::string& name) const;
+
+            Collection::iterator find (const std::string& name);
+        
+        public:
+        
+            Globals (const ESMS::ESMStore& store);
+        
+            const Data& operator[] (const std::string& name) const;
+
+            Data& operator[] (const std::string& name);
+            
+            void setInt (const std::string& name, int value);
+            ///< Set value independently from real type.
+            
+            void setFloat (const std::string& name, float value);
+            ///< Set value independently from real type.
+            
+            int getInt (const std::string& name) const;
+            ///< Get value independently from real type.
+                
+            float getFloat (const std::string& name) const;
+            ///< Get value independently from real type.
+    };
+}
+
+#endif

apps/openmw/mwworld/world.cpp

@@ -143,7 +143,7 @@ namespace MWWorld
     
     World::World (OEngine::Render::OgreRenderer& renderer, const boost::filesystem::path& dataDir,
         const std::string& master, const std::string& startCell, bool newGame)
-    : mSkyManager (0), mScene (renderer), mPlayerPos (0), mCurrentCell (0)
+    : mSkyManager (0), mScene (renderer), mPlayerPos (0), mCurrentCell (0), mGlobalVariables (0)
     {   
         boost::filesystem::path masterPath (dataDir);
         masterPath /= master;
@@ -162,17 +162,12 @@ namespace MWWorld
         mPlayerPos = new MWRender::PlayerPos (mScene.getCamera(), mStore.npcs.find ("player"));
 
         // global variables
-        for (ESMS::RecListT<ESM::Global>::MapType::const_iterator iter
-            (mStore.globals.list.begin()); 
-            iter != mStore.globals.list.end(); ++iter)
-            mGlobalVariables.insert (std::make_pair (iter->first, iter->second.value));
+        mGlobalVariables = new Globals (mStore);
         
         if (newGame)
         {      
             // set new game mark
-            float newGameState = 1;
-            mGlobalVariables["chargenstate"] =
-                *reinterpret_cast<Interpreter::Type_Data *> (&newGameState);
+            mGlobalVariables->setInt ("chargenstate", 1);
         }
         
         // This connects the cell data with the rendering scene.
@@ -203,6 +198,7 @@ namespace MWWorld
                         
         delete mPlayerPos;
         delete mSkyManager;
+        delete mGlobalVariables;
     }
     
     MWRender::PlayerPos& World::getPlayerPos()
@@ -226,14 +222,9 @@ namespace MWWorld
         return false;
     }
     
-    Interpreter::Type_Data& World::getGlobalVariable (const std::string& name)
+    Globals::Data& World::getGlobalVariable (const std::string& name)
     {
-        std::map<std::string, Interpreter::Type_Data>::iterator iter = mGlobalVariables.find (name);
-        
-        if (iter==mGlobalVariables.end())
-            throw std::runtime_error ("unknown global variable: " + name);
-            
-        return iter->second;
+        return (*mGlobalVariables)[name];
     }
     
     Ptr World::getPtr (const std::string& name, bool activeOnly)

apps/openmw/mwworld/world.hpp

@@ -8,13 +8,12 @@
 
 #include <components/esm_store/cell_store.hpp>
 
-#include <components/interpreter/types.hpp>
-
 #include "../mwrender/playerpos.hpp"
 #include "../mwrender/mwscene.hpp"
 
 #include "refdata.hpp"
 #include "ptr.hpp"
+#include "globals.hpp"
 
 namespace Render
 {
@@ -51,7 +50,7 @@ namespace MWWorld
             ESMS::ESMStore mStore;
             std::map<std::string, Ptr::CellStore> mInteriors;
             ScriptList mLocalScripts;
-            std::map<std::string, Interpreter::Type_Data> mGlobalVariables;
+            MWWorld::Globals *mGlobalVariables;
     
             // not implemented
             World (const World&);
@@ -80,7 +79,7 @@ namespace MWWorld
             bool hasCellChanged() const;
             ///< Has the player moved to a different cell, since the last frame?
             
-            Interpreter::Type_Data& getGlobalVariable (const std::string& name);
+            Globals::Data& getGlobalVariable (const std::string& name);
             
             Ptr getPtr (const std::string& name, bool activeOnly);
             ///< Return a pointer to a liveCellRef with the given name.