load and update existing game specific properties file

Changes.txt

@@ -5,6 +5,8 @@
 
   * Fixes for collision corner cases (during HBlank)
 
+  * UI modernization (new widget look, dialog titles added, dialogs refactored)
+
 5.0.2 to 5.1: (February 4, 2018)
 
   * Added "Time Machine" mode, which automatically creates save states

src/emucore/OSystem.cxx

@@ -217,6 +217,56 @@ void OSystem::setConfigPaths()
   mySettings->setValue("propsfile", node.getShortPath());
 }
 
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+PropertiesSet& OSystem::propSet(const string& md5)
+{
+  FilesystemNode node = FilesystemNode();
+
+  return propSet(md5, node);
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+PropertiesSet& OSystem::propSet(const string& md5, const FilesystemNode& node)
+{
+  if(md5 == EmptyString)
+    return *myPropSet;
+  else if(md5 == myGamePropSetMD5)
+    return *myGamePropSet;
+  else if (!node.exists())
+    return *myPropSet;
+
+  // Get a valid set of game specific properties
+  Properties props;
+  string path = myBaseDir + node.getNameWithExt(".pro");
+
+  // Create a properties set based on ROM name
+  FilesystemNode propNode = FilesystemNode(path);
+  myGamePropertiesFile = propNode.getPath();
+
+  myGamePropSet = make_unique<PropertiesSet>(myGamePropertiesFile);
+
+  // Check if game specific property file exists and has matching md5
+  if(myGamePropSet->size() && myGamePropSet->getMD5(md5, props))
+  {
+    myGamePropSetMD5 = md5;
+    return *myGamePropSet;
+  }
+  else
+  {
+    myGamePropSetMD5 = "";
+    return *myPropSet;
+  }
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void OSystem::saveGamePropSet(const string& md5)
+{
+  if(myGamePropSet->size() && md5 == myGamePropSetMD5)
+  {
+    myGamePropSet->save(myGamePropertiesFile);
+  }
+}
+
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 void OSystem::setBaseDir(const string& basedir)
 {
@@ -447,8 +497,7 @@ void OSystem::logMessage(const string& message, uInt8 level)
 }
 
 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-unique_ptr<Console>
-OSystem::openConsole(const FilesystemNode& romfile, string& md5)
+unique_ptr<Console> OSystem::openConsole(const FilesystemNode& romfile, string& md5)
 {
   unique_ptr<Console> console;
 
@@ -460,8 +509,15 @@ OSystem::openConsole(const FilesystemNode& romfile, string& md5)
     // Get a valid set of properties, including any entered on the commandline
     // For initial creation of the Cart, we're only concerned with the BS type
     Properties props;
-    myPropSet->getMD5(md5, props);
 
+    // Load and use game specific props if existing
+    FilesystemNode node = FilesystemNode(romfile);
+
+    string path = myBaseDir + node.getNameWithExt(".pro");
+    PropertiesSet& propset = propSet(md5, romfile);
+    propset.getMD5(md5, props);
+
+    // Local helper method
     auto CMDLINE_PROPS_UPDATE = [&](const string& name, PropertyType prop)
     {
       const string& s = mySettings->getString(name);
@@ -481,12 +537,12 @@ OSystem::openConsole(const FilesystemNode& romfile, string& md5)
     // and that the md5 (and hence the cart) has changed
     if(props.get(Cartridge_MD5) != cartmd5)
     {
-      if(!myPropSet->getMD5(cartmd5, props))
+      if(!propset.getMD5(cartmd5, props))
       {
         // Cart md5 wasn't found, so we create a new props for it
         props.set(Cartridge_MD5, cartmd5);
         props.set(Cartridge_Name, props.get(Cartridge_Name)+cart->multiCartID());
-        myPropSet->insert(props, false);
+        propset.insert(props, false);
       }
     }
 

src/emucore/OSystem.hxx

@@ -115,7 +115,13 @@ class OSystem
 
       @return The properties set object
     */
-    PropertiesSet& propSet() const { return *myPropSet; }
+    PropertiesSet& propSet(const string& md5 = EmptyString);
+    PropertiesSet& propSet(const string& md5, const FilesystemNode& node);
+
+    /**
+      Save the game specific property file.
+    */
+    void saveGamePropSet(const string& md5);
 
     /**
       Get the console of the system.  The console won't always exist,
@@ -454,6 +460,12 @@ class OSystem
     // Pointer to the PropertiesSet object
     unique_ptr<PropertiesSet> myPropSet;
 
+    // Pointer to the game's PropertiesSet object
+    unique_ptr<PropertiesSet> myGamePropSet;
+
+    // MD5 of the currently loaded  game PropertiesSet object
+    string myGamePropSetMD5;
+
     // Pointer to the (currently defined) Console object
     unique_ptr<Console> myConsole;
 
@@ -516,6 +528,7 @@ class OSystem
     string myConfigFile;
     string myPaletteFile;
     string myPropertiesFile;
+    string myGamePropertiesFile;
 
     FilesystemNode myRomFile;
     string myRomMD5;

src/emucore/PropsSet.hxx

@@ -112,6 +112,11 @@ class PropertiesSet
     */
     void print() const;
 
+    /**
+      Return the size of the myExternalProps list
+    */
+    uInt32 size() { return myExternalProps.size(); }
+
   private:
     using PropsList = std::map<string, Properties>;
 

src/gui/GameInfoDialog.cxx

@@ -348,7 +348,7 @@ void GameInfoDialog::loadConfig()
     const string& md5 = instance().launcher().selectedRomMD5();
     if(md5 != "")
     {
-      instance().propSet().getMD5(md5, myGameProperties);
+      instance().propSet(md5).getMD5(md5, myGameProperties);
       myPropertiesLoaded = true;
       loadView();
     }
@@ -486,10 +486,13 @@ void GameInfoDialog::saveConfig()
                        myPPBlend->getValueLabel());
 
   // Determine whether to add or remove an entry from the properties set
+  const string& md5 = myGameProperties.get(Cartridge_MD5);
   if(myDefaultsSelected)
-    instance().propSet().removeMD5(myGameProperties.get(Cartridge_MD5));
+    instance().propSet(md5).removeMD5(myGameProperties.get(Cartridge_MD5));
   else
-    instance().propSet().insert(myGameProperties);
+    instance().propSet(md5).insert(myGameProperties);
+
+  instance().saveGamePropSet(myGameProperties.get(Cartridge_MD5));
 
   // In any event, inform the Console
   if(instance().hasConsole())
@@ -501,7 +504,7 @@ void GameInfoDialog::setDefaults()
 {
   // Load the default properties
   string md5 = myGameProperties.get(Cartridge_MD5);
-  instance().propSet().getMD5(md5, myGameProperties, true);
+  instance().propSet(md5).getMD5(md5, myGameProperties, true);
 
   // Reload the current dialog
   loadView();

src/gui/LauncherDialog.cxx

@@ -349,7 +349,7 @@ void LauncherDialog::loadRomInfo()
 
     // Get the properties for this entry
     Properties props;
-    instance().propSet().getMD5WithInsert(node, myGameList->md5(item), props);
+    instance().propSet(myGameList->md5(item), node).getMD5WithInsert(node, myGameList->md5(item), props);
 
     myRomInfoWidget->setProperties(props);
   }