Make ESM::Faction skills optional (Fixes #1508)

Also increased size of mSkills array to 7. Some factions with 7 skills can be found in the vanilla CS. The previously "mUnknown" int appears to be the 7th element of the skills array.

apps/esmtool/record.cpp

@@ -682,13 +682,11 @@ void Record<ESM::Faction>::print()
 {
     std::cout << "  Name: " << mData.mName << std::endl;
     std::cout << "  Hidden: " << mData.mData.mIsHidden << std::endl;
-    if (mData.mData.mUnknown != -1)
-        std::cout << "  Unknown: " << mData.mData.mUnknown << std::endl;
     std::cout << "  Attribute1: " << attributeLabel(mData.mData.mAttribute[0])
               << " (" << mData.mData.mAttribute[0] << ")" << std::endl;
     std::cout << "  Attribute2: " << attributeLabel(mData.mData.mAttribute[1])
               << " (" << mData.mData.mAttribute[1] << ")" << std::endl;
-    for (int i = 0; i != 6; i++)
+    for (int i = 0; i < 7; i++)
         if (mData.mData.mSkills[i] != -1)
             std::cout << "  Skill: " << skillLabel(mData.mData.mSkills[i])
                       << " (" << mData.mData.mSkills[i] << ")" << std::endl;

apps/opencs/model/tools/factioncheck.cpp

@@ -42,7 +42,7 @@ void CSMTools::FactionCheckStage::perform (int stage, Messages& messages)
     // test for non-unique skill
     std::map<int, int> skills; // ID, number of occurrences
 
-    for (int i=0; i<6; ++i)
+    for (int i=0; i<7; ++i)
         if (faction.mData.mSkills[i]!=-1)
             ++skills[faction.mData.mSkills[i]];
 

apps/opencs/model/world/data.cpp

@@ -102,7 +102,7 @@ CSMWorld::Data::Data (ToUTF8::FromType encoding)
     mFactions.addColumn (new AttributesColumn<ESM::Faction> (0));
     mFactions.addColumn (new AttributesColumn<ESM::Faction> (1));
     mFactions.addColumn (new HiddenColumn<ESM::Faction>);
-    for (int i=0; i<6; ++i)
+    for (int i=0; i<7; ++i)
         mFactions.addColumn (new SkillsColumn<ESM::Faction> (i));
 
     mRaces.addColumn (new StringIdColumn<ESM::Race>);

apps/openmw/mwgui/statswindow.cpp

@@ -504,11 +504,18 @@ namespace MWGui
 
                         text += "\n\n#DDC79E#{sFavoriteSkills}";
                         text += "\n#BF9959";
-                        for (int i=0; i<6; ++i)
+                        bool firstSkill = true;
+                        for (int i=0; i<7; ++i)
                         {
-                            text += "#{"+ESM::Skill::sSkillNameIds[faction->mData.mSkills[i]]+"}";
-                            if (i<5)
+                            if (faction->mData.mSkills[i] != -1)
+                            {
+                                if (!firstSkill)
                                     text += ", ";
+
+                                firstSkill = false;
+
+                                text += "#{"+ESM::Skill::sSkillNameIds[faction->mData.mSkills[i]]+"}";
+                            }
                         }
 
                         text += "\n";

apps/openmw/mwmechanics/npcstats.cpp

@@ -361,8 +361,14 @@ bool MWMechanics::NpcStats::hasSkillsForRank (const std::string& factionId, int
 
     std::vector<int> skills;
 
-    for (int i=0; i<6; ++i)
+    for (int i=0; i<7; ++i)
+    {
+        if (faction.mData.mSkills[i] != -1)
             skills.push_back (static_cast<int> (getSkill (faction.mData.mSkills[i]).getModified()));
+    }
+
+    if (skills.empty())
+        return true;
 
     std::sort (skills.begin(), skills.end());
 
@@ -373,6 +379,9 @@ bool MWMechanics::NpcStats::hasSkillsForRank (const std::string& factionId, int
     if (*iter<rankData.mSkill1)
         return false;
 
+    if (skills.size() < 2)
+        return true;
+
     return *++iter>=rankData.mSkill2;
 }
 

components/esm/loadfact.cpp

@@ -12,7 +12,7 @@ namespace ESM
 
     int& Faction::FADTstruct::getSkill (int index, bool ignored)
     {
-        if (index<0 || index>=6)
+        if (index<0 || index>=7)
             throw std::logic_error ("skill index out of range");
 
         return mSkills[index];
@@ -20,7 +20,7 @@ namespace ESM
 
     int Faction::FADTstruct::getSkill (int index, bool ignored) const
     {
-        if (index<0 || index>=6)
+        if (index<0 || index>=7)
             throw std::logic_error ("skill index out of range");
 
         return mSkills[index];
@@ -75,7 +75,6 @@ void Faction::save(ESMWriter &esm) const
     {
         mName.clear();
         mData.mAttribute[0] = mData.mAttribute[1] = 0;
-        mData.mUnknown = -1;
         mData.mIsHidden = 0;
 
         for (int i=0; i<10; ++i)
@@ -87,7 +86,7 @@ void Faction::save(ESMWriter &esm) const
             mRanks[i].clear();
         }
 
-        for (int i=0; i<6; ++i)
+        for (int i=0; i<7; ++i)
             mData.mSkills[i] = 0;
 
         mReactions.clear();

components/esm/loadfact.hpp

@@ -40,8 +40,9 @@ struct Faction
 
         RankData mRankData[10];
 
-        int mSkills[6]; // IDs of skills this faction require
-        int mUnknown; // Always -1?
+        int mSkills[7]; // IDs of skills this faction require
+                        // Each element will either contain an ESM::Skill index, or -1.
+
         int mIsHidden; // 1 - hidden from player
 
         int& getSkill (int index, bool ignored = false);