Add a dummy GetStat function returning 0 (Fixes #1589)

apps/openmw/mwscript/docs/vmformat.txt

@@ -403,5 +403,7 @@ op 0x200024a: OnMurder, explicit
 op 0x200024b: ToggleMenus
 op 0x200024c: Face
 op 0x200024d: Face, explicit
+op 0x200024e: GetStat (dummy function)
+op 0x200024f: GetStat (dummy function), explicit
 
-opcodes 0x200024e-0x3ffffff unused
+opcodes 0x2000250-0x3ffffff unused

apps/openmw/mwscript/statsextensions.cpp

@@ -1165,6 +1165,17 @@ namespace MWScript
                 }
         };
 
+        template <class R>
+        class OpGetStat : public Interpreter::Opcode0
+        {
+        public:
+            virtual void execute (Interpreter::Runtime& runtime)
+            {
+                // dummy
+                runtime.push(0);
+            }
+        };
+
         void installOpcodes (Interpreter::Interpreter& interpreter)
         {
             for (int i=0; i<Compiler::Stats::numberOfAttributes; ++i)
@@ -1307,6 +1318,8 @@ namespace MWScript
             interpreter.installSegment5 (Compiler::Stats::opcodeUndoWerewolfExplicit, new OpSetWerewolf<ExplicitRef, false>);
             interpreter.installSegment5 (Compiler::Stats::opcodeSetWerewolfAcrobatics, new OpSetWerewolfAcrobatics<ImplicitRef>);
             interpreter.installSegment5 (Compiler::Stats::opcodeSetWerewolfAcrobaticsExplicit, new OpSetWerewolfAcrobatics<ExplicitRef>);
+            interpreter.installSegment5 (Compiler::Stats::opcodeGetStat, new OpGetStat<ImplicitRef>);
+            interpreter.installSegment5 (Compiler::Stats::opcodeGetStatExplicit, new OpGetStat<ExplicitRef>);
         }
     }
 }

components/compiler/extensions0.cpp

@@ -431,6 +431,8 @@ namespace Compiler
             extensions.registerInstruction("setlevel", "l", opcodeSetLevel, opcodeSetLevelExplicit);
             extensions.registerFunction("getlevel", 'l', "", opcodeGetLevel, opcodeGetLevelExplicit);
 
+            extensions.registerFunction("getstat", 'l', "c", opcodeGetStat, opcodeGetStatExplicit);
+
             extensions.registerFunction ("getdeadcount", 'l', "c", opcodeGetDeadCount);
 
             extensions.registerFunction ("getpcfacrep", 'l', "/c", opcodeGetPCFacRep, opcodeGetPCFacRepExplicit);

components/compiler/opcodes.hpp

@@ -410,6 +410,9 @@ namespace Compiler
         const int opcodeRemoveEffectsExplicit = 0x200022e;
         const int opcodeResurrect = 0x200022f;
         const int opcodeResurrectExplicit = 0x2000230;
+
+        const int opcodeGetStat = 0x200024e;
+        const int opcodeGetStatExplicit = 0x200024f;
     }
 
     namespace Transformation