Implement Disable/EnableLevitation script functions

Totally copied on Disable/EnableTeleporting implementation.
Thanks KittyCat!

apps/openmw/mwbase/world.hpp

@@ -389,6 +389,12 @@ namespace MWBase
             /// Returns true if teleport spell effects are allowed.
             virtual bool isTeleportingEnabled() const = 0;
 
+            /// Enables or disables use of levitation spell effect.
+            virtual void enableLevitation(bool enable) = 0;
+
+            /// Returns true if levitation spell effect is allowed.
+            virtual bool isLevitationEnabled() const = 0;
+
             /// Turn actor into werewolf or normal form.
             virtual void setWerewolf(const MWWorld::Ptr& actor, bool werewolf) = 0;
 

apps/openmw/mwscript/docs/vmformat.txt

@@ -352,5 +352,7 @@ op 0x200021c: SetWerewolfAcrobaticsExplicit
 op 0x200021d: ShowVars
 op 0x200021e: ShowVarsExplicit
 op 0x200021f: ToggleGodMode
+op 0x2000220: DisableLevitation
+op 0x2000221: EnableLevitation
 
-opcodes 0x2000220-0x3ffffff unused
+opcodes 0x2000222-0x3ffffff unused

apps/openmw/mwscript/miscextensions.cpp

@@ -636,6 +636,17 @@ namespace MWScript
                 }
         };
 
+        template <bool Enable>
+        class OpEnableLevitation : public Interpreter::Opcode0
+        {
+            public:
+
+                virtual void execute (Interpreter::Runtime& runtime)
+                {
+                    MWBase::World *world = MWBase::Environment::get().getWorld();
+                    world->enableLevitation(Enable);
+                }
+        };
 
         template <class R>
         class OpShowVars : public Interpreter::Opcode0
@@ -789,6 +800,8 @@ namespace MWScript
             interpreter.installSegment5 (Compiler::Misc::opcodeShowVars, new OpShowVars<ImplicitRef>);
             interpreter.installSegment5 (Compiler::Misc::opcodeShowVarsExplicit, new OpShowVars<ExplicitRef>);
             interpreter.installSegment5 (Compiler::Misc::opcodeToggleGodMode, new OpToggleGodMode);
+            interpreter.installSegment5 (Compiler::Misc::opcodeDisableLevitation, new OpEnableLevitation<false>);
+            interpreter.installSegment5 (Compiler::Misc::opcodeEnableLevitation, new OpEnableLevitation<true>);
         }
     }
 }

apps/openmw/mwworld/worldimp.cpp

@@ -1877,6 +1877,16 @@ namespace MWWorld
         return mTeleportEnabled;
     }
 
+    void World::enableLevitation(bool enable)
+    {
+        mLevitationEnabled = enable;
+    }
+
+    bool World::isLevitationEnabled() const
+    {
+        return mLevitationEnabled;
+    }
+
     void World::setWerewolf(const MWWorld::Ptr& actor, bool werewolf)
     {
         MWMechanics::NpcStats& npcStats = Class::get(actor).getNpcStats(actor);

apps/openmw/mwworld/worldimp.hpp

@@ -116,6 +116,7 @@ namespace MWWorld
             int mPlayIntro;
 
             bool mTeleportEnabled;
+            bool mLevitationEnabled;
 
         public:
 
@@ -438,6 +439,12 @@ namespace MWWorld
             /// Returns true if teleport spell effects are allowed.
             virtual bool isTeleportingEnabled() const;
 
+            /// Enables or disables use of levitation spell effect.
+            virtual void enableLevitation(bool enable);
+
+            /// Returns true if levitation spell effect is allowed.
+            virtual bool isLevitationEnabled() const;
+
             virtual void setWerewolf(const MWWorld::Ptr& actor, bool werewolf);
 
             virtual void applyWerewolfAcrobatics(const MWWorld::Ptr& actor);

components/compiler/extensions0.cpp

@@ -260,6 +260,8 @@ namespace Compiler
             extensions.registerInstruction ("sv", "", opcodeShowVars, opcodeShowVarsExplicit);
             extensions.registerInstruction("tgm", "", opcodeToggleGodMode);
             extensions.registerInstruction("togglegodmode", "", opcodeToggleGodMode);
+            extensions.registerInstruction ("disablelevitation", "", opcodeDisableLevitation);
+            extensions.registerInstruction ("enablelevitation", "", opcodeEnableLevitation);
         }
     }
 

components/compiler/opcodes.hpp

@@ -222,6 +222,8 @@ namespace Compiler
         const int opcodeShowVars = 0x200021d;
         const int opcodeShowVarsExplicit = 0x200021e;
         const int opcodeToggleGodMode = 0x200021f;
+        const int opcodeDisableLevitation = 0x2000220;
+        const int opcodeEnableLevitation = 0x2000221;
     }
 
     namespace Sky