Hardcode the correct first person sneaking anim speed (bug #4787)

CHANGELOG.md

@@ -35,6 +35,7 @@
     Bug #4768: Fallback numerical value recovery chokes on invalid arguments
     Bug #4775: Slowfall effect resets player jumping flag
     Bug #4778: Interiors of Illusion puzzle in Sotha Sil Expanded mod is broken
+    Bug #4787: Sneaking makes 1st person walking/bobbing animation super-slow
     Bug #4797: Player sneaking and running stances are not accounted for when in air
     Bug #4800: Standing collisions are not updated immediately when an object is teleported without a cell change
     Bug #4803: Stray special characters before begin statement break script compilation

apps/openmw/mwmechanics/character.cpp

@@ -549,8 +549,9 @@ void CharacterController::refreshMovementAnims(const WeaponInfo* weap, Character
         mCurrentMovement = movementAnimName;
         if(!mCurrentMovement.empty())
         {
-            bool isrunning = mPtr.getClass().getCreatureStats(mPtr).getStance(MWMechanics::CreatureStats::Stance_Run)
-                    && !MWBase::Environment::get().getWorld()->isFlying(mPtr);
+            bool isflying = MWBase::Environment::get().getWorld()->isFlying(mPtr);
+            bool isrunning = mPtr.getClass().getCreatureStats(mPtr).getStance(MWMechanics::CreatureStats::Stance_Run) && !isflying;
+            bool issneaking = mPtr.getClass().getCreatureStats(mPtr).getStance(MWMechanics::CreatureStats::Stance_Sneak) && !isflying;
 
             // For non-flying creatures, MW uses the Walk animation to calculate the animation velocity
             // even if we are running. This must be replicated, otherwise the observed speed would differ drastically.
@@ -584,7 +585,7 @@ void CharacterController::refreshMovementAnims(const WeaponInfo* weap, Character
                     // The first person anims don't have any velocity to calculate a speed multiplier from.
                     // We use the third person velocities instead.
                     // FIXME: should be pulled from the actual animation, but it is not presently loaded.
-                    mMovementAnimSpeed = (isrunning ? 222.857f : 154.064f);
+                    mMovementAnimSpeed = (issneaking ? 33.5452f : (isrunning ? 222.857f : 154.064f));
                     mMovementAnimationControlled = false;
                 }
             }