From 36e1b6cc4820491ecb246172830b96c578ca5f43 Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Sat, 7 Mar 2015 16:30:41 +0100
Subject: [PATCH] Support fatigue below zero for the Drain effect (Fixes #2430)

---
 apps/openmw/mwmechanics/actors.cpp | 4 +++-
 apps/openmw/mwmechanics/stat.hpp   | 8 ++++----
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/apps/openmw/mwmechanics/actors.cpp b/apps/openmw/mwmechanics/actors.cpp
index eef30f1125..ca4105bc69 100644
--- a/apps/openmw/mwmechanics/actors.cpp
+++ b/apps/openmw/mwmechanics/actors.cpp
@@ -547,7 +547,9 @@ namespace MWMechanics
         {
             DynamicStat<float> stat = creatureStats.getDynamic(i);
             stat.setModifier(effects.get(ESM::MagicEffect::FortifyHealth+i).getMagnitude() -
-                             effects.get(ESM::MagicEffect::DrainHealth+i).getMagnitude());
+                             effects.get(ESM::MagicEffect::DrainHealth+i).getMagnitude(),
+                             // Fatigue can be decreased below zero meaning the actor will be knocked out
+                             i == 2);
 
 
             float currentDiff = creatureStats.getMagicEffects().get(ESM::MagicEffect::RestoreHealth+i).getMagnitude()
diff --git a/apps/openmw/mwmechanics/stat.hpp b/apps/openmw/mwmechanics/stat.hpp
index 30c7d31309..ffbc19e151 100644
--- a/apps/openmw/mwmechanics/stat.hpp
+++ b/apps/openmw/mwmechanics/stat.hpp
@@ -170,10 +170,10 @@ namespace MWMechanics
             }
 
             /// Change modified relatively.
-            void modify (const T& diff)
+            void modify (const T& diff, bool allowCurrentDecreaseBelowZero=false)
             {
                 mStatic.modify (diff);
-                setCurrent (getCurrent()+diff);
+                setCurrent (getCurrent()+diff, allowCurrentDecreaseBelowZero);
             }
 
             void setCurrent (const T& value, bool allowDecreaseBelowZero = false)
@@ -198,11 +198,11 @@ namespace MWMechanics
                 }
             }
 
-            void setModifier (const T& modifier)
+            void setModifier (const T& modifier, bool allowCurrentDecreaseBelowZero=false)
             {
                 T diff =  modifier - mStatic.getModifier();
                 mStatic.setModifier (modifier);
-                setCurrent (getCurrent()+diff);
+                setCurrent (getCurrent()+diff, allowCurrentDecreaseBelowZero);
             }
 
             void writeState (ESM::StatState<T>& state) const