From 20d30bb8d736b9fdb116b733741a2036dc02eb8f Mon Sep 17 00:00:00 2001
From: scrawl <scrawl@baseoftrash.de>
Date: Tue, 7 Mar 2017 00:11:01 +0100
Subject: [PATCH] Move mDataLoaded into LandData

---
 components/esm/loadland.cpp | 29 ++++++++++++++---------------
 components/esm/loadland.hpp |  9 +++++++--
 2 files changed, 21 insertions(+), 17 deletions(-)

diff --git a/components/esm/loadland.cpp b/components/esm/loadland.cpp
index 5e33e60823..858b457045 100644
--- a/components/esm/loadland.cpp
+++ b/components/esm/loadland.cpp
@@ -18,7 +18,6 @@ namespace ESM
         , mY(0)
         , mPlugin(0)
         , mDataTypes(0)
-        , mDataLoaded(false)
         , mLandData(NULL)
     {
     }
@@ -76,7 +75,6 @@ namespace ESM
 
         mContext = esm.getContext();
 
-        mDataLoaded = 0;
         mLandData = NULL;
 
         // Skip the land data here. Load it when the cell is loaded.
@@ -186,7 +184,7 @@ namespace ESM
         // Try to load only available data
         flags = flags & mDataTypes;
         // Return if all required data is loaded
-        if ((mDataLoaded & flags) == flags) {
+        if (mLandData && (mLandData->mDataLoaded & flags) == flags) {
             return;
         }
         // Create storage if nothing is loaded
@@ -236,19 +234,18 @@ namespace ESM
 
     void Land::unloadData() const
     {
-        if (mDataLoaded)
+        if (mLandData)
         {
             delete mLandData;
             mLandData = NULL;
-            mDataLoaded = 0;
         }
     }
 
     bool Land::condLoad(ESM::ESMReader& reader, int flags, int dataFlag, void *ptr, unsigned int size) const
     {
-        if ((mDataLoaded & dataFlag) == 0 && (flags & dataFlag) != 0) {
+        if ((mLandData->mDataLoaded & dataFlag) == 0 && (flags & dataFlag) != 0) {
             reader.getHExact(ptr, size);
-            mDataLoaded |= dataFlag;
+            mLandData->mDataLoaded |= dataFlag;
             return true;
         }
         reader.skipHSubSize(size);
@@ -258,13 +255,12 @@ namespace ESM
     bool Land::isDataLoaded(int flags) const
     {
         OpenThreads::ScopedLock<OpenThreads::Mutex> lock(mMutex);
-        return (mDataLoaded & flags) == (flags & mDataTypes);
+        return mLandData && (mLandData->mDataLoaded & flags) == (flags & mDataTypes);
     }
 
     Land::Land (const Land& land)
     : mFlags (land.mFlags), mX (land.mX), mY (land.mY), mPlugin (land.mPlugin),
       mContext (land.mContext), mDataTypes (land.mDataTypes),
-      mDataLoaded (land.mDataLoaded),
       mLandData (land.mLandData ? new LandData (*land.mLandData) : 0)
     {}
 
@@ -282,7 +278,6 @@ namespace ESM
         std::swap (mPlugin, land.mPlugin);
         std::swap (mContext, land.mContext);
         std::swap (mDataTypes, land.mDataTypes);
-        std::swap (mDataLoaded, land.mDataLoaded);
         std::swap (mLandData, land.mLandData);
     }
 
@@ -311,18 +306,22 @@ namespace ESM
             mLandData = new LandData;
 
         mDataTypes |= flags;
-        mDataLoaded |= flags;
+        mLandData->mDataLoaded |= flags;
     }
 
     void Land::remove (int flags)
     {
         mDataTypes &= ~flags;
-        mDataLoaded &= ~flags;
 
-        if (!mDataLoaded)
+        if (mLandData)
         {
-            delete mLandData;
-            mLandData = 0;
+            mLandData->mDataLoaded &= ~flags;
+
+            if (!mLandData->mDataLoaded)
+            {
+                delete mLandData;
+                mLandData = 0;
+            }
         }
     }
 }
diff --git a/components/esm/loadland.hpp b/components/esm/loadland.hpp
index bdaf6cce83..eaffb2e464 100644
--- a/components/esm/loadland.hpp
+++ b/components/esm/loadland.hpp
@@ -80,6 +80,11 @@ struct Land
 
     struct LandData
     {
+        LandData()
+            : mDataLoaded(0)
+        {
+        }
+
         // Initial reference height for the first vertex, only needed for filling mHeights
         float mHeightOffset;
         // Height in world space for each vertex
@@ -99,6 +104,8 @@ struct Land
         // ???
         short mUnk1;
         uint8_t mUnk2;
+
+        int mDataLoaded;
     };
 
     // low-LOD heightmap (used for rendering the global map)
@@ -157,8 +164,6 @@ struct Land
 
         mutable OpenThreads::Mutex mMutex;
 
-        mutable int mDataLoaded;
-
         mutable LandData *mLandData;
 };