Implement terrain rendering in OpenCS (Fixes #1597)

components/esm/loadland.hpp

@@ -98,6 +98,8 @@ struct Land
     void load(ESMReader &esm);
     void save(ESMWriter &esm) const;
 
+    void blank() {}
+
     /**
      * Actually loads data
      */

components/esm/loadltex.cpp

@@ -19,4 +19,10 @@ void LandTexture::save(ESMWriter &esm) const
     esm.writeHNCString("DATA", mTexture);
 }
 
+void LandTexture::blank()
+{
+    mTexture.clear();
+    mIndex = -1;
+}
+
 }

components/esm/loadltex.hpp

@@ -32,6 +32,9 @@ struct LandTexture
     std::string mId, mTexture;
     int mIndex;
 
+    void blank();
+    ///< Set record to default state (does not touch the ID).
+
     void load(ESMReader &esm);
     void save(ESMWriter &esm) const;
 };