Core: Do not use STL container size method to check if container is empty

src/server/collision/BoundingIntervalHierarchy.h

@@ -86,7 +86,7 @@ class BIH
         template< class T, class BoundsFunc >
         void build(const std::vector<T> &primitives, BoundsFunc &getBounds, uint32 leafSize = 3, bool printStats=false)
         {
-            if(primitives.size() == 0)
+            if(primitives.empty())
                 return;
             buildData dat;
             dat.maxPrims = leafSize;

src/server/collision/Models/WorldModel.cpp

@@ -360,7 +360,7 @@ namespace VMAP
 
     bool GroupModel::IntersectRay(const G3D::Ray &ray, float &distance, bool stopAtFirstHit) const
     {
-        if (!triangles.size())
+        if (triangles.empty())
             return false;
         GModelRayCallback callback(triangles, vertices);
         meshTree.intersectRay(ray, callback, distance, stopAtFirstHit);
@@ -369,7 +369,7 @@ namespace VMAP
 
     bool GroupModel::IsInsideObject(const Vector3 &pos, const Vector3 &down, float &z_dist) const
     {
-        if (!triangles.size() || !iBound.contains(pos))
+        if (triangles.empty() || !iBound.contains(pos))
             return false;
         GModelRayCallback callback(triangles, vertices);
         Vector3 rPos = pos - 0.1f * down;
@@ -468,7 +468,7 @@ namespace VMAP
 
     bool WorldModel::IntersectPoint(const G3D::Vector3 &p, const G3D::Vector3 &down, float &dist, AreaInfo &info) const
     {
-        if (!groupModels.size())
+        if (groupModels.empty())
             return false;
         WModelAreaCallback callback(groupModels, down);
         groupTree.intersectPoint(p, callback);
@@ -486,7 +486,7 @@ namespace VMAP
 
     bool WorldModel::GetLocationInfo(const G3D::Vector3 &p, const G3D::Vector3 &down, float &dist, LocationInfo &info) const
     {
-        if (!groupModels.size())
+        if (groupModels.empty())
             return false;
         WModelAreaCallback callback(groupModels, down);
         groupTree.intersectPoint(p, callback);