Fix spawn loading and saving, thanks to @BrunoDCC

src/client/creatures.cpp

@@ -109,8 +109,8 @@ void Spawn::save(TiXmlElement* node)
         const Position& placePos = pair.first;
         assert(placePos.isValid());
 
-        creatureNode->SetAttribute("x", placePos.x);
-        creatureNode->SetAttribute("y", placePos.y);
+        creatureNode->SetAttribute("x", c.x - placePos.x);
+        creatureNode->SetAttribute("y", c.y - placePos.y);
         creatureNode->SetAttribute("z", placePos.z);
 
         node->LinkEndChild(creatureNode);

src/client/creatures.h

@@ -53,7 +53,7 @@ public:
     int32 getRadius() { return m_attribs.get<int32>(SpawnAttrRadius); }
 
     void setCenterPos(const Position& pos) { m_attribs.set(SpawnAttrCenter, pos); }
-    Position getCenterPos() { return m_attribs.get<Position>(SpawnAttrPos); }
+    Position getCenterPos() { return m_attribs.get<Position>(SpawnAttrCenter); }
 
     void addCreature(const Position& placePos, const CreatureTypePtr& cType);
     void removeCreature(const Position& pos);