extractors can only be built on unoccupied deposits

extractor.cpp

@@ -23,6 +23,7 @@ namespace battleship{
 			for(ResourceDeposit *dep : deposits)
 				if(dep->getPos().getDistanceFrom(pos) < .001){
 					deposit = dep;
+					deposit->setExtractor(this);
 					break;
 				}
 		}
@@ -33,6 +34,9 @@ namespace battleship{
 	}
 
 	Extractor::~Extractor(){
+		if(deposit)
+			deposit->setExtractor(nullptr);
+
 		removeBar(ammountForeground);
 		removeBar(ammountBackground);
 	}

gameObjectFrameController.cpp

@@ -68,7 +68,7 @@ namespace battleship{
 			for(ResourceDeposit *dep : deposits){
 				Vector3 depPos = dep->getPos();
 
-				if(s.getPos().getDistanceFrom(depPos) < maxDist){
+				if(!dep->getExtractor() && s.getPos().getDistanceFrom(depPos) < maxDist){
 					s.status = GameObjectFrame::PLACEABLE;
 					s.placeAt(depPos);
 					break;

resourceDeposit.h

@@ -4,6 +4,8 @@
 #include "gameObject.h"
 
 namespace battleship{
+	class Extractor;
+
 	class ResourceDeposit : public GameObject{
 		public:
 			ResourceDeposit(Player*, int, vb01::Vector3, vb01::Quaternion, int);
@@ -11,8 +13,11 @@ namespace battleship{
 			inline int getAmmount(){return ammount;}
 			inline int getInitAmmount(){return initAmmount;}
 			inline void decreaseAmmount(int amnt){ammount -= amnt;}
+			inline Extractor* getExtractor(){return extractor;}
+			inline void setExtractor(Extractor *e){this->extractor = e;}
 		private:
 			int ammount, initAmmount;
+			Extractor *extractor = nullptr;
 
 			void reinit();
 	};