now is enable build and delete towers in game and improve graphic perfomance

find and correct many-many bugs

map.h

@@ -33,7 +33,7 @@ public:
 
 	explicit Map(QByteArray data, QSize size, QString name, int maxPlayers, int image, QObject *parent = 0);
 	bool addTowerOnMap(int playerId, QPoint pos);
-	bool isFreePlace(QPoint pos);
+	//bool isFreePlace(QPoint pos);
 	void delTowerOnMap(int playerId, QPoint pos);
 	void removeAliensPath();
 	QVector <QPointF> createPath(QPoint start, QPoint finish);
@@ -62,6 +62,7 @@ private:
 
 	QVector<QPoint> invWaveTrace(QPoint finish, int cnt);
 	int waveTrace(QPoint start, QPoint finish);
+	bool isReachable(int playerId, QPoint pos);
 	//void CreateMapExample();
 	//void ReadSettings();
 };