take care of other player

app.h

@@ -32,6 +32,8 @@ protected:
 
     typedef struct {
         Vector2D coordinate;
+        int relativeDistanceToMe;
+        int relativeDistanceToOtherPlayer;
         int pts;
     } Gem;
 
@@ -43,9 +45,11 @@ protected:
 
     QVector<Gem> gems_;
     Vector2D myVehicle_;
+    QVector<Vector2D> otherVehicles_;
     void addGem(int x, int y, int pts);
     void fillField(QString body);
     Vector2D computeRelativePts(Gem g);
+    void computeRelativeDistance(Gem* g);
     void computeMove();
 
 };