add Player::hover

src/common/Player.cc

@@ -6,4 +6,5 @@ Player::Player()
     x = 0.0;
     y = 0.0;
     direction = 0.0;
+    hover = 1.0;
 }

src/common/Player.h

@@ -11,6 +11,7 @@ class Player
         double x;
         double y;
         double direction; /* 0 = East, M_PI_2 = North, M_PI = West, ... */
+        double hover;
 
         Player();
 };