[Add] Restore health/armour when taking off from a planet.

src/land.c

@@ -148,6 +148,10 @@ void takeoff(void) {
   vect_pset(&player->solid->vel, 0., 0.);
   player->solid->dir = RNG(0, 359) * M_PI/180.;
 
+  // Heal the player.
+  player->armour = player->armour_max;
+  player->shield = player->shield_max;
+
   space_init(NULL);
 
   planet = NULL;