Updated rover game with everything it needs

scripts/rover_game.gd

@@ -21,7 +21,7 @@ var loot_table : SimpleLootTable = null
 func _ready():
 	loot_table = LootTable.new(geode_loot_count_per_chance)
 	timer.start(play_time)
-	spawn_rocks(10)
+	spawn_rocks(4)
 
 func spawn_rocks(count: int):
 	var locations: Array = get_tree().get_nodes_in_group("rock_spawn_location")