fixes issue #1

scenes/game/game.gd

@@ -194,13 +194,14 @@ func _process(delta):
 	
 	
 func _on_EndTurnButton_pressed():
-	if turn.layer == "country":
-		for army in turn.object.armies:
-			army.entity.current_turn_movable = true
-		for boat in turn.object.boats:
-			boat.entity.current_turn_movable = true
-	turn.object.compute_balance()
-	$Grid.selected_thing = null
+	if turn_id != -1:
+		if turn.layer == "country":
+			for army in turn.object.armies:
+				army.entity.current_turn_movable = true
+			for boat in turn.object.boats:
+				boat.entity.current_turn_movable = true
+		turn.object.compute_balance()
+		$Grid.selected_thing = null
 	
 	turn_id += 1
 	if turn_id == len(turns): turn_id = 0