public void increaseResources() {
        // gold is increased every turn
        player.increaseGold(100);
        
        // soldier is increased every turn
        // increase soldiers code goes here
        
        // food is increased every season
        if (month == 3 || month == 6 || month == 9 || month == 12) {
            player.increaseFood(1000);
        }
    }