The “Serverless” Casino: Build a Facebook Blackjack Bot in 6 Minutes with Node.js + StdLib
You can find a token in your StdLib dashboard. When the db reaches a certain threshold of number documents that triggers a mass removal of old documents. There are two endpoints that run the bot: The URL will be https: Install bower and gulp: From a scaling standpoint, the common solution would be to use a load balancer accross however many node server instances are needed for the demand.
JS boilerplate My thought process is that it would be an easy starting point since it does initial configuration of Express, Mongo, Angular. It did help with the initial configuration but in hindsight I am not sure I would have done it this way.
There was some learning curve just to figure out the directory structure, build system, and initialization. It took some time and amount of messing around to figure out how to make the grunt build system in the boilerplate compatible with the heroku deploy system. It is way over-kill. I removed a lot of the boilerplate, but even still there are many extra things. Prerequisites Make sure you have installed all of the following prerequisites on your development machine: If you encounter any problems, you can also use this GitHub Gist to install Node.
Bower - You're going to use the Bower Package Manager to manage your front-end packages. Make sure you've installed Node. In the application folder run this in the command-line: The overall design is: Angular client front-end, that call REST api endpoints. There are three main front-end views: Routes that map the REST api to the correct logic methods and response. Two collections are stored: GameResult - Every hand result is stored in the collection.
Who won the hand, the scores, the game id the hand was part of. Game - This is the collection where each game table is persisted. Unfortuneately I overused the term "Game". In most cases "Game" refers to the current Table. A "Game" table consists a unique ID, a dealer, a player, a deck of cards.
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Next, get the code for the webhook by running: Now you can navigate to the new service with: You can find a token in your StdLib dashboard.
With your three environment variables ready to go, its time to deploy the webhook. While in the blackjack-bot directory run: If you change your code, just run the command again to redeploy. The URL will be https: This is useful because Facebook requires prompt responses to their events, and this gives the webhook more time to respond. This allows the bot to receive messages send to the page.
Go to your new Facebook page and send it a message. From there the game plays completely through the quick replies. Place a bet, play your hand and repeat! There are two endpoints that run the bot: Receives one or more events from Facebook, where each event is a message to your bot.
It looks up the state of the conversation with that user in a key value store. If the event contains a quick reply, it gets dispatched to handlePayload , or if it is just text it goes to handleText. If you want to change the bots functionality, you would change those functions. After the new state is made and the response from the bot generated, the state is saved and the response is sent to Facebook.
Hopefully this guide has shown you how easy it is to work with StdLib. Building a Messenger bot is just one of the many ways you can get started with StdLib. As always, we look forward to hearing from you and happy building!
Increasing the Thrill of the Game When to Hit and When to Stand in Blackjack The most common dilemma that a player has to go through is when to hit or stand. Most professional players have their own basic blackjack strategy to guide them when would be the best time to stand and when would be the best time to hit. Some players may closely follow their own strategy thereby taking the least risks. Others will act boldly and ask to be hit when they are showing a 16 for example.
Players who have mastered the art of card counting are very courageous. But this skill is harder to implement with the recent technological advances. A"hit" means that you would like to take another card from the deck. If you have a higher chance of reaching a hand closer to or equal to 21, you can make a hit.
In the casinos you rarely say"hit" or"hit me", the common signal is by tapping the cards or just the table with your finger. A"stand" means that you're sticking with your total of two cards. You do this when the card in hand has a high probability of winning or simply because there is a high probability of a bust if you will ask for another card.
In blackjack you play against the dealer not against the other players as is the case at Texas Hold em poker sites. The house edge over a player in blackjack starts at about 5.
By properly hitting and standing, you can improve your odds by over 3 percent. Dealer's Card is an Ace This is one of the worst scenarios on the table. What you should consider in blackjack is that a card with a value of 10, which are 10, Jack, Queen, and King, is more likely to appear than any other single card value. Also, the dealer with an Ace has more chances of drawing cards without getting busted.